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Borah P, Mitra S, Reang D. Geochemical fractionation of iron in paper industry and municipal landfill soils: Ecological and health risks insights. ENVIRONMENTAL RESEARCH 2024; 250:118508. [PMID: 38395333 DOI: 10.1016/j.envres.2024.118508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024]
Abstract
Industrial processes and municipal wastes largely contribute to the fluctuations in iron (Fe) content in soils. Fe, when present in unfavorable amount, causes harmful effects on human, flora, and fauna. The present study is an attempt to evaluate the composition of Fe in surface soils from paper mill and municipal landfill sites and assess their potential ecological and human health risks. Geochemical fractionation was conducted to explore the chemical bonding of Fe across different fractions, i.e., water-soluble (F1) to residual (F6). Different contamination factors and pollution indices were evaluated to comprehend Fe contamination extent across the study area. Results indicated the preference for less mobile forms in the paper mill and landfill, with 26.66% and 43.46% of Fe associated with the Fe-Mn oxide bound fraction (F4), and 57.22% and 24.78% in the residual fraction (F6). Maximum mobility factor (MF) of 30.65% was observed in the paper mill, and 80.37% in the landfill. The enrichment factor (EF) varied within the range of 20 < EF < 40, signifying a high level of enrichment in the soil. The individual contamination factor (ICF) ranged from 0 to >6, highlighting low to high contamination. Adults were found to be more vulnerable towards Fe associated health risks compared to children. The Hazard Quotient (HQ) index showed the highest risk potential pathways as dermal contact > ingestion > inhalation. The study offers insights into potential Fe contamination risks in comparable environments, underscoring the crucial role of thorough soil assessments in shaping land use and waste management policies.
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Affiliation(s)
- Pallabi Borah
- Department of Environmental Science, Royal Global University, Guwahati, Assam, 781035, India; Department of Environmental Science, Tezpur University, Tezpur, Assam, 784028, India.
| | - Sudip Mitra
- Agro-ecotechnology Laboratory, School of Agro and Rural Technology, Indian Institute of Technology Guwahati (IITG), Assam, 781039, India.
| | - Demsai Reang
- Department of Environmental Science, Royal Global University, Guwahati, Assam, 781035, India.
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Hasnine T, Lumbaque EC, Yuan Q. Optimisation of electrochemical oxidation process with boron doped diamond (BDD) for removing COD, colour, ammonium, and phosphate in landfill leachate. ENVIRONMENTAL TECHNOLOGY 2024; 45:3141-3154. [PMID: 37139901 DOI: 10.1080/09593330.2023.2210769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 04/17/2023] [Indexed: 05/05/2023]
Abstract
This study investigated the electrooxidation (EO) of mature landfill leachate from the Brady Road Resource Management Facility, Winnipeg (Canada). EO using boron-doped diamond (BDD) electrodes were applied to treat real landfill leachate using a batch reactor. Response surface methodology (RSM) was used to determine the optimum process parameter levels. This research mainly focused on how different current densities (64, 95, and 125 mA/cm2) and operational time (30 min, 1, 1.5, 2, 2.5, and 3 hr.) influenced the optimisation of parameters such as chemical oxygen demand (COD), colour, ammonium, and phosphate removal in mature landfill leachate at varied pH. To attain a high percentage of removal for the parameters mentioned above, the optimal conditions were found to be a current density (J) of 125 mA/cm2 and a pH of 8. The optimum conditions resulted in removal percentages of 95.47%, 80.27%, 71.15%, and 47.15% for colour, NH4+, COD, and PO43- respectively, with an energy consumption of 0.05 kWh/dm3. The removal is related to a mechanism of the decomposition of water molecules to hydroxyl radicals and by direct anodic oxidation where the pollutants are transformed to CO2 and H2O. The novelty of this research lies in the optimisation of BDD electrode-based treatment for the simultaneous removal of COD, ammonium, phosphate, and colour from mature leachate collected from a severely cold climatic region of Canada. The BDD electrode showed excellent removal efficiencies for the targeted contaminants with lower energy consumption, making it a feasible method for on-site landfill leachate treatment.
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Affiliation(s)
- Tanvir Hasnine
- Department of Civil Engineering, University of Manitoba, Winnipeg, Canada
| | | | - Qiuyan Yuan
- Department of Civil Engineering, University of Manitoba, Winnipeg, Canada
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Zhao S, Zheng Q, Wang H, Fan X. Nitrogen in landfills: Sources, environmental impacts and novel treatment approaches. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171725. [PMID: 38492604 DOI: 10.1016/j.scitotenv.2024.171725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/05/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
Nitrogen (N) accumulation in landfills is a pressing environmental concern due to its diverse sources and significant environmental impacts. However, there is relatively limited attention and research focus on N in landfills as it is overshadowed by other more prominent pollutants. This study comprehensively examines the sources of N in landfills, including food waste contributing to 390 million tons of N annually, industrial discharges, and sewage treatment plant effluents. The environmental impacts of N in landfills are primarily manifested in N2O emissions and leachate with high N concentrations. To address these challenges, this study presents various mitigation and management strategies, including N2O reduction measures and novel NH4+ removal techniques, such as electrochemical technologies, membrane separation processes, algae-based process, and other advanced oxidation processes. However, a more in-depth understanding of the complexities of N cycling in landfills is required, due to the lack of long-term monitoring data and the presence of intricate interactions and feedback mechanisms. To ultimately achieve optimized N management and minimized adverse environmental impacts in landfill settings, future prospects should emphasize advancements in monitoring and modeling technologies, enhanced understanding of microbial ecology, implementation of circular economy principles, application of innovative treatment technologies, and comprehensive landfill design and planning.
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Affiliation(s)
- Shan Zhao
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; College of Civil Engineering, Tongji University, Shanghai 200092, China
| | - Qiteng Zheng
- College of Civil Engineering, Tongji University, Shanghai 200092, China
| | - Hao Wang
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Xinyao Fan
- College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
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Xu H, Chen Y, Yang D, Wang H, Tang Z, Dai X, Chen H. Improved microalgae growth and lipid production in anaerobic digestate with ultraviolet radiation pretreatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 922:171339. [PMID: 38428595 DOI: 10.1016/j.scitotenv.2024.171339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/03/2024]
Abstract
Inappropriate sterilization strategies inhibit microalgal growth when culturing microalgae with anaerobic digestate. This study aimed to scientifically select a low-cost disinfection pretreatment of anaerobic digestate for large-scale microalgae cultivations. In this work, three different methods, including autoclaving, ultraviolet or NaClO treatments, were employed to sterilize the municipal anaerobic digestate. Scenedesmus quadricauda was then cultured in diluted liquid digestate for the simultaneous lipid production and nutrient removal. The results indicated that the growth of S. quadricauda was inhibited after NaClO treatment due to the residual free chlorine. The 15-min ultraviolet effectively mitigated microbial contamination and increasing nutrient availability, enhancing the electron transport of microalgal photosynthesis. After 6-days cultivation, the microalgal biomass concentration of the ultraviolet group was 1.09 g/L, comparable to that of the autoclaving group (1.15 g/L). High nutrient removal efficiency was observed: COD (93.30 %), NH4+-N (92.56 %), TN (85.82 %) and TP (95.12 %). Moreover, S. quadricauda outcompeted the indigenous microorganisms, contributing to its dominance in the culture system of ultraviolet group. The facultative anaerobe Comamonadaceae and aerobes Moraxellaceae, rather than strict anaerobe Paludibacteraceae and Bacteroidetes_vadinHA17, played vital roles in synergistic removal of contaminants by bacteria and algae. The potential competition for nitrogen and phosphorus by bacteria contributed to the ultraviolet group having the greatest lipid content (48.19 %). Therefore, this work suggested using 15-min ultraviolet treatment for anaerobic digestate in large-scale microalgae cultivation.
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Affiliation(s)
- Haolian Xu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yongdong Chen
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Donghai Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Hong Wang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Zhenzhen Tang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Hongbin Chen
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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Torres-Herrera S, Palomares-Cortés J, González-Cortés JJ, Cubides-Páez DF, Gamisans X, Cantero D, Ramírez M. Biodesulfurization of landfill biogas by a pilot-scale bioscrubber: Operational limits and microbial analysis. ENVIRONMENTAL RESEARCH 2024; 246:118164. [PMID: 38211717 DOI: 10.1016/j.envres.2024.118164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/07/2024] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
Biogas serves as a crucial renewable energy vector to ensure a more sustainable energy future. However, the presence of hydrogen sulfide (H2S) limits its application in various sectors, emphasizing the importance of effective H2S removal techniques for maximizing its potential. In the present study, the limits of a pilot-scale bioscrubber for biogas desulfurization was study in a real scenario. An increase in the superficial liquid velocity resulted in significant improvements in the H2S removal efficiency, increasing from 76 ± 8% (elimination capacity of 6.2 ± 0.5 gS-H2S m-3 h-1) to 97.7 ± 0.5% (elimination capacity of 8 ± 1 gS-H2S m-3 h-1) as the superficial liquid velocity increased from 50 ± 3 m h-1 to 200 ± 8 m h-1. A USL of 161.4 ± 0.5 m h-1 was able to achieve outlet H2S concentrations as low as 3 ± 1 ppmv (H2S removal efficiency of 97 ± 1%) for 7 days. High superficial liquid velocity favoured the aerobic H2S oxidation reducing the nitrate demand. The maximum EC reached throughout the operation was 50.8 ± 0.6 gS-H2S m-3 h-1 (H2S removal efficiency of 96 ± 1%) and a sulfur production of 60%. Studies in batch flocculation experiments showed sulfur removal rates up to 97.6 ± 0.9% with a cationic flocculant dose of 75 mg L-1. Microbial analysis revealed that the predominant genus with sulfo-oxidant capacity during periods of low H2S inlet load was Thioalkalispira-sulfurivermis (61-69%), while in periods of higher H2S inlet load, family Arcobacteraceae was the most prevalent (11%).
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Affiliation(s)
- S Torres-Herrera
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO). Faculty of Sciences, University of Cadiz, Puerto Real, Cadiz, 11510, Spain
| | - J Palomares-Cortés
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO). Faculty of Sciences, University of Cadiz, Puerto Real, Cadiz, 11510, Spain
| | - J J González-Cortés
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO). Faculty of Sciences, University of Cadiz, Puerto Real, Cadiz, 11510, Spain
| | - D F Cubides-Páez
- Eurecat, Centre Tecnològic de Catalunya, Sustainability Area, Plaça de la Ciencia 2, Manresa, Barcelona, 08242, Spain
| | - X Gamisans
- Department of Mining, Industrial and ICT Engineering, Manresa School of Engineering, Universitat Politècnica de Catalunya, Manresa, Barcelona, 08242, Spain
| | - D Cantero
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO). Faculty of Sciences, University of Cadiz, Puerto Real, Cadiz, 11510, Spain
| | - M Ramírez
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO). Faculty of Sciences, University of Cadiz, Puerto Real, Cadiz, 11510, Spain.
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Zhang W, Bei K, Jin Z, Zhao M, Wu S, Jiang S, Jin H, Zheng X. Subtle magnesium liberation of self-fabricated functional filler actuates highly efficient phosphorus removal from source-separated urine by SBBR. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:24360-24374. [PMID: 38443536 DOI: 10.1007/s11356-024-32727-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 02/27/2024] [Indexed: 03/07/2024]
Abstract
Domestic wastewater source-separated treatment has attracted wide attention due to the efficiency improvement of sewage treatment systems, energy saving, resource reuse, and the construction and operation cost saving of pipeline networks. Nonetheless, the excess source-separated urine still demands further harmless treatment. Sequencing batch biofilm reactor (SBBR), a new type of composite biofilm reactor developed by filling different fillers into the sequential batch reactor (SBR) reactor, has higher pollutant removal performance and simpler operation and maintenance. However, the phosphorus removal ability of the SBBR filling with conventional fillers is still limited and needs further improvement. In this study, we developed two new fillers, the self-fabricated filler A and B (SFA/SFB), and compared their source-separated urine treatment performance. Long-term treatment experimental results demonstrated that the SBBR systems with different fillers had good removal performance on the COD and TN in the influent, and the removal rate increased with the increasing HRT. However, only the SBBR system with the SFA showed excellent PO43--P and TP removal performance, with the removal rates being 83.7 ± 11.9% and 77.3 ± 13.7% when the HRT was 1 d. Microbial community analysis results indicated that no special bacteria with strong phosphorus removal ability were present on the surface of the SFA. Adsorption experimental results suggested that the SFA had better adsorption performance for phosphorus than the SFB, but it could not always have stronger phosphorus adsorption and removal performance during long-term operation due to the adsorption saturation. Through a series of characterizations such as SEM, XRD, and BET, it was found that the SFA had a looser structure due to the use of different binder and production processes, and the magnesium in the SFA gradually released and reacted with PO43- and NH4+ in the source-separated urine to form dittmarite and struvite, thus achieving efficient phosphorus removal. This study provides a feasible manner for the efficient treatment of source-separated urine using the SBBR system with self-fabricated fillers.
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Affiliation(s)
- Weinan Zhang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Ke Bei
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Zhan Jin
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Min Zhao
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Suqing Wu
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Shunfeng Jiang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Huachang Jin
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China
| | - Xiangyong Zheng
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, China.
- National and Local Joint Engineering Research Center of Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China.
- Zhejiang Provincial Engineering Laboratory for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou, 325035, China.
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7
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Deng C, Chen T, Qiu Z, Zhou H, Li B, Zhang Y, Xu X, Lian C, Qiao X, Yu K. A mixed blessing of influent leachate microbes in downstream biotreatment systems of a full-scale landfill leachate treatment plant. WATER RESEARCH 2024; 253:121310. [PMID: 38368734 DOI: 10.1016/j.watres.2024.121310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/04/2024] [Accepted: 02/12/2024] [Indexed: 02/20/2024]
Abstract
In landfill leachate treatment plants (LLTPs), the microbiome plays a pivotal role in the decomposition of organic compounds, reduction in nutrient levels, and elimination of toxins. However, the effects of microbes in landfill leachate influents on downstream treatment systems remain poorly understood. To address this knowledge gap, we collected 23 metagenomic and 12 metatranscriptomic samples from landfill leachate and activated sludge from various treatment units in a full-scale LLTP. We successfully recovered 1,152 non-redundant metagenome-assembled genomes (MAGs), encompassing a wide taxonomic range, including 48 phyla, 95 classes, 166 orders, 247 families, 238 genera, and 1,152 species. More diverse microbes were observed in the influent leachate than in the downstream biotreatment systems, among which, an unprecedented ∼30 % of microbes with transcriptional expression migrated from the influent to the biological treatment units. Network analysis revealed that 399 shared MAGs across the four units exhibited high node centrality and degree, thus supporting enhanced interactions and increased stability of microbial communities. Functional reconstruction and genome characterization of MAGs indicated that these shared MAGs possessed greater capabilities for carbon, nitrogen, sulfur, and arsenic metabolism compared to non-shared MAGs. We further identified a novel species of Zixibacteria in the leachate influent with discrete lineages from those in other environments that accounted for up to 17 % of the abundance of the shared microbial community and exhibited notable metabolic versatility. Meanwhile, we presented groundbreaking evidence of the involvement of Zixibacteria-encoded genes in the production of harmful gas emissions, such as N2O and H2S, at the transcriptional level, thus suggesting that influent microbes may pose safety risks to downstream treatment systems. In summary, this study revealed the complex impact of the influent microbiome on LLTP and emphasizes the need to consider these microbial characteristics when designing treatment technologies and strategies for landfill leachate management.
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Affiliation(s)
- Chunfang Deng
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China; College of Environmental Sciences and Engineering, Key Laboratory of Water and Sediment Sciences, Ministry of Education, Peking University, Beijing, 100871, China
| | - Tianyi Chen
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China; College of Environmental Sciences and Engineering, Key Laboratory of Water and Sediment Sciences, Ministry of Education, Peking University, Beijing, 100871, China
| | - Zhiguang Qiu
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Hong Zhou
- Academy of Agriculture and Forestry Sciences, Qinghai University, Xining, 810000, China
| | - Bing Li
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Yuanyan Zhang
- Jiangxi Academy of Eco-Environmental Sciences & Planning, Nanchang 330029, PR China
| | - Xuming Xu
- Institute of Water Ecology and Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
| | - Chunang Lian
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Xuejiao Qiao
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Ke Yu
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
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Al-Hazmi HE, Hassan GK, Kurniawan TA, Śniatała B, Joseph TM, Majtacz J, Piechota G, Li X, El-Gohary FA, Saeb MR, Mąkinia J. Technological solutions to landfill management: Towards recovery of biomethane and carbon neutrality. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120414. [PMID: 38412730 DOI: 10.1016/j.jenvman.2024.120414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/23/2023] [Accepted: 02/15/2024] [Indexed: 02/29/2024]
Abstract
Inadequate landfill management poses risks to the environment and human health, necessitating action. Poorly designed and operated landfills release harmful gases, contaminate water, and deplete resources. Aligning landfill management with the Sustainable Development Goals (SDGs) reveals its crucial role in achieving various targets. Urgent transformation of landfill practices is necessary to address challenges like climate change, carbon neutrality, food security, and resource recovery. The scientific community recognizes landfill management's impact on climate change, evidenced by in over 191 published articles (1998-2023). This article presents emerging solutions for sustainable landfill management, including physico-chemical, oxidation, and biological treatments. Each technology is evaluated for practical applications. The article emphasizes landfill management's global significance in pursuing carbon neutrality, prioritizing resource recovery over end-of-pipe treatments. It is important to note that minimizing water, chemical, and energy inputs in nutrient recovery is crucial for achieving carbon neutrality by 2050. Water reuse, energy recovery, and material selection during manufacturing are vital. The potential of water technologies for recovering macro-nutrients from landfill leachate is explored, considering feasibility factors. Integrated waste management approaches, such as recycling and composting, reduce waste and minimize environmental impact. It is conclusively evident that the water technologies not only facilitate the purification of leachate but also enable the recovery of valuable substances such as ammonium, heavy metals, nutrients, and salts. This recovery process holds economic benefits, while the conversion of CH4 and hydrogen into bioenergy and power generation through microbial fuel cells further enhances its potential. Future research should focus on sustainable and cost-effective treatment technologies for landfill leachate. Improving landfill management can mitigate the adverse environmental and health effects of inadequate waste disposal.
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Affiliation(s)
- Hussein E Al-Hazmi
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, Gdańsk, 80-233, Poland.
| | - Gamal K Hassan
- Water Pollution Research Department, National Research Centre, 33 Bohouth St, Giza, Dokki, P.O. Box 12622, Egypt.
| | | | - Bogna Śniatała
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, Gdańsk, 80-233, Poland
| | - Tomy Muringayil Joseph
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza 11/12 80-233, Gdańsk, Poland
| | - Joanna Majtacz
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, Gdańsk, 80-233, Poland
| | - Grzegorz Piechota
- GPCHEM. Laboratory of Biogas Research and Analysis, ul. Legionów 40a/3, Toruń, 87-100, Poland
| | - Xiang Li
- School of Environmental Science & Engineering, Donghua Univerisity, Dept Env. Room 4155, 2999 North Renmin Rd, Songjiang District, Shanghai, China
| | - Fatma A El-Gohary
- Water Pollution Research Department, National Research Centre, 33 Bohouth St, Giza, Dokki, P.O. Box 12622, Egypt
| | - Mohammad Reza Saeb
- Department of Pharmaceutical Chemistry, Medical University of Gdańsk, J. Hallera 107, 80-416, Gdańsk, Poland
| | - Jacek Mąkinia
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, ul. Narutowicza 11/12, Gdańsk, 80-233, Poland
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Chen H, Xu H, Zhong C, Liu M, Yang L, He J, Sun Y, Zhao C, Wang D. Treatment of landfill leachate by coagulation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169294. [PMID: 38110093 DOI: 10.1016/j.scitotenv.2023.169294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/06/2023] [Accepted: 12/09/2023] [Indexed: 12/20/2023]
Abstract
Landfill leachate is a seriously polluted and hazardous liquid, which contains a high concentration of refractory organics, ammonia nitrogen, heavy metals, inorganic salts, and various suspended solids. The favorable disposal of landfill leachate has always been a hot and challenging issue in wastewater treatment. As one of the best available technologies for landfill leachate disposal, coagulation has been studied extensively. However, there is an absence of a systematic review regarding coagulation in landfill leachate treatment. In this paper, a review focusing on the characteristics, mechanisms, and application of coagulation in landfill leachate treatment was provided. Different coagulants and factors influencing the coagulation effect were synthetically summarized. The performance of coagulation coupled with other processes and their complementary advantages were elucidated. Additionally, the economic analysis conducted in this study suggests the cost-effectiveness of the coagulation process. Based on previous studies, challenges and perspectives met by landfill leachate coagulation treatment were also put forward. Overall, this review will provide a reference for the coagulation treatment of landfill leachate and promote the development of efficient and eco-friendly leachate treatment technology.
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Affiliation(s)
- Hongni Chen
- School of Civil Engineering, Chang'an University, Xi'an 710061, China
| | - Hui Xu
- Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning 530006, China
| | - Chao Zhong
- School of Civil Engineering, Chang'an University, Xi'an 710061, China
| | - Mingjie Liu
- School of Civil Engineering, Chang'an University, Xi'an 710061, China
| | - Liwei Yang
- School of Civil Engineering, Chang'an University, Xi'an 710061, China
| | - Jiaojie He
- School of Civil Engineering, Chang'an University, Xi'an 710061, China
| | - Yan Sun
- School of Civil Engineering, Chang'an University, Xi'an 710061, China
| | - Chuanliang Zhao
- School of Civil Engineering, Chang'an University, Xi'an 710061, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Dongsheng Wang
- College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
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Ishaq A, Said MIM, Azman SB, Abdulwahab MF, Houmsi MR, Jagun ZT. The effect of ammonia concentration on the treatment of bio electrochemical leachate using MFCs technology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-31472-x. [PMID: 38151563 DOI: 10.1007/s11356-023-31472-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/06/2023] [Indexed: 12/29/2023]
Abstract
Microbial fuel cells (MFCs) have garnered attention in bio-electrochemical leachate treatment systems. The most common forms of inorganic ammonia nitrogen are ammonium ([Formula: see text]) and free ammonia. Anaerobic digestion can be inhibited in both direct (changes in environmental conditions, such as fluctuations in temperature or pH, can indirectly hinder microbial activity and the efficiency of the digestion process) and indirect (inadequate nutrient levels, or other conditions that indirectly compromise the microbial community's ability to carry out anaerobic digestion effectively) ways by both kinds. The performance of a double-chamber MFC system-composed of an anodic chamber, a cathode chamber with fixed biofilm carriers (carbon felt material), and a Nafion 117 exchange membrane is examined in this work to determine the impact of ammonium nitrogen ([Formula: see text]) inhibition. MFCs may hold up to 100 mL of fluid. Therefore, the bacteria involved were analysed using 16S rRNA. At room temperature, with a concentration of 800 mg L-1 of ammonium nitrogen and 13,225 mg L-1 of chemical oxygen demand (COD), the study produced a considerable power density of 234 mWm-3. It was found that [Formula: see text] concentrations above 800 mg L-1 have an inhibitory influence on power output and treatment effectiveness. Multiple routes removed the most nitrogen ([Formula: see text]-N: 87.11 ± 0.7%, NO2 -N: 93.17 ± 0.2% and TN: 75.24 ± 0.3%). Results from sequencing indicate that the anode is home to a rich microbial community, with anammox (6%), denitrifying (6.4%), and electrogenic bacteria (18.2%) making up the bulk of the population. Microbial fuel cells can efficiently and cost-effectively execute anammox, a green nitrogen removal process, in landfill leachate.
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Affiliation(s)
- Aliyu Ishaq
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
| | - Mohd Ismid Mohd Said
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
| | - Shamila Binti Azman
- Department of Biosciences, Faculty of Sciences, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Mohd Firdaus Abdulwahab
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
| | | | - Zainab Toyin Jagun
- Department of Real Estate, School of Built Environment Engineering and Computing, Leeds Beckett University, City Campus, Leeds, UK.
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11
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Xie H, Chen Y, Zhu X, Bouazza A, Yan H. Numerical simulation of different pollutant control measures around an old landfill contaminated site: A field scale study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119350. [PMID: 37866188 DOI: 10.1016/j.jenvman.2023.119350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/06/2023] [Accepted: 10/14/2023] [Indexed: 10/24/2023]
Abstract
The remediation of contaminated soils is a great challenge for global environmental sciences and engineering. The landfill was a kind of infrastructure to deal with waste from different sources while it would also cause the threat to groundwater. Cut-off walls and pumping wells were usually applied in the landfill to prevent the spread of pollutants to wider areas. However, the combination of using both of methods was rarely analyzed, especially using field data for calibrating and fitting groundwater flow and pollutant transport. 7 monitoring wells were arranged in the study area to survey the subsurface seepage. The pollution monitoring was carried out for a period of 50 days, covering 31 types of inorganic and organic pollutants. The concentration of 2,4,6-trichlorophenol (TCP) was 556.7 times greater than the standard concentration. A coupled numerical model of groundwater flow and pollutant transport was developed to assess the effectiveness of various control methods. Three options were tested, including the implementation of a single cut-off wall as well as a combination of a cut-off wall and a pumping well, for preventing the discharge of pollutants from landfills. The combination of a cut-off wall and a pumping well is the best strategy for removal of TCP. The combination approaches lead to a reduction of pollution plumes by a factor of 11 compared to the case without pollution control measures. The research findings may provide a basis and reference for the application of cutoff walls and pumping well in landfill sites or contaminated groundwater.
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Affiliation(s)
- Haijian Xie
- Center for Balance Architecture, Zhejiang University, 148 Tianmushan Road, Hanghzou 310007, China; College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China
| | - Yang Chen
- Center for Balance Architecture, Zhejiang University, 148 Tianmushan Road, Hanghzou 310007, China
| | - Xianghong Zhu
- Zhejiang Institute of Architectural Science & Design Co.Ltd, Hangzhou, 310000, China
| | - Abdelmalek Bouazza
- Department of Civil Engineering, 23 College Walk, Monash University, Vic. 3800, Australia
| | - Huaxiang Yan
- Center for Balance Architecture, Zhejiang University, 148 Tianmushan Road, Hanghzou 310007, China.
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12
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Ishaq A, Said MIM, Azman SB, Dandajeh AA, Lemar GS, Jagun ZT. Utilization of microbial fuel cells as a dual approach for landfill leachate treatment and power production: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-30841-w. [PMID: 38012494 DOI: 10.1007/s11356-023-30841-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/26/2023] [Indexed: 11/29/2023]
Abstract
Landfill leachate, which is a complicated organic sewage water, presents substantial dangers to human health and the environment if not properly handled. Electrochemical technology has arisen as a promising strategy for effectively mitigating contaminants in landfill leachate. In this comprehensive review, we explore various theoretical and practical aspects of methods for treating landfill leachate. This exploration includes examining their performance, mechanisms, applications, associated challenges, existing issues, and potential strategies for enhancement, particularly in terms of cost-effectiveness. In addition, this critique provides a comparative investigation between these treatment approaches and the utilization of diverse kinds of microbial fuel cells (MFCs) in terms of their effectiveness in treating landfill leachate and generating power. The examination of these technologies also extends to their use in diverse global contexts, providing insights into operational parameters and regional variations. This extensive assessment serves the primary goal of assisting researchers in understanding the optimal methods for treating landfill leachate and comparing them to different types of MFCs. It offers a valuable resource for the large-scale design and implementation of processes that ensure both the safe treatment of landfill leachate and the generation of electricity. The review not only provides an overview of the current state of landfill leachate treatment but also identifies key challenges and sets the stage for future research directions, ultimately contributing to more sustainable and effective solutions in the management of this critical environmental issue.
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Affiliation(s)
- Aliyu Ishaq
- Department of Water and Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Kaduna, Nigeria
| | - Mohd Ismid Mohd Said
- Department of Water and Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia
| | - Shamila Binti Azman
- Department of Water and Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81300, Johor Bahru, Malaysia
| | - Aliyu Adamu Dandajeh
- Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Kaduna, Nigeria
| | - Gul Sanga Lemar
- Department of Biology, Faculty of Science, Kabul University, Jamal Mina, Kabul, Afghanistan
- Faculty of Biology, Department of Botany, Kabul University, Kart-e-Char, Kabul, Afghanistan
| | - Zainab Toyin Jagun
- Department of Real Estate, School of Built Environment Engineering and Computing, Leeds Beckett University, City Campus, Leeds, UK.
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13
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Zhang H, Xu C, Jiang W, Xi S, Huang J, Zheng M, Wang W, He C. Effects of zinc ion concentrations on the performance of SBR treating livestock wastewater and analysis of microbial community. ENVIRONMENTAL RESEARCH 2023; 236:116787. [PMID: 37517494 DOI: 10.1016/j.envres.2023.116787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Zinc ion (Zn2+) is a frequently occurring heavy metal in livestock wastewater. The effects of Zn2+ on the physicochemical properties and the microbial distribution of activated sludge are essential to controlling nitrogen removal performance. Nevertheless, there are raw studies on the effects of Zn2+ on nitrogen removal. This study investigated the effect of Zn2+ on the treatment performance of livestock wastewater in a sequencing batch reactor (SBR). The results indicated the low Zn2+ concentrations could improve nitrogen removal performance. However, as the Zn2+ concentration increased, the total nitrogen (TN) removal performance of the reactor gradually deteriorated. When the Zn2+ concentration was 90.00 mg/L, the TN removal efficiency was the lowest, only 2.40%. The contents of the Extracellular polymeric substance (EPS) presented a trend of first increasing and then decreasing with the increase of Zn2+ concentration, and the main reason was the decrease of protein-like and tryptophan-like. The 16SrRNA analysis indicated that Zn2+ within a specific concentration could increase the operational taxonomic units (OTUs) number, microbial richness, and diversity of microorganisms in the SBR. However, with Zn2+ concentration exceeding 10.00 mg/L, the relative abundance of denitrification functional bacteria (Dechloromonas, Nitrospira, and Thauera) decreased.
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Affiliation(s)
- Hua Zhang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Chong Xu
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Wei Jiang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Shanshan Xi
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Jian Huang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Mengqi Zheng
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Wei Wang
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Chunhua He
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China.
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Priyanka K, Behera M, Remya N. Greywater treatment in SBR-SND reactor - optimization of hydraulic retention time, volumetric exchange ratio and sludge retention time. ENVIRONMENTAL TECHNOLOGY 2023; 44:3791-3802. [PMID: 35482426 DOI: 10.1080/09593330.2022.2072238] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/25/2022] [Indexed: 06/14/2023]
Abstract
In this study, simultaneous nitrification and denitrification-sequencing batch reactor (SND-SBR) process was investigated to treat greywater. The effect of three process parameters, including hydraulic retention time (HRT), volumetric exchange ratio (VER) and sludge retention time (SRT), was optimised using a 23 full factorial design. The statistic model was developed for two response variables, i.e. chemical oxygen demand (COD) and ammonia (NH3-N) removal. The optimum conditions were 6.8 h HRT (anaerobic/aerobic/anoxic: 1.77 h/2.77 h/2.27 h), 0.7 VER and 7.94 d SRT, which resulted in 93.9% COD and 84.6% NH3-N removal efficiency. SRT was the most significant factor, followed by HRT and VER for COD and NH3-N removal. The interaction effect of VER and SRT was significant in COD removal. On the other hand, the interaction effects of HRT-VER and HRT-SRT were significant in NH3-N removal. The removal efficiencies of 89.6 ± 1.1% and 83.7 ± 2.3% were observed for TKN and TN, respectively, in the optimised SND-SBR system. NH3-N removal was obtained via nitrate pathway in the SND-SBR system. The PO43--P removal of 74.2 ± 3.4% was obtained via aerobic phosphorus uptake and post anoxic denitrification at the optimal condition. To enhance PO43--P removal, adsorption (using corn cob adsorbent) was integrated with SBR by adding the optimum adsorbent dose (0.5 g/L). The PO43--P removal efficiency in the SBR-adsorption system was found to be 80 ± 1.5%. The biodegradation of emerging contaminants (ECs) was also carried out in the SND-SBR system, and the results showed removal rate of 58.9 ± 2.3% benzophenone-3 (BP) and 80.1 ± 2.2% anionic surfactant (AS).
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Affiliation(s)
- Kumari Priyanka
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Manaswini Behera
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Neelancherry Remya
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
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15
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Yuan X, Cui K, Chen Y, Zhang Y, Wu S, Xie X, Liu T, Yao H. Microbial community and gene dynamics response to high concentrations of gadolinium and sulfamethoxazole in biological nitrogen removal system. CHEMOSPHERE 2023; 342:140218. [PMID: 37734503 DOI: 10.1016/j.chemosphere.2023.140218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
The impact of high antibiotic and heavy metal pollution levels on biological nitrogen removal in wastewater treatment plants (WWTPs) remains poorly understood, posing a global concern regarding the issue spread of antibiotic resistance induced by these contaminants. Herein, we investigated the effects of gadolinium (Gd) and sulfamethoxazole (SMX), commonly found in medical wastewater, on biological nitrogen removal systems and microbial characteristics, and the fate of antibiotic resistance genes (ARGs), metal resistance genes (MRGs), and mobile genetic elements (MGEs). Our findings indicated that high SMX and Gd(III) concentrations adversely affected nitrification and denitrification, with Gd(III) exerting a strong inhibitory effect on microbial activity. Metagenomic analysis revealed that high SMX and Gd(III) concentrations could reduce microbial diversity, with Thauera and Pseudomonas emerging as dominant genera across all samples. While the relative abundance of most ARGs decreased under single Gd(III) stress, MRGs increased, and nitrification functional genes were inhibited. Conversely, combined SMX and Gd(III) pollution increased the relative abundance of intl1. Correlation analysis revealed that most genera could host ARGs and MRGs, indicating co-selection and competition between these resistance genes. However, most denitrifying functional genes exhibited a positive correlation with MRGs. Overall, our study provides novel insights into the impact of high concentrations of antibiotics and heavy metal pollution in WWTPs, and laying the groundwork for the spread and proliferation of resistance genes under combined SMX and Gd pollution.
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Affiliation(s)
- Xinrui Yuan
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Kangping Cui
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
| | - Yihan Chen
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yao Zhang
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Shiyang Wu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Xianjin Xie
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Tong Liu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Hongjia Yao
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China
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16
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Safarzadeh Ravajiri E, Houshfar E. 4E analysis and tri-objective optimization of a landfill plant integrated with power-to-gas and leachate treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118520. [PMID: 37399627 DOI: 10.1016/j.jenvman.2023.118520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/13/2023] [Accepted: 06/24/2023] [Indexed: 07/05/2023]
Abstract
Management of waste is essential since waste production has increased drastically. Landfilling is prevalent in controlling and managing wastes, particularly municipal solid wastes. Tackling the environmental problems of landfill is the goal of this work. The outputs of the landfill are biogas and leachate, which are hazardous to the environment. This problem can be solved by using the power-to-gas system and leachate treatment plant. The leachate has the potential to produce biogas, and the CO2 in biogas can be converted to methane in the methanation unit of power to gas. For this, power-to-gas needs the electricity in the electrolyzer, which can be provided from the surplus electricity of available renewables (here solar photovoltaics and wind turbine). Energy, exergy, economic and environmental analyses are applied to the system, and tri-objective optimization by the genetic algorithm is performed to gain optimum results. The obtained exergy efficiency from the given data is 19.03%. Also, the energy efficiency, net electricity generation, methane production rate, total annual cost, and CO2 conversion are 19.51%, 4.24 MW, 176.63 kg/h, €1.8 million, and 82.42%, respectively. In the ideal point of tri-objective optimization, the exergy efficiency, total annual cost, and CO2 conversion become 26.16%, €1.31 million, and 96.57%, respectively.
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Affiliation(s)
- Eshagh Safarzadeh Ravajiri
- School of Mechanical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
| | - Ehsan Houshfar
- School of Mechanical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran.
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17
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Mishra S, Singh AK, Cheng L, Hussain A, Maiti A. Occurrence of antibiotics in wastewater: Potential ecological risk and removal through anaerobic-aerobic systems. ENVIRONMENTAL RESEARCH 2023; 226:115678. [PMID: 36921787 DOI: 10.1016/j.envres.2023.115678] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
Antibiotics are intensively used to improve public health, prevent diseases and enhance productivity in animal farms. Contrarily, when released, the antibiotics laden wastewater produced from pharmaceutical industries and their application sources poses a potential ecological risk to the environment. This study provides a discussion on the occurrence of various antibiotics in wastewater and their potential ecological risk in the environment. Further, a critical review of anaerobic-aerobic processes based on three major systems (such as constructed wetland, high-rate bioreactor, and integrated treatment technologies) applied for antibiotics removal from wastewater is performed. The review also explores microbial dynamics responsible for antibiotic biodegradation in anaerobic-aerobic systems and its economic feasibility at wider-scale applications. The operational problems and prospective modifications are discussed to define key future research directions. The appropriate selection of treatment processes, sources control, understanding of antibiotic fate, and adopting precise monitoring strategies could eliminate the potential ecological risks of antibiotics. Integrated bio-electrochemical systems exhibit antibiotics removal ≥95% by dominant Geobacter sp. at short HRT ∼4-10 h. Major process factors like organic loading rate, hydraulic loading rate (HRT), and solid retention time significantly affect the system performance. This review will be beneficial to the researchers by providing in-depth understanding of antibiotic pollution and its abatement via anaerobic-aerobic processes to develop sustainable wastewater treatment technology in the future.
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Affiliation(s)
- Saurabh Mishra
- College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu Province, 210098, China; College of Environment, Hohai University, Nanjing, Jiangsu Province, 210098, China.
| | - Anurag Kumar Singh
- University School of Chemical Technology, Guru Govind Singh Indraprastha University, Sector 16c Dwarka, New Delhi, 110078, India
| | - Liu Cheng
- College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu Province, 210098, China; College of Environment, Hohai University, Nanjing, Jiangsu Province, 210098, China.
| | - Abid Hussain
- Department of Civil and Environmental Engineering, Carleton University, Mackenzie Building, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada
| | - Abhijit Maiti
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247001, India
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Ersahin ME, Cicekalan B, Cengiz AI, Zhang X, Ozgun H. Nutrient recovery from municipal solid waste leachate in the scope of circular economy: Recent developments and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 335:117518. [PMID: 36841005 DOI: 10.1016/j.jenvman.2023.117518] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/11/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
Holistically considering the current situation of the commercial synthetic fertilizer (CSF) market, recent global developments, and future projection studies, dependency on CSFs in agricultural production born significant risks, especially to the food security of foreign-dependent countries. The foreign dependency of countries in terms of CSFs can be reduced by the concepts such as the circular economy and resource recovery. Recently, waste streams are considered as a source in order to produce recovery-based fertilizers (RBF). RBFs produced from different waste streams can be substituted with CSFs as input for agricultural applications. Municipal solid waste leachate (MSWL) is one of the waste streams that have a high potential for RBF production. Distribution of the published papers over the years shows that this potential was noticed by more researchers in the millennium. MSWL contains a remarkable amount of nitrogen and phosphorus which are the main nutrients required for agricultural production. These nutrients can be recovered with many different methods such as microalgae cultivation, chemical precipitation, ammonia stripping, membrane separation, etc. MSWL can be generated within the different phases of municipal solid waste (MSW) management. Although it is mainly composed of landfill leachate (LL), composting plant leachate (CPL), incineration plant leachate (IPL), and transfer station leachate (TSL) should be considered as potential sources to produce RBF. This study compiles studies conducted on MSWL from the perspective of nitrogen and phosphorus recovery. Moreover, recent developments and limitations of the subject were extensively discussed and future perspectives were introduced by considering the entire MSW management. Investigated studies in this review showed that the potential of MSWL to produce RBF is significant. The outcomes of this paper will serve the countries for ensuring their food security by implementing the resource recovery concept to produce RBF. Thus, the risks born with the recent global developments could be overcome in this way besides the positive environmental outcomes of resource recovery.
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Affiliation(s)
- Mustafa Evren Ersahin
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey; National Research Center on Membrane Technologies, Istanbul Technical University, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey.
| | - Busra Cicekalan
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey
| | - Ali Izzet Cengiz
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey
| | - Xuedong Zhang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Hale Ozgun
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey; National Research Center on Membrane Technologies, Istanbul Technical University, Ayazaga Campus, Maslak, 34469, Istanbul, Turkey
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19
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Noor A, Mohamed Kutty SR, Baloo L, Affam AC, Jagaba AH, Saeed Ghaleb AA, Yahya Almahbashi NM, Ahmad T, Nawab MS, Birniwa AH. Parametric optimization of additive manufactured biocarrier submerged in sequencing batch reactor for domestic wastewater treatment. Heliyon 2023; 9:e14840. [PMID: 37025813 PMCID: PMC10070916 DOI: 10.1016/j.heliyon.2023.e14840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/21/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
The high nutrient concentration in domestic wastewater effluent can endanger the aquatic life via eutrophication. Thus, research have been carried out to prevent harm to aquatic life. In regard biofilm reactors have been successful by far with few limitations. Bio-carrier fabrication of desired shape is one of the limitations. Recently, the invention of additive manufacturing (AM) of object made it feasible to fabricate the desired shape. In this study additive manufactured bio‒carrier (AMB) was printed using AM technique, with high surface area to volume ratio as well as density higher than water. The submerged attach growth sequencing batch biofilm reactor (SAGSBBR) for organic and nutrient removal from domestic wastewater (DWW) was conducted to determine the optimum bio‒carrier filling ratio (FR) and cycle time (CT) by using response surface methodology (RSM) with CT ranging between 12 h and 24 h and FR ranging between 0 and 20%. The maximum chemical oxygen demand (COD), ammonia-nitrogen (NH4 +‒N), and total phosphorus (TP) removal was 96.8 mg/L, 93.32 mg/L, and 88.89 mg/L respectively, which was achieved in submerged attached growth sequential biofilm batch reactor with 10% FR (SAGSBBR‒10). The optimization study determined the optimal solution of CT and FR to be 17.07 h and 12.38% respectively, with desirability of 0.987. The predicted mean of responses for the optimal solution were 96.64%, 94.40% and 89.94% for COD removal, NH4 +‒N removal and TP removal, respectively. The rate of biomass attachment at the first stage in SAGSBBR‒10 and SAGSBBR‒20 was about 11.39 mg/carrier.d and 8.64 mg/carrier.d, whereas the highest accumulation achieved was 98.27 mg/carrier and 80.15 mg/carrier respectively. Thus, this study can assist us to achieve sustainable development goal (SDG) 6.
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Affiliation(s)
- Azmatullah Noor
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Corresponding author.
| | - Shamsul Rahman Mohamed Kutty
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Lavania Baloo
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Augustine Chioma Affam
- Centre for Research of Innovation and Sustainable Development, University of Technology Sarawak, No. 1, Jalan University, 96000, Sibu, Malaysia
| | - Ahmad Hussaini Jagaba
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
- Department of Civil Engineering, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - Aiban Abdulhakim Saeed Ghaleb
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Najib Mohammed Yahya Almahbashi
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Tarique Ahmad
- Department of Civil Engineering, College of Engineering, Jazan University, Jazan, Kingdom of Saudi Arabia
| | - Mohammad Sadique Nawab
- Department of Civil Engineering, College of Engineering, Shaqra University, Dawadmi, Kingdom of Saudi Arabia
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20
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Yadav RK, Das S, Patil SA. Are integrated bioelectrochemical technologies feasible for wastewater management? Trends Biotechnol 2023; 41:484-496. [PMID: 36192248 DOI: 10.1016/j.tibtech.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/23/2022] [Accepted: 09/02/2022] [Indexed: 10/14/2022]
Abstract
The need for sustainable technological solutions for wastewater management at different scales has led to the emergence of several promising integrated bioelectrochemical technologies in the past decade. A thorough assessment of these technologies is imperative to understand their practical implementation feasibility and to identify the key challenges to prioritise the research and development work. Our multicriteria-based assessment reveals that the integrated technologies are efficient for wastewater treatment in terms of normalised land footprint [(0.31-1.39 m2/population equivalent (PE))] - and energy consumption (0.18-1.49 kWH/m3) as compared to the conventional biotechnologies, and suggests that they have potential for real-world application. Specifying the boundaries according to their treatment capabilities and scale-up potential besides niche application sites or geographical locations is required to expedite their transition to the real-world wastewater management sector.
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Affiliation(s)
- Ravi K Yadav
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS, Nagar, 140306, Punjab, India
| | - Sovik Das
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS, Nagar, 140306, Punjab, India; Present address: Department of Civil Engineering, Indian Institute of Technology, Delhi, 110016, New Delhi, India
| | - Sunil A Patil
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali (IISER Mohali), Knowledge City, Sector 81, SAS, Nagar, 140306, Punjab, India.
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21
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Mendoza-Burguete Y, de la Luz Pérez-Rea M, Ledesma-García J, Campos-Guillén J, Ramos-López MA, Guzmán C, Rodríguez-Morales JA. Global Situation of Bioremediation of Leachate-Contaminated Soils by Treatment with Microorganisms: A Systematic Review. Microorganisms 2023; 11:microorganisms11040857. [PMID: 37110280 PMCID: PMC10145224 DOI: 10.3390/microorganisms11040857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/17/2023] [Accepted: 03/18/2023] [Indexed: 03/30/2023] Open
Abstract
This systematic review presents the current state of research in the last five years on contaminants in soils, especially in leachates from solid waste landfills, with emphasis on biological remediation. In this work, the pollutants that can be treated by microorganisms and the results obtained worldwide were studied. All the data obtained were compiled, integrated, and analyzed by soil type, pollutant type, bacterial type, and the countries where these studies were carried out. This review provides reliable data on the contamination of soils worldwide, especially soils contaminated by leachate from municipal landfills. The extent of contamination, treatment objectives, site characteristics, cost, type of microorganisms to be used, and time must be considered when selecting a viable remediation strategy. The results of this study can help develop innovative and applicable methods for evaluating the overall contamination of soil with different contaminants and soil types. These findings can help develop innovative, applicable, and economically feasible methods for the sustainable management of contaminated soils, whether from landfill leachate or other soil types, to reduce or eliminate risk to the environment and human health, and to achieve greater greenery and functionality on the planet.
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22
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khalidi-idrissi A, Madinzi A, Anouzla A, Pala A, Mouhir L, Kadmi Y, Souabi S. Recent advances in the biological treatment of wastewater rich in emerging pollutants produced by pharmaceutical industrial discharges. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY : IJEST 2023; 20:1-22. [PMID: 37360558 PMCID: PMC10019435 DOI: 10.1007/s13762-023-04867-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 12/19/2022] [Accepted: 02/22/2023] [Indexed: 06/28/2023]
Abstract
Pharmaceuticals and personal care products present potential risks to human health and the environment. In particular, wastewater treatment plants often detect emerging pollutants that disrupt biological treatment. The activated sludge process is a traditional biological method with a lower capital cost and limited operating requirements than more advanced treatment methods. In addition, the membrane bioreactor combines a membrane module and a bioreactor, widely used as an advanced method for treating pharmaceutical wastewater with good pollution performance. Indeed, the fouling of the membrane remains a major problem in this process. In addition, anaerobic membrane bioreactors can treat complex pharmaceutical waste while recovering energy and producing nutrient-rich wastewater for irrigation. Wastewater characterizations have shown that wastewater's high organic matter content facilitates the selection of low-cost, low-nutrient, low-surface-area, and effective anaerobic methods for drug degradation and reduces pollution. However, to improve the biological treatment, researchers have turned to hybrid processes in which all physical, chemical, and biological treatment methods are integrated to remove various emerging contaminants effectively. Hybrid systems can generate bioenergy, which helps reduce the operating costs of the pharmaceutical waste treatment system. To find the most effective treatment technique for our research, this work lists the different biological treatment techniques cited in the literature, such as activated sludge, membrane bioreactor, anaerobic treatment, and hybrid treatment, combining physicochemical and biological techniques.
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Affiliation(s)
- A. khalidi-idrissi
- Laboratory of Process Engineering and Environment, Faculty of Science and Technology, Mohammedia, University Hassan II of Casablanca, BP. 146, Mohammedia, Morocco
| | - A. Madinzi
- Laboratory of Process Engineering and Environment, Faculty of Science and Technology, Mohammedia, University Hassan II of Casablanca, BP. 146, Mohammedia, Morocco
| | - A. Anouzla
- Laboratory of Process Engineering and Environment, Faculty of Science and Technology, Mohammedia, University Hassan II of Casablanca, BP. 146, Mohammedia, Morocco
| | - A. Pala
- Environmental Research and Development Center (CEVMER), Dokuz Eylul University, Izmir, Turkey
| | - L. Mouhir
- Laboratory of Process Engineering and Environment, Faculty of Science and Technology, Mohammedia, University Hassan II of Casablanca, BP. 146, Mohammedia, Morocco
| | - Y. Kadmi
- CNRS, UMR 8516 - LASIR, University Lille, 59000 Lille, France
| | - S. Souabi
- Laboratory of Process Engineering and Environment, Faculty of Science and Technology, Mohammedia, University Hassan II of Casablanca, BP. 146, Mohammedia, Morocco
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23
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He Y, Huang Y, Wang Q, Pan X. Controlling waste by waste: a modified landfill leachate coagulation sludge activated peroxymonosulfate process achieves complete BPA degradation. ENVIRONMENTAL TECHNOLOGY 2023; 44:1027-1034. [PMID: 34641764 DOI: 10.1080/09593330.2021.1992511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
In this study, a modified coagulation sludge (MCS) from a real landfill leachate coagulation pretreatment was first prepared with polymerized ferric sulfate (PFS) as the activator for PMS to degrade bisphenol A (BPA). The results showed that 43.34% of BPA was adsorbed by MCS when [BPA]0 = 20 mg/L, [MCS]0 = 0.8 g/L, and time = 80 min. Thereafter, by adding 3000 mg/L PMS to initiate the oxidation process, complete BPA removal, i.e. 100%, was achieved in 60 min. In addition, in tap water and municipal wastewater scenarios, 100% and 90.07% removal of BPA were obtained, respectively, and MCS exhibited outstanding performance after repeated use. MCS displayed an excellent adsorption capacity in which chemical adsorption was the main effect, and hydroxyl radicals were the major contributor to BPA degradation. Characterizations of fresh and reacted MCS were conducted, and the results showed that the MCS structure was stable after repeated use, and the surface functional groups, surface defect sites, and iron oxides participated in PMS activation. Overall, this study demonstrated successful recycling of coagulation sludge from landfill leachate pretreatment to activate PMS for environmental pollution control, which is in accordance with the goal of using waste to control waste.
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Affiliation(s)
- Yanjuan He
- Sichuan Solid Waste and Chemicals Management Center, Chengdu, People's Republic of China
| | - Yuyu Huang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Qing Wang
- Xingrong Renewable Energy Co., Ltd, Chengdu, People's Republic of China
| | - Xuqin Pan
- Beijing Enterprises Water Group (BEWG), Beijing, People's Republic of China
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24
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Song J, Li M, Wang C, Fan Y, Li Y, Wang Y, Zhang W, Li H, Wang H. Enhanced treatment of landfill leachate by biochar-based aerobic denitrifying bacteria functional microbial materials: Preparation and performance. Front Microbiol 2023; 14:1139650. [PMID: 36846797 PMCID: PMC9945275 DOI: 10.3389/fmicb.2023.1139650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
Objective In this work, polyvinyl alcohol (PVA) and sodium alginate (SA) were used as entrapped carriers and Artemisia argyi stem biochar (ABC) was used as an absorption carrier to immobilize aerobic denitrifying bacteria screened from landfill leachate, thus a new carbon-based functional microbial material (PVA/SA/ABC@BS) was successfully prepared. Methods The structure and characteristics of the new material were revealed by using a scanning electron microscope and Fourier transform infrared spectroscopy, and the performance of the material for treating landfill leachate under different working conditions was studied. Results ABC had abundant pore structures and that the surface contained many oxygen-containing functional groups, carboxyl groups, and amide groups, etc. and it had good absorbing performance and strong acid and alkali buffering capacity, which was beneficial to the adhesion and proliferation of microorganisms. After adding ABC as a composite carrier, the damage rate of immobilized particles was decreased by 1.2%, and the acid stability, alkaline stability, and mass transfer performance were increased by 9.00, 7.00, and 56%, respectively. When the dosage of PVA/SA/ABC@BS was 0.017g/ml, the removal rates of nitrate nitrogen (NO3 --N) and ammonia nitrogen (NH4 +-N) were the highest, which were 98.7 and 59.4%, respectively. When the pH values were 11, 7, 1, and 9, the removal rates of chemical oxygen demand (COD), NO3 --N, nitrite nitrogen (NO2 --N) and NH4 +-N reached the maximum values, which were 14.39, 98.38, 75.87, and 79.31%, respectively. After PVA/SA/ABC@BS was reused in 5 batches, the removal rates of NO3 --N all reached 95.50%. Conclusion PVA, SA and ABC have excellent reusability for immobilization of microorganisms and degradation of nitrate nitrogen. This study can provide some guidance for the great application potential of immobilized gel spheres in the treatment of high concentration organic wastewater.
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Affiliation(s)
- Jianyang Song
- Henan Key Laboratory of Industrial Microbial Resources and Fermentation Technology, Nanyang Institute of Technology, Nanyang, China,School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China,School of Civil Engineering, Wuhan University, Wuhan, China,*Correspondence: Jianyang Song, ✉
| | - Minghui Li
- School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China,College of Ecology and Environment, Zhengzhou University, Zhengzhou, China
| | - Chunyan Wang
- Henan Key Laboratory of Industrial Microbial Resources and Fermentation Technology, Nanyang Institute of Technology, Nanyang, China
| | - Yujie Fan
- School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China
| | - Yuan Li
- School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China
| | - Yongkun Wang
- School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China
| | - Wenxiao Zhang
- School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China
| | - Haisong Li
- College of Ecology and Environment, Zhengzhou University, Zhengzhou, China
| | - Hongyu Wang
- School of Civil Engineering, Wuhan University, Wuhan, China
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25
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Mishra S, Singh V, Ormeci B, Hussain A, Cheng L, Venkiteshwaran K. Anaerobic-aerobic treatment of wastewater and leachate: A review of process integration, system design, performance and associated energy revenue. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 327:116898. [PMID: 36459783 DOI: 10.1016/j.jenvman.2022.116898] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Hybrid anaerobic-aerobic biological systems are an environmentally sustainable way of recovering bioenergy during the treatment of high-strength wastewaters and landfill leachate. This study provides a critical review of three major categories of anaerobic-aerobic processes such as conventional wetland, high-rate and integrated bioreactor systems applied for treatment of wastewaters and leachate. A comparative assessment of treatment mechanisms, critical operating parameters, bioreactor configurations, process control strategies, efficacies, and microbial dynamics of anaerobic-aerobic systems is provided. The review also explores the influence of wastewater composition on treatment performance, ammonium nitrogen removal efficacy, impact of mixing leachate, energy consumption, coupled bioenergy production and economic aspects of anaerobic-aerobic systems. Furthermore, the operational challenges, prospective modifications, and key future research directions are discussed. This review will provide in-depth understanding to develop sustainable engineering applications of anaerobic-aerobic processes for effective co-treatment of wastewaters and leachate.
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Affiliation(s)
- Saurabh Mishra
- College of Environment, Hohai University, Nanjing, Jiangsu Province, 210098, China; College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu Province, 210098, China.
| | - Virender Singh
- Department of Civil and Environmental Engineering, Carleton University, Mackenzie Building, 1125 Colonel By Drive, Ottawa, Ontario, ON K1S 5B6, Canada
| | - Banu Ormeci
- Department of Civil and Environmental Engineering, Carleton University, Mackenzie Building, 1125 Colonel By Drive, Ottawa, Ontario, ON K1S 5B6, Canada
| | - Abid Hussain
- Department of Civil and Environmental Engineering, Carleton University, Mackenzie Building, 1125 Colonel By Drive, Ottawa, Ontario, ON K1S 5B6, Canada
| | - Liu Cheng
- College of Environment, Hohai University, Nanjing, Jiangsu Province, 210098, China; College of Civil and Transportation Engineering, Hohai University, Nanjing, Jiangsu Province, 210098, China.
| | - Kaushik Venkiteshwaran
- Department of Civil, Coastal and Environmental Engineering, University of South Alabama, Mobile, Alabama, AL 36688, USA
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26
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Glarakis J, Remmas N, Azis K, Melidis P. Retrofitting a full-scale multistage landfill leachate treatment plant by introducing coagulation/flocculation/sedimentation and ultrafiltration process steps. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:326. [PMID: 36692638 DOI: 10.1007/s10661-023-10939-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Considering that landfilling still remains among the most commonly used methods for the confrontation of solid wastes, effective methods should be applied to treat the leachate generated, due to its recalcitrant nature. In this work, a full-scale system consisting of two SBRs operating in parallel (350 m3 each) and two activated carbon (AC) columns operating in series (3 m3 each) was retrofitted by introducing a coagulation/flocculation/sedimentation (C/F/S) unit of 7.8 m3 and an ultrafiltration (UF) membrane of 100 m2 to effectively treat landfill leachate. The raw leachate was characterized by high COD and NH4+-N concentration, i.e., 3095 ± 706 mg/L and 1054 ± 141 mg/L respectively, a BOD/COD ratio of 0.22, and high concentrations of certain heavy metals. Leachate processing in this retrofitted multistage treatment system resulted in total COD removal efficiency of 89.84%, with biological treatment, C/F, UF, and AC contributing 46.31%, 4.68%, 15.98%, and 22.87% to the overall organic content removal. The retrofitted scheme achieved an overall NH4+-N and TKN removal of 92.03% and 91.75% respectively, attributed mostly to the activity of an effective nitrifying community. Color number (CN) was reduced by 26.96%, 10.29%, 15.94%, and 5.39% after the activated sludge, the C/F, the UF, and the AC adsorption process respectively, corresponding to a 58.91% overall decrease. Regarding heavy metal removal, all elements examined, apart from Ni, i.e., effluent As, Cd, Co, Cr, Cu, Hg, Mg, Mn, and Pb, were below the legislative limits set by the national authorities for restricted or unrestricted irrigation. Lastly, total operating expenses (OPEX) were estimated as equal to 72,687 €/year or 6.64 €/m3.
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Affiliation(s)
- John Glarakis
- Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67132, Xanthi, Greece
| | - Nikolaos Remmas
- Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67132, Xanthi, Greece
| | - Konstantinos Azis
- Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67132, Xanthi, Greece
| | - Paraschos Melidis
- Laboratory of Wastewater Management and Treatment Technologies, Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67132, Xanthi, Greece.
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27
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Yaashikaa PR, Kumar PS, Nhung TC, Hemavathy RV, Jawahar MJ, Neshaanthini JP, Rangasamy G. A review on landfill system for municipal solid wastes: Insight into leachate, gas emissions, environmental and economic analysis. CHEMOSPHERE 2022; 309:136627. [PMID: 36181852 DOI: 10.1016/j.chemosphere.2022.136627] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/26/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
Landfill is one of the common processes for removing and disposing waste materials that comprises the final method of disposing municipal solid waste. Disposal of municipal solid waste through land filling has become an important environmental problem all over the world which results in environmental contamination and pollution. Microbes present in the land act on the dumped materials and decompose the organic content present. The leachate from landfill is rich in organic, inorganic and suspended particles which may cause threat to ecosystem. The pollutants from leachate may be heavy metals, organic and inorganic content and organic compounds. The geological properties of soil get altered when leachate migrates. The physical, chemical and biological properties of the dumped material are determined by the decomposition of substances and microbes acting onto it. Trace gas emission may occur due to volatilization of chemical substances, degradation of waste materials and conversion reactions. The concentration of gas released varies from region to region of dumping, covered and uncovered dumped materials. The current review recommends an engineered landfill design helpful for landfill gas generation which replaces the fossil fuel as a compressed natural gas or liquefied natural gas. The landfill area is separated into organic and inorganic cells to scope at the objective of energy generation and resource recovery. However, the impact of these released gaseous emissions has been analyzed completely.
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Affiliation(s)
- P R Yaashikaa
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - Ponnusamy Senthil Kumar
- Green Technology and Sustainable Development in Construction Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
| | - Tran Cam Nhung
- Faculty of Safety Engineering, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam
| | - R V Hemavathy
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - Marie Jyotsna Jawahar
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - J P Neshaanthini
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | - Gayathri Rangasamy
- University Centre for Research and Development & Department of Civil Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
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28
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Asaad AA, El-Hawary AM, Abbas MHH, Mohamed I, Abdelhafez AA, Bassouny MA. Reclamation of wastewater in wetlands using reed plants and biochar. Sci Rep 2022; 12:19516. [PMID: 36376384 PMCID: PMC9663436 DOI: 10.1038/s41598-022-24078-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
To cope with water crisis, wastewater reuse has been introduced as a potential source for irrigation. On the other hand, irrigation with wastewater may negatively affect the surroundings. In this study, reed plant (Phragmits australis) and its biochar were tested as low-cost treatments to enhance the efficiency of wastewater reclamation in wetlands within only 72 h. The investigated water was of low irrigation quality and exhibited high contents of BOD5 and fecal coliform. Moreover, this water contained high levels of soluble cations and anions; besides, being marginally contaminated with Cu, Mn and Cd. After 2 days in the sedimentation unit, wastewater was subjected to three reclamation treatments in parallel (each lasted for 24 h): (1) a "sand & gravel bed", (2) "reed plants grown on a sand & gravel bed" and (3) "biochar + a sand & gravel bed". The results showed that all treatments decreased BOD5, fecal coliform, total cations and anions, with superiority for the second and third treatments. The levels of the potentially toxic elements also decreased to values within the permissible levels. Although the aforementioned wastewater treatment processes upgraded the quality of this water, it remained in the poor grade. Biochar or reed plants grown on sand and gravel beds significantly improved wastewater quality to the medium quality grade, with superiority for biochar treatment. In conclusion, investigated treatments are guaranteed in wetlands for wastewater reclamation; yet, further protocols should be followed to achieve safe handling of this water and attain the sustainable goals.
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Affiliation(s)
- Amany A. Asaad
- grid.463259.f0000 0004 0483 3317Central Laboratory for Environmental Quality Monitoring, National Water Research Center, El-Qanater El-Khiria, Egypt
| | - Ahmed M. El-Hawary
- grid.463259.f0000 0004 0483 3317Drainage Research Institute, National Water Research Center, El-Qanater El-Khiria, Egypt
| | - Mohamed H. H. Abbas
- grid.411660.40000 0004 0621 2741Soil and Water Department, Faculty of Agriculture, Benha University, Benha, Egypt
| | - Ibrahim Mohamed
- grid.411660.40000 0004 0621 2741Soil and Water Department, Faculty of Agriculture, Benha University, Benha, Egypt
| | - Ahmed A. Abdelhafez
- grid.252487.e0000 0000 8632 679XDepartment of Soils and Water, Faculty of Agriculture, New Valley University, Kharga, Egypt ,grid.423564.20000 0001 2165 2866National Committee of Soil Sciences, Academy of Scientific Research and Technology, Cairo, Egypt
| | - Mohamed A. Bassouny
- grid.411660.40000 0004 0621 2741Soil and Water Department, Faculty of Agriculture, Benha University, Benha, Egypt
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29
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Jiang H, Li X, Zhang F, Wang Z, Ren S, Qiu J, Wang S, Peng Y. Advanced nitrogen removal from mature landfill leachate based on novel step-draining partial nitrification-denitrification and Anammox process: Significance of low volume exchange ratio. BIORESOURCE TECHNOLOGY 2022; 364:128025. [PMID: 36174894 DOI: 10.1016/j.biortech.2022.128025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
To save external carbon source dosage and simplify NH4+ to NO2- ratio control strategy, this study established a novel step-draining based partial nitrification-denitrification and Anammox (PND-AMX) system for advanced nitrogen removal from mature landfill leachate. Separation of partial nitrification and denitrification was realized based on step-draining, achieving 74.8 % nitrogen removal. 25 % was the optimal volume exchange ratio for synergistic removal of organics and nitrogen, allowing full use of carbon source. NH4+ to NO2- ratio was easily controlled by varying the volume ratio of the first and second effluent of PND reactor. Brocadia, Kuenenia and Jettenia collectively accounted for 13.61 % in AMX reactor, contributing 21.0 % of nitrogen removal. Nitrogen removal efficiency and nitrogen removal rate reached 98.3 ± 1.2 % and 3.07 ± 0.09 kgN/(m3∙d), respectively. Partial Anammox process based on step-draining was easier to realize and of practical significance for application in treatment of landfill leachate.
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Affiliation(s)
- Hao Jiang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Xiyao Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Fangzhai Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Zhong Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Shang Ren
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Jingang Qiu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Shuying Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
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30
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Wang S, Teng Z, Li Y, Chen F, Liu X, Liu S, He J, Wang W. A novel vertical dual-loop reactor for rapid start-up of simultaneous partial nitrification and anammox process in treating landfill leachate: Performances and mechanisms. BIORESOURCE TECHNOLOGY 2022; 364:127947. [PMID: 36100189 DOI: 10.1016/j.biortech.2022.127947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
A novel vertical dual-loop reactor (VDLR) was developed to start and conduct a single-stage partial nitritation (PN) and anammox (PN/A) process for treating landfill leachate. Results showed that the total nitrogen (TN) removal reached 1.54 kg N/m3·d in the VDLR. It exhibited excellent mixing uniformity and buffer performance, which can increase the nitrogen removal performance up to 42.1 % via the improvement of anammox granular sludge activity (a particle size of 0.5-1 mm). Mass balance and microbial analysis indicated that the VDLR achieved efficient TN removal via anammox (99.24 %) and AOB (Nitrosomonas and Ellin6067) and anAOB (Candidatus kuenenia) played a vital role in this process.
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Affiliation(s)
- Siqi Wang
- Qingyan Environmental Technology Co. Ltd, Shenzhen 518057, China; Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Zedong Teng
- Innovation Academy for Green Manufacture, Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yun Li
- Qingyan Environmental Technology Co. Ltd, Shenzhen 518057, China.
| | - Fuming Chen
- Qingyan Environmental Technology Co. Ltd, Shenzhen 518057, China
| | - Xu Liu
- Qingyan Environmental Technology Co. Ltd, Shenzhen 518057, China
| | - Shujie Liu
- Qingyan Environmental Technology Co. Ltd, Shenzhen 518057, China
| | - Juyuan He
- Qingyan Environmental Technology Co. Ltd, Shenzhen 518057, China
| | - Wei Wang
- School of Environment, Tsinghua University, Beijing 100084, China
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Yuan Y, Liu J, Gao B, Sillanpää M, Al-Farraj S. The effect of activated sludge treatment and catalytic ozonation on high concentration of ammonia nitrogen removal from landfill leachate. BIORESOURCE TECHNOLOGY 2022; 361:127668. [PMID: 35878770 DOI: 10.1016/j.biortech.2022.127668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/17/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
This study adopted the combination of activated sludge treatment and catalytic ozonation technology to efficiently remove the high concentration of ammonia nitrogen from landfill leachate. Through optimizing the parameters continuously, the COD, NH4+-N, UV254 and colority respectively descended to 417.75 ± 6.72 mg/L, 9.77 mg/L, 1.98 ± 0.04 and 40 times, and 3D fluorescence also reduced significantly within 14 days. Target genes of AOB-amoA, nxrA, napA, nirS and nosZ analysis indicated that ammonia-oxidizing bacteria, nitrated bacteria, and denitrifying bacteria played a key role on nitrogen removal, aerobic denitrifying bacteria was dominated especially. The nitrogen removal process was as follows: catalytic ozonation converted nitrogen-containing organic matter into NH4+-N, then NH4+-N was converted into NO2--N and NO3--N with the action of ammonia oxidation, nitrification and catalytic ozonation. Finally, the denitrification microorganisms transformed NO3--N or NO2--N to N2. Therefore, this coupled process realized the nitrogen removal effectively from landfill leachate.
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Affiliation(s)
- Yuchen Yuan
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Jiadong Liu
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Bo Gao
- Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Membrane Separation of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein 2028, South Africa; Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; Zhejiang Rongsheng Environmental Protection Paper Co. LTD, NO. 588 East Zhennan Road, Pinghu Economic Development Zone, Zhejiang 314213, China; Department of Civil Engineering, University Centre for Research & Development, Chandigarh University, Gharuan, Mohali, Punjab, India; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173212, Himachal Pradesh, India
| | - Saleh Al-Farraj
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Ilmasari D, Sahabudin E, Riyadi FA, Abdullah N, Yuzir A. Future trends and patterns in leachate biological treatment research from a bibliometric perspective. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115594. [PMID: 35759967 DOI: 10.1016/j.jenvman.2022.115594] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/10/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Leachate has become a great deal of concern due to its complex properties which are primarily caused by the high concentrations of organics and ammonia. Thus, proper leachate treatment is required prior to its discharge. Leachate can be treated in various ways, and biological treatment is one of the approaches. This treatment has been shown to be both effective and cost-efficient while offering the possibility of resource recovery in the form of bioenergy. In this study, the underlying patterns in publications related to leachate biological treatment were uncovered through bibliometric analysis. This study also lays the groundwork for a deeper understanding of the past, current, and future trends of the leachate biological treatment. Research publications from 1974 to 2021 were retrieved from the Scopus database, and it was identified that 2013 articles were published in the span of 47 years. From the analyzed publications, China played a leading role in publishing leachate biological treatment research articles as well as having the most productive institutions and authors. Meanwhile, the USA was found to be the most active country in initiating international collaborations with 33 countries. The research hotspots were also successfully identified using keyword co-occurrences analysis. Anaerobic digestion and constructed wetland were revealed to be the research hotspots. The critical role of biological treatment in removing nitrogen from leachate was also highlighted. Besides, numerous research gaps were identified in the application of aerobic granular sludge (AGS) for leachate treatment. This can be a potential area for research in the future. Finally, future research should be encouraged to focus on the use of sustainable treatment systems in which energy recovery in the form of biogases is promoted.
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Affiliation(s)
- Dhaneswara Ilmasari
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Eri Sahabudin
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Fatimah Azizah Riyadi
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Norhayati Abdullah
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia; UTM International, Aras 8 Menara Razak, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Ali Yuzir
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
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Singh A, Srivastava A, Saidulu D, Gupta AK. Advancements of sequencing batch reactor for industrial wastewater treatment: Major focus on modifications, critical operational parameters, and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115305. [PMID: 35642808 DOI: 10.1016/j.jenvman.2022.115305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/24/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Industrial wastewater discharge has increased manifolds over the last few decades. Efficient industrial wastewater treatment is mandatory to meet stringent discharge regulations. Biological treatment systems, such as the sequencing batch reactor (SBR) are generally employed for domestic wastewater treatment. However, low infrastructure and energy requirements, as well as low footprint, make SBR a prominent technique to treat industrial wastewater. In the present review, the feasibility of SBR to treat wastewater generated from industries, such as textile, pulp and paper, pharmaceutical, tannery, etc., has been discussed. The factors affecting the treatment efficacy of the SBR in terms of organics and nutrient removal have also been investigated. It has been observed that the SBR system is effective for industrial wastewater treatment as it is easy to operate, resistant to shock loads, and can retain high biomass concentrations. The modifications to the conventional SBR, such as sludge granulation, the addition of bio-film carriers, and the incorporation of adsorbents, salt-tolerant microbes, and coagulants have been discussed. Further, various novel combinations of SBR with the other advanced treatment technologies, such as Fenton, membrane-based process, and electrochemical process have shown enhanced removal of various conventional and recalcitrant pollutants. The current review also accentuates the sustainability aspects of SBR technology to treat industrial wastewater which may be beneficial for researchers and engineers working in this field.
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Affiliation(s)
- Adarsh Singh
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Ashish Srivastava
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Duduku Saidulu
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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Ilmasari D, Kamyab H, Yuzir A, Riyadi FA, Khademi T, Al-Qaim FF, Kirpichnikova I, Krishnan S. A Review of the Biological Treatment of Leachate: Available Technologies and Future Requirements for the Circular Economy Implementation. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Shin SG, Kim SI, Hwang S. Startup of Demo-Scale Anaerobic Digestion Plant Treating Food Waste Leachate: Process Instability and Recovery. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19116903. [PMID: 35682486 PMCID: PMC9180266 DOI: 10.3390/ijerph19116903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 02/05/2023]
Abstract
A demo-scale (600 m3 working volume) anaerobic digester treating food waste leachate was monitored during its startup period. The operation strategy was adjusted twice (i.e., three distinct phases) during the operation to recover the process from instability. During the first phase, the organic loading rate (OLR) > 2.7 kg chemical oxygen demand (COD)/m3∙day corresponded to volatile fatty acid (VFA) accumulation along with a decreasing pH, resulting in the drop in biogas yield to 0.43 ± 0.9 m3/kg CODin. During phase 2, fast recovery of this process was aimed at using a sequencing batch operation. One batch cycle (5 to 2 days) consisted of the combined drawing and feeding step (5 h), the reacting step (91 to 17 h), and the settling step (24 h). The duration of the reacting step was determined for each cycle such that (1) the biogas production ceased before the cycle end and (2) the residual VFA concentration was < 1 g/L. In total, 11 cycles were operated with a gradual increase in biogas yield to 0.55 m3/kg CODin with the absence of any sign of system disturbance. After phase 2, the digester was fed at the designed OLR of 4.1 ± 0.3 kg COD/m3∙day. The biogas yield was elevated to 0.58 ± 0.2 m3/kg CODin during phase 3 with the residual VFA concentration maintained at 2.2 ± 0.6 g/L. Methanogen populations, as determined by real-time PCR, did not change significantly throughout the period. These results imply that the adaptation of this process to the OLR of ca. 4 kg COD/m3∙day was not due to the increase in methanogen population but due to the elevation of its activity. Overall, this study suggests that the sequencing batch operation with adjustable cycle duration can be one successful recovery strategy for biogas plants under system instability.
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Affiliation(s)
- Seung Gu Shin
- Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongsang National University, 33 Dongjin-ro, Jinju 52828, Korea;
- Department of Energy System Engineering, Gyeongsang National University, 33 Dongjin-ro, Jinju 52828, Korea
| | - Su In Kim
- Division of Environmental Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Pohang 37673, Korea;
| | - Seokhwan Hwang
- Division of Environmental Science and Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Pohang 37673, Korea;
- Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Korea
- Correspondence:
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Abstract
METHs are drugs that enter wastewater through the feces and urine of users. Conventional wastewater treatment plants are not capable of removing this type of emerging contaminant, but, in recent years, techniques have been developed to abate drugs of abuse. The present investigation focused on obtaining the technique that keeps the best balance between the comparison criteria considered: efficiency; costs; development stage; and waste generation. That is why a bibliographic review was carried out in the scientific databases of the last eight years, concluding that the six most popular techniques are: SBR, Fenton reaction, mixed-flow bioreactor, ozonation, photocatalysis, and UV disinfection. Subsequently, the Saaty and Modified Saaty methods were applied, obtaining a polynomial equation containing the four comparison criteria for the evaluation of the techniques. It is concluded that the UV disinfection method is the one with the best relationship between the analyzed criteria, reaching a score of 0.8591/1, followed by the Fenton method with a score of 0.6925/1. This research work constitutes a practical and easy-to-use tool for decision-makers, since it allows finding an optimal treatment for the abatement of METHs.
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Wang X, Chen S, Ma Y, Zhang T, Zhao Y, He T, Huang H, Zhang S, Rong J, Shi C, Tang K, Liu Y, Kang Z. Continuous Homogeneous Catalytic Oxidation of C-H Bonds by Metal-Free Carbon Dots with a Poly(ascorbic acid) Structure. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26682-26689. [PMID: 35639877 DOI: 10.1021/acsami.2c03627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The activation of the C-H bond, a necessary step to get high-value-added compounds, is one of the most important issues in modern catalysis. Combining the advantages of both homogeneous and heterogeneous catalysis, a certain continuous homogeneous process should be one of the ideal routes for the catalytic activation of C-H bonds. Here, through machine learning (ML), we predicted and fabricated metal-free carbon dot (C-Dot) homogeneous catalysts for C-H bond oxidation. These C-Dots have an ascorbic acid unit based polymer-like structure with a polymerization degree in the range of 3-10. With C-Dots as the catalyst, three groups (aliphatic, aromatic, and cycloalkanes) of 10 hydrocarbon molecules were tested, proving its generality for the catalytic oxidation of the C-H bond. A typical example of cyclohexane that was selectively oxidized to adipic acid (AA) by using a circulation and phase-transfer process demonstrates its critical advantages, such as the continuous and large-scaled producing ability of the homogeneous catalysis process. The one-pass conversion efficiency of cyclohexane to AA reaches 77.49% with selectivity up to 84.24% in 4 h. The yield of 16.32% per hour is about 4 times over that of modern technology. Theoretical calculations suggested that the O2 activation on C-Dots plays a crucial role in determining the reaction rate of the entire catalytic oxidation process of cyclohexane.
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Affiliation(s)
- Xiao Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Shaoang Chen
- Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yurong Ma
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Tianyang Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Yajie Zhao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Tiwei He
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Hui Huang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Shitong Zhang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Jiangsu 215123, China
| | - Junfeng Rong
- Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Chunfeng Shi
- Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
| | - Kangjian Tang
- Innovation Center for Chemical Science, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yang Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
- Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa 999078, Macao, China
- Institute of Advanced Materials, Northeast Normal University, Changchun 130024, China
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Benguit A, Tiwari B, Drogui P, Landry D. Tertiary treatment of a mixture of composting and landfill leachates using electrochemical processes. CHEMOSPHERE 2022; 292:133379. [PMID: 34958788 DOI: 10.1016/j.chemosphere.2021.133379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/07/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
The study investigated the treatment efficiency of coupled electrocoagulation (EC) and electrooxidation (EO) processes for landfill leachate treatment in batch and continuous mode. The EC process (iron anode and graphite cathode) at 18.2 mA/cm2 for 2.5 min resulted in COD, turbidity, total phosphorus, total coliforms and fecal coliforms removal of 58.1, 72.9, 98.5, 97.9, and 97.2% respectively. Under the same operating conditions, the coupled EC/EO (Ti-Pt anode, bipolar iron electrode, and graphite cathode) processes showed that the COD, turbidity, total phosphorus, total coliforms, and fecal coliforms removal of 56.5%, 78.3%, 96.3%, 97.2% and fecal coliforms 72.7%, respectively. The energy costs associated with the EC and EC/EO were 0.11 and 0.25 $/m3, respectively. Compared to the batch configuration, the continuous configuration of EC resulted in similar processing performance. However, the EC/EO process resulted in the production of chlorates, perchlorates, and trihalomethanes as by-products. Moreover, the continuous process slightly increases the pH and ammonia concentration of the leachate and also resulted in the metallic sludge production with an average dryness of 4.2%. The toxicity tests determined that the treated effluent was not toxic to Rainbow trout and Daphnia.
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Affiliation(s)
- Alae Benguit
- Institut National de la Recherche Scientifique (INRS-Eau Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1K 9A9, Canada
| | - Bhagyashree Tiwari
- Institut National de la Recherche Scientifique (INRS-Eau Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1K 9A9, Canada
| | - Patrick Drogui
- Institut National de la Recherche Scientifique (INRS-Eau Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec, QC, G1K 9A9, Canada.
| | - Dany Landry
- Englobe Company, Englobe Corp., 505 Boul. de Parc Technologique, Québec, QC, G1P 4S7, Canada
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Essien JP, Ikpe DI, Inam ED, Okon AO, Ebong GA, Benson NU. Occurrence and spatial distribution of heavy metals in landfill leachates and impacted freshwater ecosystem: An environmental and human health threat. PLoS One 2022; 17:e0263279. [PMID: 35113945 PMCID: PMC8812908 DOI: 10.1371/journal.pone.0263279] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 01/14/2022] [Indexed: 11/19/2022] Open
Abstract
Municipal landfill leachates are a source of toxic heavy metals that have been shown to have a detrimental effect on human health and the environment. This study aimed to assess heavy metal contamination in leachates, surface water, and sediments from non-sanitary landfills in Uyo, Nigeria, and to identify potential health and environmental effects of leachate contamination. Over the wet and dry seasons, surface water and sediment samples were collected from an impacted freshwater ecosystem, and leachates samples from six monitoring wells. Elemental analyses of samples were conducted following standard analytical procedures and methods. The results indicated that leachate, surface water, and sediment samples all had elevated levels of heavy metals, implying a significant impact from landfills. Pollution indices such as the potential ecological risk index (PERI), pollution load index (PLI), degree of contamination (Cd), modified degree of contamination (mCd), enrichment factor (EF), geoaccumulation index (Igeo), and Nemerov pollution index (NPI) were used to assess the ecological impacts of landfill leachates. The following values were derived: PERI (29.09), PLI (1.96E-07), Cd (0.13), mCd (0.16), EF (0.97-1.79E-03), Igeo (0), and NPI (0.74). Pollution indicators suggested that the sediment samples were low to moderately polluted by chemical contaminants from the non-sanitary landfills, and may pose negative risks due to bioaccumulation. Human health risks were also assessed using standard risk models. For adults, children, and kids, the incremental lifetime cancer rate (ILCR) values were within the acceptable range of 1.00E-06-1.00E-04. The lifetime carcinogenicity risks associated with oral ingestion exposure to heavy metals were 9.09E-05, 1.21E-05, and 3.60 E-05 for kids, adults, and children, respectively. The mean cumulative risk values for dermal exposures were 3.24E-07, 1.89E-06, and 1.17E-05 for adults, children, and kids, respectively. These findings emphasized the risks of human and biota exposure to contaminants from landfills.
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Affiliation(s)
| | - Donald I. Ikpe
- Department of Science Technology, Akwa Ibom State Polytechnic, Ikot Ekpene, Nigeria
| | - Edu D. Inam
- Department of Chemistry, University of Uyo, Uyo, Nigeria
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Pisharody L, Gopinath A, Malhotra M, Nidheesh PV, Kumar MS. Occurrence of organic micropollutants in municipal landfill leachate and its effective treatment by advanced oxidation processes. CHEMOSPHERE 2022; 287:132216. [PMID: 34517234 DOI: 10.1016/j.chemosphere.2021.132216] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/25/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Landfilling is the most prominently adopted disposal technique for managing municipal solid waste across the globe. However, the main drawback associated with this method is the generation of leachate from the landfill site. Leachate, a highly concentrated liquid consisting of both organic and inorganic components arises environmental issues as it contaminates the nearby aquifers. Landfill leachate treatment by conventional methods is not preferred as the treatment methods are not much effective to remove these pollutants. Advanced oxidation processes (AOPs) based on both hydroxyl and sulfate radicals could be a promising method to remove the micropollutants completely or convert them to non-toxic compounds. The current review focuses on the occurrence of micropollutants in landfill leachate, their detection methods and removal from landfill leachate using AOPs. Pharmaceuticals and personal care products occur in the range of 10-1 to more than 100 μg L-1 whereas phthalates were found below the detectable limit to 384 μg L-1, pesticides in the order of 10-1 μg L-1 and polyaromatic hydrocarbons occur in concentration from 10-2 to 114.7 μg L-1. Solid-phase extraction is the most preferred method for extracting micropollutants from leachate and liquid chromatography (LC) - mass spectrophotometer (MS) for detecting the micropollutants. Limited studies have been focused on AOPs as a potential method for the degradation of micropollutants in landfill leachate. The potential of Fenton based techniques, electrochemical AOPs and ozonation are investigated for the removal of micropollutants from leachate whereas the applicability of photocatalysis for the removal of a wide variety of micropollutants from leachate needs in-depth studies.
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Affiliation(s)
- Lakshmi Pisharody
- The Zuckerberg Institute of Water Research, Ben-Gurion University, Israel
| | - Ashitha Gopinath
- Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India
| | - Milan Malhotra
- Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - P V Nidheesh
- Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India.
| | - M Suresh Kumar
- Environmental Impact and Sustainability Division, CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, India
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Li X, Tao RJ, Tian MJ, Yuan Y, Huang Y, Li BL. Recovery and dormancy of nitrogen removal characteristics in the pilot-scale denitrification-partial nitrification-Anammox process for landfill leachate treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113711. [PMID: 34509812 DOI: 10.1016/j.jenvman.2021.113711] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/15/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
The pilot-scale partial nitrification-anaerobic ammonia oxidation (PN-Anammox) process for landfill leachate treatment has been running stably for 2 years. The degradation characteristics of nitrogen removal performance of PN-Anammox in this system were discussed during shutdown, and different recovery strategies were analyzed from the perspective of economy and easy implementation. The results showed that during the 166 d dormancy period, the decrease in Anammox bacteria activity occurred earlier than that of Anammox bacteria, and both tended to slow down after 128 d. The recovery strategy of simulated wastewater was the fastest, followed by the pretreated landfill leachate recovery strategy with inoculation of some corresponding functional sludges, while the worst strategy was the direct pretreated landfill leachate recovery strategy. The recovery start-up of the pilot-scale PN-Anammox process further showed that microbial activities were difficult to recover simultaneously during operation using raw wastewater directly due to the presence of high NH4+-N levels and the coupling process, which easily led to the accumulation of NH4+-N or NO2-N, thereby inhibiting microbial activity. The addition of some functional bacteria was more conducive to the rapid recovery of microbial activity. This study provides a new strategy for the rapid recovery of microbial activity for the engineering application of the PN-Anammox process.
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Affiliation(s)
- Xiang Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou, 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Ren-Jie Tao
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou, 215009, China
| | - Meng-Jia Tian
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou, 215009, China
| | - Yan Yuan
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou, 215009, China
| | - Yong Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou, 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Bo-Lin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
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42
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Kim JH, Jung S, Kim JO, Jeon YJ, Kwon EE. Valorization of carbon dioxide and waste (Derived from the site of Eutrophication) into syngas using a catalytic thermo-chemical platform. BIORESOURCE TECHNOLOGY 2021; 341:125858. [PMID: 34523588 DOI: 10.1016/j.biortech.2021.125858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Global warming increases a chance of eutrophication, and such fact offers that unhygienic organic waste materials (OWMs) in water must be treated. Hence, this study laid emphasis on the thermal-chemical (pyrolysis) process to establish a rapid valorization platform for OWMs. Indeed, OWMs were collected from the eutrophication site, and OWMs were mainly comprised of lignocellulosic biomass, microalgae (cyanobacteria) and the diverse types of bacteria (commonly observed from livestock waste). In an attempt to offer more sustainable valorization route for OWMs, CO2 was used as a raw material in pyrolysis process. From the CO2-assisted pyrolysis, the conversion of CO2 and OWMs into gaseous fuel (CO) was observed. A cheap Ni-based catalyst was used in pyrolysis of OWMs as a strategic practice to promote conversion of CO2 into CO. Indeed, syngas production (38 %) was enhanced from catalytic pyrolysis over Ni/SiO2 under CO2 condition as compared to inert condition (N2).
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Affiliation(s)
- Jung-Hun Kim
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea
| | - Sungyup Jung
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea
| | - Jong-Oh Kim
- Department of Microbiology, Pukyong National University, Busan 48513, Republic of Korea; School of Marine and Fisheries Life Science, Pukyong National University, Busan 48513, Republic of Korea
| | - Young Jae Jeon
- Department of Microbiology, Pukyong National University, Busan 48513, Republic of Korea; School of Marine and Fisheries Life Science, Pukyong National University, Busan 48513, Republic of Korea.
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea.
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43
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Lindamulla LMLKB, Jegatheesan V, Jinadasa KBSN, Nanayakkara KGN, Othman MZ. Integrated mathematical model to simulate the performance of a membrane bioreactor. CHEMOSPHERE 2021; 284:131319. [PMID: 34217927 DOI: 10.1016/j.chemosphere.2021.131319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/27/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Membrane bioreactor technology includes the integration of biological wastewater treatment and physical separation by membrane filtration. When analyzing the system performance, efficiency of biological processes, physical separation and membrane fouling must be taken into consideration. Over the years, mathematical modelling of wastewater treatment has evolved and is being used extensively to optimize the performance of treatment systems. A Number of attempts have been made towards the development of mathematical models for membrane bioreactors and most of these models have not considered the effect of soluble microbial products on membrane fouling. Also the effect of periodic membrane cleaning was neglected. In this study, an integrated mathematical model was developed for the membrane bioreactor. A biological model based on activated sludge processes (extended with biopolymer kinetics) and a physical model with cake layer kinetics and membrane fouling have been combined. In order to overcome the drawbacks of previous attempts of modelling, the influence of soluble microbial products and extracellular polymeric substances are considered in the model integration. Further, the physical processes of the sludge removal and membrane cleaning which have strong influence on membrane fouling are considered in the model. "AQUASIM", a computer program for the identification and simulation of aquatic systems, was used for solving the processes. Calibrated and validated model enables the prediction of the system performance and membrane fouling under different operating conditions.
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Affiliation(s)
- L M L K B Lindamulla
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, 3001, Australia; Department of Civil Engineering, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - V Jegatheesan
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, 3001, Australia.
| | - K B S N Jinadasa
- Department of Civil Engineering, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - K G N Nanayakkara
- Department of Civil Engineering, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - M Z Othman
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, 3001, Australia
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44
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Jagaba AH, Kutty SRM, Hayder G, Baloo L, Noor A, Yaro NSA, Saeed AAH, Lawal IM, Birniwa AH, Usman AK. A Systematic Literature Review on Waste-to-Resource Potential of Palm Oil Clinker for Sustainable Engineering and Environmental Applications. MATERIALS 2021; 14:ma14164456. [PMID: 34442978 PMCID: PMC8397981 DOI: 10.3390/ma14164456] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 01/16/2023]
Abstract
Several agro-waste materials have been utilized for sustainable engineering and environmental application over the past decades, showing different degrees of effectiveness. However, information concerning the wider use of palm oil clinker (POC) and its performance is still lacking. Therefore, as a solid waste byproduct produced in one of the oil palm processing stages, generating a huge quantity of waste mostly dumped into the landfill, the waste-to-resource potential of POC should be thoroughly discussed in a review. Thus, this paper provides a systematic review of the current research articles on the several advances made from 2005 to 2021 regarding palm oil clinker physical properties and performances, with a particular emphasis on their commitments to cost savings during environmental and engineering applications. The review begins by identifying the potential of POC application in conventional and geopolymer structural elements such as beams, slabs, and columns made of concrete, mortar, or paste for coarse aggregates, sand, and cement replacement. Aspects such as performance of POC in wastewater treatment processes, fine aggregate and cement replacement in asphaltic and bituminous mixtures during highway construction, a bio-filler in coatings for steel manufacturing processes, and a catalyst during energy generation are also discussed. This review further describes the effectiveness of POC in soil stabilization and the effect of POC pretreatment for performance enhancement. The present review can inspire researchers to find research gaps that will aid the sustainable use of agroindustry wastes. The fundamental knowledge contained in this review can also serve as a wake-up call for researchers that will motivate them to explore the high potential of utilizing POC for greater environmental benefits associated with less cost when compared with conventional materials.
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Affiliation(s)
- Ahmad Hussaini Jagaba
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia; (S.R.M.K.); (L.B.); (A.N.); (N.S.A.Y.)
- Department of Civil Engineering, Abubakar Tafawa Balewa University, Bauchi 740272, Nigeria;
- Correspondence: (A.H.J.); (G.H.)
| | - Shamsul Rahman Mohamed Kutty
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia; (S.R.M.K.); (L.B.); (A.N.); (N.S.A.Y.)
| | - Gasim Hayder
- Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), Kajang 43000, Selangor Darul Ehsan, Malaysia
- Correspondence: (A.H.J.); (G.H.)
| | - Lavania Baloo
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia; (S.R.M.K.); (L.B.); (A.N.); (N.S.A.Y.)
| | - Azmatullah Noor
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia; (S.R.M.K.); (L.B.); (A.N.); (N.S.A.Y.)
| | - Nura Shehu Aliyu Yaro
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia; (S.R.M.K.); (L.B.); (A.N.); (N.S.A.Y.)
- Department of Civil Engineering, Ahmadu Bello University, Zaria 810107, Nigeria
| | - Anwar Ameen Hezam Saeed
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia;
| | - Ibrahim Mohammed Lawal
- Department of Civil Engineering, Abubakar Tafawa Balewa University, Bauchi 740272, Nigeria;
- Department of Civil and Environmental Engineering, University of Strathclyde, Glasgow G1 1XJ, UK
| | | | - Abdullahi Kilaco Usman
- Civil Engineering Department, University of Hafr Al-Batin, Hafr Al-Batin 31991, Saudi Arabia;
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Jiang H, Yang P, Wang Z, Ren S, Qiu J, Liang H, Peng Y, Li X, Zhang Q. Efficient and advanced nitrogen removal from mature landfill leachate via combining nitritation and denitritation with Anammox in a single sequencing batch biofilm reactor. BIORESOURCE TECHNOLOGY 2021; 333:125138. [PMID: 33895670 DOI: 10.1016/j.biortech.2021.125138] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 06/12/2023]
Abstract
A novel combined partial nitrification-Anammox and partial denitrification-Anammox (PnA/PdA) single sequencing batch biofilm reactor (SBBR) was established to realize efficient and advanced nitrogen removal from mature landfill leachate with low biodegradability. Nitrogen removal rate and nitrogen removal efficiency were increased to 2.83 ± 0.06 kgN/(m3∙d) and 98.6 ± 0.2% by stepwise increase of dissolved oxygen (DO, from 0.5 to 3.5 mg/L) and continuous carbon source feeding. Comparable activities of ammonia oxidation bacteria and Anammox bacteria were realized during aerobic period. More organic carbon was redirected from complete denitrification to partial denitrification during anoxic period. The main pathway PnA jointly synergized with PdA, which contributed to 76.04% and 19.44% nitrogen removal, respectively. Nitrosomonas, Thauera, and Kuenenia dominated in floc sludge (0.78%, 5.38%, and 1.14%, respectively) and biofilm (0.34%, 5.18%, and 0.98%, respectively). Overall, this study provides new insight into the high-efficiency treatment of landfill leachate at full-scale landfill sites.
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Affiliation(s)
- Hao Jiang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Pei Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China; Engineering Technology Research Center of Beijing MSW Comprehensive Treatment and Utilization, Environmental Engineering Technology Co, Ltd., Beijing, PR China
| | - Zhong Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Shang Ren
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Jingang Qiu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Haoran Liang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
| | - Xiyao Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Qiong Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
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Modeling and Optimization of Biochar Based Adsorbent Derived from Kenaf Using Response Surface Methodology on Adsorption of Cd2+. WATER 2021. [DOI: 10.3390/w13070999] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cadmium is one of the most hazardous metals in the environment, even when present at very low concentrations. This study reports the systematic development of Kenaf fiber biochar as an adsorbent for the removal of cadmium (Cd) (II) ions from water. The adsorbent development was aided by an optimization tool. Activated biochar was prepared using the physicochemical activation method, consisting of pre-impregnation with NaOH and nitrogen (N2) pyrolysis. The influence of the preparation parameters—namely, chemical impregnation (NaOH: KF), pyrolysis temperature, and pyrolysis time on biochar yield, removal rate, and the adsorption capacity of Cd (II) ions—was investigated. From the experimental data, some quadratic correlation models were developed according to the central composite design. All models demonstrated a good fit with the experimental data. The experimental results revealed that the pyrolysis temperature and heating time were the main factors that affected the yield of biochar and had a positive effect on the Cd (II) ions’ removal rate and adsorption capacity. The impregnation ratio also showed a positive effect on the specific surface area of the biochar, removal rate, and adsorption capacity of cadmium, with a negligible effect on the biochar yield. The optimal biochar-based adsorbent was obtained under the following conditions: 550 °C of pyrolysis temperature, 180 min of heating time, and a 1:1 NaOH impregnation ratio. The optimum adsorbent showed 28.60% biochar yield, 69.82% Cd (II) ions removal, 23.48 mg/g of adsorption capacity, and 160.44 m2/g of biochar-specific area.
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