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Batch experiments were carried out to evaluate the influence of various factors including dosage of K<jats:sub>2<\/jats:sub>FeO<jats:sub>4<\/jats:sub>, solution <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content>, the initial concentration of Cd(<jats:styled-content style=\"fixed-case\">II<\/jats:styled-content>), and coexisting ions. The results showed that increasing dosage of K<jats:sub>2<\/jats:sub>FeO<jats:sub>4<\/jats:sub> benefited the removal of Cd(<jats:styled-content style=\"fixed-case\">II<\/jats:styled-content>) with the efficiency up to 98.97%. The enhanced removal occurring at higher <jats:styled-content style=\"fixed-case\">pH<\/jats:styled-content> could be attributed to less self\u2010decomposition of K<jats:sub>2<\/jats:sub>FeO<jats:sub>4<\/jats:sub> under alkaline conditions. The maximum specific removal capacity was 80\u00a0mg\/(g K<jats:sub>2<\/jats:sub>FeO<jats:sub>4<\/jats:sub>) under certain conditions. Surface properties of the Cd(<jats:styled-content style=\"fixed-case\">II<\/jats:styled-content>)\u2010containing precipitations were characterized, and the results showed that the weakly crystalline ferrihydrite derived from self\u2010decomposition of Fe(<jats:styled-content style=\"fixed-case\">VI<\/jats:styled-content>) benefited the adsorption capacity, and Cd(<jats:styled-content style=\"fixed-case\">II<\/jats:styled-content>) was removed via the adsorption of the hydrolysate nanoparticles. Moreover, the coexisting ions were found weakening the removal efficiency of Cd(<jats:styled-content style=\"fixed-case\">II<\/jats:styled-content>) due to the restricted activity of K<jats:sub>2<\/jats:sub>FeO<jats:sub>4<\/jats:sub> and competition for adsorption sites of hydrolysate. The interaction between the hydrolyzed products and the adsorbed Cd(<jats:styled-content style=\"fixed-case\">II<\/jats:styled-content>) was also weaken by compressing the thickness of the electric double layer because of the presence of coexisting ions.<\/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>Removing Cd(II) from aqueous solution as high as 98.97%.<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p>Removal efficiencies of Fe(VI) relied on chemical dose, pH and contaminant concentration.<\/jats:p><\/jats:list-item>\n\n<jats:list-item><jats:p>Co\u2010exiting ions weaken the removal efficiency, such as Ca<jats:sup>2+<\/jats:sup> and SO<jats:sub>4<\/jats:sub><jats:sup>2\u2010<\/jats:sup> as well as ionic strength.<\/jats:p><\/jats:list-item>\n<\/jats:list>\n<\/jats:p><\/jats:sec>","DOI":"10.1002\/wer.1088","type":"journal-article","created":{"date-parts":[[2019,2,11]],"date-time":"2019-02-11T15:50:24Z","timestamp":1549900224000},"page":"628-633","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Aqueous cadmium removal with ferrate: Influencing factors, removal mechanism, and effect of coexisting ions"],"prefix":"10.1002","volume":"91","author":[{"given":"Hongbo","family":"Wang","sequence":"first","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ru","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haining","family":"Li","sequence":"additional","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mei","family":"Li","sequence":"additional","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yonglei","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qian","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1738-9924","authenticated-orcid":false,"given":"Ning","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Municipal and Environmental Engineering Shandong Jianzhu University  Jinan China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,3,5]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.4028\/www.scientific.net\/KEM.778.79"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhazmat.2013.12.018"},{"key":"e_1_2_6_4_1","doi-asserted-by":"crossref","first-page":"1689","DOI":"10.1128\/aem.54.7.1689-1693.1988","article-title":"Effects of glucose concentrations on cadmium, copper, mercury, and zinc toxicity to a Klebsiella sp","volume":"54","author":"Brynhildsen L.","year":"1988","journal-title":"Applied & Environmental Microbiology"},{"key":"e_1_2_6_5_1","unstructured":"Carr J. 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