The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Ana Lopes - One of the best experts on this subject based on the ideXlab platform.
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Ecotoxicological evaluation of electrochemical oxidation for the treatment of Sanitary Landfill leachates.
Environmental science and pollution research international, 2018Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Manuel Ramiro Dias Pastorinho, Ana Catarina Sousa, Wilson Araújo Da Silva, Rodrigo Fortes Da Silva, M.j. Nunes, Ana Sofia Rodrigues, Ana LopesAbstract:In this study, the efficiency of electrochemical oxidation to treat a Sanitary Landfill leachate was evaluated by the reduction in physico-chemical parameters and in ecotoxicity. The acute toxicity of the Sanitary Landfill leachates, before and after treatment, was assessed with the model organism Daphnia magna. Electrochemical oxidation treatment was effective in the removal of organic load and ammonium nitrogen and in the reduction of metal ions concentrations. Furthermore, a reduction of 2.5-fold in the acute toxicity towards D. magna after 36 h of treatment was noticed. Nevertheless, the toxicity of the treated leachate is still very high, and further treatments are necessary in order to obtain a non-toxic effluent to this aquatic organism. Toxicity results were also compared with others described in the literature for different leachate treatments and test organisms.
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Review on the electrochemical processes for the treatment of Sanitary Landfill leachates: Present and future
Applied Catalysis B-environmental, 2015Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Ana LopesAbstract:Abstract Due to its properties and composition, Sanitary Landfill leachate is one of the major environmental problems concerning water pollution. The optimization of the leachate treatment, in order to fully reduce the negative impact on the environment, is a nowadays challenge. Advanced technologies for the treatment of Sanitary Landfill leachates have received increasing attention over the past decade. This paper presents a general review of efficient electrochemical technologies developed to decontaminate Sanitary Landfill leachates. An overview of the fundamental aspects of electrochemical methods, such as electrocoagulation, electro-Fenton and electrochemical oxidation, is provided and updated information on the application of these technologies to Sanitary Landfill leachates is given. The effect of the main process variables of these electrochemical technologies in the Sanitary Landfill leachates treatment effectiveness is discussed and a critical analysis of the prime benefits and drawbacks of its application is made.
Annabel Fernandes - One of the best experts on this subject based on the ideXlab platform.
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Ecotoxicological evaluation of electrochemical oxidation for the treatment of Sanitary Landfill leachates.
Environmental science and pollution research international, 2018Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Manuel Ramiro Dias Pastorinho, Ana Catarina Sousa, Wilson Araújo Da Silva, Rodrigo Fortes Da Silva, M.j. Nunes, Ana Sofia Rodrigues, Ana LopesAbstract:In this study, the efficiency of electrochemical oxidation to treat a Sanitary Landfill leachate was evaluated by the reduction in physico-chemical parameters and in ecotoxicity. The acute toxicity of the Sanitary Landfill leachates, before and after treatment, was assessed with the model organism Daphnia magna. Electrochemical oxidation treatment was effective in the removal of organic load and ammonium nitrogen and in the reduction of metal ions concentrations. Furthermore, a reduction of 2.5-fold in the acute toxicity towards D. magna after 36 h of treatment was noticed. Nevertheless, the toxicity of the treated leachate is still very high, and further treatments are necessary in order to obtain a non-toxic effluent to this aquatic organism. Toxicity results were also compared with others described in the literature for different leachate treatments and test organisms.
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electrochemical treatment of concentrate from reverse osmosis of Sanitary Landfill leachate
Journal of Environmental Management, 2016Co-Authors: Annabel Fernandes, Lazhar Labiadh, L Ciriaco, M J Pacheco, Abdellatif Gadri, Salah Ammar, A LopesAbstract:Conventional Sanitary Landfill leachate treatment has recently been complemented and, in some cases, completely replaced by reverse osmosis technology. Despite the good quality of treated water, the efficiency of the process is low and a large volume of reverse osmosis concentrate has to be either discharged or further treated. In this study, the use of anodic oxidation combined with electro-Fenton processes to treat the concentrate obtained in the reverse osmosis of Sanitary Landfill leachate was evaluated. The anodic oxidation pretreatment was performed in a pilot plant using an electrochemical cell with boron-doped diamond electrodes. In the electro-Fenton experiments, a boron-doped diamond anode and carbon-felt cathode were used, and the influence of the initial pH and iron concentration were studied. For the experimental conditions, the electro-Fenton assays performed at an initial pH of 3 had higher organic load removal levels, whereas the best nitrogen removal was attained when the electrochemical process was performed at the natural pH of 8.8. The increase in the iron concentration had an adverse impact on treatment under natural pH conditions, but it enhanced the nitrogen removal in the electro-Fenton assays performed at an initial pH of 3. The combined anodic oxidation and electro-Fenton process is useful for treating the reverse osmosis concentrate because it is effective at removing the organic load and nitrogen-containing species. Additionally, this process potentiates the increase in the biodegradability index of the treated effluent.
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Review on the electrochemical processes for the treatment of Sanitary Landfill leachates: Present and future
Applied Catalysis B-environmental, 2015Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Ana LopesAbstract:Abstract Due to its properties and composition, Sanitary Landfill leachate is one of the major environmental problems concerning water pollution. The optimization of the leachate treatment, in order to fully reduce the negative impact on the environment, is a nowadays challenge. Advanced technologies for the treatment of Sanitary Landfill leachates have received increasing attention over the past decade. This paper presents a general review of efficient electrochemical technologies developed to decontaminate Sanitary Landfill leachates. An overview of the fundamental aspects of electrochemical methods, such as electrocoagulation, electro-Fenton and electrochemical oxidation, is provided and updated information on the application of these technologies to Sanitary Landfill leachates is given. The effect of the main process variables of these electrochemical technologies in the Sanitary Landfill leachates treatment effectiveness is discussed and a critical analysis of the prime benefits and drawbacks of its application is made.
Maria José Pacheco - One of the best experts on this subject based on the ideXlab platform.
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Ecotoxicological evaluation of electrochemical oxidation for the treatment of Sanitary Landfill leachates.
Environmental science and pollution research international, 2018Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Manuel Ramiro Dias Pastorinho, Ana Catarina Sousa, Wilson Araújo Da Silva, Rodrigo Fortes Da Silva, M.j. Nunes, Ana Sofia Rodrigues, Ana LopesAbstract:In this study, the efficiency of electrochemical oxidation to treat a Sanitary Landfill leachate was evaluated by the reduction in physico-chemical parameters and in ecotoxicity. The acute toxicity of the Sanitary Landfill leachates, before and after treatment, was assessed with the model organism Daphnia magna. Electrochemical oxidation treatment was effective in the removal of organic load and ammonium nitrogen and in the reduction of metal ions concentrations. Furthermore, a reduction of 2.5-fold in the acute toxicity towards D. magna after 36 h of treatment was noticed. Nevertheless, the toxicity of the treated leachate is still very high, and further treatments are necessary in order to obtain a non-toxic effluent to this aquatic organism. Toxicity results were also compared with others described in the literature for different leachate treatments and test organisms.
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Review on the electrochemical processes for the treatment of Sanitary Landfill leachates: Present and future
Applied Catalysis B-environmental, 2015Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Ana LopesAbstract:Abstract Due to its properties and composition, Sanitary Landfill leachate is one of the major environmental problems concerning water pollution. The optimization of the leachate treatment, in order to fully reduce the negative impact on the environment, is a nowadays challenge. Advanced technologies for the treatment of Sanitary Landfill leachates have received increasing attention over the past decade. This paper presents a general review of efficient electrochemical technologies developed to decontaminate Sanitary Landfill leachates. An overview of the fundamental aspects of electrochemical methods, such as electrocoagulation, electro-Fenton and electrochemical oxidation, is provided and updated information on the application of these technologies to Sanitary Landfill leachates is given. The effect of the main process variables of these electrochemical technologies in the Sanitary Landfill leachates treatment effectiveness is discussed and a critical analysis of the prime benefits and drawbacks of its application is made.
Lurdes Ciríaco - One of the best experts on this subject based on the ideXlab platform.
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Ecotoxicological evaluation of electrochemical oxidation for the treatment of Sanitary Landfill leachates.
Environmental science and pollution research international, 2018Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Manuel Ramiro Dias Pastorinho, Ana Catarina Sousa, Wilson Araújo Da Silva, Rodrigo Fortes Da Silva, M.j. Nunes, Ana Sofia Rodrigues, Ana LopesAbstract:In this study, the efficiency of electrochemical oxidation to treat a Sanitary Landfill leachate was evaluated by the reduction in physico-chemical parameters and in ecotoxicity. The acute toxicity of the Sanitary Landfill leachates, before and after treatment, was assessed with the model organism Daphnia magna. Electrochemical oxidation treatment was effective in the removal of organic load and ammonium nitrogen and in the reduction of metal ions concentrations. Furthermore, a reduction of 2.5-fold in the acute toxicity towards D. magna after 36 h of treatment was noticed. Nevertheless, the toxicity of the treated leachate is still very high, and further treatments are necessary in order to obtain a non-toxic effluent to this aquatic organism. Toxicity results were also compared with others described in the literature for different leachate treatments and test organisms.
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Review on the electrochemical processes for the treatment of Sanitary Landfill leachates: Present and future
Applied Catalysis B-environmental, 2015Co-Authors: Annabel Fernandes, Maria José Pacheco, Lurdes Ciríaco, Ana LopesAbstract:Abstract Due to its properties and composition, Sanitary Landfill leachate is one of the major environmental problems concerning water pollution. The optimization of the leachate treatment, in order to fully reduce the negative impact on the environment, is a nowadays challenge. Advanced technologies for the treatment of Sanitary Landfill leachates have received increasing attention over the past decade. This paper presents a general review of efficient electrochemical technologies developed to decontaminate Sanitary Landfill leachates. An overview of the fundamental aspects of electrochemical methods, such as electrocoagulation, electro-Fenton and electrochemical oxidation, is provided and updated information on the application of these technologies to Sanitary Landfill leachates is given. The effect of the main process variables of these electrochemical technologies in the Sanitary Landfill leachates treatment effectiveness is discussed and a critical analysis of the prime benefits and drawbacks of its application is made.
J.a. Chase - One of the best experts on this subject based on the ideXlab platform.
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Sanitary Landfill Groundwater Monitoring Report - Third and Fourth Quarters 2000 and 2000 Summary
2001Co-Authors: J.a. ChaseAbstract:A maximum of forty wells of the LFW series monitor groundwater quality in the Steed Pond Aquifer (Water Table) beneath the Sanitary Landfill Area at the Savannah River Site (SRS). These wells are sampled quarterly to comply with the South Carolina Department of Health and Environmental Control Domestic Waste Permit DWP-087A and as part of the Sanitary Landfill Groundwater Quality Assessment Plan. Chloroethene (vinyl chloride) and trichloroethylene were the most widespread constituent exceeding the Final Primary Drinking Water Standards during the calendar year 2000. 1,4-Dichlorobenzene, benzene, dichloromethane (methylene chloride), gross alpha, lead (total recoverable) mercury (total recoverable), thallium (total recoverable), and tritium also exceeded standards in one or more wells. The groundwater flow direction in the Steed Pond Aquifer (Water Table) beneath the Sanitary Landfill is to the southeast (universal transverse Mercator coordinates). The flow rate at this unit was approximately 122.64 ft/year during first quarter 2000 and 132.28 ft/year during fourth quarter 2000.
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Sanitary Landfill groundwater monitoring report: First quarter 1997
1997Co-Authors: J.a. ChaseAbstract:This report contains analytical data for samples taken during first quarter 1997 from wells of the LFW series located at the Sanitary Landfill at the Savannah River Site (SRS). The data are submitted in reference to the Sanitary Landfill Operating permit (DWP-087A). The report presents monitoring results that equaled or exceeded the Safe Drinking Water Act final primary Drinking Water Standards (PDWS) or screening levels, established by the U.S. Environmental Protection Agency, the South Carolina final Primary Drinking Water Standard for lead, or the SRS flagging criteria. Wells LFW6R, LFW8R, LFW10A, LFW18, LFW21, and LFW23R were not sampled due to their proximity to the Sanitary Landfill Closure Cap activities. Wells LFW61D and LFW62D are Purge Water Containment Wells and contain mercury. These wells were not sampled since the purge water cannot be treated at the M-1 Air Stripper until the NPDES permit for the stripper is modified.
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Sanitary Landfill Groundwater Monitoring Report. Second Quarter 1995
1995Co-Authors: J.a. ChaseAbstract:This report contains analytical data for samples taken during second quarter 1995 from wells of the LFW series located at the Sanitary Landfill at the Savannah River Site (SRS). The data are submitted in reference to the Sanitary Landfill Operating Permit (DWP-087A). The report presents monitoring results that equaled or exceeded the Safe Drinking Water Act final Primary Water Standards (PDWS) or screening levels, established by the US Environmental Protection Agency (Appendix A), the South Carolina final Primary Drinking Water Standard for lead (Appendix A), or the SRS flagging criteria (Appendix B).
