{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T19:33:56Z","timestamp":1791920036621,"version":"4.3.4"},"reference-count":60,"publisher":"IWA Publishing","issue":"10","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2018,12,21]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>It is of practical significance to promote the transformation of Fe in acid mine drainage (AMD) into ferric hydroxysulfate minerals with strong ability to remove heavy metals or metalloids. To investigate the types of biogenic ferric hydroxysulfate minerals generated in AMD by Acidithiobacillus ferrooxidans (A. ferrooxidans), different pH and K+ concentrations are tested for the formation of precipitates in media containing 160 mmol\/L Fe2+. The Cr(VI) removal efficiencies of ferric hydroxysulfate minerals in AMD with different acidities are also compared. Results indicate that the mineralizing abilities of the initial pH levels (pH 3.0 &amp;gt; pH 2.5 &amp;gt; pH 2.0) and K+ concentrations (53.3 mmol\/L &amp;gt; 3.2 mmol\/L \u2248 0.8 mmol\/L) differ, with cumulative Fe precipitation efficiencies of 58.7%, 58.0%, and 44.2% (K+ = 53.3 mmol\/L), and 58.7%, 29.9%, and 29.6% (pH 3.0) after 96 h of A. ferrooxidans incubation, respectively. X-ray diffraction indicates that K-jarosites are formed in the treatments n(Fe)\/n(K) = 0.1 and 3 at pH 2.0\u20133.0, while only schwertmannite is generated in a system of pH 3.0 and n(Fe)\/n(K) = 200. X-ray photoelectron spectroscopy reveals that HCrO4\u2212 may be adsorbed as an inner-sphere complex on schwertmannite when the AMD pH is 3.0.<\/jats:p>","DOI":"10.2166\/wst.2018.499","type":"journal-article","created":{"date-parts":[[2018,12,10]],"date-time":"2018-12-10T13:35:58Z","timestamp":1544448958000},"page":"2183-2192","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":12,"title":["Initial pH and K+ concentrations jointly determine the types of biogenic ferric hydroxysulfate minerals and their effect on adsorption removal of Cr(VI) in simulated acid mine drainage"],"prefix":"10.2166","volume":"78","author":[{"given":"Yongwei","family":"Song","sequence":"first","affiliation":[{"name":"Department of Environmental Engineering, School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianyu","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Environmental Studies, China University of Geosciences, Wuhan 430074, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heru","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Environmental Engineering, School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2018,12,10]]},"reference":[{"key":"2020032810472858600_WST-EM181071C1","volume-title":"Standard Methods for the Examination of Water and Wastewater","author":"American Public Health Association (APHA)","year":"2012"},{"key":"2020032810472858600_WST-EM181071C2","doi-asserted-by":"crossref","first-page":"965","DOI":"10.1016\/j.jhazmat.2009.06.097","article-title":"Arsenic removal by goethite and jarosite in acidic conditions and its environmental implications","volume":"171","year":"2009","journal-title":"J. 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