{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T19:37:01Z","timestamp":1782243421063,"version":"3.54.5"},"reference-count":45,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2021,4,26]],"date-time":"2021-04-26T00:00:00Z","timestamp":1619395200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Natural Science Foundation of Shandong Province, China","award":["No. ZR2019BF031"],"award-info":[{"award-number":["No. ZR2019BF031"]}]},{"name":"Science and Technology Support Plan for Youth Innovation of Colleges in Shandong Province","award":["DC2000000961"],"award-info":[{"award-number":["DC2000000961"]}]},{"DOI":"10.13039\/501100004613","name":"China Geological Survey","doi-asserted-by":"publisher","award":["Grant DD20189503"],"award-info":[{"award-number":["Grant DD20189503"]}],"id":[{"id":"10.13039\/501100004613","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Lanthanun oxide (La2O3) is a lanthanum chemical compound incorporates a sensible anionic complexing ability; however, it lacks stability at a low pH scale. Biochar fibers will give the benefit of their massive space and plethoric uses on the surface to support a metal chemical compound. Herein, wet spinning technology was used to load La3+ onto sodium alginate fiber, and to convert La3+ into La2O3 through carbonization. The La2O3-modified biochar (La-BC) fiber was characterized by SEM, XRD and XPS, etc. An adsorption experiment proved that La-BC showed an excellent adsorption capacity for chromates, and its saturation adsorption capacity was about 104.9 mg\/g. The information suggested that the adsorption was in step with both the Langmuir and Freundlich models, following pseudo-second-order surface assimilation mechanics, which showed that the Cr (VI) adsorption was characterized by single-phase and polyphase adsorption, mainly chemical adsorption. The thermodynamic parameters proved that the adsorption process was spontaneous and endothermic. The mechanistic investigation revealed that the mechanism of the adsorption of Cr (VI) by La-BC may include electrostatic interaction, ligand exchange, or complexation. Moreover, the co-existing anions and regeneration experiments proved that the La-BC is recyclable and has good prospects in the field of chrome-containing wastewater removal.<\/jats:p>","DOI":"10.3390\/ma14092224","type":"journal-article","created":{"date-parts":[[2021,4,27]],"date-time":"2021-04-27T02:31:43Z","timestamp":1619490703000},"page":"2224","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Adsorption of Hexavalent Chromium by Sodium Alginate Fiber Biochar Loaded with Lanthanum"],"prefix":"10.3390","volume":"14","author":[{"given":"Xinzhe","family":"Sun","sequence":"first","affiliation":[{"name":"College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2772-815X","authenticated-orcid":false,"given":"Yuanyuan","family":"Sun","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuqian","family":"Cui","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1016\/j.chemosphere.2018.11.009","article-title":"Removal of hexavalent chromium by biochar supported nZVI composite: Batch and fixed-bed column evaluations, mechanisms, and secondary contamination prevention","volume":"217","author":"Fan","year":"2019","journal-title":"Chemosphere"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"516","DOI":"10.1016\/j.cej.2017.04.058","article-title":"Removal of hexavalent chromium from aqueous solutions by a novel biochar supported nanoscale iron sulfide composite","volume":"322","author":"Lyu","year":"2017","journal-title":"Chem. 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