{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T02:17:38Z","timestamp":1791857858984,"version":"4.3.4"},"reference-count":49,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,1,21]],"date-time":"2020-01-21T00:00:00Z","timestamp":1579564800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Guangxi Natural Science Foundation Project","award":["No.:2017GXNSFAA198186"],"award-info":[{"award-number":["No.:2017GXNSFAA198186"]}]},{"name":"the National Natural Science Foundation of China under Grant","award":["Grant No.: 21367010, 51638006"],"award-info":[{"award-number":["Grant No.: 21367010, 51638006"]}]},{"name":"Guangxi science and Technology Planning Project under Grant","award":["No.: GuiKe-AD18126018"],"award-info":[{"award-number":["No.: GuiKe-AD18126018"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>This study details the preparation of Fe-Mn binary oxide\/mulberry stem biochar composite adsorbent (FM-MBC) from mulberry stems via the multiple activation by potassium permanganate, ferrous chloride, triethylenetetramine, and epichlorohydrin. The characteristics of FM-MBC had been characterized by SEM-EDS, BET, FT-IR, XRD, and XPS, and static adsorption batch experiments such as pH, adsorption time, were carried out to study the mechanism of Cr(VI) adsorption on FM-MBC and the impact factors. The results indicated that in contrast with the mulberry stem biochar (MBC), the FM-MBC has more porous on surface with a BET surface area of 74.73 m2\/g, and the surface loaded with \u03b1-Fe2O3 and amorphization of MnO2 particles. Besides, carboxylic acid, hydroxyl, and carbonyls functional groups were also formed on the FM-MBC surface. At the optimal pH 2.0, the maximum adsorption capacity for Cr(VI) was calculated from the Langmuir model of 28.31, 31.02, and 37.14 mg\/g at 25, 35, and 45 \u00b0C, respectively. The aromatic groups, carboxyls, and the hydroxyl groups were the mainly functional groups in the adsorption of Cr(VI). The mechanism of the adsorption process of FM-MBC for Cr(VI) mainly involves electrostatic interaction, surface adsorption of Cr(VI) on FM-MBC, and ion exchange.<\/jats:p>","DOI":"10.3390\/ijerph17030676","type":"journal-article","created":{"date-parts":[[2020,1,21]],"date-time":"2020-01-21T11:25:59Z","timestamp":1579605959000},"page":"676","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":55,"title":["Preparation and Characterization of Fe-Mn Binary Oxide\/Mulberry Stem Biochar Composite Adsorbent and Adsorption of Cr(VI) from Aqueous Solution"],"prefix":"10.3390","volume":"17","author":[{"given":"Meina","family":"Liang","sequence":"first","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"},{"name":"Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuiping","family":"Xu","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yinian","family":"Zhu","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"},{"name":"Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenliang","family":"Deng","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liling","family":"Yan","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6613-5085","authenticated-orcid":false,"given":"Huijun","family":"He","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China"},{"name":"Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,1,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"386","DOI":"10.1016\/j.apcatb.2018.10.052","article-title":"Removal of Cr(VI) from water by a biochar-coupled g-C3N4 nanosheets composite and performance of a recycled photocatalyst in single and combined pollution systems","volume":"243","author":"Li","year":"2019","journal-title":"Appl. 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