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Shokri S, Bonakdarpour B, Abdollahzadeh Sharghi E. How high salt shock affects performance and membrane fouling characteristics of a halophilic membrane bioreactor used for treating hypersaline wastewater. CHEMOSPHERE 2024; 354:141716. [PMID: 38490610 DOI: 10.1016/j.chemosphere.2024.141716] [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: 11/05/2023] [Revised: 03/04/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
In the present study, the effect of short-term salt shocks (13% and 20%) on the performance of a halophilic MBR bioreactor used to treat a hypersaline (5% salt) synthetic wastewater was considered. 13% and 20% salt shocks resulted in a transient and permanent decrease in chemical oxygen demand removal efficiency, respectively which could be correlated with soluble microbial products (SMP) concentration and specific oxygen uptake rate values of the halophilic population. DNA leakage tests suggested that both 13% and 20% short-term salt shocks resulted in some cell structural damage. During both 13% and 20% salt shocks mixed liquor SMP, extracellular polymeric substances (EPS), zeta potential and endogenous respiration increased while relative hydrophobicity, EPSp/EPSc and exogenous respiration decreased; in both cases, however, the pre-shock values for these parameters were restored after the removal of the salt shock. 13% salt shock resulted in a transient increase in the membrane fouling rate and a permanent rise in total membrane resistance (Rt). On the other hand, both membrane fouling rate and Rt increased during 20% salt shock. Membrane fouling rate initially reduced after the 20% salt shock removal but after 5 days a "TMP jump" occurred. The latter was caused by the higher steady state SMPc and SMPp concentrations after removal of 20% salt shock compared to pre-shock values. This might have either resulted in a decrease in critical flux or an increase in local flux above critical flux in some parts of the membrane. The contribution of cake layer resistance to overall membrane resistance increased after the 13% and 20% salt shocks. The findings of the present study reveal the robustness of halophilic MBRs against salt shocks in the treatment of hypersaline wastewater. However, in cases of very high salt shocks, appropriate membrane fouling reduction strategies should be carried out during its operation.
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Affiliation(s)
- Sousan Shokri
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Babak Bonakdarpour
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran.
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Tan B, He Z, Fang Y, Zhu L. Removal of organic pollutants in shale gas fracturing flowback and produced water: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 883:163478. [PMID: 37062313 DOI: 10.1016/j.scitotenv.2023.163478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/28/2023] [Accepted: 04/09/2023] [Indexed: 06/03/2023]
Abstract
Shale gas has been developed as an alternative to conventional energy worldwide, resulting in a large amount of shale gas fracturing flowback and produced water (FPW). Previous studies focus on total dissolved solids reduction using membrane desalination. However, there is a lack of efficient and stable techniques to remove organic pollutants, resulting in severe membrane fouling in downstream processes. This review focuses on the concentration and chemical composition of organic matter in shale gas FPW in China, as well as the hazards of organic pollutants. Organic removal techniques, including advanced oxidation processes, coagulation, sorption, microbial degradation, and membrane treatment are systematically reviewed. In particular, the influences of high salt on each technique are highlighted. Finally, different treatment techniques are evaluated in terms of energy consumption, cost, and organic removal efficiency. It is concluded that integrated coagulation-sorption-Fenton-membrane filtration represents a promising treatment process for FPW. This review provides valuable information for the feasible design, practical operation, and optimization of FPW treatment.
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Affiliation(s)
- Bin Tan
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Hangzhou Shangtuo Environmental Technology Co., Ltd, Hangzhou 311121, China
| | - Zhengming He
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
| | - Yuchun Fang
- Hangzhou Shangtuo Environmental Technology Co., Ltd, Hangzhou 311121, China
| | - Lizhong Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang 310058, China.
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Liu X, Zhang H, Zhang X, Yang Y, Yang C, Zhao P, Dong Y. Chloride removal from flue gas desulfurization wastewater through Friedel's salt precipitation method: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160906. [PMID: 36521621 DOI: 10.1016/j.scitotenv.2022.160906] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/02/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
As a high efficiency method for chloride removal, Friedel's salt precipitation (FSP) method has attracted much attention in zero liquid discharge (ZLD) of flue gas desulfurization (FGD) wastewater. This review provides comprehensive knowledge of FSP method for chloride removal through analysis of the evolution, reaction mechanisms and influential factors, and describes the recent research progress. FSP method is a cost-efficient technology to remove chloride from saline wastewater by adding lime and aluminate. Chloride ions react with the precipitants by adsorption or/and ion exchange to form Friedel's salt, which is affected by the reaction conditions including reaction time, temperature, interferential ions, etc. The effluent of this process can be reused as the makeup water of desulfurization tower, and the dechloridation precipitates can be reclaimed as adsorption materials and sludge conditioners. That can not only offset a fraction of the treatment cost, but also avoid secondary pollution, so ZLD of FGD wastewater can be achieved. This paper summarizes the deficiencies and potential improvement measures of FSP method. We believe this technology is a promising way to achieve ZLD of FGD wastewater and other wastewater containing chloride, and expect FSP method would become more mature and be widely applied in hypersaline wastewater treatment in the foreseeable future.
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Affiliation(s)
- Xiao Liu
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China
| | - Hao Zhang
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China
| | - Xiaoyang Zhang
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China
| | - Yanchun Yang
- Guoneng (Shandong) Energy & Environment Co. Ltd., Jinan 250012, Shandong, China
| | - Chunzhen Yang
- Guoneng (Shandong) Energy & Environment Co. Ltd., Jinan 250012, Shandong, China
| | - Pei Zhao
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China.
| | - Yong Dong
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China.
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Dai H, Zhang H, Sun Y, Abbasi HN, Guo Z, Chen L, Chen Y, Wang X, Zhang S. An integrated process for struvite recovery and nutrient removal from ship domestic sewage. WATER RESEARCH 2023; 228:119381. [PMID: 36434973 DOI: 10.1016/j.watres.2022.119381] [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: 07/13/2022] [Revised: 11/04/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Marine pollution caused by the untreated and substandard discharge of ship domestic sewage has received widespread attention. A novel integrated process for struvite recovery and nutrient removal from ship domestic sewage (SRNR-SDS) based on seawater magnesium source was developed in this study. Removal efficiencies of the total nitrogen (TN) and total phosphorus (TP) for the activated sludge unit in SRNR-SDS process were approximately 67.61% and 41.35%, respectively, under the salinity of 7.85 g/L. The coupling-induced struvite crystallization unit significantly improved the removal efficiency of TN and TP, and the scanning electron microscopy and X-ray diffraction demonstrated that magnesium ammonium phosphate (MAP) crystals were successfully formed on the surface of zeolite. The SRNR-SDS process had an ideal performance for pollutant removal and MAP recovery under the optimal hydraulic retention time of 20 h. The effluent concentrations of COD, NH4+-N, TN and TP in SRNR-SDS process were approximately 34.73 mg/L, 4.31 mg/L, 10.07 mg/L and 0.23 mg/L, respectively, which meet the Chinese and international ship sewage discharge standards. SRNR-SDS process has obvious environmental, social and economic benefits, which could save 6.20%∼57.14% of the operation cost of ship domestic sewage treatment via MAP recovery. The results could provide theoretical and technical support for the development and application of ship sewage treatment process with the functions of pollutant removal and resource recovery.
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Affiliation(s)
- Hongliang Dai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China; Jiangxi Jindalai Environmental Protection Co., Ltd, Nanchang 330100, China; School of Environmental and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Haoxi Zhang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Yang Sun
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Haq Nawaz Abbasi
- Department of Environmental Science, Science and Technology, Federal Urdu University of Arts, Karachi, Pakistan
| | - Zechong Guo
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China; School of Environmental and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Lizhuang Chen
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China
| | - Yong Chen
- School of Environmental and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Xingang Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212018, China.
| | - Shuai Zhang
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
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Goonesekera EM, Tsapekos P, Angelidaki I, Valverde-Pérez B. Impact of recovered phosphorus supply on methanotrophic cultivation and microbial protein production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 322:115820. [PMID: 36058074 DOI: 10.1016/j.jenvman.2022.115820] [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: 03/23/2022] [Revised: 05/13/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Microbial protein is a promising dietary supplement alternative to traditional sources, being methane oxidising bacteria (MOB) an attractive option to produce it. Though current production processes rely on fossil resources, there is an increasing trend of using recovered residual nutrient streams, with most research focusing on nitrogen and methane, paying little attention to phosphorus. Struvite and precipitated calcium phosphate (PCP) were evaluated as potential residual P sources for microbial protein production after dissolved them with strong acids. MOB growth was studied in batch experiments. Yields ranged from 0.21 to 0.29 g CDW g CH4-1. Crude protein contents above 50% of dried weight were achieved, and neither the P nor the N source affected the amino acid profile significantly. The highest protein content (75%) was observed when using struvite as nutrient source, but also yielded cadmium and lead accumulation above limits set in legislation.
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Affiliation(s)
- Estelle Maria Goonesekera
- Department of Environmental and Resource Engineering, Bygningstorvet 115, Technical University of Denmark; DTU, 2800, Lyngby, Denmark
| | - Panagiotis Tsapekos
- Department of Chemical Engineering, Søltofts Plads 228A, Technical University of Denmark, DTU, 2800, Lyngby, Denmark
| | - Irini Angelidaki
- Department of Chemical Engineering, Søltofts Plads 228A, Technical University of Denmark, DTU, 2800, Lyngby, Denmark
| | - Borja Valverde-Pérez
- Department of Environmental and Resource Engineering, Bygningstorvet 115, Technical University of Denmark; DTU, 2800, Lyngby, Denmark.
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Cao TND, Bui XT, Le LT, Dang BT, Tran DPH, Vo TKQ, Tran HT, Nguyen TB, Mukhtar H, Pan SY, Varjani S, Ngo HH, Vo TDH. An overview of deploying membrane bioreactors in saline wastewater treatment from perspectives of microbial and treatment performance. BIORESOURCE TECHNOLOGY 2022; 363:127831. [PMID: 36029979 DOI: 10.1016/j.biortech.2022.127831] [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: 07/07/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
The discharged saline wastewater has severely influenced the aquatic environment as the treatment performance of many wastewater treatment techniques is limited. In addition, the sources of saline wastewater are also plentiful from agricultural and various industrial fields such as food processing, tannery, pharmaceutical, etc. Although high salinity levels negatively impact the performance of both physicochemical and biological processes, membrane bioreactor (MBR) processes are considered as a potential technology to treat saline wastewater under different salinity levels depending on the adaption of the microbial community. Therefore, this study aims to systematically review the application of MBR widely used in the saline wastewater treatment from the perspectives of microbial structure and treatment efficiencies. At last, the concept of carbon dioxide capture and storage will be proposed for the MBR-treating saline wastewater technologies and considered toward the circular economy with the target of zero emission.
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Affiliation(s)
- Thanh Ngoc-Dan Cao
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan ROC
| | - Xuan-Thanh Bui
- Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, district 10, Ho Chi Minh City 700000, Viet Nam; Vietnam National University Ho Chi Minh (VNU-HCM), Linh Trung ward, Ho Chi Minh City 700000, Viet Nam.
| | - Linh-Thy Le
- Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, district 10, Ho Chi Minh City 700000, Viet Nam; Faculty of Public Health, University of Medicine and Pharmacy at Ho Chi Minh City (UMP), Ward 11, District 5, Ho Chi Minh City 72714, Viet Nam
| | - Bao-Trong Dang
- Vietnam National University Ho Chi Minh (VNU-HCM), Linh Trung ward, Ho Chi Minh City 700000, Viet Nam; Faculty of Chemical Engineering, Ho Chi Minh University of Technology (HCMUT), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City 700000, Viet Nam
| | - Duyen Phuc-Hanh Tran
- Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, district 10, Ho Chi Minh City 700000, Viet Nam; Vietnam National University Ho Chi Minh (VNU-HCM), Linh Trung ward, Ho Chi Minh City 700000, Viet Nam
| | - Thi-Kim-Quyen Vo
- Faculty of Biology and Environment, Ho Chi Minh City University of Food Industry (HUFI), 140 Le Trong Tan street, Tay Thanh ward, Tan Phu district, Ho Chi Minh City 700000, Viet Nam
| | - Huu-Tuan Tran
- Department of Civil, Environmental & Architectural Engineering, The University of Kansas, Lawrence, KS 66045, United States
| | - Thanh-Binh Nguyen
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Hussnain Mukhtar
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan ROC
| | - Shu-Yuan Pan
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan ROC
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar 382010, Gujarat, India
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Thi-Dieu-Hien Vo
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
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A Universal Biofilm Reactor Sensor for the Determination of Biochemical Oxygen Demand of Different Water Areas. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27155046. [PMID: 35956996 PMCID: PMC9370119 DOI: 10.3390/molecules27155046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022]
Abstract
In this study, we developed a simple strategy to prepare a biofilm reactor (BFR) sensor for the universal biochemical oxygen demand (BOD) determination. The microorganisms in fresh water were domesticated by artificial seawater with different salinity gradients successively to prepare the BFR sensor. The prepared BFR sensor exhibits an efficient ability to degrade a variety of organic substances. The linear range of BOD determination by the BFR sensor is 1.0–10.0 mg/L−1 with a correlation coefficient of 0.9951. The detection limit is 0.30 mg/L according to three times of signal-to-noise ratio. What is more, the BFR sensor displayed excellent performances for the BOD determination of different water samples, including both fresh water and seawater. The 16S-rRNA gene sequencing technology was used to analyze the microbial species before and after the domestication. The results show that it is a general approach for the rapid BOD determination in different water samples.
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Qian Y, Han W, Zhou F, Ji B, Zhang H, Zhang K. Effects of Pressurized Aeration on the Biodegradation of Short-Chain Chlorinated Paraffins by Escherichia coli Strain 2. MEMBRANES 2022; 12:membranes12060634. [PMID: 35736341 PMCID: PMC9227625 DOI: 10.3390/membranes12060634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 11/16/2022]
Abstract
Short-chain chlorinated paraffins (SCCPs) were defined as persistent organic pollutants in 2017, and they can migrate and transform in the environment, accumulate in organisms, and amplify through the food chain. Although they pose a serious threat to environmental safety and human health, there are few papers on their removal. The current SCCP removal methods are expensive, require severe operating conditions, involve time-consuming biological treatment, and have poor removal specificities. Therefore, it is important to seek efficient methods to remove SCCPs. In this paper, a pressurized reactor was introduced, and the removal performance of SCCPs by Escherichia coli strain 2 was investigated. The results indicated that moderate pure oxygen pressurization promoted bacterial growth, but when it exceeded 0.15 MPa, the bacterial growth was severely inhibited. When the concentration of SCCPs was 20 mg/L, the removal rate of SCCPs was 85.61% under 0.15 MPa pure oxygen pressurization for 7 days, which was 25% higher than at atmospheric pressure (68.83%). In contrast, the removal rate was only 69.28% under 0.15 MPa air pressure. As the pressure continued to increase, the removal rate of SCCPs decreased significantly. The total amount of extracellular polymeric substances (EPS) increased significantly upon increasing the pressure, and the amount of tightly bound EPS (TB-EPS) was higher than that of loosely bound EPS (LB-EPS). The pressure mainly promoted the secretion of proteins in LB-EPS. Furthermore, an appropriate pure oxygen pressure of 0.15 MPa improved the dehydrogenase activity. The gas chromatography–mass spectrometry (GC–MS) results indicated that the degradation pathway possibly involved the cleavage of the C–Cl bond in SCCPs, which produced Cl−, followed by C–C bond breaking. This process degraded long-chain alkanes into short-chain alkanes. Moreover, the main degradation products detected were 2,4-dimethylheptane (C9H20), 2,5-dimethylheptane (C9H20), and 3,3-dimethylhexane (C8H18).
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Affiliation(s)
- Yongxing Qian
- School of Civil Engineering and Architecture, NingboTech University, Ningbo 315000, China; (Y.Q.); (W.H.); (B.J.); (K.Z.)
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Wanling Han
- School of Civil Engineering and Architecture, NingboTech University, Ningbo 315000, China; (Y.Q.); (W.H.); (B.J.); (K.Z.)
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Fuhai Zhou
- Zhejiang Haiyi Environmental Protection Equipment Engineering Co., Ltd., Quzhou 324000, China;
| | - Bixiao Ji
- School of Civil Engineering and Architecture, NingboTech University, Ningbo 315000, China; (Y.Q.); (W.H.); (B.J.); (K.Z.)
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Huining Zhang
- School of Civil Engineering and Architecture, NingboTech University, Ningbo 315000, China; (Y.Q.); (W.H.); (B.J.); (K.Z.)
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
- Correspondence: ; Tel./Fax: +86-150-5803-3683
| | - Kefeng Zhang
- School of Civil Engineering and Architecture, NingboTech University, Ningbo 315000, China; (Y.Q.); (W.H.); (B.J.); (K.Z.)
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
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Dou W, Peng X, Kong L, Hu X. A review on the removal of Cl(-I) with high concentration from industrial wastewater: Approaches and mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153909. [PMID: 35183638 DOI: 10.1016/j.scitotenv.2022.153909] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/18/2022] [Accepted: 02/12/2022] [Indexed: 06/14/2023]
Abstract
Large quantities of wastewaters containing high concentrations of Cl(-I) can be generated in several industries when chloride-containing materials and additive agents are employed. Because Cl(-I) is unavailable to microorganisms, physicochemical methods are generally used for the removal of Cl(-I); however, as the most stable form of chlorine under aqueous conditions, Cl(-I) in wastewaters is difficult to remove to achieve low residual concentrations through common physicochemical methods. This paper provides new insights into traditional precipitation, oxidation, ion exchange and physical separation methods, as well as newly developed approaches, for Cl(-I) removal from various industrial wastewaters through analysis of the mechanisms, applicable conditions, optimum parameters, and method advantages and disadvantages. Moreover, the developmental trends and potential improvements to these approaches are also presented. Currently, precipitation is the most common and efficient Cl(-I) removal method, for which ultraviolet (UV) light is regarded as an effective means of improvement. Additionally, advanced oxidation processes (AOPs), where Cl(-I) can be oxidized to generate Cl radicals, Cl2- radicals, Cl2 gas, etc., show great promise for Cl(-I) removal. This review provides a theoretical foundation for the effective treatment and for the secondary utilization of industrial wastewaters containing Cl(-I).
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Affiliation(s)
- Wenyue Dou
- Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse, School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221018, China.
| | - Xianjia Peng
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Resource Recovery, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Linghao Kong
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Resource Recovery, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xingyun Hu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Beijing Key Laboratory of Industrial Wastewater Treatment and Resource Recovery, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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Zhang HL, Hu YQ, Zhang Y, Qin DN, Wang H. Effects of pure oxygen aeration on organic pollutants removal performance and soluble microbial products characteristics of salt-tolerant activated sludge. ENVIRONMENTAL TECHNOLOGY 2022; 43:1471-1479. [PMID: 33063640 DOI: 10.1080/09593330.2020.1838622] [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: 06/23/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
The effects of pure oxygen aeration on organic pollutants removal performance and effluent soluble microbial products (SMP) characteristics of salt-tolerant sludge for the treatment of wastewater with the salinity from 1.0% to 3.5% were investigated. The results showed that the oxygen transfer efficiency of the pure oxygen aeration was higher than that of the air aeration. At the low salinities (0.5%, 1.0%, 1.5%), the total organic carbon (TOC) removal rates were 71.42%, 72.88% and 76.30%, respectively, much higher than those with air aeration. However, there were no significant differences of TOC removal efficiency between the air aeration and the pure oxygen aeration at high salinities (2.5% and 3.5%). The SMP contents showed a trend of first decline and then increase generally. The content of SMP with pure oxygen aeration was lower than that with air aeration at low salinity, whereas an opposite result was obtained for salinity above 2.5%. Five excitation-emission matrix (EEM) fluorescence peaks detected in the SMP with pure oxygen aeration and air aeration were assigned to tryptophan protein-like, tyrosine protein-like and humic acid-like substances. Humic acid-like fluorescence mainly appeared in the SMP with air aeration, which may be due to respiratory failure under air aeration conditions.
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Affiliation(s)
- Hong-Ling Zhang
- Nanjing Institute of Environmental Science, MEP, Nanjing, People's Republic of China
- School of the Environment, Nanjing Normal University, Nanjing, People's Republic of China
| | - Ya-Qi Hu
- School of the Environment, Nanjing Normal University, Nanjing, People's Republic of China
| | - Yong Zhang
- School of the Environment, Nanjing Normal University, Nanjing, People's Republic of China
- Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, People's Republic of China
- State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing, People's Republic of China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, People's Republic of China
| | - Dan-Ning Qin
- School of the Environment, Nanjing Normal University, Nanjing, People's Republic of China
| | - Hong Wang
- School of the Environment, Nanjing Normal University, Nanjing, People's Republic of China
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11
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Sengar A, Vijayanandan A. Effects of pharmaceuticals on membrane bioreactor: Review on membrane fouling mechanisms and fouling control strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:152132. [PMID: 34863739 DOI: 10.1016/j.scitotenv.2021.152132] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/21/2021] [Accepted: 11/28/2021] [Indexed: 05/27/2023]
Abstract
Pharmaceuticals have become contaminants of emerging concern due to their toxicity towards aquatic life and pseudo persistent nature in the environment. Membrane bioreactor (MBR) is one such technology that has the potential to act as a barrier against the release of pharmaceuticals into the environment. Fouling is the deposition of the constituents of the mixed liquor on the membrane surface and it limit the world-wide applicability of MBRs. To remove foulant layer, aggressive chemicals and extra cost consideration in terms of energy are required. Extracellular polymeric substances (EPS) and soluble microbial products (SMP) are recognized as principal foulants. Presence of pharmaceuticals has been found to increase the fouling in MBRs. Fouling aggravates in proportion to the concentration of pharmaceuticals. Pharmaceuticals exert chemical stress in microbes, hence forcing them to secrete more EPS/SMP. Pharmaceuticals alter the composition of the foulants and affect microbial metabolism, thereby inflicting direct/indirect effects on fouling. Pharmaceuticals have been found to increase or decrease the size of sludge flocs, however the exact mechanism that govern the floc size change is yet to be understood. Different techniques such as coupling advanced oxidation processes with MBR, adding activated carbon, bioaugmenting MBR with quorum quenching strains have shown to reduce fouling in MBRs treating pharmaceutical wastewater. These fouling mitigation techniques work on reducing the EPS/SMP concentration, thereby alleviating fouling. The present review provides a comprehensive understanding of the effects induced by pharmaceuticals in the activated sludge characteristics and identifying the fouling mechanism. Furthermore, significant knowledge gaps and recent advances in fouling mitigation strategies are discussed. This review has also made an effort to highlight the positive aspect of the foulant layer in retaining pharmaceuticals and antibiotic resistance genes, thereby suggesting a possible delicate trade-off between the flux decline and enhanced removal of pharmaceuticals.
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Affiliation(s)
- Ashish Sengar
- Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Arya Vijayanandan
- Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
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12
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Ab Hamid NH, Wang DK, Smart S, Ye L. A green, hybrid cleaning strategy for the mitigation of biofouling deposition in the elevated salinity forward osmosis membrane bioreactor (FOMBR) operation. CHEMOSPHERE 2022; 288:132612. [PMID: 34678348 DOI: 10.1016/j.chemosphere.2021.132612] [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: 08/24/2021] [Revised: 10/11/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Forward osmosis membrane bioreactors (FOMBRs) are currently gaining attention from the wastewater treatment industry, for their potential to produce high effluent quality and a relatively better flux stability against fouling. However, only using physical cleaning methods is not sufficient to recover the water flux performance satisfactorily under a long-term operation. This study comprehensively investigated the efficiency of a hybrid, environmentally-friendly cleaning strategy involving a combination of physical and free nitrous acid (FNA) cleanings under a long-term FOMBR operation. During 92 days of FOMBR operation, physical cleaning recovered the water flux by 85%, whilst FNA cleaning contributed to an additional 5% of the recovery. In addition, FNA cleaning also offered a retardation of fouling deposition by maintaining the water flux 18-30% more than that obtained by only the physical cleaning. A possible mechanism for FNA's role as the cleaning reagent was proposed for the first time in this study based on the water flux performance and membrane autopsy analysis. The results showed FNA cleaning broke down the residual fouling layer, preferencing protein-based substances. A lower ratio of protein to polysaccharides of the residual fouling layer contributed to a more negatively charged membrane surface (- 42.34 ± 0.30 mV) compared to the virgin one (- 17.54 ± 0.81 mV). This resulted in a stronger electrostatic repulsion between the foulants and the membrane surface, and thus slowed down the biofouling deposition process. This study suggested FNA solution has the great potential not only to recover the membrane performance, also as a strategy to slow down fouling deposition.
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Affiliation(s)
- Nur Hafizah Ab Hamid
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - David K Wang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Simon Smart
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia
| | - Liu Ye
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, QLD, 4072, Australia.
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13
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Aslam A, Khan SJ, Shahzad HMA. Anaerobic membrane bioreactors (AnMBRs) for municipal wastewater treatment- potential benefits, constraints, and future perspectives: An updated review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 802:149612. [PMID: 34438128 DOI: 10.1016/j.scitotenv.2021.149612] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/11/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
The application of Anaerobic Membrane Bioreactors (AnMBRs) for municipal wastewater treatment has been made sufficiently sustainable for practical implementations. The potential benefits are significant as AnMBRs effectively remove a broad range of contaminants from wastewater for water reuse, degrade organics in wastewater to yield methane-rich biogas for resultant energy production, and concentrate nutrients for subsequent recovery for fertilizer production. However, there still exist some concerns requiring vigilant considerations to make AnMBRs economically and technically viable. This review paper briefly describes process fundamentals and the basic AnMBR configurations and highlights six major factors which obstruct the way to AnMBRs installations affecting their performance for municipal wastewater treatment: (i) organic strength, (ii) membrane fouling, (iii) salinity build-up, (iv) inhibitory substances, (v) temperature, and (vi) membrane stability. This review also covers the energy utilization and energy potential in AnMBRs aiming energy neutrality or positivity of the systems which entails the requirement to further determine the economics of AnMBRs. The implications and related discussions have also been made on future perspectives of the concurrent challenges being faced in AnMBRs operation.
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Affiliation(s)
- Alia Aslam
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
| | - Sher Jamal Khan
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan.
| | - Hafiz Muhammad Aamir Shahzad
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
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14
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Brito RS, Almeida MC, Silva N, Barreto S, Veríssimo F. Assessing intermittent saline inflows in urban water systems. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:90-103. [PMID: 35050868 DOI: 10.2166/wst.2021.622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Urban water drainage systems' primary function is to transport sanitary or stormwater. The intrusion of saline waters has recognized detrimental effects. Especially in coastal areas, saline inflows can compromise performance by increasing the risk of untreated discharges, weakening the structural condition of concrete or metallic components, reducing the effectiveness of wastewater treatment processes and limiting the potential reuse for irrigation. Performance deterioration can be prevented by an early assessment of exposure to saline water, followed by timely actions to control its causes and consequences. The paper describes a procedure for diagnosing undue saline inflows. The procedure is based on the determination of saline inflow's magnitude, acceptance levels, and contribution to the system's performance. Contextual factors and performance indicators, and their reference values, are selected for the assessment. Options to address the problem are proposed, depending on the results. These options can relate to organizational, operational, and structural actions. Application to a case study allowed to validate the method and discuss the results. Here, saline volumes entering the system are quite relevant (almost 30%), posing problems regarding corrosion, treatment plant operation and significant concrete exposure to intermittent saline waters.
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Affiliation(s)
- R S Brito
- LNEC - National Laboratory of Civil Engineering, Av. do Brasil, 101, 1700 066 Lisboa, Portugal E-mail:
| | - M C Almeida
- LNEC - National Laboratory of Civil Engineering, Av. do Brasil, 101, 1700 066 Lisboa, Portugal E-mail:
| | - N Silva
- Águas do Algarve, S.A. Rua do Repouso, n° 10, 8000-302, Faro, Portugal
| | - S Barreto
- Águas do Algarve, S.A. Rua do Repouso, n° 10, 8000-302, Faro, Portugal
| | - F Veríssimo
- Águas do Algarve, S.A. Rua do Repouso, n° 10, 8000-302, Faro, Portugal
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15
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Ryu J, Jung J, Park K, Song W, Choi B, Kweon J. Humic acid removal and microbial community function in membrane bioreactor. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126088. [PMID: 34229409 DOI: 10.1016/j.jhazmat.2021.126088] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/16/2021] [Accepted: 05/07/2021] [Indexed: 06/13/2023]
Abstract
A membrane bioreactor with humic acid substrate (MBR-H) was operated to investigate organic removal and membrane performance. Approximately, 60% of chemical oxygen demand removal was observed in MBR-H. The biosorption capacity reached to the maximum value of 29.2 mg g-1 in the experiments with various activated sludge concentrations and the amount adsorbed on the newly produced microbes was limited. To understand key functions of microorganisms in the biodegradation of humic acid, the microbial community was examined. The dominant phylum was changed from Actinobacteria at the raw sludge to Proteobacteria at the MBR-H. Especially, great increases of β-, γ-, and δ-Proteobacteria in the MBR-H indicated that those class of Proteobacteria played a vital role in humic acid removal. Investigation at the genus level showed enrichment of Stenotrophobacter in the MBR-H, which indicated the presence of metabolites in the proposed humic substance degradation pathway. In addition, the bacteria producing extracellular polymeric substances were increased in the MBR-H. Substantial variation of microbial community function was occurred in the MBR to degrade humic acid. Operational parameters in MBRs might be sought to maintain water permeability and to obtain preferable condition to evolution of microbial consortia for degradation of the refractory organic matter.
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Affiliation(s)
- JunHee Ryu
- Department of Environmental Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
| | - JaeHyun Jung
- HANSU Technical Service Ltd., Bundang Techno-Park, 145 Yatap-Dong, Bundang-Gu, Sungnam-City, Kyunggi-Do 13510, Republic of Korea.
| | - KiYoung Park
- Department of Environmental Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
| | - WonJung Song
- Department of Environmental Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
| | - ByeongGyu Choi
- Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research, Hwangyeong-ro 42, Seo-gu, Incheon 22689, Republic of Korea.
| | - JiHyang Kweon
- Department of Environmental Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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16
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Martínez R, Ruiz MO, García A, Ramos C, Diez V. Effect of salinity and temperature on the extraction of extracellular polymeric substances from an anaerobic sludge and fouling in submerged hollow fibre membranes. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Zhang H, Wang Q, Liu H, Kong B, Chen Q. In vitro growth performance, antioxidant activity and cell surface physiological characteristics of Pediococcus pentosaceus R1 and Lactobacillus fermentum R6 stressed at different NaCl concentrations. Food Funct 2021; 11:6376-6386. [PMID: 32613220 DOI: 10.1039/c9fo02309g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This study investigated the impact of NaCl concentrations on the growth performance, antioxidant activity, and cell surface physiological characteristics of Pediococcus pentosaceus R1 and Lactobacillus fermentum R6. The growth of the two strains was significantly inhibited by 4 and 6% NaCl and stagnated at 8% NaCl (P < 0.05). Compared with the control, both strains showed higher acid-producing activity, antioxidant activity and autoaggregation ability at 2 or 4% NaCl. A lower cell surface hydrophobicity of the two strains was observed with increased NaCl concentrations. High NaCl concentrations resulted in cell surface damage and deformation and even slowed the proliferation of the strains, and led to significant shifts in amide A and amide III groups in proteins and the C-H stretching of >CH2 in fatty acids (P < 0.05). In summary, appropriate NaCl concentrations (2 and 4%) improved the antioxidant activity of the two strains, while the higher NaCl concentrations (6%) decreased their antioxidant activity, which may be due to the associated changes in the cell surface structural properties of the two strains.
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Affiliation(s)
- Huan Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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18
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Xu M, Zhou W, Chen X, Zhou Y, He B, Tan S. Analysis of the biodegradation performance and biofouling in a halophilic MBBR-MBR to improve the treatment of disinfected saline wastewater. CHEMOSPHERE 2021; 269:128716. [PMID: 33121810 PMCID: PMC7578672 DOI: 10.1016/j.chemosphere.2020.128716] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/12/2020] [Accepted: 10/20/2020] [Indexed: 05/12/2023]
Abstract
Disinfectant-containing wastewaters have been generated from many places, including marine industries. The synthetic NaClO-containing wastewaters have been effectively treated in a saline MBBR-MBR (moving bed biofilm reactor & membrane bioreactor) system containing marine microorganisms. A low concentration of NaCl (below 100 mg/L) is not enough to kill the microorganisms, but can affect their bioactivity and induce membrane biofouling. A linear relationship has been obtained for the half-life of membrane biofouling as a function of the NaClO concentration (10-100 mg/L): [half-life] = 25-0.12 × [NaClO concentration]. The COD and NH3-N removals are the highest at a salinity of 30 g/L for the marine bioreactors. The behaviour of the typical biofoulants, measured real-timely by fluorescence spectroscopy, can indicate the levels of membrane biofouling and microbial activity, responding to the NaClO and NaCl influences. Based on the behaviour of biofoulants, this work has also proposed a novel strategy of biofoulants monitoring for membrane antifouling, where antifouling responses can be carried out when the concentration of biofoulants significantly increases.
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Affiliation(s)
- Mengchang Xu
- Academician Workstation, Changsha Medical University, Changsha, 410219, China
| | - Wenhu Zhou
- Academician Workstation, Changsha Medical University, Changsha, 410219, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, China.
| | - Xuncai Chen
- School of Forensic Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Ying Zhou
- Academician Workstation, Changsha Medical University, Changsha, 410219, China
| | - Binsheng He
- Academician Workstation, Changsha Medical University, Changsha, 410219, China
| | - Songwen Tan
- Academician Workstation, Changsha Medical University, Changsha, 410219, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, China.
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19
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Gonzalez-Silva BM, Jonassen KR, Bakke I, Østgaard K, Vadstein O. Understanding structure/function relationships in nitrifying microbial communities after cross-transfer between freshwater and seawater. Sci Rep 2021; 11:2979. [PMID: 33536458 PMCID: PMC7859187 DOI: 10.1038/s41598-021-82272-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 12/17/2020] [Indexed: 12/05/2022] Open
Abstract
In this study, nitrification before and after abrupt cross-transfer in salinity was investigated in two moving bed biofilm reactors inoculated with nitrifying cultures that had adaptation to freshwater (FR) and seawater salinities (SR). FR and SR MBRRs were exposed to short and long term cross-transfer in salinity, and the functional capacity of nitrifying microbial communities was quantified by the estimation of ammonia and nitrite oxidation rates. Salinity induced successions were evaluated before and after salinity change by deep sequencing of 16S rRNA gene amplicons and statistical analysis. The bacterial community structure was characterized and Venn diagrams were included. The results indicated that after salinity cross-transfer, the FR was not significantly recovered at seawater salinity whereas SR showed high resistance to stress caused by low-salt. Succession and physiological plasticity were the main mechanisms of the long-term adaption of the nitrifying communities exposed to abrupt salinity changes. Independently of salinity, some nitrifiers presented high physiological plasticity towards salinity and were very successful at both zero and full seawater salinity. SR culture is robust and suitable inoculum for ammonium removal from recirculating aquaculture systems and industrial wastewaters with variable and fast salinity changes. Our findings contradict the current perspective of the significance of salinity on the structure of nitrifying communities.
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Affiliation(s)
- Blanca M Gonzalez-Silva
- Department of Biotechnology and Food Science, Faculty of Natural Sciences and Technology, NTNU-Norwegian University of Science and Technology, Sem Saelands v. 6/8, N-7491, Trondheim, Norway. .,Department of Civil and Environmental Engineering, NTNU-Norwegian University of Science and Technology, S. P. Andersens veg 5, N-7031, Trondheim, Norway.
| | - Kjell Rune Jonassen
- Department of Biotechnology and Food Science, Faculty of Natural Sciences and Technology, NTNU-Norwegian University of Science and Technology, Sem Saelands v. 6/8, N-7491, Trondheim, Norway.,VEAS, Bjerkåsholmen 125, 3470, Slemmestad, Oslo, Norway
| | - Ingrid Bakke
- Department of Biotechnology and Food Science, Faculty of Natural Sciences and Technology, NTNU-Norwegian University of Science and Technology, Sem Saelands v. 6/8, N-7491, Trondheim, Norway
| | - Kjetill Østgaard
- Department of Biotechnology and Food Science, Faculty of Natural Sciences and Technology, NTNU-Norwegian University of Science and Technology, Sem Saelands v. 6/8, N-7491, Trondheim, Norway
| | - Olav Vadstein
- Department of Biotechnology and Food Science, Faculty of Natural Sciences and Technology, NTNU-Norwegian University of Science and Technology, Sem Saelands v. 6/8, N-7491, Trondheim, Norway
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20
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Zhang H, Zhou W, Zhan X, Chi Z, Li W, He B, Tan S. Biodegradation performance and biofouling control of a halophilic biocarriers-MBR in saline pharmaceutical (ampicillin-containing) wastewater treatment. CHEMOSPHERE 2021; 263:127949. [PMID: 32822933 DOI: 10.1016/j.chemosphere.2020.127949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/23/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
This work develops a halophilic biocarriers-MBR for saline pharmaceutical wastewater treatment. The system has effectively treated the ampicillin-containing saline wastewater for 32 days, when the ampicillin concentration is lower than 20 mg/L. The system can tolerate the saline organic wastewater with a reasonable biodegradability (removals of COD over 75%) when the ampicillin concentration is 50 mg/L. The system has a bad performance in biodegradation (COD removals around 60-70%) and fouled within 16 days at a high ampicillin concentration of 100 mg/L. At high transmembrane pressures over 30 KPa, some ampicillin molecules may permeate through the membrane causing decreases in the ampicillin removal. The concentrations of protein and carbohydrate in EPS and SMP have increased over time and with increasing the ampicillin concentration. The method of biofouling control in MBR for the ampicillin situations has been proposed based on monitoring the concentrations of EPS and SMP. The drying-assisted monitoring of membrane biofoulants has showed a better efficiency than the monitoring of transmembrane pressure for membrane anti-biofouling in the treatment of pharmaceutical saline wastewaters where a spectroscopic detection can be hardly applied. This work may benefit relative research works for the control of biodegradation performance and membrane biofouling to better treat saline pharmaceutical wastewaters.
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Affiliation(s)
- Hanyong Zhang
- Academician Workstation, Changsha Medical University, Changsha, 410219, China
| | - Wenhu Zhou
- Academician Workstation, Changsha Medical University, Changsha, 410219, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, China.
| | - Xuehui Zhan
- School of Physics and Electronic Science, Changsha University of Science and Technology, Changsha, 410114, China
| | - Zhenxing Chi
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, Shandong, 264209, China
| | - Weiguo Li
- Department of Environmental Engineering, Harbin Institute of Technology, Weihai, Shandong, 264209, China
| | - Binsheng He
- Academician Workstation, Changsha Medical University, Changsha, 410219, China
| | - Songwen Tan
- Academician Workstation, Changsha Medical University, Changsha, 410219, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, China; Department of Environmental Engineering, Harbin Institute of Technology, Weihai, Shandong, 264209, China.
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21
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Pang H, Xin X, He J, Cui B, Guo D, Liu S, Yan Z, Liu C, Wang X, Nan J. Effect of NaCl Concentration on Microbiological Properties in NaCl Assistant Anaerobic Fermentation: Hydrolase Activity and Microbial Community Distribution. Front Microbiol 2020; 11:589222. [PMID: 33162967 PMCID: PMC7581909 DOI: 10.3389/fmicb.2020.589222] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/14/2020] [Indexed: 01/27/2023] Open
Abstract
Previous studies have demonstrated that sludge hydrolysis and short-chain fatty acids (SCFAs) production were improved through NaCl assistant anaerobic fermentation. However, the effect of NaCl concentrations on hydrolase activity and microbial community structure was rarely reported. In this study, it was found that α-glucosidase activity and some carbohydrate-degrading bacteria were inhibited in NaCl tests, owing to their vulnerability to high NaCl concentration. Correspondingly, the microbial community richness and diversity were reduced compared with the control test, while the evenness was not affected by NaCl concentration. By contrast, the protease activity was increased in the presence of NaCl and reached the highest activity at the NaCl concentration of 20 g/L. The protein-degrading and SCFAs-producing bacteria (e.g., Clostridium algidicarnis and Proteiniclasticum) were enriched in the presence of NaCl, which were salt-tolerant.
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Affiliation(s)
- Heliang Pang
- School of Environment, Harbin Institute of Technology, Harbin, China
| | - Xiaodong Xin
- Department of Environmental Science and Engineering, Huaqiao University, Xiamen, China
| | - Junguo He
- School of Civil Engineering, Guangzhou University, Guangzhou, China
| | - Baihui Cui
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, Singapore
| | - Dabin Guo
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, China.,Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, Singapore
| | - Shiming Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, Singapore
| | - Zhongsen Yan
- College of Civil Engineering, Fuzhou University, Fuzhou, China
| | - Chong Liu
- Frog Biotechnology Co., LTD, Harbin, China
| | - Xinyu Wang
- School of Environment, Harbin Institute of Technology, Harbin, China
| | - Jun Nan
- School of Environment, Harbin Institute of Technology, Harbin, China
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22
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Carbonell-Alcaina C, Soler-Cabezas JL, Bes-Piá A, Vincent-Vela MC, Mendoza-Roca JA, Pastor-Alcañiz L, Álvarez-Blanco S. Integrated Membrane Process for the Treatment and Reuse of Residual Table Olive Fermentation Brine and Anaerobically Digested Sludge Centrate. MEMBRANES 2020; 10:membranes10100253. [PMID: 32987759 PMCID: PMC7598636 DOI: 10.3390/membranes10100253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/04/2020] [Accepted: 09/16/2020] [Indexed: 11/16/2022]
Abstract
Management of wastewater is a major challenge nowadays, due to increasing water demand, growing population and more stringent regulations on water quality. Wastewaters from food conservation are especially difficult to treat, since they have high salinity and high organic matter concentration. The aim of this work is the treatment of the effluent from a table olive fermentation process (FTOP) with the aim of reusing it once the organic matter is separated. The process proposed in this work consists of the following membrane-based technologies: Ultrafiltration (UF) (UP005, Microdyn Nadir), Forward Osmosis (FO) (Osmen2521, Hydration Technology Innovation) and Nanofiltration (NF) (NF245, Dow). The FO process was implemented to reduce the salinity entering the NF process, using the FTOP as draw solution and, at the same time, to concentrate the centrate produced in the sludge treatment of a municipal wastewater treatment plant with the aim of obtaining a stream enriched in nutrients. The UF step achieved the elimination of 50% of the chemical oxygen demand of the FTOP. The UF permeate was pumped to the FO system reducing the volume of the anaerobically digested sludge centrate (ADSC) by a factor of 3 in 6.5 h. Finally, the ultrafiltrated FTOP diluted by FO was subjected to NF. The transmembrane pressure needed in the NF stage was 40% lower than that required if the ultrafiltration permeate was directly nanofiltered. By means of the integrated process, the concentration of organic matter and phenolic compounds in the FTOP decreased by 97%. Therefore, the proposed process was able to obtain a treated brine that could be reused in other processes and simultaneously to concentrate a stream, such as the ADSC.
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Affiliation(s)
- Carlos Carbonell-Alcaina
- Instituto de Seguridad Industrial, Radiofísica y Medio Ambiental, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (C.C.-A.); (J.L.S.-C.); (A.B.-P.); (M.C.V.-V.); (J.A.M.-R.)
| | - Jose Luis Soler-Cabezas
- Instituto de Seguridad Industrial, Radiofísica y Medio Ambiental, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (C.C.-A.); (J.L.S.-C.); (A.B.-P.); (M.C.V.-V.); (J.A.M.-R.)
| | - Amparo Bes-Piá
- Instituto de Seguridad Industrial, Radiofísica y Medio Ambiental, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (C.C.-A.); (J.L.S.-C.); (A.B.-P.); (M.C.V.-V.); (J.A.M.-R.)
| | - María Cinta Vincent-Vela
- Instituto de Seguridad Industrial, Radiofísica y Medio Ambiental, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (C.C.-A.); (J.L.S.-C.); (A.B.-P.); (M.C.V.-V.); (J.A.M.-R.)
| | - Jose Antonio Mendoza-Roca
- Instituto de Seguridad Industrial, Radiofísica y Medio Ambiental, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (C.C.-A.); (J.L.S.-C.); (A.B.-P.); (M.C.V.-V.); (J.A.M.-R.)
| | - Laura Pastor-Alcañiz
- Depuración de Aguas del Mediterráneo (DAM), Avenida Benjamín Franklin 21, Parque Tecnológico, 46980 Paterna, Spain;
| | - Silvia Álvarez-Blanco
- Instituto de Seguridad Industrial, Radiofísica y Medio Ambiental, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (C.C.-A.); (J.L.S.-C.); (A.B.-P.); (M.C.V.-V.); (J.A.M.-R.)
- Correspondence: ; Tel.: +34-96-387-96-30; Fax: +34-96-387-76-39
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Pang H, Xu J, He J, Pan X, Ma Y, Li L, Li K, Yan Z, Nan J. Enhanced anaerobic fermentation of waste activated sludge by NaCl assistant hydrolysis strategy: Improved bio-production of short-chain fatty acids and feasibility of NaCl reuse. BIORESOURCE TECHNOLOGY 2020; 312:123303. [PMID: 32521466 DOI: 10.1016/j.biortech.2020.123303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/28/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
This study developed an economical approach for enhancing short-chain fatty acids (SCFAs) production from waste activated sludge (WAS) by NaCl assistant anaerobic fermentation. With NaCl addition at 20 g/L, sludge disintegration with extracellular polymeric substance (EPS) disruption and cell lysis were induced owing to the attack of osmotic pressure, which facilitated WAS solubilization with release of biodegradable organic matters. The SCOD sharply increased to 4092 mg/L (SCOD/TCOD = 23.9%) after 2-day hydrolysis, against 1462 mg/L in the control. After 4-day anaerobic fermentation, considerable SCFAs production of 288.2 mg COD/g VSS was achievable. More than 60% of the SCFAs was composed of acetic and propionic acids. The feasibility of bio-electrogenesis in microbial fuel cell (MFC) utilizing fermentative liquid was assessed. As such, the produced SCFAs could be consumed with energy recovery, thereby the used NaCl was reusable, which created environmental and economic benefits, e.g. reduced NaCl consumption and cost, negligible residual NaCl.
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Affiliation(s)
- Heliang Pang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jie Xu
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Junguo He
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Civil Engineering, Guangzhou University, Guangzhou 510006, PR China.
| | - Xinlei Pan
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yingqun Ma
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore
| | - Le Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Kunyi Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Zhongsen Yan
- College of Civil Engineering, Fuzhou University, Fujian 350116, PR China
| | - Jun Nan
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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24
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He Q, Cheng Z, Zhang D, Main K, Feng C, Ergas SJ. A sulfur-based cyclic denitrification filter for marine recirculating aquaculture systems. BIORESOURCE TECHNOLOGY 2020; 310:123465. [PMID: 32388206 DOI: 10.1016/j.biortech.2020.123465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Nitrogen removal from saline wastewater is challenging due to adverse effects of salinity on biological processes. A novel sulfur-autotrophic cyclic denitrification filter (CDF) was tested for marine recirculating aquaculture systems (RAS) under varying conditions. Low ammonia, nitrite and sulfide concentrations were maintained at residence times between 4 and 12 h. After introduction of Poecilia sphenops, concentrations of NH4+-N, NO2--N, NO3--N were maintained below 1, 1, and 60 mg/L, respectively. Fish waste inputs to the CDF contributed to mixotrophic denitrification and low sulfate production. A mass balance showed that 7% of the feed nitrogen was assimilated by fish, 6% was removed by passive denitrification (e.g., in anoxic zones in filters), 60% in the CDF and 27% was discharged during sampling and solids removal. Daily fresh water addition was <2% of fish tank volumes. The results are promising as a low cost alternative for saline wastewater denitrification.
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Affiliation(s)
- Qiaochong He
- School of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China; Department of Civil & Environmental Engineering, University of South Florida, 4202 E. Fowler Ave, ENG 030, Tampa, FL 33620, USA
| | - Zhang Cheng
- Department of Civil & Environmental Engineering, University of South Florida, 4202 E. Fowler Ave, ENG 030, Tampa, FL 33620, USA
| | - Dongqing Zhang
- Department of Civil & Environmental Engineering, University of South Florida, 4202 E. Fowler Ave, ENG 030, Tampa, FL 33620, USA
| | - Kevan Main
- Directorate of Fisheries and Aquaculture, Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
| | - Sarina J Ergas
- Department of Civil & Environmental Engineering, University of South Florida, 4202 E. Fowler Ave, ENG 030, Tampa, FL 33620, USA.
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25
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Turan NB, Erkan HS, Chormey DS, Cağlak A, Bakirdere S, Engin GO. Feasibility Studies on the Effect of Natural Plant Compounds on Sludge Characteristics in a Batch-Type Aerobic Reactor and N-butyryl-L Homoserine Lactone. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1745222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Nouha Bakaraki Turan
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Hanife Sari Erkan
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Dotse Selali Chormey
- Faculty of Art and Science, Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Abdulkadir Cağlak
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Sezgin Bakirdere
- Faculty of Art and Science, Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Guleda Onkal Engin
- Faculty of Civil Engineering, Department of Environmental Engineering, Yildiz Technical University, Esenler, Istanbul, Turkey
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26
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Valverde-Pérez B, Pape ML, Kjeldgaard AF, Zachariae AA, Schneider C, Hélix-Nielsen C, Zarebska A, Smets BF. Dewatering methanotrophic enrichments intended for single cell protein production using biomimetic aquaporin forward osmosis membranes. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116133] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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27
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Dischinger SM, Rosenblum J, Noble RD, Gin DL. Evaluation of a nanoporous lyotropic liquid crystal polymer membrane for the treatment of hydraulic fracturing produced water via cross-flow filtration. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117313] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Cai Y, Zaidi AA, Shi Y, Zhang K, Li X, Xiao S, Lin A. Influence of salinity on the biological treatment of domestic ship sewage using an air-lift multilevel circulation membrane reactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:37026-37036. [PMID: 31745775 DOI: 10.1007/s11356-019-06813-4] [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: 06/10/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Recently, strict standards for ship domestic sewage discharge have been implemented by the International Maritime Organization (IMO). The high salinity of ship sewage was considered a key factor influencing the removal efficiency of ship sewage treatment systems. In the present study, the salinity effect on the removal of chemical oxygen demand (COD) and ammonia nitrogen (NH4+-N) from ship domestic sewage was investigated by using a novel air-lift multilevel circulation membrane reactor (AMCMBR). Enzyme activity analysis and wavelet neural network (WNN) models were built to determine the mechanisms of the process. The experimental results indicate that high salinity levels (> 21 g/L) had a negative impact on COD and NH4+-N removal efficiencies, and low saline concentrations (≤ 21 g/L) caused a negligible effect. The COD and NH4-N removal efficiencies were 84% and 97%, respectively, at a salinity of 21 g/L, which were higher than those at low salinities (i.e., 7 g/L and 14 g/L). Invertase and nitrate reductase had a close relationship with removal performance, and they can be considered important indicators reflecting the operation effort under saline environments. With high predictive accuracies, the constructed WNN models simulated the complex COD and NH4+-N removal processes well under different saline concentrations, ensuring the long-term stable operation of the AMCMBR under different salinities.
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Affiliation(s)
- Yuhang Cai
- College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, PR China
| | - Asad A Zaidi
- Department of Engineering Sciences, PN Engineering College, National University of Sciences and Technology, Karachi, 75350, Pakistan
| | - Yue Shi
- College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, PR China.
| | - Kun Zhang
- College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, PR China
| | - Xin Li
- China Aviation Development Institute, No. 1 Wanlian Road, Shenyang City, Shenhe District, China
| | - Shihao Xiao
- College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, PR China
| | - Aqiang Lin
- College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, PR China
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29
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González JF, Parralejo AI, Bolívar HM, González J. Study of optimal conditions in semi-continuous anaerobic co-digestion of table olive effluents and pig manure in a perfectly stirred reactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:36922-36932. [PMID: 31745785 DOI: 10.1007/s11356-019-06830-3] [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: 05/20/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Brines from table olive elaboration were co-digested with pig manure, obtaining high methane productions. In particular, the methane yields obtained for pig manure total solid (TS) initial concentrations of 2%, 7%, 9% (wet basis, wt.) were 106, 213 and 247 mL CH4 gVS-1add, respectively, using mixtures of two types of brine (acid (A) and basic (B)) generated in the elaboration process. Moreover, an experiment with only basic brine was made, using a pig manure TS concentration of 7% wt. In this case, a methane yield of 224 mL CH4 gVS-1add was obtained. The methane production rate was calculated in experiments of 7% pig manure TS concentration and a high kinetic constant of 0.31 d-1 was obtained for the mixture of residual brine. Finally, the effect of Na+ cation concentration was evaluated in the mixture A:B during co-digestion processes with a 7% wt. pig manure TS concentration and inhibition was detected in this process with a [Na+] of 0.56% wt. of the total sample. An energy and economical study on the treatment of these wastewaters by means of anaerobic co-digestion demonstrated a great economic benefit for the producer industry, a reduction in the diesel consumption used to produce its energetic demand and a reduction cost of 3.63 €/m3 generated of A:B brines mixture with ratio 2:1.
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Affiliation(s)
- Juan F González
- Departamento de Física Aplicada, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. Elvas, s/n, 06071, Badajoz, Spain.
| | - Ana I Parralejo
- Departamento de cultivos extensivos: Biocombustibles, Cicytex, Consejería de Empleo, Empresa e Innovación, Junta de Extremadura, Finca La Orden, Guadajira, 06187, Badajoz, Spain
| | - Heidi M Bolívar
- Departamento de cultivos extensivos: Biocombustibles, Cicytex, Consejería de Empleo, Empresa e Innovación, Junta de Extremadura, Finca La Orden, Guadajira, 06187, Badajoz, Spain
| | - Jerónimo González
- Departamento de cultivos extensivos: Biocombustibles, Cicytex, Consejería de Empleo, Empresa e Innovación, Junta de Extremadura, Finca La Orden, Guadajira, 06187, Badajoz, Spain
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30
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Li H, Meng F, Duan W, Lin Y, Zheng Y. Biodegradation of phenol in saline or hypersaline environments by bacteria: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109658. [PMID: 31520955 DOI: 10.1016/j.ecoenv.2019.109658] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 07/27/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
With the continuous demand from industry for chemical raw materials, a large amount of high-salinity wastewater containing phenol is discharged into the aquatic environment, and the leakage of dangerous chemicals into the sea may lead to phenol pollution of the ocean. Phenol is a common chemical posing serious environmental hazard. Biodegradation is an effective, low-cost, environment-friendly method of removing phenol from water, but in hypersaline environments, traditional freshwater organisms are less efficacious. Here, at least 17 genera of bacteria from three phyla are found that can degrade phenol in different saline environments. The sources and taxonomy of halotolerant and halophilic bacteria are reviewed. Moreover, the pathway of phenol removal, kinetics of biodegradation, influencing factors, and recent treatment processes of wastewater are discussed.
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Affiliation(s)
- Hao Li
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China
| | - Fanping Meng
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Weiyan Duan
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China
| | - Yufei Lin
- National Marine Hazard Mitigation Service, Ministry of Natural Resource of the People's Republic of China, Beijing, 100194, China
| | - Yang Zheng
- Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China; College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; National Marine Hazard Mitigation Service, Ministry of Natural Resource of the People's Republic of China, Beijing, 100194, China
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31
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Yu Z, Li W, Tan S. Real-time monitoring of the membrane biofouling based on spectroscopic analysis in a marine MBBR-MBR (moving bed biofilm reactor-membrane bioreactor) for saline wastewater treatment. CHEMOSPHERE 2019; 235:1154-1161. [PMID: 31561306 DOI: 10.1016/j.chemosphere.2019.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 06/06/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
A MBBR-MBR system has been developed with marine microorganisms enriched for saline wastewater treatment in this work, showing high COD and NH3-N removals. The behaviour of fouling-related components (EPS and SMP) has been studied as functions of operating time (40-90 days), salinity (0-30 g/L NaCl) and backflow ratio (0-300%, from MBR to MBBR). High biodegradability of the MBBR-MBR at optimal conditions can induce more biodegradation of humic acid-like (λex/λem: 350nm/430 nm) and fulvic acid-like (260nm/445 nm) molecules to soluble microbial by-product-like molecules (275nm/325 nm), reducing the membrane biofouling rate. The biodegradation process is suggested by the excitation-emission matrix (EEM) images. In the study of sudden salinity shock, results show that real-time monitoring the concentration of biofoulants is more effective (operative time extended by 60%) than monitoring the transmembrane pressure (operative time extended by 33%) to prevent membrane fouling. Due to an early warning from the real-time monitoring, the coming membrane-fouling is predictable and the operating conditions, such as backflow ratio, can be changed to minimize the biofouling rate.
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Affiliation(s)
- Zhengyu Yu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China; Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Weiguo Li
- Department of Environmental Engineering, Harbin Institute of Technology (Weihai), Weihai, Shandong, 264209, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China; Department of Environmental Engineering, Harbin Institute of Technology (Weihai), Weihai, Shandong, 264209, China.
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32
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Lazrak A, Mandi L, Djeni TN, Neffa M, Ouazzani N. Assessing biomass diversity and performance of an activated sludge process treating saline table olive processing wastewater. ENVIRONMENTAL TECHNOLOGY 2019; 40:2608-2619. [PMID: 29493426 DOI: 10.1080/09593330.2018.1447603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 02/27/2018] [Indexed: 06/08/2023]
Abstract
This study aimed to determine the effects of salinity on the biomass behavior and its diversity in activated sludge process (ASP) treating the table olive processing wastewater (TOPW), and to evaluate ASP performances under increased TOPW concentration feeding, the numerical abundance, diversity and activity of the biomass, removal efficiencies of chemical oxygen demand (COD), phenolic compounds, nitrogen and phosphorus were evaluated. Results showed that biomass growth is very high and became faster according to an increase in the percentage of TOPW feeding and reached 5.2 gMLVSS l-1. The specific oxygen uptake rate (SOUR) analysis revealed that salinity up to 10 g l-1 provides an increase in biomass activity. SOUR reached a maximum of 20.3 gO2 gMLVSS-1 h-1. The increasing percentages of TOPW induce actually an evolution of microorganism's biodiversity; the microorganism communities were characterized by the abundance of halotolerant, Pseudomonas and Yeast genus that became the most abundant in the bioreactor as adaptation response against salinity. Furthermore, COD, phenolic compounds, nitrogen and phosphorus removal efficiencies attained 92.3%, 84.5%, 80% and 60%, respectively. A satisfactory release of extracellular polymeric substances is found to occur in the reactor with regard to increased saline TOPW, providing significant removal efficiencies and best settling of sludge.
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Affiliation(s)
- Asma Lazrak
- a Laboratory of Hydrobiology, Ecotoxicology and Sanitation (LHEA, URAC 33), BP/2390 , Marrakech , Morocco
- b National Center for Studies and Research on Water and Energy (CNEREE), BP/511, University Cadi Ayyad , Marrakech , Morocco
| | - Laila Mandi
- a Laboratory of Hydrobiology, Ecotoxicology and Sanitation (LHEA, URAC 33), BP/2390 , Marrakech , Morocco
- b National Center for Studies and Research on Water and Energy (CNEREE), BP/511, University Cadi Ayyad , Marrakech , Morocco
| | - Theodore N Djeni
- c Laboratory of Biotechnology and Food microbiology, University Nangui Abrogoua , Abidjan , Côte d'Ivoire
| | - Mounsef Neffa
- a Laboratory of Hydrobiology, Ecotoxicology and Sanitation (LHEA, URAC 33), BP/2390 , Marrakech , Morocco
- b National Center for Studies and Research on Water and Energy (CNEREE), BP/511, University Cadi Ayyad , Marrakech , Morocco
| | - Naaila Ouazzani
- a Laboratory of Hydrobiology, Ecotoxicology and Sanitation (LHEA, URAC 33), BP/2390 , Marrakech , Morocco
- b National Center for Studies and Research on Water and Energy (CNEREE), BP/511, University Cadi Ayyad , Marrakech , Morocco
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33
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Chen L, Hu Q, Zhang X, Chen Z, Wang Y, Liu S. Effects of salinity on the biological performance of anaerobic membrane bioreactor. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 238:263-273. [PMID: 30852403 DOI: 10.1016/j.jenvman.2019.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 01/31/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
The performance of anaerobic membrane bioreactor (AnMBR) was evaluated treating synthetic wastewater with various concentrations of NaCl (0-40 g/L), as well as the recovery phase. The effluent COD removal efficiency decreased from 96.4% to 95.0%, 91.4%, 86.7% and 77.7% with stepwise increasing of salt concentration from 0 to 5, 10, 20 and 40 g NaCl/L, respectively, then gradually increased to 94.1% during the recovery phase. Additionally, the significant changes in the content and composition of soluble microbial products (SMP) and extracellular polymer substance (EPS) were obtained under higher salt stress. GC-MS analyses were carried out for the effluent, and some new types of compounds, such as Dodecane, Undecane, and Ethyl Acetate, were found during salt exposure phases. The characterization of the microbial community was also investigated based on the analysis of genomic 16S rDNA, revealing the increasing salinity (5-40 g NaCl/L) could reduce the diversity of sludge microbial community in AnMBR. Meanwhile, the significant effects on the composition of dominate phyla (Proteobacteria, Bacteroidetes, Firmicutes and Chloroflexi) were found during the salt exposure phase.
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Affiliation(s)
- Lin Chen
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China.
| | - Qinzheng Hu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Xin Zhang
- School of Engineering, RMIT University, Melbourne, 3000, Australia
| | - Zaiyu Chen
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Yuchen Wang
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Shanshan Liu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
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34
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Urban wastewater reuse using a coupling between nanofiltration and ozonation: Techno-economic assessment. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.02.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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35
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Tan X, Acquah I, Liu H, Li W, Tan S. A critical review on saline wastewater treatment by membrane bioreactor (MBR) from a microbial perspective. CHEMOSPHERE 2019; 220:1150-1162. [PMID: 33395802 DOI: 10.1016/j.chemosphere.2019.01.027] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/01/2019] [Accepted: 01/03/2019] [Indexed: 05/12/2023]
Abstract
This work has reviewed from a microbial perspective and listed the typical studies on MBR techniques for saline wastewater treatments. When the salinity of influent is lower than 10 g/L NaCl, conventional MBR can be easily applied with adjusted operating conditions. For better biodegradation and anti-fouling ability at higher salinities (10-100 g/L), modified and hybrid MBR systems may need to be wisely designed according to the change in the microbial community and contents of EPS/SMP. To treat hypersaline wastewaters with salinities of up to 100 g/L NaCl, inoculation of halophilic bacteria has been applied in MBR works. Microbial community structures in some typical works have been discussed from a microbial perspective to benefit the identification and isolation of halophilic bacteria for future works. The following aspects are also suggested in future MBR research for saline wastewater treatment: (1) The structure design of MBR and the manufacture of advanced membranes; (2) The maintenance of the microbial biodiversity for anti-membrane fouling; (3) The metabolic mechanism for halophilic (or salt-tolerant) microorganisms against salinity shocks; (4) The revolution stage and process of microorganisms during saline wastewater treatment in MBR; (5) The effects of characteristics (cell structure, shape and metabolic pathways) of microorganisms on the salt tolerance; (6) Applying halophilic microorganisms for salinities over 150 g/L NaCl.
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Affiliation(s)
- Xu Tan
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China; Department of Civil and Environmental Engineering, University of Technology Sydney, Sydney 2007, Australia
| | - Isaac Acquah
- Programme of Biomedical Engineering, Kwame Nkrumah University of Science and Technology, PMB, University Post, Kumasi, Ghana
| | - Hanzhe Liu
- Department of Chemistry, Yanbian University, Yanji, 133002, China
| | - Weiguo Li
- Department of Environmental Engineering, Harbin Institute of Technology (Weihai), Weihai 264209, China
| | - Songwen Tan
- School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China.
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36
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Bella GD, Trapani DD. A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs). MEMBRANES 2019; 9:E24. [PMID: 30717246 PMCID: PMC6409801 DOI: 10.3390/membranes9020024] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 11/23/2022]
Abstract
The cake layer deposited on the membrane modules of membrane bioreactors (MBRs), especially under a submerged configuration, represents a relevant and fundamental mechanism deeply influencing the development of membrane fouling. It negatively affects the total resistance to filtration, while exerting a positive effect as a "pre-filter" promoting the "dynamic membrane" that protects the physical membrane from internal fouling. These two opposite phenomena should be properly managed, where the submerged membranes are usually subjected to a periodical cake layer removal through ordinary (permeate backwashing and air scouring) and/or irregular cleaning actions (manual physical cleaning). In this context, the physical removal of the cake layer is needed to maintain the design filtration characteristics. Nevertheless, the proper evaluation of the effect of physical cleaning operations is still contradictory and under discussion, referring in particular to the correct evaluation of fouling mechanisms. The aim of the present work was to summarize the different aspects that influence the fouling investigations, based on simple models for the evaluation of the resistance to filtration due to the cake layer, through physical cleaning operations.
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Affiliation(s)
- Gaetano Di Bella
- Facoltà di Ingegneria e Architettura, Università degli Studi di Enna "Kore", Cittadella universitaria, 94100 Enna, Italy.
| | - Daniele Di Trapani
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy.
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Li J, Ye W, Wei D, Ngo HH, Guo W, Qiao Y, Xu W, Du B, Wei Q. System performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress. BIORESOURCE TECHNOLOGY 2018; 270:512-518. [PMID: 30248650 DOI: 10.1016/j.biortech.2018.09.068] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 06/08/2023]
Abstract
The system performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress was conducted. It was found that the NH4+-N removal efficiency decreased from 98.4% to 42.0% after salinity stress increased to 20 g/L. Specific oxygen uptake rates suggested that AOB activity was more sensitive to the stress of salinity than that of NOB. Protein and polysaccharides contents showed an increasing tendency in both LB-EPS and TB-EPS after the salinity exposure. Moreover, EEM results indicated that protein-like substances were the main component in LB-EPS and TB-EPS as self-protection in response to salinity stress. Additionally, humic acid-like substances were identified as the main component in the effluent organic matter (EfOM) of partial nitrification biofilm, whereas fulvic acid-like substances were detected at 20 g/L salinity stress. Microbial community analysis found that Nitrosomonas as representative species of AOB were significantly inhibited under high salinity condition.
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Affiliation(s)
- Jibin Li
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, PR China
| | - Wei Ye
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, PR China
| | - Dong Wei
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, PR China.
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Wenshan Guo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Yiming Qiao
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, PR China
| | - Weiying Xu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, PR China
| | - Bin Du
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, PR China
| | - Qin Wei
- Key Laboratory of Chemical Sensing and Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
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Wen Q, Ji Y, Hao Y, Huang L, Chen Z, Sposob M. Effect of sodium chloride on polyhydroxyalkanoate production from food waste fermentation leachate under different organic loading rate. BIORESOURCE TECHNOLOGY 2018; 267:133-140. [PMID: 30014991 DOI: 10.1016/j.biortech.2018.07.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/06/2018] [Accepted: 07/07/2018] [Indexed: 06/08/2023]
Abstract
Polyhydroxyalkanoate (PHA) production integrated with anaerobic digestion is promising for food waste recycle. However, effect of salinity and high organic load in waste fermentation leachate (FWFL) on PHA production is unknown. Effects of sodium chloride (NaCl, 0, 5.0, 10.0 and 15.0 g/L) and organic loading rate (OLR, 1350 and 8433 mg COD/(L·d)) on the enrichment of PHA-accumulating microorganisms and PHA accumulation using FWFL were investigated in this research. Stable operation and obvious effect were observed under lower OLR with increasing NaCl concentration, but effect of NaCl was concealed by the inhibition caused by high OLR. Paracoccus was the dominant bacteria in all treatments with NaCl. Microbial community at low OLR and 5.0 g/L NaCl had the best performance reflected by kinetic parameters. Real FWFL with different NaCl concentrations was used in batch assays to verify the optimized enrichment strategy, reaching the maximum PHA content of 33.4% at 2.5 g/L NaCl.
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Affiliation(s)
- Qinxue Wen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ye Ji
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yaru Hao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Long Huang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Michal Sposob
- University College of Southeast Norway, Kjølnes Ring 56, Porsgrunn 3918, Norway
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39
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Pathak N, Fortunato L, Li S, Chekli L, Phuntsho S, Ghaffour N, Leiknes T, Shon HK. Evaluating the effect of different draw solutes in a baffled osmotic membrane bioreactor-microfiltration using optical coherence tomography with real wastewater. BIORESOURCE TECHNOLOGY 2018; 263:306-316. [PMID: 29753932 DOI: 10.1016/j.biortech.2018.04.123] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 04/13/2018] [Accepted: 04/30/2018] [Indexed: 06/08/2023]
Abstract
This study investigated the performance of an integrated osmotic and microfiltration membrane bioreactor for real sewage employing baffles in the reactor. To study the biofouling development on forward osmosis membranes optical coherence tomography (OCT) technique was employed. On-line monitoring of biofilm growth on a flat sheet cellulose triacetate forward osmosis (CTA-FO) membrane was conducted for 21 days. Further, the process performance was evaluated in terms of water flux, organic and nutrient removal, microbial activity in terms of soluble microbial products (SMP) and extracellular polymeric substance (EPS), and floc size. The measured biofouling layer thickness was in the order sodium chloride (NaCl) > ammonium sulfate (SOA) > potassium dihydrogen phosphate (KH2PO4). Very high organic removal (96.9 ± 0.8%) and reasonably good nutrient removal efficiency (85.2 ± 1.6% TN) was achieved. The sludge characteristics and biofouling layer thickness suggest that less EPS and higher floc size were the governing factors for less fouling.
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Affiliation(s)
- Nirenkumar Pathak
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Post Box 129, Broadway, NSW 2007, Australia
| | - Luca Fortunato
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological & Environmental Science & Engineering Division (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Sheng Li
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological & Environmental Science & Engineering Division (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Laura Chekli
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Post Box 129, Broadway, NSW 2007, Australia
| | - Sherub Phuntsho
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Post Box 129, Broadway, NSW 2007, Australia
| | - Noreddine Ghaffour
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological & Environmental Science & Engineering Division (BESE), Thuwal 23955-6900, Saudi Arabia
| | - TorOve Leiknes
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological & Environmental Science & Engineering Division (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Ho Kyong Shon
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Post Box 129, Broadway, NSW 2007, Australia.
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Zhu C, Li F, Zhang P, Ye J, Lu P, Wang H. Combined sludge conditioning with NaCl-cationic polyacrylamide-rice husk powders to improve sludge dewaterability. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.05.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Maqbool T, Cho J, Hur J. Changes in spectroscopic signatures in soluble microbial products of activated sludge under different osmotic stress conditions. BIORESOURCE TECHNOLOGY 2018; 255:29-38. [PMID: 29414170 DOI: 10.1016/j.biortech.2018.01.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 06/08/2023]
Abstract
Spectroscopic techniques were used to examine the subtle changes in soluble microbial products (SMP) of batch activated sludge bioreactors working at different salinities (i.e., 0%, 1%, 3%, and 5% NaCl). The changes in different fluorescent constituent were tracked by excitation-emission matrix combined with parallel factor analysis (EEM-PARAFAC), and the sequential production was further identified by two-dimensional correlation spectroscopy (2D-COS). Greater enrichment of tryptophan-like component and large-sized biopolymer were found in SMP for higher saline bioreactors, suggesting the SMP sources from bound extracellular polymeric substances and excreted intercellular constituents. 2D-COS revealed the opposite sequences of the fluorescence changes in SMP between the low and the high saline bioreactors, following the order of "tyrosine-like > tryptophan-like > humic-like fluorescence" for the latter. This study clarified the dominant mechanisms involved in SMP formation during elevating salinity, which were well supported by the changes in SMP spectroscopic features, microbial activity, and organic degradation rates.
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Affiliation(s)
- Tahir Maqbool
- Department of Environment and Energy, Sejong University, Seoul 05006, South Korea
| | - Jinwoo Cho
- Department of Environment and Energy, Sejong University, Seoul 05006, South Korea
| | - Jin Hur
- Department of Environment and Energy, Sejong University, Seoul 05006, South Korea.
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Novel low-fouling membranes from lab to pilot application in textile wastewater treatment. J Colloid Interface Sci 2018; 515:208-220. [DOI: 10.1016/j.jcis.2018.01.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/22/2017] [Accepted: 01/03/2018] [Indexed: 02/06/2023]
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Siddique MS, Khan SJ, Shahzad MA, Nawaz MS, Hankins NP. Insight into the effect of organic and inorganic draw solutes on the flux stability and sludge characteristics in the osmotic membrane bioreactor. BIORESOURCE TECHNOLOGY 2018; 249:758-766. [PMID: 29136930 DOI: 10.1016/j.biortech.2017.10.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/14/2017] [Accepted: 10/18/2017] [Indexed: 06/07/2023]
Abstract
In this study, chloride based (CaCl2 and MgCl2) and acetate based (NaOAc and MgOAc) salts in comparison with NaCl were investigated as draw solutions (DS) to evaluate their viability in the osmotic membrane bioreactor (OMBR). Membrane distillation was coupled with an OMBR setup to develop a hybrid OMBR-MD system, for the production of clean water and DS recovery. Results demonstrate that organic DS were able to mitigate the salinity buildup in the bioreactor as compared to inorganic salts. Prolonged filtration runs were observed with MgCl2 and MgOAc in contrast with other draw solutes at the same molar concentration. Significant membrane fouling was observed with NaOAc while rapid flux decline due to increased salinity build-up was witnessed with NaCl and CaCl2. Improved characteristics of mixed liquor in terms of sludge filterability, particle size, and biomass growth along with the degradation of soluble microbial products (SMP) were found with organic DS.
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Affiliation(s)
- Muhammad Saboor Siddique
- Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
| | - Sher Jamal Khan
- Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan.
| | - Muhammad Aamir Shahzad
- Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan
| | | | - Nicholas P Hankins
- Department of Engineering Science, The University of Oxford, Parks Road, Oxford OX1 3PJ, UK
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Mancini G, Panzica M, Fino D, Cappello S, Yakimov MM, Luciano A. Feasibility of treating emulsified oily and salty wastewaters through coagulation and bio-regenerated GAC filtration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 203:817-824. [PMID: 27449961 DOI: 10.1016/j.jenvman.2016.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 07/01/2016] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
In the present study, chemical oxygen demand (COD) removal by coagulation and packed-columns of both fresh and bioregenerated granular activated carbon (GAC) is reported as a feasible treatment for saline and oily wastewaters (slops) generated from marine oil tankers cleaning. The use of Ferric chloride (FeCl3), Aluminium sulphate (Al2(SO4)3) and Polyaluminum chloride (Al2(OH3)Cl3) was evaluated in the pre-treatment by coagulation of a real slop, after a de-oiling phase in a tank skimmer Comparison of coagulation process indicated that Polyaluminum chloride and Aluminium sulphate operate equally well (20-30% of COD removal) when applied at their optimal dose (40 and 90 mg/l respectively) but the latter should be preferred in order to significantly control the sludge production. The results from the column filtration tests indicated the feasibility of using the selected GAC (Filtrasorb 400 -Calgon Carbon Corporation) to achieve the respect of the discharge limits in the slops treatment with a carbon usage rate in the range 0.1-0.3 kg/m3 of treated effluent. Moreover, biological regeneration through Alcalinovorax borkumensis SK2 was proved to be a cost-effective procedure since the reuse of spent GAC through such regeneration process for further treatment could still achieve approximately 90% of the initial sorption capacity, reducing then costs for the use of new sorbents and also the need for waste disposal.
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Affiliation(s)
- Giuseppe Mancini
- Department of Industrial and Mechanical Engineering, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy.
| | - Michele Panzica
- Department of Industrial and Mechanical Engineering, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy.
| | - Debora Fino
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
| | - Simone Cappello
- Institute for Coastal Marine Environment (IAMC) - CNR U.O.S. of Messina, Spianata San Raineri 86, 98121 Messina, Italy.
| | - Michail M Yakimov
- Institute for Coastal Marine Environment (IAMC) - CNR U.O.S. of Messina, Spianata San Raineri 86, 98121 Messina, Italy.
| | - Antonella Luciano
- ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Casaccia Research Center, Via Anguillarese 301, Rome, Italy.
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46
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Biological treatment of hypersaline wastewater from table olive processing: Process performance and protist population under different operating conditions. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Osman O, Aina OD, Ahmad F. Chemical fingerprinting of saline water intrusion into sewage lines. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 76:2044-2050. [PMID: 29068334 DOI: 10.2166/wst.2017.374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
High salinity in sewage sludge can affect not only the operation of wastewater treatment plants (WWTPs) but also the quality of treated water generated, thereby limiting its downstream reuse. Using data on geochemical parameters, both for the central WWTP in Abu Dhabi, UAE, and literature values for potential regional saline water sources (e.g., shallow groundwater and regional Arabian Gulf seawater), a variety of chemical fingerprinting diagnostic ratios were calculated and plotted in order to determine the source of salinity in the municipal sewage. Data were compared with data from a regional WWTP that was not impacted by salinity. Monitoring data demonstrated persistently elevated levels of salinity in the municipal wastewater arriving at the central WWTP from the city. Dilution/concentration analysis using a conductivity vs. chloride plot showed both potential sources, i.e. Arabian Gulf seawater and coastal hypersaline groundwater, as feasible sources of wastewater salinization. Further diagnostic analysis using a Panno Plot indicated that coastal groundwater was the only likely source of salinization of municipal sewage. Additional confirmation of the identity of the source and the extent of mixing using different lines of evidence like stable isotope ratios is recommended for future study.
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Affiliation(s)
- Ola Osman
- BioEnergy and Environmental Laboratory (BEEL), Institute Center for Water and Environment (iWATER), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE E-mail:
| | - Oluwajinmi Daniel Aina
- Drinking Water Research Group, Department of Civil Engineering, University of Toronto, Toronto, Canada M5S1A4
| | - Farrukh Ahmad
- BioEnergy and Environmental Laboratory (BEEL), Institute Center for Water and Environment (iWATER), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE E-mail:
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Shi Y, Huang J, Zeng G, Gu Y, Chen Y, Hu Y, Tang B, Zhou J, Yang Y, Shi L. Exploiting extracellular polymeric substances (EPS) controlling strategies for performance enhancement of biological wastewater treatments: An overview. CHEMOSPHERE 2017; 180:396-411. [PMID: 28419953 DOI: 10.1016/j.chemosphere.2017.04.042] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/02/2017] [Accepted: 04/10/2017] [Indexed: 06/07/2023]
Abstract
Extracellular polymeric substances (EPS) are present both outside of the cells and in the interior of microbial aggregates, and account for a main component in microbial aggregates. EPS can influence the properties and functions of microbial aggregates in biological wastewater treatment systems, and specifically EPS are involved in biofilm formation and stability, sludge behaviors as well as sequencing batch reactors (SBRs) granulation whereas they are also responsible for membrane fouling in membrane bioreactors (MBRs). EPS exhibit dual roles in biological wastewater treatments, and hence the control of available EPS can be expected to lead to changes in microbial aggregate properties, thereby improving system performance. In this review, current updated knowledge with regard to EPS basics including their formation mechanisms, important properties, key component functions as well as sub-fraction differentiation is given. EPS roles in biological wastewater treatments are also briefly summarized. Special emphasis is laid on EPS controlling strategies which would have the great potential in promoting microbial aggregates performance and in alleviating membrane fouling, including limitation strategies (inhibition of quorum sensing (QS) systems, regulation of environmental conditions, enzymatic degradation of key components, energy uncoupling etc.) and elevation strategies (enhancement of QS systems, addition of exogenous agents etc.). Those strategies have been confirmed to be feasible and promising to enhance system performance, and they would be a research niche that deserves further study.
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Affiliation(s)
- Yahui Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Yanling Gu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Yaoning Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Yi Hu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Bi Tang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Jianxin Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Ying Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Lixiu Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
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Abstract
The aim of the present work was to investigate the behavior of a membrane bioreactor (MBR) system for the treatment of oily wastewater. A bench scale MBR was fed with synthetic wastewater containing diesel fuel. Organic carbon, hydrocarbon and ammonium removal, kinetic constants, extracellular polymeric substances production, and membrane fouling rates were monitored. The MBR plant was operated for more than 200 days, and the results highlighted good carbon removal and nitrification, suggesting a sort of biomass adaptation to hydrocarbons. Membrane fouling analysis showed an increase in total resistance, likely due to hydrocarbons, which caused an irreversible fouling (pore blocking) mainly due to oil deposition.
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50
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Acosta-Rubí S, Campocosio AT, Montes-Horcasitas MDC, Quintanar-Vera L, Esparza-García F, Rodríguez-Vázquez R. Production of a halotolerant biofilm from green coffee beans immobilized on loofah fiber (Luffa cylindrica) and its effect on phenanthrene degradation in seawater. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2017; 52:632-640. [PMID: 28301290 DOI: 10.1080/10934529.2017.1294965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A biofilm developed from low quality green coffee beans was tested for its capacity to degrade the polynuclear aromatic hydrocarbon (PAH), phenanthrene (Phe), in seawater. Microorganisms were immobilized on two types of Luffa cylindrica (with three and four placental cavities), and the effects of moisture content (20, 30 and 40% of water holding capacity) and particle size (<0.42 mm, 0.42-0.86 mm and 0.86-2.0 mm) of green coffee beans on microbial activity were considered. Biofilm growth determined by respirometry showed a highest microbial activity at a moisture content of 40% and particle size of 0.42-0.86 mm. The loofah fiber with three placental cavities showed the highest adherence of microorganisms. The kinetics of microbial growth in both seawater and distilled water and the scanning electron microscopies indicated that the microorganisms associated with green coffee beans are halotolerant. In fact, I-GCB-SW-G biofilm degraded 67.56% of Phe (50 mg L-1) in seawater, at a significantly higher rate than in distilled water (I-GCB-DW-W).
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Affiliation(s)
- Sonia Acosta-Rubí
- a Department of Biotechnology and Bioengineering , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , Mexico City , Mexico
| | | | - María Del Carmen Montes-Horcasitas
- a Department of Biotechnology and Bioengineering , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , Mexico City , Mexico
| | - Liliana Quintanar-Vera
- c Department of Chemistry , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , Mexico City , Mexico
| | - Fernando Esparza-García
- a Department of Biotechnology and Bioengineering , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , Mexico City , Mexico
| | - Refugio Rodríguez-Vázquez
- a Department of Biotechnology and Bioengineering , Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional , Mexico City , Mexico
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