Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode
Large amounts of anions and heavy metals coexist in flue gas desulfurization (FGD) wastewater originating from coal-fired power plants, which cause serious environmental pollution. Electrocoagulation (EC) with Fe/C/Al hybrid electrodes was investigated for the separation of fluoride and nickel ions...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2017-09-01
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| Series: | Journal of Water Reuse and Desalination |
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| Online Access: | http://jwrd.iwaponline.com/content/7/3/288 |
| _version_ | 1818055488496992256 |
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| author | Shinian Liu Xiaokun Ye Kuang He Yuancai Chen Yongyou Hu |
| author_facet | Shinian Liu Xiaokun Ye Kuang He Yuancai Chen Yongyou Hu |
| author_sort | Shinian Liu |
| collection | DOAJ |
| description | Large amounts of anions and heavy metals coexist in flue gas desulfurization (FGD) wastewater originating from coal-fired power plants, which cause serious environmental pollution. Electrocoagulation (EC) with Fe/C/Al hybrid electrodes was investigated for the separation of fluoride and nickel ions from a FGD wastewater. The study mainly focused on the technology parameters including anode electrode type, time, inter-electrode distance (5–40 mm), current density (1.88–6.25 mA/cm2) and initial pH (4–10). The results showed that favorable nickel and fluoride removal were obtained by increasing the time and current density, but this led to an increase in energy consumption. Eighty-six percent of fluoride and 98% of Ni(II) were removed by conducting the Fe/C/Al EC with a current density of 5.00 mA/cm2 and inter-electrode distance of 5 mm at pH 4 for 25 min and energy consumption was 1.33 kWh/m3. Concomitant pollutants also achieved excellent treatment efficiency. The Hg, Mn, Pb, Cd, Cu, SS and chemical oxygen demand were reduced by 90%, 89%, 92%, 88%, 98%, 99.9% and 89%, respectively, which met stringent environmental regulations. |
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| id | doaj.art-30db9f9b712642d9b0b26de101dd5744 |
| institution | Directory Open Access Journal |
| issn | 2220-1319 2408-9370 |
| language | English |
| last_indexed | 2024-12-10T12:13:45Z |
| publishDate | 2017-09-01 |
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| series | Journal of Water Reuse and Desalination |
| spelling | doaj.art-30db9f9b712642d9b0b26de101dd57442022-12-22T01:49:16ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702017-09-017328829710.2166/wrd.2016.010010Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrodeShinian Liu0Xiaokun Ye1Kuang He2Yuancai Chen3Yongyou Hu4 Electric Power Research Institute of Guangdong Power Grid Co. Ltd, Guangzhou 510080, China Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, State Key Laboratory of Pulp and Paper Engineering, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: chenyc@scut.edu.cn Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, State Key Laboratory of Pulp and Paper Engineering, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: chenyc@scut.edu.cn Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, State Key Laboratory of Pulp and Paper Engineering, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: chenyc@scut.edu.cn Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, State Key Laboratory of Pulp and Paper Engineering, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: chenyc@scut.edu.cn Large amounts of anions and heavy metals coexist in flue gas desulfurization (FGD) wastewater originating from coal-fired power plants, which cause serious environmental pollution. Electrocoagulation (EC) with Fe/C/Al hybrid electrodes was investigated for the separation of fluoride and nickel ions from a FGD wastewater. The study mainly focused on the technology parameters including anode electrode type, time, inter-electrode distance (5–40 mm), current density (1.88–6.25 mA/cm2) and initial pH (4–10). The results showed that favorable nickel and fluoride removal were obtained by increasing the time and current density, but this led to an increase in energy consumption. Eighty-six percent of fluoride and 98% of Ni(II) were removed by conducting the Fe/C/Al EC with a current density of 5.00 mA/cm2 and inter-electrode distance of 5 mm at pH 4 for 25 min and energy consumption was 1.33 kWh/m3. Concomitant pollutants also achieved excellent treatment efficiency. The Hg, Mn, Pb, Cd, Cu, SS and chemical oxygen demand were reduced by 90%, 89%, 92%, 88%, 98%, 99.9% and 89%, respectively, which met stringent environmental regulations.http://jwrd.iwaponline.com/content/7/3/288current densitydefluorinationelectrocoagulationFe/C/AlFGD wastewaternickel removal |
| spellingShingle | Shinian Liu Xiaokun Ye Kuang He Yuancai Chen Yongyou Hu Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode Journal of Water Reuse and Desalination current density defluorination electrocoagulation Fe/C/Al FGD wastewater nickel removal |
| title | Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode |
| title_full | Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode |
| title_fullStr | Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode |
| title_full_unstemmed | Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode |
| title_short | Simultaneous removal of Ni(II) and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using Fe/C/Al electrode |
| title_sort | simultaneous removal of ni ii and fluoride from a real flue gas desulfurization wastewater by electrocoagulation using fe c al electrode |
| topic | current density defluorination electrocoagulation Fe/C/Al FGD wastewater nickel removal |
| url | http://jwrd.iwaponline.com/content/7/3/288 |
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