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Removal of chromium (III) by using coal as adsorbent.
J Hazard Mater. 2009 Nov 15; 171(1-3):797-801.JH

Abstract

The adsorption of Cr(III) by two different coal varieties from Lakhra and Thar coalfields (Pakistan) have been studied in batch mode. The effect of adsorbent dose, pH, contact time and agitation speed on the adsorption of Cr(III) by both the coals were investigated. Adsorption equilibrium was achieved in 40-50 min. The Langmuir, Freundlich and Temkin adsorption isotherms were used to elucidate the observed sorption phenomena. The maximum Cr(III) removal was 2.61 mg of Cr(III) per gram of LC (Lakhra coal) and 2.55 mg of Cr(III) per gram of TC (Thar coal) as evaluated from Langmuir isotherm. The heat of sorption was in the range 3.75-3.87 kJ/mol as evaluated from Temkin isotherm. Best results were obtained at pH>5. It is proposed that low rank coals of Pakistan can be used for removal of toxic metals like Cr(III) from industrial effluents/waste waters.

Authors+Show Affiliations

Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19592161

Citation

Anwar, Jamil, et al. "Removal of Chromium (III) By Using Coal as Adsorbent." Journal of Hazardous Materials, vol. 171, no. 1-3, 2009, pp. 797-801.
Anwar J, Shafique U, Salman M, et al. Removal of chromium (III) by using coal as adsorbent. J Hazard Mater. 2009;171(1-3):797-801.
Anwar, J., Shafique, U., Salman, M., Waheed-uz-Zaman, ., Anwar, S., & Anzano, J. M. (2009). Removal of chromium (III) by using coal as adsorbent. Journal of Hazardous Materials, 171(1-3), 797-801. https://doi.org/10.1016/j.jhazmat.2009.06.076
Anwar J, et al. Removal of Chromium (III) By Using Coal as Adsorbent. J Hazard Mater. 2009 Nov 15;171(1-3):797-801. PubMed PMID: 19592161.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of chromium (III) by using coal as adsorbent. AU - Anwar,Jamil, AU - Shafique,Umer, AU - Salman,Muhammad, AU - Waheed-uz-Zaman,, AU - Anwar,Shafique, AU - Anzano,Jesús M, Y1 - 2009/06/21/ PY - 2009/04/07/received PY - 2009/06/11/revised PY - 2009/06/15/accepted PY - 2009/7/14/entrez PY - 2009/7/14/pubmed PY - 2010/1/20/medline SP - 797 EP - 801 JF - Journal of hazardous materials JO - J Hazard Mater VL - 171 IS - 1-3 N2 - The adsorption of Cr(III) by two different coal varieties from Lakhra and Thar coalfields (Pakistan) have been studied in batch mode. The effect of adsorbent dose, pH, contact time and agitation speed on the adsorption of Cr(III) by both the coals were investigated. Adsorption equilibrium was achieved in 40-50 min. The Langmuir, Freundlich and Temkin adsorption isotherms were used to elucidate the observed sorption phenomena. The maximum Cr(III) removal was 2.61 mg of Cr(III) per gram of LC (Lakhra coal) and 2.55 mg of Cr(III) per gram of TC (Thar coal) as evaluated from Langmuir isotherm. The heat of sorption was in the range 3.75-3.87 kJ/mol as evaluated from Temkin isotherm. Best results were obtained at pH>5. It is proposed that low rank coals of Pakistan can be used for removal of toxic metals like Cr(III) from industrial effluents/waste waters. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19592161/Removal_of_chromium__III__by_using_coal_as_adsorbent_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)00994-7 DB - PRIME DP - Unbound Medicine ER -