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Electrodisinfection of bacteria-laden in surface water using modified Ti electrode by antimony-and nickel-doped tin oxide composite
Providing clean and safe drinking water by point of use (POU) disinfection methods has become a critical issue, especially in crises and epidemics. In this study, antimony-and nickel-doped tin oxide electrode (Ni–Sb–SnO2) was employed as an electrode for electro-catalytic disinfection of surface wat...
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Published in: | Chemosphere (Oxford) 2021-01, Vol.263, p.127761, Article 127761 |
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description | Providing clean and safe drinking water by point of use (POU) disinfection methods has become a critical issue, especially in crises and epidemics. In this study, antimony-and nickel-doped tin oxide electrode (Ni–Sb–SnO2) was employed as an electrode for electro-catalytic disinfection of surface water. The synthetized electrodes were characterized using scanning electron microscope, linear sweep voltammetry and X-Ray diffraction techniques. The results revealed that the highest electrochemical disinfection efficiency was achieved by the Ni–Sb–SnO2 electrode under weak acidic conditions and its performance decreased with increasing pH towards alkaline environment. Based on the results, total coliform (TC) and fecal coliform (FC) were completely removed at current density of 0.67 mA cm−2. Moreover, the electrochemical disinfection of microorganisms showed that the process efficiency was directly proportional to increasing time and at 0.6 C cm−2 of charge passed, 3-log removal of the both indicators occurred after 15 min. The highest removal efficiency of TC and FC was also achieved at 8 mmol of NaCl concentration at |
doi_str_mv | 10.1016/j.chemosphere.2020.127761 |
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[Display omitted]
•Electro-catalytic disinfection of surface water was employed using Ni–Sb–SnO2 electrode.•Even without the use of supporting electrolytes, the energy consumption is low: 0.05 kWh m−3.•The complete removal of the microbial indicators in drinking water was obtained.•Microorganism’s inactivation pathways were proposed.•The proposed system can be used for point of use disinfection in crises and epidemics.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2020.127761</identifier><identifier>PMID: 33296999</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Antimony ; Bacteria ; Electrochemical disinfection ; Electrodes ; Nickel ; Ni–Sb–SnO2 composite ; Oxidation-Reduction ; Point of use ; Surface water ; Tin Compounds ; Titanium ; Water ; Water Pollutants, Chemical ; Water Purification</subject><ispartof>Chemosphere (Oxford), 2021-01, Vol.263, p.127761, Article 127761</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright © 2020 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c377t-f2888ebb195fb32e80cc91173196f8d3ae15d0d6913184c729c125750aadb08c3</citedby><cites>FETCH-LOGICAL-c377t-f2888ebb195fb32e80cc91173196f8d3ae15d0d6913184c729c125750aadb08c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33296999$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rahmani, Ali Reza</creatorcontrib><creatorcontrib>Nematollahi, Davood</creatorcontrib><creatorcontrib>Poormohammadi, Ali</creatorcontrib><creatorcontrib>Azarian, Ghasem</creatorcontrib><creatorcontrib>Zamani, Fahime</creatorcontrib><title>Electrodisinfection of bacteria-laden in surface water using modified Ti electrode by antimony-and nickel-doped tin oxide composite</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>Providing clean and safe drinking water by point of use (POU) disinfection methods has become a critical issue, especially in crises and epidemics. In this study, antimony-and nickel-doped tin oxide electrode (Ni–Sb–SnO2) was employed as an electrode for electro-catalytic disinfection of surface water. The synthetized electrodes were characterized using scanning electron microscope, linear sweep voltammetry and X-Ray diffraction techniques. The results revealed that the highest electrochemical disinfection efficiency was achieved by the Ni–Sb–SnO2 electrode under weak acidic conditions and its performance decreased with increasing pH towards alkaline environment. Based on the results, total coliform (TC) and fecal coliform (FC) were completely removed at current density of 0.67 mA cm−2. Moreover, the electrochemical disinfection of microorganisms showed that the process efficiency was directly proportional to increasing time and at 0.6 C cm−2 of charge passed, 3-log removal of the both indicators occurred after 15 min. The highest removal efficiency of TC and FC was also achieved at 8 mmol of NaCl concentration at <10 min of detention time. The results of this study depicted that the Ti/Ni–Sb–SnO2 electrode provides higher disinfection efficiency for the removal of TC and FC compared with Ti and SS/PbO2 electrodes. Moreover, the proposed system was able to completely eliminate heterotrophic, Streptococcus faecalis and Pseudomonas aerogenes indicators under optimal conditions. Therefore, it can be concluded that the proposed electrochemical system can be efficiency applied as a POU disinfection system for disinfection of water contaminated with microbial indicators, especially for crises and epidemics.
[Display omitted]
•Electro-catalytic disinfection of surface water was employed using Ni–Sb–SnO2 electrode.•Even without the use of supporting electrolytes, the energy consumption is low: 0.05 kWh m−3.•The complete removal of the microbial indicators in drinking water was obtained.•Microorganism’s inactivation pathways were proposed.•The proposed system can be used for point of use disinfection in crises and epidemics.</description><subject>Antimony</subject><subject>Bacteria</subject><subject>Electrochemical disinfection</subject><subject>Electrodes</subject><subject>Nickel</subject><subject>Ni–Sb–SnO2 composite</subject><subject>Oxidation-Reduction</subject><subject>Point of use</subject><subject>Surface water</subject><subject>Tin Compounds</subject><subject>Titanium</subject><subject>Water</subject><subject>Water Pollutants, Chemical</subject><subject>Water Purification</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqNkMtOAyEUhonRaL28gsEHmMqlMwNL03hLTNzomjBwsNQOTGCqdu2LS1M1Ll1xwvn-n_AhdEHJlBLaXC6nZgF9zMMCEkwZYeWetW1D99CEilZWlEmxjyaEzOqqqXl9hI5zXhJSwrU8REecM9lIKSfo83oFZkzR-uyDK6OPAUeHO21GSF5XK20hYB9wXienDeB3XRZ4XfAX3Jec82Dxk8fwXQS422AdRt_HsKl0sDh48wqrysahkGOpih--YCb2Q8x-hFN04PQqw9n3eYKeb66f5nfVw-Pt_fzqoTK8bcfKMSEEdB2Vtes4A0GMkZS2nMrGCcs10NoS20jKqZiZlklDWd3WRGvbEWH4CZK7XpNizgmcGpLvddooStRWrFqqP2LVVqzaiS3Z8112WHc92N_kj8kCzHcAlB-8eUgqGw_BgPWpiFE2-n888wX7nZLF</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Rahmani, Ali Reza</creator><creator>Nematollahi, Davood</creator><creator>Poormohammadi, Ali</creator><creator>Azarian, Ghasem</creator><creator>Zamani, Fahime</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>202101</creationdate><title>Electrodisinfection of bacteria-laden in surface water using modified Ti electrode by antimony-and nickel-doped tin oxide composite</title><author>Rahmani, Ali Reza ; Nematollahi, Davood ; Poormohammadi, Ali ; Azarian, Ghasem ; Zamani, Fahime</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c377t-f2888ebb195fb32e80cc91173196f8d3ae15d0d6913184c729c125750aadb08c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Antimony</topic><topic>Bacteria</topic><topic>Electrochemical disinfection</topic><topic>Electrodes</topic><topic>Nickel</topic><topic>Ni–Sb–SnO2 composite</topic><topic>Oxidation-Reduction</topic><topic>Point of use</topic><topic>Surface water</topic><topic>Tin Compounds</topic><topic>Titanium</topic><topic>Water</topic><topic>Water Pollutants, Chemical</topic><topic>Water Purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rahmani, Ali Reza</creatorcontrib><creatorcontrib>Nematollahi, Davood</creatorcontrib><creatorcontrib>Poormohammadi, Ali</creatorcontrib><creatorcontrib>Azarian, Ghasem</creatorcontrib><creatorcontrib>Zamani, Fahime</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rahmani, Ali Reza</au><au>Nematollahi, Davood</au><au>Poormohammadi, Ali</au><au>Azarian, Ghasem</au><au>Zamani, Fahime</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrodisinfection of bacteria-laden in surface water using modified Ti electrode by antimony-and nickel-doped tin oxide composite</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2021-01</date><risdate>2021</risdate><volume>263</volume><spage>127761</spage><pages>127761-</pages><artnum>127761</artnum><issn>0045-6535</issn><eissn>1879-1298</eissn><abstract>Providing clean and safe drinking water by point of use (POU) disinfection methods has become a critical issue, especially in crises and epidemics. In this study, antimony-and nickel-doped tin oxide electrode (Ni–Sb–SnO2) was employed as an electrode for electro-catalytic disinfection of surface water. The synthetized electrodes were characterized using scanning electron microscope, linear sweep voltammetry and X-Ray diffraction techniques. The results revealed that the highest electrochemical disinfection efficiency was achieved by the Ni–Sb–SnO2 electrode under weak acidic conditions and its performance decreased with increasing pH towards alkaline environment. Based on the results, total coliform (TC) and fecal coliform (FC) were completely removed at current density of 0.67 mA cm−2. Moreover, the electrochemical disinfection of microorganisms showed that the process efficiency was directly proportional to increasing time and at 0.6 C cm−2 of charge passed, 3-log removal of the both indicators occurred after 15 min. The highest removal efficiency of TC and FC was also achieved at 8 mmol of NaCl concentration at <10 min of detention time. The results of this study depicted that the Ti/Ni–Sb–SnO2 electrode provides higher disinfection efficiency for the removal of TC and FC compared with Ti and SS/PbO2 electrodes. Moreover, the proposed system was able to completely eliminate heterotrophic, Streptococcus faecalis and Pseudomonas aerogenes indicators under optimal conditions. Therefore, it can be concluded that the proposed electrochemical system can be efficiency applied as a POU disinfection system for disinfection of water contaminated with microbial indicators, especially for crises and epidemics.
[Display omitted]
•Electro-catalytic disinfection of surface water was employed using Ni–Sb–SnO2 electrode.•Even without the use of supporting electrolytes, the energy consumption is low: 0.05 kWh m−3.•The complete removal of the microbial indicators in drinking water was obtained.•Microorganism’s inactivation pathways were proposed.•The proposed system can be used for point of use disinfection in crises and epidemics.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>33296999</pmid><doi>10.1016/j.chemosphere.2020.127761</doi></addata></record> |
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subjects | Antimony Bacteria Electrochemical disinfection Electrodes Nickel Ni–Sb–SnO2 composite Oxidation-Reduction Point of use Surface water Tin Compounds Titanium Water Water Pollutants, Chemical Water Purification |
title | Electrodisinfection of bacteria-laden in surface water using modified Ti electrode by antimony-and nickel-doped tin oxide composite |
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