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Characteristics and mechanisms of hexavalent chromium removal by biochar from sugar beet tailing.
J Hazard Mater. 2011 Jun 15; 190(1-3):909-15.JH

Abstract

Removal of Cr(VI) from aqueous solutions using biochar from sugar beet tailing (SBT) was investigated as a function of pH, contact time, and biochar mass via batch experiments. The surface characteristics of SBT biochar before and after Cr(VI) sorption was investigated with scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy. Desorption and X-ray photoelectron spectroscopy studies showed that most of the Cr bound to SBT biochar was Cr(III). These results indicated that the electrostatic attraction of Cr(VI) to positively charged biochar surface, reduction of Cr(VI) to Cr(III) ion, and complexation between Cr(III) ion and SBT's function groups were probably responsible for Cr(VI) removal by SBT biochar. An initial solution with a pH of 2.0 was most favorable for Cr(VI) removal. The sorption process can be described by the pseudo-second order equation and Langmuir isotherm. The maximum sorption capacity for Cr(VI) was 123 mg/g under an acidic medium, which was comparable to other low-cost sorbents.

Authors+Show Affiliations

Department of Soil and Water Science, University of Florida, Gainesville, FL 32611, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

21550718

Citation

Dong, Xiaoling, et al. "Characteristics and Mechanisms of Hexavalent Chromium Removal By Biochar From Sugar Beet Tailing." Journal of Hazardous Materials, vol. 190, no. 1-3, 2011, pp. 909-15.
Dong X, Ma LQ, Li Y. Characteristics and mechanisms of hexavalent chromium removal by biochar from sugar beet tailing. J Hazard Mater. 2011;190(1-3):909-15.
Dong, X., Ma, L. Q., & Li, Y. (2011). Characteristics and mechanisms of hexavalent chromium removal by biochar from sugar beet tailing. Journal of Hazardous Materials, 190(1-3), 909-15. https://doi.org/10.1016/j.jhazmat.2011.04.008
Dong X, Ma LQ, Li Y. Characteristics and Mechanisms of Hexavalent Chromium Removal By Biochar From Sugar Beet Tailing. J Hazard Mater. 2011 Jun 15;190(1-3):909-15. PubMed PMID: 21550718.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characteristics and mechanisms of hexavalent chromium removal by biochar from sugar beet tailing. AU - Dong,Xiaoling, AU - Ma,Lena Q, AU - Li,Yuncong, Y1 - 2011/04/08/ PY - 2010/12/10/received PY - 2011/04/02/revised PY - 2011/04/04/accepted PY - 2011/5/10/entrez PY - 2011/5/10/pubmed PY - 2011/9/29/medline SP - 909 EP - 15 JF - Journal of hazardous materials JO - J Hazard Mater VL - 190 IS - 1-3 N2 - Removal of Cr(VI) from aqueous solutions using biochar from sugar beet tailing (SBT) was investigated as a function of pH, contact time, and biochar mass via batch experiments. The surface characteristics of SBT biochar before and after Cr(VI) sorption was investigated with scanning electron microscopy equipped with energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy. Desorption and X-ray photoelectron spectroscopy studies showed that most of the Cr bound to SBT biochar was Cr(III). These results indicated that the electrostatic attraction of Cr(VI) to positively charged biochar surface, reduction of Cr(VI) to Cr(III) ion, and complexation between Cr(III) ion and SBT's function groups were probably responsible for Cr(VI) removal by SBT biochar. An initial solution with a pH of 2.0 was most favorable for Cr(VI) removal. The sorption process can be described by the pseudo-second order equation and Langmuir isotherm. The maximum sorption capacity for Cr(VI) was 123 mg/g under an acidic medium, which was comparable to other low-cost sorbents. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/21550718/Characteristics_and_mechanisms_of_hexavalent_chromium_removal_by_biochar_from_sugar_beet_tailing_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(11)00446-8 DB - PRIME DP - Unbound Medicine ER -