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Yatoo AM, Hamid B, Sheikh TA, Ali S, Bhat SA, Ramola S, Ali MN, Baba ZA, Kumar S. Global perspective of municipal solid waste and landfill leachate: generation, composition, eco-toxicity, and sustainable management strategies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:23363-23392. [PMID: 38443532 DOI: 10.1007/s11356-024-32669-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 02/23/2024] [Indexed: 03/07/2024]
Abstract
Globally, more than 2 billion tonnes of municipal solid waste (MSW) are generated each year, with that amount anticipated to reach around 3.5 billion tonnes by 2050. On a worldwide scale, food and green waste contribute the major proportion of MSW, which accounts for 44% of global waste, followed by recycling waste (38%), which includes plastic, glass, cardboard, and paper, and 18% of other materials. Population growth, urbanization, and industrial expansion are the principal drivers of the ever-increasing production of MSW across the world. Among the different practices employed for the management of waste, landfill disposal has been the most popular and easiest method across the world. Waste management practices differ significantly depending on the income level. In high-income nations, only 2% of waste is dumped, whereas in low-income nations, approximately 93% of waste is burned or dumped. However, the unscientific disposal of waste in landfills causes the generation of gases, heat, and leachate and results in a variety of ecotoxicological problems, including global warming, water pollution, fire hazards, and health effects that are hazardous to both the environment and public health. Therefore, sustainable management of MSW and landfill leachate is critical, necessitating the use of more advanced techniques to lessen waste production and maximize recycling to assure environmental sustainability. The present review provides an updated overview of the global perspective of municipal waste generation, composition, landfill heat and leachate formation, and ecotoxicological effects, and also discusses integrated-waste management approaches for the sustainable management of municipal waste and landfill leachate.
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Affiliation(s)
- Ali Mohd Yatoo
- Centre of Research for Development, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India.
- Department of Environmental Sciences, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India.
| | - Basharat Hamid
- Department of Environmental Sciences, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India
| | - Tahir Ahmad Sheikh
- Faculty of Agriculture, SKUAST-Kashmir, Jammu and Kashmir, Wadura, 193201, India
| | - Shafat Ali
- Centre of Research for Development, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India
| | - Sartaj Ahmad Bhat
- River Basin Research Centre, Gifu University, 1-1 Yanagido, Gifu, Japan
- Waste Re-Processing Division, CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur, 440020, India
| | - Sudipta Ramola
- Zhejiang University of Technology, Hangzhou, 310014, China
| | - Md Niamat Ali
- Centre of Research for Development, University of Kashmir, Srinagar, 190006, Jammu and Kashmir, India
| | - Zahoor Ahmad Baba
- Faculty of Agriculture, SKUAST-Kashmir, Jammu and Kashmir, Wadura, 193201, India
| | - Sunil Kumar
- Waste Re-Processing Division, CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur, 440020, India
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Kavian N, Asadollahfardi G, Hasanbeigi A, Delnavaz M, Samadi A. Degradation of phenol in wastewater through an integrated dielectric barrier discharge and Fenton/photo-Fenton process. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115937. [PMID: 38211511 DOI: 10.1016/j.ecoenv.2024.115937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 01/13/2024]
Abstract
In this study, a non-thermal dielectric barrier discharge-Fenton/photo-Fenton process was investigated to remove phenol from synthetic wastewater. The changes and optimal values of influencing parameters, including treatment time, iron concentration, phenol initial concentration, and pH, were investigated based on the central composite design (CCD) method. The presence of 0.4 mmol/L of iron in the phenol solution with a concentration of 100 mg/L increased the removal efficiency and pseudo-first-order kinetic constant compared to dielectric barrier discharge cold plasma (DBDP) alone from 0.0824 min-1 and 56.8% to 0.2078 min-1 and 86.83%, respectively. The phenol removal efficiency was reduced to 52.9%, 45.6% and 31.8% by adding tert-butyl alcohol (TBA) with concentrations of 50, 100, and 200 mg/l, respectively. After 12 min of DBDP irradiation, the pH of the sample decreased from 5.95 to 3.42, and the temperature of the sample increased from 19.3 to 37.2 degrees Celsius. The chemical oxygen demand (COD) of the sample containing 100 mg/L phenol under plasma-Fenton/photo-Fenton irradiation decreased from 241 mg/L to 161 mg/L. Phenol removal efficiency after 10 min of treatment in the presence of 0.4 mmol/L of iron with the reactor volume of 50 mL was 87%, but the efficiency decreased to 76%, 47%, and 9% by increasing the volume to 100, 200, and 400 mL, respectively. Reducing the power led to a decrease in the removal efficiency from 56.8% for 100 W power to 10.8% for 40 W. The energy efficiency for 50% removal by DBDP and plasma-Fenton/photo-Fenton systems was 5.86×10-3 kWh/mg and 1.27×10-3 kWh/mg, respectively.
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Affiliation(s)
- Niusha Kavian
- Faculty of Engineering, Civil Engineering Department, Kharazmi University, Tehran 15719-14911, Iran
| | - Gholamreza Asadollahfardi
- Faculty of Engineering, Civil Engineering Department, Kharazmi University, Tehran 15719-14911, Iran.
| | - Ali Hasanbeigi
- Faculty of Physics, Department of Physics and Institute for Plasma Research, Kharazmi University, Tehran 15719-14911, Iran
| | - Mohammad Delnavaz
- Faculty of Engineering, Civil Engineering Department, Kharazmi University, Tehran 15719-14911, Iran
| | - Amirmohsen Samadi
- Faculty of Engineering, Civil Engineering Department, Kharazmi University, Tehran 15719-14911, Iran
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Mosquera-Romero S, Ntagia E, Rousseau DP, Esteve-Núñez A, Prévoteau A. Water treatment and reclamation by implementing electrochemical systems with constructed wetlands. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2023; 16:100265. [PMID: 37101565 PMCID: PMC10123341 DOI: 10.1016/j.ese.2023.100265] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 06/19/2023]
Abstract
Seasonal or permanent water scarcity in off-grid communities can be alleviated by recycling water in decentralized wastewater treatment systems. Nature-based solutions, such as constructed wetlands (CWs), have become popular solutions for sanitation in remote locations. Although typical CWs can efficiently remove solids and organics to meet water reuse standards, polishing remains necessary for other parameters, such as pathogens, nutrients, and recalcitrant pollutants. Different CW designs and CWs coupled with electrochemical technologies have been proposed to improve treatment efficiency. Electrochemical systems (ECs) have been either implemented within the CW bed (ECin-CW) or as a stage in a sequential treatment (CW + EC). A large body of literature has focused on ECin-CW, and multiple scaled-up systems have recently been successfully implemented, primarily to remove recalcitrant organics. Conversely, only a few reports have explored the opportunity to polish CW effluents in a downstream electrochemical module for the electro-oxidation of micropollutants or electro-disinfection of pathogens to meet more stringent water reuse standards. This paper aims to critically review the opportunities, challenges, and future research directions of the different couplings of CW with EC as a decentralized technology for water treatment and recovery.
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Affiliation(s)
- Suanny Mosquera-Romero
- Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
- ESPOL Polytechnic University, Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias Naturales y Matemáticas, BOX9050, Ecuador
- Department of Green Chemistry and Technology, Ghent University, Sint-Martens-Latemlaan 2B, B-8500, Kortrijk, Belgium
- Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Frieda Saeysstraat 1, 9000, Ghent, Belgium
| | - Eleftheria Ntagia
- Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
- Université Paris-Saclay, INRAE, PROSE, 92160, Antony, France
| | - Diederik P.L. Rousseau
- Department of Green Chemistry and Technology, Ghent University, Sint-Martens-Latemlaan 2B, B-8500, Kortrijk, Belgium
| | - Abraham Esteve-Núñez
- Universidad de Alcalá, Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Alcalá de Henares, Spain
| | - Antonin Prévoteau
- Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
- Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Frieda Saeysstraat 1, 9000, Ghent, Belgium
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Bai F, Tian H, Wang C, Ma J. Treatment of nanofiltration concentrate of landfill leachate using advanced oxidation processes incorporated with bioaugmentation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 318:120827. [PMID: 36509353 DOI: 10.1016/j.envpol.2022.120827] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/20/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Advanced oxidation processes have been broadly applied in wastewater treatment, but few studies have focused on its degradative effect on refractory organic contaminants in membrane concentrates of landfill leachate. In this study, the treatment effects of advanced oxidation processes including electrocoagulation (EC), ozone (OZ), anodic oxidation (AO) and electro-Fenton (EF) incorporated with genetically engineered nitrifying bacteria Rhodococcus erythropolis expressing Nirs and AMO (rRho-NM) on nanofiltration concentrate (NFC) of old landfill leachate were investigated in a lab-scale experiment. The results showed that advanced oxidation processes degraded the refractory organic contaminants including coagulation-resistant substances (CRS), humic acid (HA), fulvic acid (FvA), macro molecular organics (MMOs) and benzene ring compounds (BRCs) and increased the biodegradability in NFC of old landfill leachate. Compared to activated sludge (AS), rRho-NM exhibited an excellent removal performance for total organic carbon (TOC), ammonia nitrogen (NH4-N), total nitrogen (TN), biochemical oxygen demand (BOD) and chemical oxygen demand (COD) for advanced oxidation processes-treated NFC of old landfill leachate. Advanced oxidation processes incorporated with bioaugmentation demonstrated an outstanding degradation performance for removing refractory organic contaminants, TOC, NH4-N, TN, BOD, COD and heavy metal in NFC of old landfill leachate. In addition, OZ incorporated with rRho-NM (OZ-rRho-NM) showed the optimal removal efficacy in reduction of refractory organic contaminants, TOC, NH4-N, TN, BOD and COD, the shortest hydraulic retention time (HRT) and the minimum energy consumption in NFC of landfill leachate. Furthermore, the cheapest treatment cost for NFC could be achieved by EC incorporated with rRho-NM (EC-rRho-NM). More impressively, rRho-NM remained stable in expressing Nirs and AMO genes, increased nitrification and denitrification rate, and improved MBR effluent quality in the treatment of NFC. In conclusion, this work provides new insights into the application of advanced oxidation processes incorporated with bioaugmentation using rRho-NM for the treatment of NFC of old landfill leachate.
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Affiliation(s)
- Fuliang Bai
- Department of Resources and Environmental Sciences, School of Geographical Science, Harbin Normal University, Harbin, 150025, China; State Key Laboratory of Urban Water and Environment, Harbin Institute of Technology, Harbin, 150096, China.
| | - Hui Tian
- School of Life Science, Harbin Institute of Technology, Harbin, 150090, China.
| | - Chunguang Wang
- Department of Geographical Sciences, School of Geographical Science, Harbin Normal University, Harbin, 150025, China.
| | - Jun Ma
- State Key Laboratory of Urban Water and Environment, Harbin Institute of Technology, Harbin, 150096, China
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Lu S, Zhang G. Recent advances on inactivation of waterborne pathogenic microorganisms by (photo) electrochemical oxidation processes: Design and application strategies. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128619. [PMID: 35359104 DOI: 10.1016/j.jhazmat.2022.128619] [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: 01/17/2022] [Revised: 02/18/2022] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
Compared with other conventional water disinfection processes, (photo) electrochemical oxidation (P/ECO) processes have the characteristics of environmental friendliness, convenient installation and operation, easy control and high efficiency of inactivating waterborne pathogenic microorganisms (PMs), so that more and more research work has been focused on this topic, but there is still a huge gap between the research and practical application. Here, the research network of inactivating PMs by P/ECO processes has been comprehensively summarized, and the electrode/reactor/process design strategies based on strengthening direct and indirect oxidation, enhancing mass transfer efficiency and electron transfer efficiency, and improving the effective dose of electrogenerated oxidants are discussed. Furthermore, the factors affecting the inactivation of PMs and the issues regarding to stability and lifetime of the electrode are discussed respectively. Finally, the important research priorities and possible research challenges of P/ECO processes are put forward to make significant progress of this technology.
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Affiliation(s)
- Sen Lu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, PR China; School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, PR China
| | - Guan Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, PR China; School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, PR China.
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Feng W, Liu Y, Gao L. Stormwater treatment for reuse: Current practice and future development - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 301:113830. [PMID: 34600425 DOI: 10.1016/j.jenvman.2021.113830] [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: 01/28/2021] [Revised: 08/18/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Stormwater harvesting is an effective measure to mitigate flooding risk and pollutant migration in our urban environment with the continuously increasing impermeable faction. Treatment of harvested stormwater also provides the fit-for-purpose water sources as an alternative to potable water supply ensuring the reliability and sustainability of the water management in the living complex. In order to provide the water management decision-maker with a broad range of related technology database and to facilitate the implementation of stormwater harvesting in the future, a comprehensive review was undertaken to understand the corresponding treatment performance, the applicable circumstances of current stormwater treatment and harvesting technologies. Technologies with promising potential for stormwater treatment were also reviewed to investigate the feasibility of being used in an integrated process. The raw stormwater quality and the required quality for different levels of stormwater reuses (irrigation, recreational, and potable) were reviewed and compared. The required level of treatment is defined for different 'fit-for-purpose' uses of harvested stormwater. Stormwater biofilter and constructed wetland as the two most advanced and widely used stormwater harvesting and treatment technologies, their main functionality, treatment performance and adequate scale of the application were reviewed based on published peer-reviewed articles and case studies. Excessive microbial effluent that exists in stormwater treated using these two technologies has restricted the stormwater reuse in most cases. Water disinfection technologies developed for wastewater and surface water treatment but with high potential to be used for stormwater treatment have been reviewed. Their feasibility and limitation for stormwater treatment are presented with respect to different levels of fit-for-purpose reuses. Implications for future implementation of stormwater treatment are made on proposing treatment trains that are suitable for different fit-for-purpose stormwater reuses.
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Affiliation(s)
- Wenjun Feng
- Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Yue Liu
- Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Li Gao
- Institute of Sustainability and Innovation, Victoria University, PO Box 14428, Melbourne, Victoria, 8001, Australia; South East Water Corporation, Seaford, VIC, 3198 Australia.
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Su P, Fu W, Du X, Song G, Tang Y, Zhou M. Nanoscale confinement in carbon nanotubes encapsulated zero-valent iron for phenolics degradation by heterogeneous Fenton: Spatial effect and structure–activity relationship. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119232] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Combined Iron-Loaded Zeolites and Ozone-Based Process for the Purification of Drinking Water in a Novel Hybrid Reactor: Removal of Faecal Coliforms and Arsenic. Catalysts 2021. [DOI: 10.3390/catal11030373] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
This study was carried out to provide a novel solution to treat drinking water at household levels, specifically removing arsenic (As) and faecal coliforms (microbes). In the current investigation, a synergistic iron-loaded zeolites and ozonation process (O3/Fe-ZA) was used for the first time in a modified batch reactor to remove coliform bacteria and arsenic in tap water. Moreover, the study utilizes the human health risk assessment model to confirm the health risk due to As intake in drinking water. The risk assessment study revealed a health risk threat among the residents suffering from the adverse effects of As through its intake in drinking water. Furthermore, the results also suggested that the O3/Fe-ZA process significantly removes faecal coliforms and As, when compared with single ozonation processes. Additionally, the ozone dose 0.2 mg/min and Fe-ZA dose of 10 g (in the O3/Fe-ZA process) gives the maximum removal efficiency of 100% within 15 min for faecal coliform removal. In 30 min, the removal efficiency of 88.4% was achieved at the ozone dose of 0.5 mg/min and 93% removal efficiency was achieved using 10 g Fe-ZA for the removal of As in the O3/Fe-ZA process. Hence, it was concluded that the O3/Fe-ZA process may be regarded as an effective method for removing faecal coliforms and As from drinking water compared to the single ozonation processes.
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Evaluation of Different Treatment Processes for Landfill Leachate Using Low-Cost Agro-Industrial Materials. Processes (Basel) 2020. [DOI: 10.3390/pr8010111] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Leachate is a complex liquid that is often produced from landfills, and it contains hazardous substances that may endanger the surrounding environment if ineffectively treated. In this work, four leachate treatment applications were examined: combined leachate/palm oil mill effluent (POME) (LP), leachate/tannin (LT), pre-(leachate/tannin) followed by post-(leachate/POME) (LT/LP), and pre-(leachate/POME) followed by post-(leachate/tannin) (LP/LT). The aim of this work is to evaluate and compare the performance of these treatment applications in terms of optimizing the physicochemical parameters and removing heavy metals from the leachate. The highest efficiency for the optimization of the most targeted physicochemical parameters and the removal of heavy metals was with the LP/LT process. The results are indicative of three clusters. The first cluster involves raw leachate (cluster 1), the second contains LP and LP/LT (cluster 2), and the third also consists of two treatment applications, namely, LT and LT/LP (cluster 3). The results demonstrate that LP/LT is the most appropriate method for leachate treatment using low-cost agro-industrial materials.
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Isolation distance between municipal solid waste landfills and drinking water wells for bacteria attenuation and safe drinking. Sci Rep 2019; 9:17881. [PMID: 31784644 PMCID: PMC6884615 DOI: 10.1038/s41598-019-54506-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 11/11/2019] [Indexed: 11/24/2022] Open
Abstract
Groundwater pollution and human health risks caused by leachate leakage have become a worldwide environmental problem, and the harm and influence of bacteria in leachate have received increased attention. Setting the isolation distance between landfill sites and groundwater isolation targets is particularly important. Firstly, the intensity model of pollutant leakage source and solute transport model were established for the isolation of pathogenic Escherichia coli. Then, the migration, removal and reduction of bacteria in the aerated zone and ground were simulated. Finally, the isolation distance was calculated based on the acceptable water quality limits, and the influence of hydrogeological arameters was analyzed based on the parameter uncertainty. The results of this study suggest that the isolation distances vary widely ranging from 106 m–5.46 km in sand aquifers, 292 m–13.5 km in gravel aquifers and 2.4–58.7 km in coarse gravel aquifers. The gradient change of groundwater from 0.001 to 0.05 resulted in the isolation distance at the highest gradient position being 2–30 times greater than that at the lowest gradient position. There was a difference in the influence of the thickness of the vadose zone. For example, under the same conditions, with the increase of the thickness of the aeration zone, the isolation distance will be reduced by 1.5–5 times, or under the same thickness of the aeration zone, the isolation distance will be significantly shortened. Accordingly, this needs to be determined based on specific safety isolation requirements. In conclusion, this research has important guiding significance for the environmental safety assessment technology of municipal solid waste landfill.
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Banch TJH, Hanafiah MM, Alkarkhi AFM, Abu Amr SS. Factorial Design and Optimization of Landfill Leachate Treatment Using Tannin-Based Natural Coagulant. Polymers (Basel) 2019; 11:E1349. [PMID: 31416151 PMCID: PMC6722616 DOI: 10.3390/polym11081349] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/15/2019] [Accepted: 06/16/2019] [Indexed: 11/17/2022] Open
Abstract
In this study, tannin-based natural coagulant was used to treat stabilized landfill leachate. Tannin modified with amino group was utilized for the treatment process. Central composite design (CCD) was used to investigate and optimize the effect of tannin dosage and pH on four responses. The treatment efficiency was evaluated based on the removal of four selected (responses) parameters; namely, chemical oxygen demand (COD), color, NH3-N and total suspended solids (TSS). The optimum removal efficiency for COD, TSS, NH3-N and color was obtained using a tannin dosage of 0.73 g at a pH of 6. Moreover, the removal efficiency for selected heavy metals from leachate; namely, iron (Fe2+), zinc (Zn2+), copper (Cu2+), chromium (Cr2+), cadmium (Cd2+), lead (Pb2+), arsenic (As3+), and cobalt (Co2+) was also investigated. The results for removal efficiency for COD, TSS, NH3-N, and color were 53.50%, 60.26%, and 91.39%, respectively. The removal of selected heavy metals from leachate for Fe2+, Zn2+, Cu2+, Cr2+, Cd2+, Pb2+, As3+ and cobalt Co2+ were 89.76%, 94.61%, 94.15%, 89.94%, 17.26%, 93.78%, 86.43% and 84.19%, respectively. The results demonstrate that tannin-based natural coagulant could effectively remove organic compounds and heavy metals from stabilized landfill leachate.
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Affiliation(s)
- Tawfiq J H Banch
- Center for Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia
| | - Marlia M Hanafiah
- Center for Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
- Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia.
| | - Abbas F M Alkarkhi
- Universiti Kuala Lumpur, Malaysian Institute of Chemical & Bioengineering Technology (UniKL, MICET), Melaka 78000, Malaysia
| | - Salem S Abu Amr
- Universiti Kuala Lumpur, Malaysian Institute of Chemical & Bioengineering Technology (UniKL, MICET), Melaka 78000, Malaysia.
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Seid-Mohammadi A, Asgari G, Rahmani A, Madrakian T, Karami A. Evaluation of zeolite supported bimetallic nanoparticles of zero-valent iron and copper (Z-nZVI/Cu) in the presence of ultrasonic for simultaneous removal of nitrate and total coliforms from aqueous solutions: optimization and modeling with response surface methodology. TOXIN REV 2019. [DOI: 10.1080/15569543.2019.1617316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Abdolmotaleb Seid-Mohammadi
- Department of Environmental Health Engineering, Social Determinants of Health Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ghorban Asgari
- Department of Environmental Health Engineering, Social Determinants of Health Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Alireza Rahmani
- Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Amir Karami
- Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
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Tang Q, Gu F, Zhang Y, Zhang Y, Mo J. Impact of biological clogging on the barrier performance of landfill liners. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 222:44-53. [PMID: 29800864 DOI: 10.1016/j.jenvman.2018.05.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/25/2018] [Accepted: 05/12/2018] [Indexed: 06/08/2023]
Abstract
The durability of landfill mainly relies on the anti-seepage characteristic of liner system. The accumulation of microbial biomass is effective in reducing the hydraulic conductivity of soils. This study aimed at evaluating the impact of the microorganism on the barrier performance of landfill liners. According to the results, Escherichia coli. produced huge amounts of extracellular polymeric substances and coalesced to form a confluent plugging biofilm. This microorganism eventually resulted in the decrease of soil permeability by 81%-95%. Meanwhile, the increase of surface roughness inside the internal pores improved the adhesion between microorganism colonization and particle surface. Subsequently, an extensive parametric sensitivity analysis was undertaken for evaluating the contaminant transport in landfill liners. Decreasing the hydraulic conductivity from 1 × 10-8 m/s to 1 × 10-10 m/s resulted in the increase of the breakthrough time by 345.2%. This indicates that a low hydraulic conductivity was essential for the liner systems to achieve desirable barrier performance.
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Affiliation(s)
- Qiang Tang
- School of Rail Transportation, Soochow University, Yangchenghu Campus, Xiangcheng District, Suzhou, 215131, China; Graduate School of Global Environmental Studies, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Fan Gu
- National Center for Asphalt Technology, Auburn University, 277 Technology PKWY, Auburn, AL 36830, USA.
| | - Yu Zhang
- School of Rail Transportation, Soochow University, Yangchenghu Campus, Xiangcheng District, Suzhou, 215131, China
| | - Yuqing Zhang
- School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham, B4 7ET, UK
| | - Jialin Mo
- Graduate School of Global Environmental Studies, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
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Aftab B, Shin HS, Hur J. Exploring the fate and oxidation behaviors of different organic constituents in landfill leachate upon Fenton oxidation processes using EEM-PARAFAC and 2D-COS-FTIR. JOURNAL OF HAZARDOUS MATERIALS 2018; 354:33-41. [PMID: 29727788 DOI: 10.1016/j.jhazmat.2018.04.059] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 04/06/2018] [Accepted: 04/24/2018] [Indexed: 06/08/2023]
Abstract
In this work, the changes of different organic constituents in landfill leachate were tracked in Fenton oxidation processes with different operation parameters including H2O2 doses, pH, and the ratios of [H2O2]/[Fe] via fluorescence excitation emission matrix - parallel factor analysis (EEM-PARAFAC) and two-dimensional correlation spectroscopy (2D-COS). One tryptophan-like (C1), one fulvic-like (C2), and one humic-like (C3) components were identified in the leachates. The removal behaviors of the individual fluorescent components were dependent upon the operation conditions, suggesting the existence of unique characteristics with respect to the responses to the oxidation mechanisms, which were likely altered by different operation conditions. For all tested conditions, a greater extent of removal was consistently found for C3 versus C1 and C2 except for the relatively high pH ranges (>6.0), in which C2 presented the highest removal rates. 2D-COS combined with synchronous fluorescence spectra exhibited the preferential oxidation sequence in the order of C3 > C1 > C2 with higher H2O2 doses. 2D-COS coupled with Fourier transform infrared (2D-COS-FTIR) showed that aromatic functional groups were initially oxidized, followed by the removal of carboxylic groups and the formation of inorganic functional groups and aldehyde or ketonic groups. Hetero 2D-COS maps further revealed the close association between the aromatic groups and C3, and between the carboxylic groups and C1. This study utilizing 2D-COS provided new insights into the dynamic behavior of heterogeneous landfill leachate in Fenton oxidation processes under varying operation conditions.
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Affiliation(s)
- Bilal Aftab
- Department of Environment and Energy, Sejong University, Seoul 05006, South Korea
| | - Hyun-Sang Shin
- Department of Environmental Engineering, Seoul National University of Science and Technology, Seoul 01811, South Korea
| | - Jin Hur
- Department of Environment and Energy, Sejong University, Seoul 05006, South Korea.
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15
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Anfruns-Estrada E, Bruguera-Casamada C, Salvadó H, Brillas E, Sirés I, Araujo RM. Inactivation of microbiota from urban wastewater by single and sequential electrocoagulation and electro-Fenton treatments. WATER RESEARCH 2017; 126:450-459. [PMID: 28992592 DOI: 10.1016/j.watres.2017.09.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/27/2017] [Accepted: 09/28/2017] [Indexed: 05/03/2023]
Abstract
This work aims at comparing the ability of two kinds of electrochemical technologies, namely electrocoagulation (EC) and electro-Fenton (EF), to disinfect primary and secondary effluents from municipal wastewater treatment plants. Heterotrophic bacteria, Escherichia coli, enterococci, Clostridium perfringens spores, somatic coliphages and eukaryotes (amoebae, flagellates, ciliates and metazoa) were tested as indicator microorganisms. EC with an Fe/Fe cell at 200 A m-2 and natural pH allowed >5 log unit removal of E. coli and final concentration below 1 bacteria mL-1 of coliphages and eukaryotes from both effluents in ca. 60 min, whereas heterotrophic bacteria, enterococci and spores were more resistant. A larger removal was obtained for the primary effluent, probably because the flocs remove higher amount of total organic carbon (TOC), entrapping more easily the microbiota. EF with a boron-doped diamond (BDD) anode and an air-diffusion cathode that produces H2O2 on site was first performed at pH 3.0, with large or even total inactivation of microorganisms within 30 min. A more effective microorganism removal was attained as compared to EC thanks to •OH formed from Fenton's reaction. A quicker disinfection was observed for the secondary effluent owing to its lower TOC content, allowing the attack of greater quantities of electrogenerated oxidants on microorganisms. Wastewater disinfection by EF was also feasible at natural pH (∼7), showing similar abatement of active microorganisms as a result of the synergistic action of generated oxidants like active chlorine and coagulation with iron hydroxides. A sequential EC/EF treatment (30 min each) was more effective for a combined decontamination and disinfection of urban wastewater.
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Affiliation(s)
- Eduard Anfruns-Estrada
- Sec. Microbiologia, Virologia i Biotecnologia, Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, 08028 Barcelona, Spain
| | - Carmina Bruguera-Casamada
- Sec. Microbiologia, Virologia i Biotecnologia, Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, 08028 Barcelona, Spain
| | - Humbert Salvadó
- Sec. Microbiologia, Virologia i Biotecnologia, Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, 08028 Barcelona, Spain; Laboratori de Protistologia, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, 08028 Barcelona, Spain
| | - Enric Brillas
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Ignasi Sirés
- Laboratori d'Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Rosa M Araujo
- Sec. Microbiologia, Virologia i Biotecnologia, Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal 643, 08028 Barcelona, Spain.
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Fernandes A, Labiadh L, Ciríaco L, Pacheco MJ, Gadri A, Ammar S, Lopes A. Electro-Fenton oxidation of reverse osmosis concentrate from sanitary landfill leachate: Evaluation of operational parameters. CHEMOSPHERE 2017; 184:1223-1229. [PMID: 28672722 DOI: 10.1016/j.chemosphere.2017.06.088] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/17/2017] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
The electro-Fenton oxidation of a concentrate from reverse osmosis of a sanitary landfill leachate, with an initial chemical oxygen demand (COD) of 42 g L-1, was carried out using a carbon-felt cathode and a boron doped diamond anode. The influence of the applied current intensity, initial pH and dissolved iron initial concentration on the electro-Fenton process was assessed. For the experimental conditions used, results showed that the initial pH is the parameter that more strongly influences the current efficiency of the electro-Fenton process, being this influence more pronounced on the oxidation rate than on the mineralization rate of the organic matter. The increase in iron initial concentration was found to be detrimental, since the natural amount of iron present in the effluent, 73 mg L-1 of total iron and 61 mg L-1 of dissolved iron, was sufficient to ensure the electro-Fenton process at the applied intensities - 0.2-1.4 A. For the more favourable conditions studied, initial pH of 3 and natural iron concentration, it was found an increase in the organic load and nitrogen removals with the applied current intensity. For the highest current intensity applied, a COD removal of 16.7 g L-1 was achieved after 8-h experiments.
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Affiliation(s)
- Annabel Fernandes
- FibEnTech Unit and Department of Chemistry, University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Lazhar Labiadh
- Unité de Recherche Electrochimie, Matériaux et Environnement (UREME), Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès, Tunisia.
| | - Lurdes Ciríaco
- FibEnTech Unit and Department of Chemistry, University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Maria José Pacheco
- FibEnTech Unit and Department of Chemistry, University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Abdellatif Gadri
- Unité de Recherche Electrochimie, Matériaux et Environnement (UREME), Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès, Tunisia
| | - Salah Ammar
- Unité de Recherche Electrochimie, Matériaux et Environnement (UREME), Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès, Tunisia; Département de Chimie, Faculté des Sciences de Bizerte, Université de Carthage, 7021 Jarzouna, Tunisia
| | - Ana Lopes
- FibEnTech Unit and Department of Chemistry, University of Beira Interior, 6201-001 Covilhã, Portugal
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Feng SJ, Bai ZB, Cao BY, Lu SF, Ai SG. The use of electrical resistivity tomography and borehole to characterize leachate distribution in Laogang landfill, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:20811-20817. [PMID: 28791528 DOI: 10.1007/s11356-017-9853-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/31/2017] [Indexed: 06/07/2023]
Abstract
Leachate is a polluting liquid which may cause harmful effects on human health or the environment without a tightly control manner. The leachate management is an important part of the design and operation of bioreactor landfills. To detect the leachate distribution in Laogang Landfill, China, the measurement of electrical resistivity tomography (ERT) was carried out in three areas with different ages. ERT method proved to be an effective non-invasive geophysical method in bioreactor landfills, and the physical properties of waste samples obtained by boreholes were tested in a laboratory. The correlation between the resistivity and the moisture content was described by Archie's law. The result shows that the moisture content of fresh waste is inhomogeneous, while that of aged waste increases with depth. A pseudo 3D model of the moisture content was proposed to improve the understanding of leachate distribution and exhibit the accuracy of the ERT method.
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Affiliation(s)
- Shi-Jin Feng
- Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Si Ping Road 1239, Shanghai, 200092, China.
| | - Zhen-Bai Bai
- Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Si Ping Road 1239, Shanghai, 200092, China
| | - Ben-Yi Cao
- Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Si Ping Road 1239, Shanghai, 200092, China
| | - Shi-Feng Lu
- Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Si Ping Road 1239, Shanghai, 200092, China
| | - Shu-Gang Ai
- Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Si Ping Road 1239, Shanghai, 200092, China
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Valero P, Verbel M, Silva-Agredo J, Mosteo R, Ormad MP, Torres-Palma RA. Electrochemical advanced oxidation processes for Staphylococcus aureus disinfection in municipal WWTP effluents. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 198:256-265. [PMID: 28475964 DOI: 10.1016/j.jenvman.2017.04.070] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 04/23/2017] [Indexed: 05/03/2023]
Abstract
This paper presents the Staphylococcus aureus inactivation in a simulated wastewater treatment plant effluent by different electrochemical techniques, including the photo-electro-Fenton process. S. aureus, dissolved organic carbon (DOC), total oxidants and H2O2 concentrations, as well as pH, were monitored during the assays. An electrolytic cell, including a UVA lamp, a gas diffusion electrode (GDE) as cathode and an IrO2 anode, was used to conduct the experiments under galvanostatic conditions (20 mA). Low inactivation (-0.4) and low DOC removal were achieved within 120 min when applying the GDE-IrO2 system, in which bacteria disinfection was caused by the generated H2O2. When light was combined with GDE-IrO2, the process efficiency noticeably increased (-3.7 log inactivation) due to the synergistic effect between UVA and H2O2. Introducing iron (5 mg L-1 Fe2+) into the system also produced higher disinfection and DOC mineralization. The electro-Fenton process (GDE-IrO2+Fe2+) led to a bacterial reduction of -0.9 log units and DOC reduction of 14%, while with the photo-electro-Fenton process (GDE-IrO2+UVA + Fe2+) -5.2 units of bacteria and 26% of DOC were removed. Increasing the current intensity (20 mA, 30 mA and 40 mA) in the photo-electro-Fenton system increased H2O2 production and, consequently, augmented the bacterial inactivation (-5.2 log, -6.2 log and -6.5 log, respectively). However, mineralization extent slightly increased or remained practically the same. When comparing the influence of Fe2+ and Fe3+ on photo-electro-Fenton, similar S. aureus inactivation was observed, while DOC removal was higher with Fe2+ (31%) than with Fe3+ (19%). Finally, by testing the system with a Ti anode, the direct anodic oxidation contribution of the IrO2 anode was identified as negligible.
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Affiliation(s)
- Pilar Valero
- Grupo Calidad y Tratamiento de Aguas, Departamento de Ingeniería Química y Tecnologías del Medio Ambiente, Universidad de Zaragoza, Calle María de Luna 3, 50018 Zaragoza, Spain
| | - Martha Verbel
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Javier Silva-Agredo
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Rosa Mosteo
- Grupo Calidad y Tratamiento de Aguas, Departamento de Ingeniería Química y Tecnologías del Medio Ambiente, Universidad de Zaragoza, Calle María de Luna 3, 50018 Zaragoza, Spain
| | - Maria P Ormad
- Grupo Calidad y Tratamiento de Aguas, Departamento de Ingeniería Química y Tecnologías del Medio Ambiente, Universidad de Zaragoza, Calle María de Luna 3, 50018 Zaragoza, Spain
| | - Ricardo A Torres-Palma
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, UdeA, Calle 70 No. 52-21, Medellín, Colombia.
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19
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Morozesk M, Bonomo MM, Rocha LD, Duarte ID, Zanezi ERL, Jesus HC, Fernandes MN, Matsumoto ST. Landfill leachate sludge use as soil additive prior and after electrocoagulation treatment: A cytological assessment using CHO-k1 cells. CHEMOSPHERE 2016; 158:66-71. [PMID: 27243586 DOI: 10.1016/j.chemosphere.2016.05.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/05/2016] [Accepted: 05/17/2016] [Indexed: 06/05/2023]
Abstract
Electrocoagulation has recently attracted attention as a potential technique for treating toxic effluents due to its versatility and environmental compatibility, generating a residue chemically suitable to be used as a soil additive. In the present study, landfill leachate sludge hazardous effects were investigated prior and after electrocoagulation process using in vitro assays with the mammalian cells CHO-k1. An integrated strategy for risk assessment was used to correctly estimate the possible adverse landfill leachate sludge effects on human health and ecosystem. Electrocoagulation process proved to be an effective treatment due to possibility to improve effluent adverse characteristics and produce sludge with potential to be used as soil additive. Despite low cytoxicity, the residue presented genotoxic and mutagenic effects, indicating a capacity to induce genetic damages, probably due to induction of polyploidization process in cells. The observed effects demand an improvement of waste management methods for reduce negative risks of landfill leachate sludge application.
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Affiliation(s)
- M Morozesk
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - M M Bonomo
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - L D Rocha
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - I D Duarte
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - E R L Zanezi
- Departamento de Química, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - H C Jesus
- Departamento de Química, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
| | - M N Fernandes
- Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos - UFSCar, CEP 13565-905, São Carlos, São Paulo, Brazil.
| | - S T Matsumoto
- Departamento de Ciências Biológicas, Universidade Federal do Espírito Santo - UFES, CEP 29075-910, Vitória, Espirito Santo, Brazil.
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Abstract
The aim of our research was to find the better treatment progress for landfill leachate. It elaborated the source and the quality variation law with time change and harm to human body of the leachate. Listed all kinds of treatment methods, including physical, chemical, biological. Thought the development trends of landfill leachate treatment was the combination of multiple progress.
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