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Batch experiments were performed at different initial Cr(<jats:styled-content style=\"fixed-case\">VI<\/jats:styled-content>) concentrations, contact times, and solution <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> values. The effects of coexisting anions and chelating agents were also examined. The results indicated that the removal of Cr(<jats:styled-content style=\"fixed-case\">VI<\/jats:styled-content>) was highly <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\u2010dependent and reached a maximum capacity at <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> of 2. The equilibrium data were fitted well with the Langmuir isotherm model, and the kinetic data fitted better with the pseudo\u2010second\u2010order kinetic model. The increasing concentrations of <jats:styled-content style=\"fixed-case\">EDTA<\/jats:styled-content> in aqueous solutions were favorable to the removal of Cr(<jats:styled-content style=\"fixed-case\">VI<\/jats:styled-content>), while <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/wer1059-math-0001.png\" xlink:title=\"urn:x-wiley:10614303:media:wer1059:wer1059-math-0001\"\/> significantly inhibited adsorption. Furthermore, the <jats:styled-content style=\"fixed-case\">GO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">nZVI<\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">BC<\/jats:styled-content> maintained ~84.5% of its original capacity after aging in the air for 25\u00a0weeks. Based on the removal efficiency, <jats:styled-content style=\"fixed-case\">GO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">nZVI<\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">BC<\/jats:styled-content> can be considered to be an effective material for water treatment applications.<\/jats:p><\/jats:sec><jats:sec><jats:title>Practitioner points<\/jats:title><jats:p>\n<jats:list list-type=\"bullet\">\n\n<jats:list-item><jats:p>Biochar\u2010supported graphene oxide\u2010coated nanoscale zerovalent iron (<jats:styled-content style=\"fixed-case\">GO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">nZVI<\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">BC<\/jats:styled-content>) was synthesized and used to treat Cr(<jats:styled-content style=\"fixed-case\">VI<\/jats:styled-content>) from solution.<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p>Cr(<jats:styled-content style=\"fixed-case\">VI<\/jats:styled-content>) removal was <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>\u2010dependent and obeyed the Langmuir isotherm model and pseudo\u2010second\u2010order model.<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p><jats:styled-content style=\"fixed-case\">GO<\/jats:styled-content>\u2010<jats:styled-content style=\"fixed-case\">nZVI<\/jats:styled-content>\/<jats:styled-content style=\"fixed-case\">BC<\/jats:styled-content> maintained ~84.5% of its original capacity after aging for 25\u00a0w in the air.<\/jats:p><\/jats:list-item>\n<\/jats:list>\n<\/jats:p><\/jats:sec>","DOI":"10.1002\/wer.1059","type":"journal-article","created":{"date-parts":[[2019,1,23]],"date-time":"2019-01-23T21:38:28Z","timestamp":1548279508000},"page":"565-572","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Immobilization of Cr(<scp>VI<\/scp>) from solution by a graphene 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