{"id":12013,"date":"2015-01-01T18:04:14","date_gmt":"2015-01-01T18:04:14","guid":{"rendered":"http:\/\/lequia-udg.com\/2015\/01\/01\/cathode-potential-and-anode-electron-donor-evaluation-for-a-suitable-treatment-of-nitrate-contaminated-groundwater-in-bioelectrochemical-systems\/"},"modified":"2024-04-19T15:56:12","modified_gmt":"2024-04-19T15:56:12","slug":"cathode-potential-and-anode-electron-donor-evaluation-for-a-suitable-treatment-of-nitrate-contaminated-groundwater-in-bioelectrochemical-systems","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2015\/01\/01\/cathode-potential-and-anode-electron-donor-evaluation-for-a-suitable-treatment-of-nitrate-contaminated-groundwater-in-bioelectrochemical-systems\/","title":{"rendered":"Cathode potential and anode electron donor evaluation for a suitable treatment of nitrate-contaminated groundwater in bioelectrochemical systems"},"content":{"rendered":"\t\t
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\r\n\t\t\t\r\n\t\t\t\tAuthors: Narc\u00eds Pous, Sebasti\u00e0 Puig, M. Dolors Balaguer, Jes\u00fas Colprim \r\n\t\t\t\r\n\t\t\t<\/h4>\r\n\t\t

\r\n\t\t\t\r\n\t\t\t\tCathode potential and anode electron donor evaluation for a suitable treatment of nitrate-contaminated groundwater in bioelectrochemical systems\r\n\t\t\t\r\n\t\t\t<\/h2>\r\n\t\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Several regions around the world present high levels of nitrate in groundwater. Due to its toxicity, nitrate must be removed before the groundwater is used as drinking-water. This study assessed how a denitrifying bioelectrochemical system could be operated to treat nitrate-polluted groundwater. It evaluated the cathode potential (from +597 to \u2212703 mV vs SHE) and the anode electron donor (acetate and water). Similar trends were found regardless of the anode electron donor. The nitrate removal rate increased from 1.05 to 5.44 mg N-NO3<\/sub>\u2212<\/sup> LNCC<\/sub>\u22121<\/sup> h\u22121<\/sup> when the cathode potential was lowered from +597 to \u2212403 mV vs SHE, where it stabilized. The nitrate reduction end-products (nitrite, nitrous oxide and dinitrogen gas) also changed with the different potentials of the cathode electrode. The World Health Organization nitrates and nitrites standards for drinking-water were reached at cathode potentials between \u2212103 and \u2212203 mV vs SHE. The highest rate of nitrate conversion to N2<\/sub> (2.59 mg N-NO3<\/sub>\u2212<\/sup> LNCC<\/sub>\u22121<\/sup> h\u22121<\/sup>, 93.9%) occurred at \u2212123 mV using water as anode electron donor, with an estimated operational cost similar to conventional technologies (\"View<\/a><\/span>). The long-term stability of proposed operation was demonstrated during 96 days, and the rate of nitrate conversion to N2<\/sub> even increased to 4.09 mg N-NO3<\/sub>\u2212<\/sup> LNCC<\/sub>\u22121<\/sup> h\u22121<\/sup>. A carbon-free operation for a bioelectrochemical system has been developed to treat nitrate-polluted groundwater at a competitive cost.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Year:<\/strong><\/td>\n2015<\/td>\n<\/tr>\n
Authors:<\/strong><\/td>\nNarc\u00eds Pous, Sebasti\u00e0 Puig, M. Dolors Balaguer, Jes\u00fas Colprim<\/td>\n<\/tr>\n
Reference:<\/strong><\/td>\nChemical Engineering Journal, 263, 1, 151-159<\/td>\n<\/tr>\n
Link:<\/strong><\/td>\nhttp:\/\/dx.doi.org\/10.1016\/j.cej.2014.11.002<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Authors: Narc\u00eds Pous, Sebasti\u00e0 Puig, M. Dolors Balaguer, Jes\u00fas Colprim Cathode potential and anode electron donor evaluation for a suitable treatment of nitrate-contaminated groundwater in bioelectrochemical systems Several regions around the world present high levels of nitrate in groundwater. Due to its toxicity, nitrate must be removed before the groundwater is used as drinking-water. This … Cathode potential and anode electron donor evaluation for a suitable treatment of nitrate-contaminated groundwater in bioelectrochemical systems<\/span>“>Continue reading Cathode potential and anode electron donor evaluation for a suitable treatment of nitrate-contaminated groundwater in bioelectrochemical systems<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[64],"tags":[],"class_list":["post-12013","post","type-post","status-publish","format-standard","hentry","category-articles-ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/comments?post=12013"}],"version-history":[{"count":1,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12013\/revisions"}],"predecessor-version":[{"id":12014,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12013\/revisions\/12014"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=12013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=12013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=12013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}