Arsenic removal by electrocoagulation process: Recent trends and removal mechanism
Arsenic contamination in drinking water is a major issue in the present world. Arsenicosis is the disease caused by the regular consumption of arsenic contaminated water, even at a lesser contaminated level. The number of arsenicosis patients is increasing day-by-day. Decontamination of arsenic from...
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| Veröffentlicht in: | Chemosphere (Oxford) 2017-08, Vol.181, p.418-432 |
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| creator | Nidheesh, P.V. Singh, T.S. Anantha |
| description | Arsenic contamination in drinking water is a major issue in the present world. Arsenicosis is the disease caused by the regular consumption of arsenic contaminated water, even at a lesser contaminated level. The number of arsenicosis patients is increasing day-by-day. Decontamination of arsenic from the water medium is the only one way to regulate this and the arsenic removal can be fulfilled by water treatment methods based on separation techniques. Electrocoagulation (EC) process is a promising technology for the effective removal of arsenic from aqueous solution. The present review article analyzes the performance of the EC process for arsenic removal. Electrocoagulation using various sacrificial metal anodes such as aluminium, iron, magnesium, etc. is found to be very effective for arsenic decontamination. The performances of each anode are described in detail. A special focus has been made on the mechanism behind the arsenite and arsenate removal by EC process. Main trends in the disposal methods of sludge containing arsenic are also included. Comparison of arsenic decontamination efficiencies of chemical coagulation and EC is also reported.
•Recent trends in arsenic removal by electrocoagulation are explained.•Arsenic removal mechanism of electrocoagulation process are described in detail.•Various sludge disposal methods are described.•Real-field implementation problems for electrocoagulation process are analyzed. |
| doi_str_mv | 10.1016/j.chemosphere.2017.04.082 |
| format | Article |
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•Recent trends in arsenic removal by electrocoagulation are explained.•Arsenic removal mechanism of electrocoagulation process are described in detail.•Various sludge disposal methods are described.•Real-field implementation problems for electrocoagulation process are analyzed.</description><subject>aluminum</subject><subject>anodes</subject><subject>aqueous solutions</subject><subject>arsenates</subject><subject>Arsenic</subject><subject>Arsenic - isolation & purification</subject><subject>Arsenic - toxicity</subject><subject>Arsenicosis</subject><subject>arsenites</subject><subject>coagulation</subject><subject>decontamination</subject><subject>drinking water</subject><subject>Electrochemical method</subject><subject>Electrocoagulation</subject><subject>Electrocoagulation - methods</subject><subject>Electrocoagulation - trends</subject><subject>Humans</subject><subject>iron</subject><subject>magnesium</subject><subject>patients</subject><subject>sludge</subject><subject>Water Pollutants, Chemical - isolation & purification</subject><subject>Water Pollutants, Chemical - toxicity</subject><subject>Water Purification - methods</subject><subject>Water treatment</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkNtKAzEQhoMoWg-vIOudN7tOsjnseleKJygIRa9DNjtrU_ZQk63QtzelKt7p1TDw_f8MHyFXFDIKVN6sMrvEbgjrJXrMGFCVAc-gYAdkQgtVppSVxSGZAHCRSpGLE3IawgoghkV5TE5YwUXBqJqQxdQH7J1NfCz8MG1SbRNs0Y5-sIN527RmdEOfrOOKIdwmC7TYj8nosa9DYvr6J9ihXZrehe6cHDWmDXjxNc_I6_3dy-wxnT8_PM2m89RyJce0NkoZZKKmleHcAhQqL2WpTCXjb8zmTdNQLkAAY6qqJTLLmVI5QC4QpMrPyPW-Nz73vsEw6s4Fi21rehw2QTPYoQpU_idKizIvFeVSRrTco9YPIXhs9Nq7zvitpqB39vVK_7Kvd_Y1cB3tx-zl15lN1WH9k_zWHYHZHsDo5cOh18E67C3Wzkfnuh7cP858AgUqm6c</recordid><startdate>20170801</startdate><enddate>20170801</enddate><creator>Nidheesh, P.V.</creator><creator>Singh, T.S. 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Electrocoagulation (EC) process is a promising technology for the effective removal of arsenic from aqueous solution. The present review article analyzes the performance of the EC process for arsenic removal. Electrocoagulation using various sacrificial metal anodes such as aluminium, iron, magnesium, etc. is found to be very effective for arsenic decontamination. The performances of each anode are described in detail. A special focus has been made on the mechanism behind the arsenite and arsenate removal by EC process. Main trends in the disposal methods of sludge containing arsenic are also included. Comparison of arsenic decontamination efficiencies of chemical coagulation and EC is also reported.
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| subjects | aluminum anodes aqueous solutions arsenates Arsenic Arsenic - isolation & purification Arsenic - toxicity Arsenicosis arsenites coagulation decontamination drinking water Electrochemical method Electrocoagulation Electrocoagulation - methods Electrocoagulation - trends Humans iron magnesium patients sludge Water Pollutants, Chemical - isolation & purification Water Pollutants, Chemical - toxicity Water Purification - methods Water treatment |
| title | Arsenic removal by electrocoagulation process: Recent trends and removal mechanism |
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