Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse

Abstract We prepared a novel adsorbent functionalized by bagasse magnetic biochar (BMBC). To study the removal behaviors and mechanisms of Cr(VI) by BMBC, batch adsorption experiments were conducted by modifying variables, such as pH, adsorption time, BMBC dosages, initial Cr concentration, co-exist...

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Autores principales:	Meina Liang, Yanmei Ding, Qing Zhang, Dunqiu Wang, Huanhuan Li, Lin Lu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c282e2cc609643cf953926801c828a09
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spelling	oai:doaj.org-article:c282e2cc609643cf953926801c828a092021-12-02T15:11:51ZRemoval of aqueous Cr(VI) by magnetic biochar derived from bagasse10.1038/s41598-020-78142-32045-2322https://doaj.org/article/c282e2cc609643cf953926801c828a092020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78142-3https://doaj.org/toc/2045-2322Abstract We prepared a novel adsorbent functionalized by bagasse magnetic biochar (BMBC). To study the removal behaviors and mechanisms of Cr(VI) by BMBC, batch adsorption experiments were conducted by modifying variables, such as pH, adsorption time, BMBC dosages, initial Cr concentration, co-existing ions, and ionic strength, and characterizing BMBC before and after Cr(VI) adsorption. BMBC was primarily composed of Fe2O3 and Fe3O4 on bagasse boichar with an amorphous structure. The specific surface area of BMBC was 81.94 m2 g−1, and the pHpzc of BMBC was 6.2. The fabricated BMBC showed high adsorption performance of Cr(VI) in aqueous solution. The maximum Cr(VI) adsorption capacity of BMBC was 29.08 mg g−1 at 25 ºC, which was much higher than that of conventional biochar sorbents. The adsorption process followed pseudo-second-order kinetics and could be explained by the involvement of the Langmuir isotherm in monolayer adsorption. The crystalline structure of Fe3O4 in the BMBC changed slightly during the adsorption process; Fe3O4 improved the adsorption of Cr(VI) on BMB. The desorption capacity of Cr(VI) was 8.21 mg g−1 when 0.2 mol L−1 NaOH was used as the desorption solution. After being reused three times, the removal efficiency is still as high as 80.36%.Meina LiangYanmei DingQing ZhangDunqiu WangHuanhuan LiLin LuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Meina Liang Yanmei Ding Qing Zhang Dunqiu Wang Huanhuan Li Lin Lu Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse
description	Abstract We prepared a novel adsorbent functionalized by bagasse magnetic biochar (BMBC). To study the removal behaviors and mechanisms of Cr(VI) by BMBC, batch adsorption experiments were conducted by modifying variables, such as pH, adsorption time, BMBC dosages, initial Cr concentration, co-existing ions, and ionic strength, and characterizing BMBC before and after Cr(VI) adsorption. BMBC was primarily composed of Fe2O3 and Fe3O4 on bagasse boichar with an amorphous structure. The specific surface area of BMBC was 81.94 m2 g−1, and the pHpzc of BMBC was 6.2. The fabricated BMBC showed high adsorption performance of Cr(VI) in aqueous solution. The maximum Cr(VI) adsorption capacity of BMBC was 29.08 mg g−1 at 25 ºC, which was much higher than that of conventional biochar sorbents. The adsorption process followed pseudo-second-order kinetics and could be explained by the involvement of the Langmuir isotherm in monolayer adsorption. The crystalline structure of Fe3O4 in the BMBC changed slightly during the adsorption process; Fe3O4 improved the adsorption of Cr(VI) on BMB. The desorption capacity of Cr(VI) was 8.21 mg g−1 when 0.2 mol L−1 NaOH was used as the desorption solution. After being reused three times, the removal efficiency is still as high as 80.36%.
format	article
author	Meina Liang Yanmei Ding Qing Zhang Dunqiu Wang Huanhuan Li Lin Lu
author_facet	Meina Liang Yanmei Ding Qing Zhang Dunqiu Wang Huanhuan Li Lin Lu
author_sort	Meina Liang
title	Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse
title_short	Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse
title_full	Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse
title_fullStr	Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse
title_full_unstemmed	Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse
title_sort	removal of aqueous cr(vi) by magnetic biochar derived from bagasse
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/c282e2cc609643cf953926801c828a09
work_keys_str_mv	AT meinaliang removalofaqueouscrvibymagneticbiocharderivedfrombagasse AT yanmeiding removalofaqueouscrvibymagneticbiocharderivedfrombagasse AT qingzhang removalofaqueouscrvibymagneticbiocharderivedfrombagasse AT dunqiuwang removalofaqueouscrvibymagneticbiocharderivedfrombagasse AT huanhuanli removalofaqueouscrvibymagneticbiocharderivedfrombagasse AT linlu removalofaqueouscrvibymagneticbiocharderivedfrombagasse
_version_	1718387658754883584

Removal of aqueous Cr(VI) by magnetic biochar derived from bagasse

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