1
|
Ayach J, Duma L, Badran A, Hijazi A, Martinez A, Bechelany M, Baydoun E, Hamad H. Enhancing Wastewater Depollution: Sustainable Biosorption Using Chemically Modified Chitosan Derivatives for Efficient Removal of Heavy Metals and Dyes. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2724. [PMID: 38893988 PMCID: PMC11173971 DOI: 10.3390/ma17112724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/10/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024]
Abstract
Driven by concerns over polluted industrial wastewater, particularly heavy metals and dyes, this study explores biosorption using chemically cross-link chitosan derivatives as a sustainable and cost-effective depollution method. Chitosan cross-linking employs either water-soluble polymers and agents like glutaraldehyde or copolymerization of hydrophilic monomers with a cross-linker. Chemical cross-linking of polymers has emerged as a promising approach to enhance the wet-strength properties of materials. The chitosan thus extracted, as powder or gel, was used to adsorb heavy metals (lead (Pb2+) and copper (Cu2+)) and dyes (methylene blue (MB) and crystal violet (CV)). Extensive analysis of the physicochemical properties of both the powder and hydrogel adsorbents was conducted using a range of analytical techniques, including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and scanning electron microscopy (SEM), as well as 1H and 13C nuclear magnetic resonance (NMR). To gain a comprehensive understanding of the sorption process, the effect of contact time, pH, concentration, and temperature was investigated. The adsorption capacity of chitosan powder for Cu(II), Pb(II), methylene blue (MB), and crystal violet (CV) was subsequently determined as follows: 99, 75, 98, and 80%, respectively. In addition, the adsorption capacity of chitosan hydrogel for Cu(II), Pb(II), MB, and CV was as follows: 85, 95, 85, and 98%, respectively. The experimental data obtained were analyzed using the Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models. The isotherm study revealed that the adsorption equilibrium is well fitted to the Freundlich isotherm (R2 = 0.998), and the sorption capacity of both chitosan powder and hydrogel was found to be exceptionally high (approximately 98%) with the adsorbent favoring multilayer adsorption. Besides, Dubinin has given an indication that the sorption process was dominated by Van der Waals physical forces at all studied temperatures.
Collapse
Affiliation(s)
- Jana Ayach
- Research Platform for Environmental Science (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 657314, Lebanon; (J.A.); (A.H.); (H.H.)
- CNRS, ICMR UMR 7312, University of Reims Champagne-Ardenne, 51687 Reims, France;
| | - Luminita Duma
- CNRS, ICMR UMR 7312, University of Reims Champagne-Ardenne, 51687 Reims, France;
| | - Adnan Badran
- Department of Nutrition, University of Petra, Amman P.O Box 961343, Jordan;
| | - Akram Hijazi
- Research Platform for Environmental Science (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 657314, Lebanon; (J.A.); (A.H.); (H.H.)
| | - Agathe Martinez
- CNRS, ICMR UMR 7312, University of Reims Champagne-Ardenne, 51687 Reims, France;
| | - Mikhael Bechelany
- Institut Européen des Membranes (IEM), UMR-5635, University of Montpellier, Centre National de la Recherche Scientifique (CNRS), École Nationale Supérieure de Chimie de Montpellier (ENSCM), Place Eugène Bataillon, 34095 Montpellier, France
- Functional Materials Group, Gulf University for Science and Technology (GUST), Mubarak Al-Abdullah 32093, Kuwait
| | - Elias Baydoun
- Department of Biology, American University of Beirut, Beirut P.O. Box 110236, Lebanon;
| | - Hussein Hamad
- Research Platform for Environmental Science (PRASE), Doctoral School of Science and Technology, Lebanese University, Beirut P.O. Box 657314, Lebanon; (J.A.); (A.H.); (H.H.)
| |
Collapse
|
2
|
Mattoso AP, Cunha S, Aguiar J, Duarte A, Lemos H. Valorization of Water Treatment Sludge for Applications in the Construction Industry: A Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1824. [PMID: 38673180 PMCID: PMC11051011 DOI: 10.3390/ma17081824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/08/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024]
Abstract
To address the growing global water demand, it is imperative to implement advanced treatment systems and sustainable alternatives for managing the large amount of waste generated during the water purification process, known as water treatment sludge (WTS). Worldwide, researchers and companies are exploring alternatives and methods for the valorization of WTS as a raw material in other processes. It is urgent that all productive sectors, which contribute significantly to greenhouse gas emissions, adopt this management principle to ensure more sustainable production, contributing to the global goal of climate neutrality. Notably, in civil construction, incorporating WTS as a supplementary cementitious material (SCM) shows great promise, considering that the industrial waste currently used for this purpose is increasingly restricted. The use of WTS as a raw material in the cement industry not only contributes to the reduction of the carbon footprint, but also reduces the high waste load still disposed of in landfills. The emerging applications for WTP sludge are reviewed, with emphasis on its valorization in the civil construction as an SCM. The main characteristics of this waste and their impacts on the environment are also addressed.
Collapse
Affiliation(s)
- Ana Paula Mattoso
- CTAC—Centre for Territory, Environment and Construction, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.P.M.); (S.C.); (A.D.)
| | - Sandra Cunha
- CTAC—Centre for Territory, Environment and Construction, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.P.M.); (S.C.); (A.D.)
| | - José Aguiar
- CTAC—Centre for Territory, Environment and Construction, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.P.M.); (S.C.); (A.D.)
| | - António Duarte
- CTAC—Centre for Territory, Environment and Construction, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal; (A.P.M.); (S.C.); (A.D.)
| | - Helena Lemos
- Águas do Norte, S.A., Dom Pedro de Castro, 5000-669 Vila Real, Portugal;
| |
Collapse
|
3
|
Chen J, Duan R, Zhu B, Sun Y, Gao J. The impact of recycling polyaluminium chloride and anionic polyacrylamide water treatment residuals on heavy metal adsorption in soils: implications for stormwater bioretention systems. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2024; 89:1570-1582. [PMID: 38557719 DOI: 10.2166/wst.2024.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 02/29/2024] [Indexed: 04/04/2024]
Abstract
Despite the high adsorption capacity of polyaluminum chloride and anionic polyacrylamide water treatment residuals (PAC-APAM WTRs) for Pb2+, Cd2+, Cu2+, and Zn2+, their influence on the adsorption behavior of heavy metals in traditional bioretention soil media remains unclear. This study investigated the impact of PAC-APAM WTRs at a 20% weight ratio on the adsorption removal of Pb2+, Cd2+, Cu2+, and Zn2+ in three types of soils. The results demonstrated improved heavy metal adsorption in the presence of PAC-APAM WTRs, with enhanced removal observed at higher pH levels and temperatures. The addition of PAC-APAM WTRs augmented the maximum adsorption capacity for Pb2+ (from 0.98 to 3.98%), Cd2+ (from 0.52 to 10.99%), Cu2+ (from 3.69 to 36.79%), and Zn2+ (from 2.63 to 13.46%). The Langmuir model better described the data in soils with and without PAC-APAM WTRs. The pseudo-second-order model more accurately described the adsorption process, revealing an irreversible chemical process, although qe demonstrated improvement with the addition of PAC-APAM WTRs. This study affirms the potential of PAC-APAM WTRs as an amendment for mitigating heavy metal pollution in stormwater bioretention systems. Further exploration of the engineering application of PAC-APAM WTRs, particularly in field conditions for the removal of dissolved heavy metals, is recommended.
Collapse
Affiliation(s)
- Jing Chen
- Department of Environmental Engineering, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province 030024, China
| | - Runbin Duan
- Department of Environmental Engineering, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province 030024, China E-mail:
| | - Bingzi Zhu
- Department of Environmental Engineering, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province 030024, China
| | - Yao Sun
- Department of Environmental Engineering, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province 030024, China
| | - Jiangqi Gao
- Department of Environmental Engineering, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province 030024, China
| |
Collapse
|
4
|
Na Nagara V, Sarkar D, Boufadel M, Datta R. Green engineered mulch for phosphorus and metal removal from stormwater runoff in bioretention systems. CHEMOSPHERE 2023; 331:138779. [PMID: 37116722 DOI: 10.1016/j.chemosphere.2023.138779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/23/2023] [Accepted: 04/23/2023] [Indexed: 05/19/2023]
Abstract
Phosphorus and metals in stormwater runoff are major causes of water quality degradation. Bioretention systems are increasingly implemented to improve stormwater quality and to better manage stormwater quantity. Many studies have focused on modifying the composition of the soil bed to improve pollutant removal. However, the pollutant removal performance of bioretention systems can diminish over time, such as when clogging of the media occurs. Sediment accumulation on the soil surface may inhibit infiltration into the soil bed, thus limiting pollutant removal. Soil replacement may be eventually required as pollutants accumulate in the soil. In this study, a green retrofit material, called green engineered mulch (GEM), was generated by coating regular wood mulch with aluminum-based water treatment residuals (WTR) via a simple and low-energy process (patent pending). The GEM was developed to serve as a green retrofit for bioretention systems to enhance the removal of phosphorus and metals from stormwater runoff. The GEM was placed in a rain garden in Secaucus, NJ, USA for 15 months, during which 12 storm events (ranging from 6.0 mm to 89.6 mm) were monitored. Runoff and infiltrate samples were analyzed for dissolved and total concentrations of phosphorus and metals, along with other key water quality parameters. The GEM significantly reduced (p < 0.05) the total concentrations of phosphorus and metals in stormwater infiltrate compared to the inlet, unlike the regular mulch. Minimal or no contact with the GEM resulted in no significant pollutant removal from surface runoff. No significant pollutant export from the GEM was observed. The spent GEM can be disposed of as non-hazardous waste in municipal landfills. This study demonstrates that the GEM is a safe and effective retrofit. Moreover, the GEM is a simple and economical retrofit solution that can be used in place of regular mulch in bioretention systems.
Collapse
Affiliation(s)
- Viravid Na Nagara
- Department of Civil, Environmental, and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Dibyendu Sarkar
- Department of Civil, Environmental, and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA.
| | - Michel Boufadel
- Center for Natural Resources, Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA
| | - Rupali Datta
- Department of Biological Sciences, Michigan Technological University, Houghton, MI, 49931, USA
| |
Collapse
|
5
|
Zhang K, Chang S, Zhang Q, Bai Y, Wang E, Zhang M, Fu Q, Wei L, Yu Y. Heavy metals in influent and effluent from 146 drinking water treatment plants across China: Occurrence, explanatory factors, probabilistic health risk, and removal efficiency. JOURNAL OF HAZARDOUS MATERIALS 2023; 450:131003. [PMID: 36857822 DOI: 10.1016/j.jhazmat.2023.131003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/01/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
Heavy metals (HMs) in drinking water have drawn worldwide attention due to their risks to public health; however, a systematic assessment of the occurrence of HMs in drinking water treatment plants (DWTPs) at a large geographical scale across China and the removal efficiency, human health risks, and the correlation with environmental factors have yet to be established. Therefore, this study characterised the occurrence patterns of nine conventional dissolved HMs in the influent and effluent water samples from 146 typical DWTPs in seven major river basins across China (which consist of the Yangtze River, the Yellow River, the Songhua River, the Pearl River, the Huaihe River, the Liaohe River and the Haihe River) for the first time and removal efficiency, probabilistic health risks, and the correlation with water quality. According to the findings, a total of eight HMs (beryllium (Be), antimony (Sb), barium (Ba), molybdenum (Mo), nickel (Ni), vanadium (V), cobalt (Co) and titanium (Ti)) were detected, with detection frequencies in influent and effluent water ranging from 2.90 (Mo) to 99.30% (Ba) and 1.40 (Ti) to 97.90% (Ba), respectively. The average concentration range was 0.41 (Be)- 77.36 (Sb) μg/L. Among them, Sb (exceeding standard rate 8%), Ba (2.89%), Ni (21.43%), and V (1.33%) were exceeded the national standard (GB5749-2022). By combining Spearman's results and redundancy analysis, our results revealed a close correlation among pH, turbidity (TURB), potassium permanganate index (CODMn), and total nitrogen (TN) along with the concentration and composition of HMs. In addition, the concentration of HMs in finished water was strongly affected by the concentration of HMs in raw water, as evidenced by the fact that HMs in surface water poses a risk to the quality of finished water. Metal concentration was the primary factor in assessing the health risk of a single metal, and the carcinogenic risk of Ba, Mo, Ni, and Sb should be paid attention to. In DWTPs, the removal efficiencies of various HMs also vary greatly, with an average removal rate ranging from 16.30% to 95.64%. In summary, our findings provide insights into the water quality and health risks caused by HMs in drinking water.
Collapse
Affiliation(s)
- Kunfeng Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Elite Engineers School, Harbin Institute of Technology, Harbin 150080, China; School of Forestry, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China.
| | - Sheng Chang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Qi Zhang
- School of Forestry, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China.
| | - Yunsong Bai
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Enrui Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Moli Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Qing Fu
- State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Research Centre of Lake Environment, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Liangliang Wei
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yanling Yu
- Elite Engineers School, Harbin Institute of Technology, Harbin 150080, China; School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China.
| |
Collapse
|
6
|
Efficient Adsorption of Tl(I) from Aqueous Solutions Using Al and Fe-Based Water Treatment Residuals. Processes (Basel) 2022. [DOI: 10.3390/pr10122700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Iron and aluminum water treatment residuals from a water supply plant were used as adsorbents for Tl(I) to treat thallium-containing Tl(I) wastewater and realize the resource utilization of water treatment residuals. The feasibility study results showed that Fe-WTR and Al-WTR reached adsorption equilibria within 120 min. The Langmuir model showed maximum adsorption capacities of Tl(I) on Fe-WTR and Al-WTR as 3.751 and 0.690 mg g−1 separately at an initial concentration of 5 mg L−1. The adsorption capacities of Fe-WTR and Al-WTR positively correlated with pH. The removal of Tl(I) using Fe-WTR exceeded Al-WTR; the adsorbed Tl(I) in Fe-WTR occurred primarily in the reduced state, while the Tl(I) adsorbed in Al-WTR was mainly in acid-extractable and reduced states. FTIR and XPS data showed that Tl(I) and Fe/Al-OH-functional groups formed stable surface complexes (Fe/Al-O-Tl) during adsorption, and there was no redox reaction. This confirmed that WTR is a highly efficient adsorbent for the stable removal of Tl(I), which provides a practical foundation for industrial application in Tl(I)-containing wastewater treatment.
Collapse
|
7
|
Briso A, Vega AS, Molinos-Senante M, Pastén P. Challenges and opportunities for drinking water treatment residuals (DWTRs) in metal-rich areas: an integrated approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:65599-65612. [PMID: 35488992 DOI: 10.1007/s11356-022-20262-6] [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: 11/24/2021] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
The physicochemistry and production rate of drinking water treatment residuals (DWTRs) depends on the raw water composition and the plant operational parameters. DWTRs usually contain Fe and/or Al oxyhydroxides, sand, clay, organic matter, and other compounds such as metal(oids), which are relevant in mining countries. This work proposes a simple approach to identify DWTRs reuse opportunities and threats, relevant for public policies in countries with diverse geochemical conditions. Raw water pollution indexes and compositions of DWTRs were estimated for Chile as a model case. About 23% of the raw drinking water sources had moderate or seriously contamination from high turbidity and metal(loid) pollution If the untapped reactivity of clean DWRTs was used to treat resources water in the same water company, the 73 and 64% of these companies would be able to treat water sources with As and Cu above the drinking water regulations, respectively. Integrating plant operational data and the hydrochemical characteristics of raw waters allows the prediction of DWTRs production, chemical composition, and reactivity, which is necessary to identify challenges and opportunities for DWTRs management.
Collapse
Affiliation(s)
- Alejandro Briso
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
- Centro de Desarrollo Urbano Sustentable (CEDEUS), El Comendador 1916, Providencia, Santiago, Chile
| | - Alejandra S Vega
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
- Centro de Desarrollo Urbano Sustentable (CEDEUS), El Comendador 1916, Providencia, Santiago, Chile
| | - María Molinos-Senante
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
- Centro de Desarrollo Urbano Sustentable (CEDEUS), El Comendador 1916, Providencia, Santiago, Chile
| | - Pablo Pastén
- Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile.
- Centro de Desarrollo Urbano Sustentable (CEDEUS), El Comendador 1916, Providencia, Santiago, Chile.
| |
Collapse
|
8
|
Duan R, Fedler CB. Competitive adsorption of Cu 2+, Pb 2+, Cd 2+, and Zn 2+ onto water treatment residuals: implications for mobility in stormwater bioretention systems. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:878-893. [PMID: 36358035 DOI: 10.2166/wst.2022.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The lack of knowledge regarding competitive adsorption of heavy metal ions onto water treatment residuals has been hindering their reuse as a medium in stormwater bioretention systems. Competitive adsorption of copper(II), lead(II), cadmium(II), and zinc(II) onto polyaluminium chloride and anionic polyacrylamide water treatment residuals (PAC-APAM WTRs) was evaluated with different pH, temperature, initial concentration, and time. The competitive adsorption removal increased with the increase of pH and temperature. The analysis of the ratios of maximum adsorption capacity of a heavy metal ionic species in a multi-component system to that in a mono-component system (Qmix/Qmono) demonstrated that the coexisting ion had a negative effect on the adsorption of a metal ionic species. The Langmuir model provided a better fit, indicating that the adsorption could be a monolayer adsorption process. The modified Langmuir isotherm studies showed that the affinity order in the multi-component systems was Cu2+>Pb2+>Cd2+>Zn2+. The pseudo-second-order model better described the adsorption kinetics implying that the competitive adsorption behavior could be interpreted by diffusion-based mechanisms. This study contributed to a better understanding the mobility of those frequently occurring heavy metal ions in stormwater runoff in the PAC-APAM WTRs media layer of stormwater bioretention systems.
Collapse
Affiliation(s)
- Runbin Duan
- Department of Environmental Engineering, College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China E-mail:
| | - Clifford B Fedler
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Lubbock, Texas 79409, USA
| |
Collapse
|
9
|
Wang M, Liu G, Wang X. Wastewater post-coagulation sludge recycled as a multifunctional adsorbent via pyrolysis enhanced in carbon dioxide (CO 2). CHEMOSPHERE 2022; 291:132964. [PMID: 34800502 DOI: 10.1016/j.chemosphere.2021.132964] [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: 08/16/2021] [Revised: 11/07/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Massive wastewater post-coagulation sludge (WPCS) generated from the tertiary treatment facilities has been regarded as an environmentally burdensome waste. Herein, to take advantage of the abundant amounts of Al/Fe (hydr)oxides, the WPCS was converted into functional char via pyrolysis under CO2 and N2 atmosphere. The higher organic matter content and porous structure of WPCS than drinking water treatment sludge made it a more suitable precursor for biochar and adsorbent production. CO2 expedited the thermolysis of the organics in WPCS and the Fe (hydr)oxides in WPCS further decreased the temperature of CO2-mediated reaction. Therefore, the corresponding products outcompeted the chars in N2, achieving ∼37% higher specific surface area, stronger aromaticity and more amorphous Al and Fe contents of 201.19 ± 2.25 and 27.03 ± 0.56 mg g-1, accompanied by more loss of surface functional groups like carboxyl and hydroxyl. Accordingly, WPCS chars under CO2 showed superior performance for removing phosphate (15.58 ± 0.19 mg g-1), along with the adsorption of heavy metal (37.17 ± 1.25 mg g-1 of Pb (II)) and dye (14.45 ± 0.11 mg g-1 of methylene blue). In sum, this study proposes a win-win strategy to convert coagulation sludges into resources and a new candidate for multifunctional adsorbent production.
Collapse
Affiliation(s)
- Mengyue Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Guoshuai Liu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China
| | - Xiuheng Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| |
Collapse
|
10
|
Zhang R, Lu J, Dopson M, Leiviskä T. Vanadium removal from mining ditch water using commercial iron products and ferric groundwater treatment residual-based materials. CHEMOSPHERE 2022; 286:131817. [PMID: 34426130 DOI: 10.1016/j.chemosphere.2021.131817] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 06/01/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Removal of vanadium from liquid waste streams protects the environment from toxic vanadium species and promotes the recovery of the valuable metal. In this study, real mining ditch water was sampled from a closed vanadium mine (V-Fe-Ti oxide deposit, Finland) and used in sorption experiments at prevailing vanadium concentration (4.66-6.85 mg/L) and pH conditions (7.02-7.83). The high concentration of vanadium in the water represents a potential health concern according to the initial risk assessment carried out in this study. Vanadium was efficiently removed using four different iron sorbents: ferric oxyhydroxide with some goethite (CFH-12), poorly crystallized akaganéite (GEH 101), ferric groundwater treatment residual (GWTR), and GWTR-modified peat (GWTR-Peat). Higher dosage (6 g/L with 24 h contact time) and longer contact time (72 h using 1 g/L dosage) resulted in removal efficiencies of higher than 85%. Kinetic data were well represented by the Elovich model while intra-particle diffusion and Boyd models suggested that the sorption process in a real water matrix was significantly controlled by both film diffusion and intra-particle diffusion. Column studies with CFH-12, GEH 101, and GWTR-Peat showed that the breakthrough started earlier with the mining ditch water compared to a synthetic vanadium solution (investigated only with CFH-12), whereas GEH 101 proved to have the best performance in column mode. The Thomas and Yoon-Nelson column models were found to agree with the experimental data fairly well with the 50% breakthrough time being close to the experimental value for all the studied sorbents.
Collapse
Affiliation(s)
- Ruichi Zhang
- Chemical Process Engineering, P.O. Box 4300, FIN-90014, University of Oulu, Oulu, Finland.
| | - Jinmei Lu
- Department of Technology and Safety, UiT-The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Mark Dopson
- Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, 39182, Kalmar, Sweden.
| | - Tiina Leiviskä
- Chemical Process Engineering, P.O. Box 4300, FIN-90014, University of Oulu, Oulu, Finland.
| |
Collapse
|
11
|
Zhou L, Wallace SM, Kroll KJ, Denslow ND, Gaillard JF, Meyer P, Bonzongo JCJ. Acute and Chronic Toxicity Testing of Drinking Water Treatment Residuals in Freshwater Systems. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:2005-2014. [PMID: 33818832 DOI: 10.1002/etc.5061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/08/2020] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
The beneficial use of drinking water treatment residuals (DWTRs) faces barriers due primarily to uncertainties and concerns about their potential environmental impacts. We used total and water leachable toxic metal concentrations and 2 benthic organism-based bioassays to identify suitable DWTR substrates for introduction to freshwater systems. Using total metal contents and the consensus probable effect concentration concept, 3 DWTRs were selected and used in elutriate and toxicity studies. The concentrations of water leachable Ag, As, Cd, Cu, Cr, Ni, Pb, and Zn were below the US Environmental Protection Agency's ambient water quality criteria. Using the long-term 65-d life cycle Chironomus tentans test and 4 different endpoints (survival, adult emergence, egg case production, and number of eggs produced per female), no statistical differences were found between the DWTR treatments and the controls. Similarly, results obtained using the 10-d Hyalella azteca test showed no toxicity. However, although both survival and growth were recorded in all bioassays, the results of the 10-d C. tentans and the 28-d H. azteca tests were ambiguous. For C. tentans, 2 of the 3 DWTRs resulted in significantly lower survival rates compared to the controls. For H. azteca, no significant growth differences were observed between controls and DWTR treatments, but 2 of the 3 DWTRs resulted in significantly lower survival rates than the controls. Overall, these results suggest that certain DWTR substrates could be suitable for introduction to aquatic systems. Environ Toxicol Chem 2021;40:2005-2014. © 2021 SETAC.
Collapse
Affiliation(s)
- Lang Zhou
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, USA
| | - Samuel M Wallace
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois, USA
| | - Kevin J Kroll
- Department of Physiological Sciences and Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, Florida, USA
| | - Nancy D Denslow
- Department of Physiological Sciences and Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, Florida, USA
| | - Jean-François Gaillard
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois, USA
| | | | - Jean-Claude J Bonzongo
- Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, USA
| |
Collapse
|
12
|
Zhou L, Wallace SM, Denslow ND, Gaillard JF, Meyer P, Bonzongo JCJ. A Screening Approach for the Selection of Drinking Water Treatment Residuals for Their Introduction to Marine Systems. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:1194-1203. [PMID: 33270295 DOI: 10.1002/etc.4950] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/08/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
Drinking water treatment residuals (DWTRs) produced in large quantities worldwide show strong sorption capacities for several contaminants including metals. These by-products of the water-treatment process are primarily discharged as wastes, to either natural or engineered systems, based on the regulations in place in the country where they are produced. To assess how DWTRs can be repurposed to limit the mobility of metals in aquatic systems, we tested their propensity to release toxic metals and their potential ecotoxicity. To account for the wide variability in their physicochemical characteristics, DWTR samples were obtained from 15 water-treatment plants across the United States. A screening procedure based on a combination of 1) the toxicity characteristics leaching procedure (TCLP), 2) total metal contents and sediment quality guidelines, and 3) acute 10-d Americamysis bahia and chronic 28-d Neanthes arenaceodentata survival and growth bioassays was used. All tested samples were found to be nonhazardous based on TCLP results. However, the concentrations of As, Cu, and Ni exceeded the sediment quality guidelines in some samples, resulting in the exclusion of 7 DWTR samples. All of the DWTRs evaluated for toxicity were nontoxic to the tested organisms. The results of the present study suggest that certain DWTRs can be introduced safely into the marine environment and, therefore, used as potential amendments or capping materials to control the mobility of certain sediment contaminants. Environ Toxicol Chem 2021;40:1194-1203. © 2020 SETAC.
Collapse
Affiliation(s)
- Lang Zhou
- Engineering School of Sustainable Infrastructure and Environment and Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, USA
| | - Samuel M Wallace
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois, USA
| | - Nancy D Denslow
- Departments of Physiological Sciences and of Biochemistry and Molecular Biology and Center for Environmental and Human Toxicology, University of Florida, Gainesville, Florida, USA
| | - Jean-François Gaillard
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois, USA
| | | | - Jean-Claude J Bonzongo
- Engineering School of Sustainable Infrastructure and Environment and Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, USA
| |
Collapse
|
13
|
Wang M, Bai S, Wang X. Enhanced removal of heavy metals and phosphate in stormwater filtration systems amended with drinking water treatment residual-based granules. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 280:111645. [PMID: 33246755 DOI: 10.1016/j.jenvman.2020.111645] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 10/14/2020] [Accepted: 10/22/2020] [Indexed: 06/12/2023]
Abstract
To address the clogging issues in stormwater filtration systems, a drinking water treatment residual (DWTR)-based granule (DBG) substrate was developed herein by pyrolyzing and granulating the DWTR with bentonite and corncob. Toxicity characteristic leaching procedure studies indicated that fabricating into DBG stabilized the Al and heavy metals in DWTR and restrained the leaching risk. Then the removal performance of phosphate (PO₄-P) and heavy metal ions by the DWTR and DBG was evaluated in batch and laboratory-scale column experiments. Results from batch tests showed that the amount of Pb(Ⅱ) adsorbed by DBG (18.47 ± 0.56 mg g⁻1) was approximately 2.3 times of that adsorbed by DWTR (8.05 ± 0.19 mg g⁻1), whereas the PO₄-P adsorption capacity of DBG (8.63 ± 0.24 mg g⁻1) was much lower than that of DWTR (25.33 ± 0.81 mg g⁻1). This could be ascribed to the addition of corncob and bentonite (at a mass ratio of 20% and 40% in DBG, respectively), which provided extremely high cation exchange capacity for the Pb(Ⅱ) adsorption, while no effective PO₄-P adsorption component was involved. Moreover, the pyrolysis process could improve the Pb(Ⅱ) and PO₄-P adsorption capacity of the raw-mixture by 42% and 7%, whereas granulation process decreased those of the pyrolysis-mixture by 15% and 20%, respectively, owing to the reduction of accessible surface area in the DBG. Under various stormwater runoff conditions, the involvement of DBG in stormwater filtration systems exerted consistently fancy performance of Cu(Ⅱ), Pb(Ⅱ), Cd(Ⅱ) and PO₄-P removal, with average removal rates of over 86.20% and desorption rates of less than 3.50%, indicating irreversible and strong complexion between the contaminants and DBG. The DBG column manifested good permeability and stable hydraulic conductivity (2.74-2.52 m d⁻1) over a 54-day rainfall period, which was beneficial to address the clogging issue of DWTR. Overall, this study provides an alternative pathway to enhance the hydraulic condition and treatment performance of the stormwater filtration systems for urban runoff management.
Collapse
Affiliation(s)
- Mengyue Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Shunwen Bai
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Xiuheng Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China.
| |
Collapse
|
14
|
Finlay NC, Peacock CL, Hudson-Edwards KA, Johnson KL. Characteristics and mechanisms of Pb(II) sorption onto Fe-rich waste water treatment residue (WTR): A potential sustainable Pb immobilisation technology for soils. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123433. [PMID: 32683153 DOI: 10.1016/j.jhazmat.2020.123433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/12/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Pb contamination of soils is a global problem. This paper discusses the ability of an Fe-rich waste, water treatment residual (WTR), to adsorb Pb(II). This was investigated using batch sorption experiments, X-ray diffraction, electron microprobe microanalysis, PHREEQC modeling and Extended X-ray Absorption Fine Structure (EXAFS) analysis. The WTR is composed of approximately 23 wt. % natural organic matter (NOM), 70 wt. % ferrihydrite and <10 wt. % silicate material. Pb(II) sorption to WTR was dependent on initial Pb(II) load, particle size, time and pH, but not on ionic strength. EXAFS analysis at the Pb LIII-edge confirmed that Pb(II) sorbed to WTR by co-existing bidentate edge-sharing and monodentate or corner-sharing complexes, with 2 O at ∼2.31-2.34 Å, 1 Fe at ∼3.32-3.34 Å, 2 Fe at ∼3.97-3.99 Å and 1 Pb at ∼3.82-3.85 Å. Linear combination showed that the Pb(II)-sorbed spectra were best fit with a ∼0.9 ± 0.1 and 0.1 ± 0.1 contribution from Pb(II)-sorbed ferrihydrite and Pb(II)-sorbed humic acid end members, respectively. Overall, we show that Pb(II) sorbs via strong inner-sphere complexation of Pb(II) to the ferrihydrite component of the WTR, which itself is stable over a wide pH range. Therefore, we suggest that Fe-rich WTR wastes could be used as effective adsorbents in Pb(II)-contaminated soils to help ensure sustainable terrestrial ecosystems.
Collapse
Affiliation(s)
- Nina C Finlay
- Department of Engineering, Durham University, Durham DH1 3LE, UK
| | | | - Karen A Hudson-Edwards
- Environment & Sustainability Institute and Camborne School of Mines, University of Exeter, Penryn, Cornwall, TR10 9FE, UK.
| | - Karen L Johnson
- Department of Engineering, Durham University, Durham DH1 3LE, UK
| |
Collapse
|
15
|
Zubrytė E, Gefenienė A, Kaušpėdienė D, Ragauskas R, Binkienė R, Selskienė A, Pakštas V. Fast removal of Pb(II) and Cu(II) from contaminated water by groundwater treatment waste: impact of sorbent composition. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1655455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Edita Zubrytė
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
| | - Audronė Gefenienė
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
- Education Academy, Vytautas Magnus University, Kaunas, Lithuania
| | - Danutė Kaušpėdienė
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
| | - Romas Ragauskas
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
| | - Rima Binkienė
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
| | - Aušra Selskienė
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
| | - Vidas Pakštas
- Department of Chemical Technology, Center for Physical Sciences and Technologies, Vilnius, Lithuania
| |
Collapse
|
16
|
Yuan N, Pei Y, Bao A, Wang C. The Physiological and Biochemical Responses of Daphnia magna to Dewatered Drinking Water Treatment Residue. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165863. [PMID: 32823506 PMCID: PMC7460191 DOI: 10.3390/ijerph17165863] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 02/05/2023]
Abstract
There have been widespread attempts to recycle drinking water treatment residue (DWTR) after dewatering for environmental remediation, which is beneficial for both the environment and the economy. The directly discharged DWTR without dewatering to natural water bodies, however, was reported to show signs of chronic toxicity to Daphnia magna (D. magna), a typical zooplankton in the aquatic environment. This study comprehensively assessed the effect of dewatered DWTR on the physiological and biochemical characteristics of D. magna based on acute and chronic toxicity tests. The results showed that the survival, growth, reproduction, body morphology of offspring, and the antioxidant enzymes of D. magna were not affected by the dewatered DWTR. These physiological and biochemical indexes also had no undesirable changes for the DWTR-amended sediments (with ratios of 0–50%) incubated for 10 and 180 d; the growth and reproduction were even promoted when D. magna was exposed to 5000 mg-sediment L−1, which may be due to the extra nutrients supplied by the amended sediments for the animals. The results demonstrated that by contrast with the directly discharged DWTR without dewatering, the dewatered DWTR could be safe to D. magna. Further analysis suggested that heavy metals (Pb, Ni, Cu, Cr, and Zn) with relatively low concentrations and high stability could be the main reasons leading to the high safety of the dewatered DWTR. Overall, dewatered DWTR can be considered a non-hazardous material for zooplankton.
Collapse
Affiliation(s)
- Nannan Yuan
- Electronic Information Technology School, Nanjing Vocational College of Information Technology, Nanjing 210023, China; (N.Y.); (A.B.)
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
- State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;
| | - Yuansheng Pei
- State Key Laboratory of Water Environment Simulation, Key Laboratory for Water and Sediment Sciences of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China;
| | - Anping Bao
- Electronic Information Technology School, Nanjing Vocational College of Information Technology, Nanjing 210023, China; (N.Y.); (A.B.)
| | - Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
- Correspondence: ; Tel.: +86-025-8688-2210
| |
Collapse
|
17
|
Martemianov D, Plotnikov E, Rudmin M, Tyabayev A, Artamonov A, Kundu P. Studying glauconite of the bakchar deposit (Western Siberia) as a prospective sorbent for heavy metals. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2020; 55:1359-1365. [PMID: 32720573 DOI: 10.1080/10934529.2020.1794686] [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: 11/21/2019] [Revised: 06/28/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
Glauconite is one of natural clay minerals that are low-cost and readily available. Its specific characters, including potassium cations activity, layered structure and absorption capacity, explain the comprehensive interest to this mineral. It is especially prospective in regard of water treatment. Glauconite composition depends on the formation conditions, which lead to different sorption properties. Here we studied the sorption parameters and physical characteristic of unique glauconite of the Bakchar deposit by mean of granulometric analysis, electromagnetic separation, X-ray fluorescence analysis, inductively coupled plasma-mass spectroscopy, petrographic studies, scanning electron microscopy, X-ray diffraction analysis, nitrogen thermal desorption method, inversion voltammetry. Finally, we tested this mineral as a sorbent. The studied glauconitic concentrate has the best comparative sorption properties. Results show that glauconite of the Bakchar deposit is a cheap and prospective sorbent for heavy metals.
Collapse
Affiliation(s)
- Dmitrii Martemianov
- School of Advanced Manufacturing Technologies, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - Evgenii Plotnikov
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - Maxim Rudmin
- School of Earth Sciences & Engineering, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - Andrey Tyabayev
- School of Core Engineering Education, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - Anton Artamonov
- Research Institute for Space Medicine, Federal Research Clinical Centre of Federal Biomedical Agency of Russia, Moscow, Russia
- Laboratory of Water Physical and Chemical properties, Institute of water, Moscow, Russia
| | - Partha Kundu
- Environmental Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, India
| |
Collapse
|
18
|
Li T, Duan Z, Qin R, Xu X, Li B, Liu Y, Jiang M, Zhan F, He Y. Enhanced characteristics and mechanism of Cu(II) removal from aqueous solutions in electrocatalytic internal micro-electrolysis fluidized-bed. CHEMOSPHERE 2020; 250:126225. [PMID: 32114338 DOI: 10.1016/j.chemosphere.2020.126225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 06/10/2023]
Abstract
For the purification of heavy metal wastewater, internal micro-electrolysis (IME) was considered as an effective method but some disadvantage greatly restricts its application. Electrocatalytic internal micro-electrolysis (ECIME) fluidized bed using iron-carbon particles was proposed to avoid disadvantaging of IME. The principal aim of this study was to investigate the enhanced removal characteristics, mechanism, and kinetic behavior of Cu(II) that none clear before. ECIME reactor shows a better copper removal performance and depends much on the polarization of the external electric field (EEF). Both the reaction rate and removal efficiency of copper electrodeposition improved obviously. Noteworthy is more than 88.0% of Cu(II) in aqueous solutions was removed by enhanced electrodeposition, and only about 10.0% of Cu(II) was absorbed and flocculated through the in situ formed iron hydroxyl compounds. Through scanning electron microscopy (SEM) and electrochemical analysis, copper can effectively electrodeposition on the surface of iron-carbon particles in ECIME reactor and accordingly the enhanced mechanisms were proposed. 1) Iron-carbon particles of ECIME formation of microelectrodes with high surface potential, larger specific area, and active sites through electrode collision and repolarization. 2) Copper electrodeposition on the formed microelectrodes exhibited greater reduction peak potential, reaction overpotential and exchange current density, which influenced by the polarization voltage significantly. 3) The electrocatalytic environment tend to in situ generate iron polymer hydroxyl compounds help to further remove residual Cu(II). ECIME fluidized-bed has promised potential for heavy metal containing wastewater purification and metal recovery. In addition, the proposed reaction models will be useful for field application.
Collapse
Affiliation(s)
- Tianguo Li
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, PR China; Faculty of Environmental Science and Technology, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Zhengyang Duan
- Department of Geography and Tourism Management, Chuxiong Normal University, Chuxiong, 675000, PR China
| | - Ronggao Qin
- Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China.
| | - Xiaojun Xu
- Faculty of Environmental Science and Technology, Kunming University of Science and Technology, Kunming, 650500, PR China
| | - Bo Li
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, PR China
| | - Yue Liu
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, PR China
| | - Ming Jiang
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, PR China.
| | - Fangdong Zhan
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, PR China
| | - Yongmei He
- College of Resources and Environment, Yunnan Agricultural University, Kunming, 650201, PR China
| |
Collapse
|
19
|
Garau M, Garau G, Diquattro S, Roggero PP, Castaldi P. Mobility, bioaccessibility and toxicity of potentially toxic elements in a contaminated soil treated with municipal solid waste compost. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 186:109766. [PMID: 31605957 DOI: 10.1016/j.ecoenv.2019.109766] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/03/2019] [Accepted: 10/04/2019] [Indexed: 05/04/2023]
Abstract
The aim of this study was to assess the influence of a municipal solid waste compost (MSWC) on the mobility, bioaccessibility and toxicity of several potentially toxic elements (PTE), i.e. Pb (15,383 mg kg-1), Zn (4076 mg kg-1), Cu (181 mg kg-1), Sb (109 mg kg-1), Cd (67 mg kg-1) and As (49 mg kg-1), present in a contaminated sub-acidic soil (pH = 5.93). The addition of MSWC at 2 and 4% rates significantly decreased the labile fractions of PTE (with the exception of Cu and As) and at the same time increased the residual fractions of Zn and Sb. In-vitro tests also showed that compost amendment was able to decrease Cd and Cu gastric bioaccessibility, with respect to untreated soil (-19 and 13% of Cd and Cu in MSWC-4% respectively), while a significant increase of As intestinal bioaccessibility was recorded. This increment was attributed to the pH rise (up to 7.0) during the in-vitro intestinal phase, which likely favoured a release of the arsenic non-specifically bonded to MSWC. Soil enzyme activities, i.e. dehydrogenase and β-glucosidase, were significantly enhanced in MSWC-amended soils (i.e. up to ~6.0 and 1.4 times higher in MSWC-4% than in control soil, respectively), as well as soil basal respiration, and the potential metabolic activity and catabolic versatility of soil microbial communities (as assessed by the Biolog ecoplate community level physiological profile). Overall, the results obtained suggested that MSWC, particularly at 4% rate, could be useful to stabilise PTE in sub-acidic contaminated soils and to increase the microbial activity and functionality in these latter soils.
Collapse
Affiliation(s)
- Matteo Garau
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Giovanni Garau
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100, Sassari, Italy.
| | - Stefania Diquattro
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Pier Paolo Roggero
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100, Sassari, Italy; Nucleo di Ricerca sulla Desertificazione, University of Sassari, viale Italia 39, 07100, Sassari, Italy
| | - Paola Castaldi
- Dipartimento di Chimica Farmacia, University of Sassari, Via Vienna 2, 07100, Sassari, Italy.
| |
Collapse
|
20
|
Ostrom TK, Davis AP. Evaluation of an enhanced treatment media and permeable pavement base to remove stormwater nitrogen, phosphorus, and metals under simulated rainfall. WATER RESEARCH 2019; 166:115071. [PMID: 31526979 DOI: 10.1016/j.watres.2019.115071] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 09/05/2019] [Accepted: 09/07/2019] [Indexed: 06/10/2023]
Abstract
An enhanced stormwater treatment media, developed previously by the authors, was shown to effectively retain dissolved phosphorus (DP) and total Cu and Zn under simulated rainfall. The media comprises expanded shale aggregate, aluminum-based water treatment residual (WTR), and a psyllium-based binder. A 5-cm layer of media was installed as a permeable pavement base layer in a laboratory mesocosm and subjected to rainfall simulations using synthetic stormwater. At rainfall intensity of 0.66 cm/h, effluent DP event mean concentration (EMC) fell from an average of 0.22 mg/L P to below the EPA water quality criterion of 0.037 mg/L in 8 of 9 storms. DP retention increased at lower rainfall intensity and lower pH. Effluent EMC was lowered to less than 30 μg/L for total Cu and less than 92 μg/L for total Zn, on average, relative to average influent EMCs above 61 and 255 μg/L for total Cu and Zn, respectively. Effluent total Al EMCs were below the 25 μg/L detection limit for all storm simulations, indicating Al leaching from the WTR-containing media not to be an issue. Inclusion of an internal water storage (IWS) zone resulted in a 33% total nitrogen (TN) load reduction when adequate carbon was present to advance denitrification. This study provides an evaluation and demonstrates expected treatment performance of a novel stormwater treatment media under conditions representative of urban stormwater.
Collapse
Affiliation(s)
- Travis K Ostrom
- Department of Civil and Environmental Engineering, University of Maryland, College Park, MD, USA, 20742.
| | - Allen P Davis
- Department of Civil and Environmental Engineering, University of Maryland, College Park, MD, USA, 20742.
| |
Collapse
|
21
|
Cantu J, Valle J, Flores K, Gonzalez D, Valdes C, Lopez J, Padilla V, Alcoutlabi M, Parsons J. Investigation into the thermodynamics and kinetics of the binding of Cu 2+ and Pb 2+ to TiS 2 nanoparticles synthesized using a solvothermal process. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 2019; 7:103463. [PMID: 32864331 PMCID: PMC7453490 DOI: 10.1016/j.jece.2019.103463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In the present study, titanium (IV) sulfide (TiS2) was synthesized and investigated for the removal of Cu2+ and Pb2+ ions from aqueous solutions. TiS2 nanoparticles synthesized through a solvothermal synthesis were characterized using x-ray diffraction (XRD) and scanning electron microscopy (SEM). The average particle size for the TiS2 material was determined to be 8.03 ± 0.98 nm from the diffraction pattern. Studies were performed to examine the effects of pH, temperature, time, and interfering ions on the binding of Cu2+ and Pb2+ to the TiS2. As well isotherm studies were performed to determine the binding capacity of TiS2 for both Cu2+ and Pb2+ ions. The pH profile studies showed optimal binding occurred at pH 2 for the sorption of both Cu2+ and Pb2+ to the TiS2. The isotherm studies showed the adsorption capacities at temperatures of 4, 22, and 45°C for Cu2+ were 243, 222, and 153 mg/g, respectively. An opposite trend in the adsorption was observed for Pb2+ binding to the TiS2. The observed binding capacities for Pb2+ were 32, 166, and 357 mg/g, at temperatures of 4, 22, and 45°C, respectively. The thermodynamic parameters for binding showed a non-spontaneous process for the sorption of Cu2+ whereas a spontaneous binding process was observed for the sorption of Pb2+. Additionally, the binding of Cu2+ on TiS2 in the presence of interfering ions (Na+, K+, Mg2+, and/or Ca2+) was observed to decrease at high concentrations; however, the binding of Pb2+ was unaffected by the presence of the same cations.
Collapse
Affiliation(s)
- Jesus Cantu
- Department of Chemistry University of Texas Rio Grande Valley One W. University Blvd Brownsville TX 78520
| | - John Valle
- Department of Chemistry University of Texas Rio Grande Valley One W. University Blvd Brownsville TX 78520
| | - Kenneth Flores
- Department of Chemistry University of Texas Rio Grande Valley One W. University Blvd Brownsville TX 78520
| | - Diego Gonzalez
- Department of Chemistry University of Texas Rio Grande Valley One W. University Blvd Brownsville TX 78520
| | - Carolina Valdes
- Department of Chemistry University of Texas Rio Grande Valley One W. University Blvd Brownsville TX 78520
| | - Jorge Lopez
- Department of Mechanical Engineering University of Texas Rio Grande Valley 1201 W University Dr. Edinburg TX 78539
| | - Victoria Padilla
- Department of Mechanical Engineering University of Texas Rio Grande Valley 1201 W University Dr. Edinburg TX 78539
| | - Mataz Alcoutlabi
- Department of Mechanical Engineering University of Texas Rio Grande Valley 1201 W University Dr. Edinburg TX 78539
| | - Jason Parsons
- Department of Chemistry University of Texas Rio Grande Valley One W. University Blvd Brownsville TX 78520
| |
Collapse
|
22
|
Garau G, Porceddu A, Sanna M, Silvetti M, Castaldi P. Municipal solid wastes as a resource for environmental recovery: Impact of water treatment residuals and compost on the microbial and biochemical features of As and trace metal-polluted soils. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:445-454. [PMID: 30852309 DOI: 10.1016/j.ecoenv.2019.03.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/27/2019] [Accepted: 03/03/2019] [Indexed: 05/04/2023]
Abstract
In this study we evaluated the microbiological and biochemical impact of iron-based water treatment residuals (Fe-WTRs) and municipal solid waste compost (MSWC), alone and combined, on three different soils co-contaminated with arsenic (As) and trace-metals (TM), i.e. Pb, Cu and Zn. Overall, all the amendments considered significantly increased the abundance of culturable heterotrophic bacteria, with MSWC showing the greatest impact across all soils (up to a 24% increase). In most of treated soils this was accompanied by a significant reduction of both the (culturable) fungal/bacterial ratio, and the proportion of culturable As(V)- and As(III)-resistant bacteria with respect to total bacterial population. The catabolic potential and versatility of the resident microbial communities (assessed by community level physiological profile) was highly soil-dependent and substantial increases of both parameters were observed in the amended soils with the higher total As concentration (from approx. 749 to 22,600 mg kg-1). Moreover, both carbon source utilisation profile and 16S rRNA soil metagenome sequencing indicated a significant impact of MSWC and Fe-WTRs on the structure and diversity of soil microbial communities, with Proteobacteria, Actinobacteria and Firmicutes being the most affected taxa. The assessment of selected soil enzyme activities (dehydrogenase, urease and β-glucosidase) indicated an increase of metabolic functioning especially in soils treated with MSWC (e.g. dehydrogenase activity increased up to 19.5-fold in the most contaminated soil treated with MSWC). Finally, the microbial and biochemical features of treated (and untreated) contaminated soils (i.e. total bacterial counts, catabolic potential and versatility and soil enzyme activities) were highly correlated with the concentrations of labile As and TM in these latter soils and supported a clear role of the tested amendments (especially MSWC) as As- and TM-immobilising agents.
Collapse
Affiliation(s)
- Giovanni Garau
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100 Sassari, Italy.
| | - Andrea Porceddu
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100 Sassari, Italy
| | - Monica Sanna
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100 Sassari, Italy
| | - Margherita Silvetti
- Dipartimento di Agraria, University of Sassari, Viale Italia 39, 07100 Sassari, Italy
| | - Paola Castaldi
- Dipartimento di Chimica e Farmacia, University of Sassari, Via Vienna 2, 07100 Sassari, Italy.
| |
Collapse
|
23
|
Soleimanifar H, Deng Y, Barrett K, Feng H, Li X, Sarkar D. Water treatment residual-coated wood mulch for addressing urban stormwater pollution. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2019; 91:523-535. [PMID: 30667125 DOI: 10.1002/wer.1055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 01/16/2019] [Indexed: 06/09/2023]
Abstract
Innovative treatment materials and technologies are demanded to address urban stormwater pollutants that challenge traditional infrastructure. This study aimed to investigate adsorption behaviors of aluminum-based water treatment residual (WTR)-coated mulch for capturing representative runoff pollutants (i.e., P, Cu, Zn, and Pb) and evaluate its treatment performance in a filtration bed. Data from batch studies were fit using the nonlinear least square optimization technique. Adsorption kinetic data followed the pseudo-2nd -order reaction patterns, while the adsorption isotherm data obeyed the Freundlich models. Model fitting passed the chi-square tests, as a statistical goodness-of-fit criterion, at a 90% confidence level. Column studies indicate that the WTR-coated mulch with a bed depth of 5.1 or 10.2 cm could effectively alleviate flow-weighted mean concentrations of these pollutants, with a minimal aluminum release, during treatment of the equivalent annual runoff in a typical U.S. Northeastern catchment. This study demonstrates that WTR-coated mulch is an effective and safe adsorbent media to tackle urban stormwater pollution. PRACTITIONER POINTS: Aluminum-based WTR-coated wood mulch can simultaneously and effectively capture representative metals and phosphate in urban runoff. The pollutant adsorption follows the pseudo-2nd -order kinetic reaction patterns and the Freundlich isotherm model. WTR-coated mulch (5.1-10.2 cm bed depth) sufficiently treats the runoff generated annually in a typical U.S. Northeastern catchment. Higher and more reliable pollutant removals can be achieved with a greater bed depth of the coated mulch in a filtration bed. Aluminium release is minimal during application of the WTR-coated wood mulch.
Collapse
Affiliation(s)
- Hanieh Soleimanifar
- Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey
| | - Yang Deng
- Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey
| | | | - Huan Feng
- Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey
| | - Xiaona Li
- Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey
| | - Dibyendu Sarkar
- Department of Department of Civil, Environmental & Ocean Engineering, Stevens Institute of Technology, Hoboken, New Jersey
| |
Collapse
|
24
|
RoyChowdhury A, Sarkar D, Datta R. A combined chemical and phytoremediation method for reclamation of acid mine drainage-impacted soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:14414-14425. [PMID: 30868460 DOI: 10.1007/s11356-019-04785-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Production of acid mine drainage (AMD) and acid sulfate soils is one of the most concerning environmental consequences associated with mining activities. Implementation of appropriate post-mining AMD management practices is very important to minimize environmental impacts such as high soil acidity, soil erosion, and metal leachability. The objective of this study was to develop a cost-effective and environment-friendly "green" technology for the treatment of AMD-impacted soils. This study utilized the metal-binding and acid-neutralizing capacity of an industrial by-product, namely drinking water treatment residuals (WTRs), and the extensive root system of a metal hyper-accumulating, fast-growing, non-invasive, high-biomass perennial grass, vetiver (Chrysopogon zizanioides L.) to prevent soil erosion. Aluminum (Al)-based and calcium (Ca)-based WTRs were used to treat AMD-impacted soil collected from the Tab-Simco coal mine in Carbondale, IL. Tab-Simco is an abandoned coal mine, with very acidic soil containing a number of metals and metalloids such as Fe, Ni, Zn, Pb, and As at high concentrations. A 4-month-long greenhouse column study was performed using 5% and 10% w/w WTR application rates. Vetiver grass was grown on the soil-WTR mixed media. Turbidity and total suspended solid (TSS) analysis of leachates showed that soil erosion decreased in the soil-WTR-vetiver treatments. Difference in pH of leachate samples collected from control (3.06) and treatment (6.71) columns at day 120 indicated acidity removal potential of this technology. A scaled-up simulated field study was performed using 5% WTR application rate and vetiver. Soil pH increased from 2.69 to 7.2, and soil erosion indicators such as turbidity (99%) and TSS (95%) in leachates were significantly reduced. Results from the study showed that this "green" reclamation technique has the potential to effectively treat AMD-impacted soils.
Collapse
Affiliation(s)
- Abhishek RoyChowdhury
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Dibyendu Sarkar
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA.
| | - Rupali Datta
- Department of Biological Sciences, Michigan Technological University, Houghton, MI, 49931, USA
| |
Collapse
|
25
|
RoyChowdhury A, Sarkar D, Datta R. Removal of Acidity and Metals from Acid Mine Drainage-Impacted Water using Industrial Byproducts. ENVIRONMENTAL MANAGEMENT 2019; 63:148-158. [PMID: 30276442 DOI: 10.1007/s00267-018-1112-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
One of the biggest environmental impacts of mining is the generation of acid mine drainage (AMD). In the absence of proper post-mining management practices, AMD pollution can cause massive environmental damage. Current AMD management practices often fail to meet the expectations of cost, efficiency, and sustainability. The objective of this study was to utilize the metal-binding and acid-neutralizing capacity of an industrial by-product that is otherwise landfilled, namely drinking-water treatment residuals (WTRs), to treat AMD-water, thus offering a green remediation alternative. AMD-water was collected from Tab-Simco coal mine in Carbondale, Illinois. It was highly acidic (pH 2.27), and contaminated with metals, metalloids and sulfate at very high concentrations. A filter media, prepared using locally-generated aluminum (Al) and calcium (Ca)-based WTRs, was used to increase pH and to remove metals and [Formula: see text] from AMD-water. Laboratory-batch sorption studies at various WTRs (Al and Ca):AMD-water ratios were performed to optimize the filter media. WTRs:sand ratio of 1:6 provided optimal permeability, and 1:1 Al-WTRs:Ca-WTRs ratio was the optimal sorbent mix for removal of the metals of concern. A scaled-up study using a 55-gallon WTRs and sand-based filter was designed and tested. The results showed that the filter media removed more than 99% of the initial Fe (137 mg/L), Al (80 mg/L), Zn (11 mg/L), Pb (7 mg/L), As (4 mg/L), Mn (33 mg/L), and 44% of the initial [Formula: see text] (2481 mg/L) from Tab-Simco AMD-water. pH increased from 2.27 to 7.8. Desorption experiments showed that the metals were irreversibly bound to the WTRs and were not released back to the water.
Collapse
Affiliation(s)
- Abhishek RoyChowdhury
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Dibyendu Sarkar
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA.
| | - Rupali Datta
- Department of Biological Sciences, Michigan Technological University, Houghton, MI, 49931, USA
| |
Collapse
|
26
|
Cantu J, Gonzalez DF, Cantu Y, Eubanks T, Parsons JG. Thermodynamic and Kinetic study of the removal of Cu 2+ and Pb 2+ ions from aqueous solution using Fe 7S 8 nanomaterial. Microchem J 2018; 140:80-86. [PMID: 30510324 DOI: 10.1016/j.microc.2018.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
In the present study, pyrrhotite (Fe7S8) was investigated for the removal of Pb2+ and Cu2+ ions from aqueous solution. The Fe7S8 material was prepared through a solvothermal method and was characterized using XRD. The average particle size for the nanomaterial was determined to be 29.86 ± 0.87 nm using XRD analysis and Scherrer's equation. Batch studies were performed to investigate the effects of pH, time, temperature, interfering ions, and the binding capacity of Pb2+ and Cu2+ ions to the Fe7S8 nanomaterial. During the pH profile studies, the optimum pH for the binding of Pb2+ and Cu2+ was determined to be pH 5 for both cations. Isotherm studies were conducted from which the thermodynamics and binding capacities for both Cu2+ and Pb2+ were determined. The binding capacity for Pb2+ and Cu2+ binding to the Fe7S8 were determined to be 0.039 and 0.102 mmol/g, respectively at 25°C. The thermodynamic parameters indicated a ΔG for the sorption of Pb2+ ranged from 5.07 kJ/mol to -2.45 kJ/mol indicating a non-spontaneous process was occurring. Whereas, the ΔG for Cu2+ ion binding ranged from 9.78 kJ/mol to -11.23 kJ/mol indicating a spontaneous process at higher temperatures. The enthalpy indicated an endothermic reaction was occurring for the binding of Pb2+ and Cu2+ to the Fe7S8 nanomaterial with ΔH values of 55.8 kJ/mol and 153.5 kJ/mol, respectively. Furthermore, the ΔS values for the reactions were positive indicating an increase in the entropy of the system after metal ion binding. Activation energy studies indicated the binding for both Pb2+ and Cu2+ occurred through chemisorption.
Collapse
Affiliation(s)
- Jesus Cantu
- Department of Chemistry University of Texas Rio Grande Valley 1 West University Blvd. Brownsville TX78521
| | - Diego F Gonzalez
- Department of Chemistry University of Texas Rio Grande Valley 1 West University Blvd. Brownsville TX78521
| | - Yvette Cantu
- Department of Chemistry University of Texas Rio Grande Valley 1 West University Blvd. Brownsville TX78521
| | - Tom Eubanks
- Department of Chemistry University of Texas Rio Grande Valley 1 West University Blvd. Brownsville TX78521
| | - J G Parsons
- Department of Chemistry University of Texas Rio Grande Valley 1 West University Blvd. Brownsville TX78521.,School of Earth Environmental and Marine Science University of Texas Rio Grande Valley 1 West University Blvd. Brownsville TX78521
| |
Collapse
|
27
|
Shariatinia Z, Bagherpour A. Synthesis of zeolite NaY and its nanocomposites with chitosan as adsorbents for lead(II) removal from aqueous solution. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.07.082] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
28
|
Meng Z, Zhou Z, Zheng D, Liu L, Dong J, Yang Y, Li X, Zhang T. Optimizing dewaterability of drinking water treatment sludge by ultrasound treatment: Correlations to sludge physicochemical properties. ULTRASONICS SONOCHEMISTRY 2018; 45:95-105. [PMID: 29705330 DOI: 10.1016/j.ultsonch.2018.02.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/10/2018] [Accepted: 02/13/2018] [Indexed: 06/08/2023]
Abstract
Sludge dewatering has proven to be an effective method to reduce the volume of sludge. In this study, drinking water treatment sludge (DWTS) was treated by ultra-sonication under variable conditions comparing two sonoreactor types (bath and probe), four frequencies (25, 40, 68, 160 kHz) and four energy density levels (0.03, 1, 3, 5 W/mL). The effects of these conditions were studied using specific resistance to filtration and capillary suction time as measures of dewaterability, and floc size, the Brunauer, Emmett and Teller (BET) specific surface area and Zeta potential to determine treated sludge characteristics. The results indicated that the dewaterability of sonicated sludge improved at relatively low energy densities of 0.03 and 1.0 W/mL, while an optimum for sonication duration (within 10 min) was also identified. Higher frequencies (tested up to 160 kHz) with acoustic energy density of 0.03 W/mL also reduced the dewatering property. At higher energy densities of 3.0 and 5.0 W/mL, dewaterability of sludge deteriorated regardless of ultra-sonication time, with an increase of solubilized organic matter content and severely changed floc characteristics. The deterioration of the dewatering capacity was closely related to the considerably reduced floc sizes, dissolution of proteins and polysaccharides, and to the Zeta potential of sonicated sludge flocs. The dewaterability was not correlated with BET specific surface area. Mechanistic explanations for the observations were discussed by analyzing corrosion patterns of aluminum foil as a measure for cavitation field distribution.
Collapse
Affiliation(s)
- Zhili Meng
- School of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan 430065, PR China
| | - Zhiwei Zhou
- School of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan 430065, PR China; Engineering and Technology Research Center of Hubei Province for Wastewater Reclamation, Wuhan 430065, PR China; College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, PR China.
| | - Dan Zheng
- School of Environmental and Biological Engineering, Wuhan Technology and Business University, Wuhan 430065, PR China; Engineering and Technology Research Center of Hubei Province for Wastewater Reclamation, Wuhan 430065, PR China
| | - Lujian Liu
- Engineering and Technology Research Center of Hubei Province for Wastewater Reclamation, Wuhan 430065, PR China
| | - Jun Dong
- Engineering and Technology Research Center of Hubei Province for Wastewater Reclamation, Wuhan 430065, PR China
| | - Yanling Yang
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, PR China.
| | - Xing Li
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Tingting Zhang
- College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, PR China
| |
Collapse
|
29
|
RoyChowdhury A, Sarkar D, Datta R. Preliminary studies on potential remediation of acid mine drainage‐impacted soils by amendment with drinking‐water treatment residuals. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/rem.21562] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
30
|
Jiao J, Zhao J, Pei Y. Adsorption of Co(II) from aqueous solutions by water treatment residuals. J Environ Sci (China) 2017; 52:232-239. [PMID: 28254043 DOI: 10.1016/j.jes.2016.04.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 04/16/2016] [Accepted: 04/20/2016] [Indexed: 06/06/2023]
Abstract
A study on the removal of Co(II) from aqueous solutions by water treatment residuals (WTR) was conducted in batch conditions. The sorption process of Co(II) followed pseudosecond-order kinetics, with 30hr required to reach equilibrium. Using the Langmuir adsorption isotherm model, a relatively high maximum sorption capacity of 17.31mg/g Co(II) was determined. The adsorption of Co(II) was dependent on pH values and was affected by the ionic strength. Results show that Co(II) adsorption was a spontaneous endothermic process and was favorable at high temperature. Most of the adsorbed Co(II) stayed on the WTR permanently, whereas only small amounts of adsorbed Co(II) were desorbed. The shifting of peaks in FT-IR spectra indicated that Co(II) interacted with the WTR surface through strong covalent bond formation with Fe(Al)-O functional groups. It was concluded that WTR can be a suitable material from which to develop an efficient adsorbent for the removal of Co(II) from wastewater.
Collapse
Affiliation(s)
- Jian Jiao
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Jinbo Zhao
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yuansheng Pei
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China.
| |
Collapse
|
31
|
Moradi A, Najafi Moghadam P, Hasanzadeh R, Sillanpää M. Chelating magnetic nanocomposite for the rapid removal of Pb(ii) ions from aqueous solutions: characterization, kinetic, isotherm and thermodynamic studies. RSC Adv 2017. [DOI: 10.1039/c6ra26356a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fe3O4@GMA–AAm nanocomposite as a novel adsorbent with high adsorption capacity for rapid removal of Pb2+ from aqueous media was synthesized.
Collapse
Affiliation(s)
- Atefeh Moradi
- Department of Applied Chemistry
- Faculty of Chemistry
- Urmia University
- Urmia
- Iran
| | | | - Reza Hasanzadeh
- Department of Organic Chemistry
- Faculty of Chemistry
- Urmia University
- Urmia
- Iran
| | - Mika Sillanpää
- Department of Chemistry
- Lappeenranta University of Technology
- Lappeenranta
- Finland
- Department of Civil and Environmental Engineering
| |
Collapse
|
32
|
Yuan N, Wang C, Pei Y. Bacterial toxicity assessment of drinking water treatment residue (DWTR) and lake sediment amended with DWTR. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 182:21-28. [PMID: 27454093 DOI: 10.1016/j.jenvman.2016.07.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 07/12/2016] [Accepted: 07/15/2016] [Indexed: 06/06/2023]
Abstract
Drinking water treatment residue (DWTR) seems to be very promising for controlling lake sediment pollution. Logically, acquisition of the potential toxicity of DWTR will be beneficial for its applications. In this study, the toxicity of DWTR and sediments amended with DWTR to Aliivibrio fischeri was evaluated based on the Microtox(®) solid and leachate phase assays, in combination with flow cytometry analyses and the kinetic luminescent bacteria test. The results showed that both solid particles and aqueous/organic extracts of DWTR exhibited no toxicity to the bacterial luminescence and growth. The solid particles of DWTR even promoted bacterial luminescence, possibly because DWTR particles could act as a microbial carrier and provide nutrients for bacteria growth. Bacterial toxicity (either luminescence or growth) was observed from the solid phase and aqueous/organic extracts of sediments with or without DWTR addition. Further analysis showed that the solid phase toxicity was determined to be related mainly to the fixation of bacteria to fine particles and/or organic matter, and all of the observed inhibition resulting from aqueous/organic extracts was identified as non-significant. Moreover, DWTR addition not only had no adverse effect on the aqueous/organic extract toxicity of the sediment but also reduced the solid phase toxicity of the sediment. Overall, in practical application, the solid particles, the water-soluble substances transferred to surface water or the organic substances in DWTR had no toxicity or any delayed effect on bacteria in lakes, and DWTR can therefore be considered as a non-hazardous material.
Collapse
Affiliation(s)
- Nannan Yuan
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing, China
| | - Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Yuansheng Pei
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing, China.
| |
Collapse
|
33
|
Tartaric acid modified graphene oxide as a novel adsorbent for high-efficiently removal of Cu(II) and Pb(II) from aqueous solutions. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.06.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
34
|
Hossein Beyki M, Fazli Y. Polyhydroxyquinoline-carbon nanotube chelating resin for selective adsorption of lead ions: multivariate optimization, isothermic, and thermodynamic study. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2650-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
35
|
Xu H, Zhu B, Ren X, Shao D, Tan X, Chen C. Controlled synthesized natroalunite microtubes applied for cadmium(II) and phosphate co-removal. JOURNAL OF HAZARDOUS MATERIALS 2016; 314:249-259. [PMID: 27136730 DOI: 10.1016/j.jhazmat.2016.04.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/07/2016] [Accepted: 04/18/2016] [Indexed: 06/05/2023]
Abstract
Treatment of wastewater containing several kinds of contaminants poses great challenges, because heavy metal and inorganic anion contaminants possess different fate and transport mechanisms. Individual adsorption of Cd(II)/phosphate on clay or metallic oxides has been extensively investigated, but the mutual effects of these two species in co-existing systems have received little attention. In this study, five natroalunite samples with different morphologies were synthesized by a simple hydrothermal method with appropriate volume ratio of ethylene glycol (EG) to water. The volume ratio of EG to water plays a key role in the formation of natroalunite samples, and dramatically affects their adsorption capacities. The mutual effects of Cd(II) and phosphate on their interaction with natroalunite microtubes (NMs) were investigated by varying experimental conditions, such as pH, temperature and addition sequences. The results demonstrate that highly efficient co-removal of Cd(II) and phosphate can be accomplished using NMs, and the process is strongly dependent on solution pH and temperature via the formation of ternary surface complexes. This study implies that the hydrothermally synthesized NMs can be regarded as a potential promising material for the co-removal of Cd(II) and phosphate from large volumes of aqueous solutions in pollution management.
Collapse
Affiliation(s)
- Huan Xu
- School of Physics and Materials Science, Anhui University, Hefei 230601, PR China; Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China
| | - Baisheng Zhu
- University of Science and Technology of China, Hefei 230026, PR China
| | - Xuemei Ren
- Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China.
| | - Dadong Shao
- Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China
| | - Xiaoli Tan
- Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China
| | - Changlun Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China
| |
Collapse
|
36
|
Yuan N, Wang C, Pei Y. Investigation on the eco-toxicity of lake sediments with the addition of drinking water treatment residuals. J Environ Sci (China) 2016; 46:5-15. [PMID: 27521931 DOI: 10.1016/j.jes.2015.12.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/23/2015] [Accepted: 12/25/2015] [Indexed: 06/06/2023]
Abstract
Drinking water treatment residuals (WTRs) have a potential to realize eutrophication control objectives by reducing the internal phosphorus (P) load of lake sediments. Information regarding the ecological risk of dewatered WTR reuse in aquatic environments is generally lacking, however. In this study, we analyzed the eco-toxicity of leachates from sediments with or without dewatered WTRs toward algae Chlorella vulgaris via algal growth inhibition testing with algal cell density, chlorophyll content, malondialdehyde content, antioxidant enzyme superoxide dismutase activity, and subcellular structure indices. The results suggested that leachates from sediments unanimously inhibited algal growth, with or without the addition of different WTR doses (10% or 50% of the sediment in dry weight) at different pH values (8-9), as well as from sediments treated for different durations (10 or 180days). The inhibition was primarily the result of P deficiency in the leachates owing to WTR P adsorption, however, our results suggest that the dewatered WTRs were considered as a favorable potential material for internal P loading control in lake restoration projects, as it shows acceptably low risk toward aquatic plants.
Collapse
Affiliation(s)
- Nannan Yuan
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Changhui Wang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yuansheng Pei
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China.
| |
Collapse
|
37
|
Abstract
Nano-sized Fe3O4 and Fe2O3 were synthesized using a precipitation method. The nanomaterials were tested as adsorbents for the removal of both Cu2+ and Pb2+ ions. The nanomaterials were characterized using X-ray powder diffraction to determine both the phase and the average grain size of the synthesized nanomaterials. Batch pH studies were performed to determine the optimum binding pH for both the Cu2+ and Pb2+ to the synthesized nanomaterials. The optimum binding was observed to occur at pH 4 and above. Time dependency studies for Cu2+ and Pb2+ showed the binding occurred within the first five minutes of contact and remained constant up to 2 hours of contact. Isotherm studies were utilized to determine the binding capacity of each of the nanomaterials for Cu2+ and Pb2+. The binding capacity of Fe3O4 with Cu2+ and Pb2+ were 37.04 mg/g and 166.67 mg/g, respectively. The binding capacities of the Fe2O3 nanomaterials with Cu2+ and Pb2+ were determined to be 19.61 mg/g and 47.62 mg/g, respectively. In addition, interference studies showed no significant reduction in the binding of either Cu2+ or Pb2+ to the Fe3O4 or Fe2O3 nanomaterials in the presence of solutions containing the individual ions Na+, K+, Mg2+ and Ca2+ or a solution consisting of a combination of all the aforementioned cations in one solution.
Collapse
|
38
|
Zhou Z, Yang Y, Li X. Effects of ultrasound pretreatment on the characteristic evolutions of drinking water treatment sludge and its impact on coagulation property of sludge recycling process. ULTRASONICS SONOCHEMISTRY 2015; 27:62-71. [PMID: 26186821 DOI: 10.1016/j.ultsonch.2015.04.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 03/08/2015] [Accepted: 04/17/2015] [Indexed: 05/16/2023]
Abstract
Large amounts of drinking water treatment sludge (DWTS) are produced during the flocculation or flotation process. The recycling of DWTS is important for reducing and reclaiming the waste residues from drinking water treatment. To improve the coagulation step of the DWTS recycling process, power ultrasound was used as a pretreatment to disintegrate the DWTS and degrade or inactivate the constituents that are difficult to remove by coagulation. The effects of ultrasound pretreatment on the characteristics of DWTS, including the extent of disintegration, variation in DWTS floc characteristics, and DWTS dewaterability, were investigated. The capacity of the recycling process to remove particulates and organic matter from low-turbidity surface water compared to a control treatment process without DWTS was subsequently evaluated. The coagulation mechanism was further investigated by analyzing the formation, breakage, and re-growth of re-coagulated flocs. Our results indicated that under the low energy density applied (0.03-0.033 W/mL) for less than 15 min at a frequency of 160 kHz, the level of organic solubilization was less elevated, which was evidenced by the lower release of proteins and polysaccharides and lower fluorescence intensities of humic- and protein-like substances. The applied ultrasound conditions had an adverse effect on the dewaterability of the DWTS. Ultrasound pretreatment had no significant impact on the pH or surface charge of the DWTS flocs, whereas particle size decreased slightly and the specific surface area was moderately increased. The pollution removal capacity decreased somewhat for the recycled sonicated DWTS treatment, which was primarily ascribed to organic solubilization rather than variability in the floc characteristics of sonicated DWTS. The main coagulation mechanism was floc sweeping and physical adsorption. The breakage process of the flocs formed by the recycling process displayed distinct irreversibility, and the flocs were stronger and more resistant to breakage compared to those from the control treatment.
Collapse
Affiliation(s)
- Zhiwei Zhou
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, PR China
| | - Yanling Yang
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, PR China.
| | - Xing Li
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, PR China
| |
Collapse
|
39
|
Liu A, Zhou W, Shen K, Liu J, Zhang X. One-pot hydrothermal synthesis of hematite-reduced graphene oxide composites for efficient removal of malachite green from aqueous solution. RSC Adv 2015. [DOI: 10.1039/c4ra15589k] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The α-Fe2O3–rGO materials prepared by one-pot hydrothermal conditions exhibit an excellent capacity to remove MG from water.
Collapse
Affiliation(s)
- Airong Liu
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Wen Zhou
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Kaile Shen
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Jing Liu
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| | - Xixi Zhang
- State Key Laboratory for Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai
- China
| |
Collapse
|