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Removal of Cr(VI) from aqueous solutions using modified red pine sawdust.
J Hazard Mater. 2008 Apr 15; 152(3):1201-7.JH

Abstract

The adsorption of Cr(VI) from aqueous solutions on sawdust (SD), base extracted sawdust (BESD) and tartaric acid modified sawdust (TASD) of Turkish red pine tree (Pinus nigra), a timber industry waste, was studied at varying Cr(VI) concentrations, adsorbent dose, modifier concentration and pH. Batch adsorption studies have been carried out. Sawdust was collected from waste timber industry and modified with various amount of tartaric acid (TA) (0.1-1.5M). The batch sorption kinetics has been tested and the applicability of the Langmuir and Freundlich adsorption isotherms for the present system has been tested at 25+/-2 degrees C. Under observed test conditions, the equilibrium adsorption data fits the linear Freundlich isotherms. An initial pH of 3.0 was most favorable for Cr(VI) removal by all adsorbents. Maximum Cr(VI) was sequestered from the solution within 120 min after the beginning for every experiment. The experimental result inferred that chelation and ion exchange is one of the major adsorption mechanisms for binding metal ions to the SD. Percentage removal of Cr(VI) was maximum at the initial pH of 3.0 (87.7, 70.6 and 55.2% by TASD, BESD, and SD, respectively). Adsorption capacities range from 8.3 to 22.6 mg/g for SD samples.

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Authors+Show Affiliations

Gode F
Department of Chemistry, Suleyman Demirel University, 32260 Isparta, Turkey.
Atalay ED
No affiliation info available
Pehlivan E
No affiliation info available

MeSH

AdsorptionChromiumHydrogen-Ion ConcentrationOsmolar ConcentrationPinusSolutionsSpectroscopy, Fourier Transform InfraredWater

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17826899

Citation

Gode, Fethiye, et al. "Removal of Cr(VI) From Aqueous Solutions Using Modified Red Pine Sawdust." Journal of Hazardous Materials, vol. 152, no. 3, 2008, pp. 1201-7.
Gode F, Atalay ED, Pehlivan E. Removal of Cr(VI) from aqueous solutions using modified red pine sawdust. J Hazard Mater. 2008;152(3):1201-7.
Gode, F., Atalay, E. D., & Pehlivan, E. (2008). Removal of Cr(VI) from aqueous solutions using modified red pine sawdust. Journal of Hazardous Materials, 152(3), 1201-7.
Gode F, Atalay ED, Pehlivan E. Removal of Cr(VI) From Aqueous Solutions Using Modified Red Pine Sawdust. J Hazard Mater. 2008 Apr 15;152(3):1201-7. PubMed PMID: 17826899.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Cr(VI) from aqueous solutions using modified red pine sawdust. AU - Gode,Fethiye, AU - Atalay,Elif Dincturk, AU - Pehlivan,Erol, Y1 - 2007/08/06/ PY - 2007/02/18/received PY - 2007/06/05/revised PY - 2007/07/31/accepted PY - 2007/9/11/pubmed PY - 2008/6/21/medline PY - 2007/9/11/entrez SP - 1201 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 152 IS - 3 N2 - The adsorption of Cr(VI) from aqueous solutions on sawdust (SD), base extracted sawdust (BESD) and tartaric acid modified sawdust (TASD) of Turkish red pine tree (Pinus nigra), a timber industry waste, was studied at varying Cr(VI) concentrations, adsorbent dose, modifier concentration and pH. Batch adsorption studies have been carried out. Sawdust was collected from waste timber industry and modified with various amount of tartaric acid (TA) (0.1-1.5M). The batch sorption kinetics has been tested and the applicability of the Langmuir and Freundlich adsorption isotherms for the present system has been tested at 25+/-2 degrees C. Under observed test conditions, the equilibrium adsorption data fits the linear Freundlich isotherms. An initial pH of 3.0 was most favorable for Cr(VI) removal by all adsorbents. Maximum Cr(VI) was sequestered from the solution within 120 min after the beginning for every experiment. The experimental result inferred that chelation and ion exchange is one of the major adsorption mechanisms for binding metal ions to the SD. Percentage removal of Cr(VI) was maximum at the initial pH of 3.0 (87.7, 70.6 and 55.2% by TASD, BESD, and SD, respectively). Adsorption capacities range from 8.3 to 22.6 mg/g for SD samples. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17826899/Removal_of_Cr_VI__from_aqueous_solutions_using_modified_red_pine_sawdust_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01151-X DB - PRIME DP - Unbound Medicine ER -