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Pu L, Xia Q, Wang Y, Bu Y, Zhang Q, Gao G. Tailored nanofiltration membranes with enhanced permeability and antifouling performance towards leachate treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Babaei S, Sabour MR, Moftakhari Anasori Movahed S. Combined landfill leachate treatment methods: an overview. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59594-59607. [PMID: 34510344 DOI: 10.1007/s11356-021-16358-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Landfill leachate is commonly heavily contaminated and consists of high amount of organic compounds, inorganic salts, toxic gases, halogenated hydrocarbons, and heavy metals that exerts a serious threat to public health and the environment. Thus, it requires treatments before direct release into receiving waters. Selecting the efficient method for leachate treatment is still a major challenge. While physicochemical treatment methods such as coagulation-flocculation, adsorption, membrane filtration, ozonation, air stripping, and advanced oxidation processes (AOP) are appropriate for mature leachate, young leachate requires biological treatments including membrane bioreactor (MBR), activated sludge (AS), upflow anaerobic sludge blanket (UASB), and rotational biological contactor (RBC). Recently, the integration of biological processes and physicochemical methods has been demonstrated to be very efficient. It is found that combined coagulation-flocculation/nanofiltration and activated sludge/reverse osmosis are more efficacious than other integrated physicochemical methods and combined physicochemical/biological methods, respectively.
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Affiliation(s)
- Shamimeh Babaei
- Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
| | - Mohammad Reza Sabour
- Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
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Brasil YL, Moreira VR, Lebron YAR, Moravia WG, Amaral MCS. Combining yeast MBR, Fenton and nanofiltration for landfill leachate reclamation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 132:105-114. [PMID: 34329924 DOI: 10.1016/j.wasman.2021.07.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/19/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
This study investigated the best way to combine nanofiltration (NF) and Fenton with membrane bioreactor inoculated with Saccharomyces cerevisiae (MBRy) for the treatment of landfill leachate, aiming at compliance with legislation and water reuse. Firstly, the permeate from MBRy was treated by Fenton process followed by NF (MBRy - Fenton - NF). Another alternative evaluated was the polishment of MBRy permeate by NF and treatment of NF concentrate by Fenton process (MBRy - NF - Fenton(concentrate)). COD removal in the Fenton step was optimized according to central composite design (CCD) and 85.5% removal was obtained at pH = 3, Fe2+:H2O2 molar ratio = 1:9.81 and C:H2O2 molar ratio = 1:1.14. Increased toxicity was observed with the Fenton application (EC50 = 2.45%). The NF showed the best performance treating the MBRy permeate. High permeate flux (8.9 ± 1.6 L h-1 m-2) and ion rejection (82 ± 4.2%), and low membrane fouling was observed in this condition. Although both NF permeate presented potential for reuse, the final COD concentration was lower in the MBRy - Fenton effluent (88 mg L-1). The Fenton application for the NF concentrate was able to remove 87.24% of COD. With a preliminary economic analysis, it was verified that the MBRy - NF - Fenton(concentrate) combination is the most advantageous due to the lower chemical reagent and membrane area requirements. Thus, this route presents itself as an alternative for landfill leachate reclamation.
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Affiliation(s)
- Yara L Brasil
- Department of Sanitary and Environmental Engineering - Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil.
| | - Victor R Moreira
- Department of Sanitary and Environmental Engineering - Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil
| | - Yuri A R Lebron
- Department of Sanitary and Environmental Engineering - Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil
| | - Wagner G Moravia
- Department of Environmental Science and Technology, Federal Center of Technological Education of Minas Gerais, ZIP 30.421-169, Belo Horizonte, MG, Brazil
| | - Míriam C S Amaral
- Department of Sanitary and Environmental Engineering - Federal University of Minas Gerais, P.O. Box 1294, ZIP 30.270-901, Belo Horizonte, MG, Brazil
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Lebron YAR, Moreira VR, Brasil YL, Silva AFR, Santos LVDS, Lange LC, Amaral MCS. A survey on experiences in leachate treatment: Common practices, differences worldwide and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 288:112475. [PMID: 33823445 DOI: 10.1016/j.jenvman.2021.112475] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/12/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
The necessity for landfill leachate treatment is a requisite to reduce the environmental impact related to municipal solid waste landfills and different aspects must be considered while deciding for an appropriate treatment process. For example, it was demonstrated that the landfill leachate stabilization in tropical regions is achieved right after its first year of operation, requiring technologies capable of treating leachates of a higher recalcitrant character if compared to those leachates from temperate regions and same landfill age. In view of its complexity and variability, stand-alone processes (either biological or physicochemical) are often ineffective in attaining the threshold values for its discharge in receiving bodies. Due to that fact, full-scale facilities have adopted integrated routes, harvesting the benefits of both biological and physicochemical processes. The implementation of membrane bioreactors followed by polishing membrane separation process (nanofiltration and reverse osmosis) seems to be a trend in leachate treatment by full-scale treatment plants. This technology is widely employed in China, European countries, and tropical countries as Brazil, generally with a treatment cost lower than the costs related to its disposal in domestic effluent collection systems. From the technologies already employed by full-scale facilities, four integrated routes were proposed for a sensitive analysis considering the treatment of a landfill leachate of different physicochemical characteristics. From all routes, those employing the membrane separation process as a polishing step had a better efficacy in attaining the threshold values for leachate disposal, being that an interesting alternative for leachate polishing by full-scale facilities.
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Affiliation(s)
- Yuri Abner Rocha Lebron
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil.
| | - Victor Rezende Moreira
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil.
| | - Yara Luiza Brasil
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Ana Flávia Rezende Silva
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Lucilaine Valéria de Souza Santos
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Liséte Celina Lange
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Míriam Cristina Santos Amaral
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
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da Silva RI, Brandão ECV, Brito JCMD, Figueiredo KCDS. Analysis of fouling mechanisms and membrane cleaning during ultrafiltration of bee venom. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1577455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Rafael Isidoro da Silva
- Department of Chemical Engineering, College of Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Evelin Campos Verdolin Brandão
- Department of Chemical Engineering, College of Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Kátia Cecília de Souza Figueiredo
- Department of Chemical Engineering, College of Engineering, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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