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Removal of Cr (VI) with wheat-residue derived black carbon: reaction mechanism and adsorption performance.
J Hazard Mater. 2010 Mar 15; 175(1-3):816-22.JH

Abstract

The removal of Cr (VI) from aqueous solutions using black carbon (BC) isolated from the burning residues of wheat straw was investigated as a function of pH, contact time, reaction temperature, supporting electrolyte concentration and analytical initial Cr (VI) concentration in batch studies. The effect of surface properties on the adsorption behavior of Cr (VI) was investigated with scanning electron microscope (SEM) equipped with the energy dispersive X-ray spectroscope (EDS) and Fourier transform-infrared (FTIR) spectroscopy. The removal mechanism of Cr (VI) onto the BC was investigated and the result showed that the adsorption reaction consumed a large amount of protons along the reduction of Cr (VI) to Cr (III). The oxidation of the BC took place concurrently to the chromium reduction and led to the formation of hydroxyl and carboxyl functions. An initial solution pH of 1.0 was most favorable for Cr (VI) removal. The adsorption process followed the pseudo-second order equation and Freundlich isotherm very well. The Cr (VI) adsorption was temperature-dependent and almost independent on the sodium chloride concentrations. The maximum adsorption capacity for Cr (VI) was found at 21.34 mg/g in an acidic medium, which is comparable to other low-cost adsorbents.

Authors+Show Affiliations

Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu, 222005, China. snowpine1969@yahoo.com.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19926221

Citation

Wang, Xue Song, et al. "Removal of Cr (VI) With Wheat-residue Derived Black Carbon: Reaction Mechanism and Adsorption Performance." Journal of Hazardous Materials, vol. 175, no. 1-3, 2010, pp. 816-22.
Wang XS, Chen LF, Li FY, et al. Removal of Cr (VI) with wheat-residue derived black carbon: reaction mechanism and adsorption performance. J Hazard Mater. 2010;175(1-3):816-22.
Wang, X. S., Chen, L. F., Li, F. Y., Chen, K. L., Wan, W. Y., & Tang, Y. J. (2010). Removal of Cr (VI) with wheat-residue derived black carbon: reaction mechanism and adsorption performance. Journal of Hazardous Materials, 175(1-3), 816-22. https://doi.org/10.1016/j.jhazmat.2009.10.082
Wang XS, et al. Removal of Cr (VI) With Wheat-residue Derived Black Carbon: Reaction Mechanism and Adsorption Performance. J Hazard Mater. 2010 Mar 15;175(1-3):816-22. PubMed PMID: 19926221.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Cr (VI) with wheat-residue derived black carbon: reaction mechanism and adsorption performance. AU - Wang,Xue Song, AU - Chen,Li Fang, AU - Li,Fei Yan, AU - Chen,Kuan Liang, AU - Wan,Wen Ya, AU - Tang,Yu Jun, Y1 - 2009/10/30/ PY - 2009/07/17/received PY - 2009/07/30/revised PY - 2009/10/18/accepted PY - 2009/11/21/entrez PY - 2009/11/21/pubmed PY - 2010/4/30/medline SP - 816 EP - 22 JF - Journal of hazardous materials JO - J Hazard Mater VL - 175 IS - 1-3 N2 - The removal of Cr (VI) from aqueous solutions using black carbon (BC) isolated from the burning residues of wheat straw was investigated as a function of pH, contact time, reaction temperature, supporting electrolyte concentration and analytical initial Cr (VI) concentration in batch studies. The effect of surface properties on the adsorption behavior of Cr (VI) was investigated with scanning electron microscope (SEM) equipped with the energy dispersive X-ray spectroscope (EDS) and Fourier transform-infrared (FTIR) spectroscopy. The removal mechanism of Cr (VI) onto the BC was investigated and the result showed that the adsorption reaction consumed a large amount of protons along the reduction of Cr (VI) to Cr (III). The oxidation of the BC took place concurrently to the chromium reduction and led to the formation of hydroxyl and carboxyl functions. An initial solution pH of 1.0 was most favorable for Cr (VI) removal. The adsorption process followed the pseudo-second order equation and Freundlich isotherm very well. The Cr (VI) adsorption was temperature-dependent and almost independent on the sodium chloride concentrations. The maximum adsorption capacity for Cr (VI) was found at 21.34 mg/g in an acidic medium, which is comparable to other low-cost adsorbents. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19926221/Removal_of_Cr__VI__with_wheat_residue_derived_black_carbon:_reaction_mechanism_and_adsorption_performance_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)01733-6 DB - PRIME DP - Unbound Medicine ER -