Tags

Type your tag names separated by a space and hit enter

Removal of Cr(VI) from aqueous solutions using pre-consumer processing agricultural waste: a case study of rice husk.
J Hazard Mater. 2009 Feb 15; 162(1):312-20.JH

Abstract

This paper reports the feasibility of using pre-consumer processing agricultural waste to remove Cr(VI) from synthetic wastewater under different experimental conditions. For this, rice husk, has been used after pre-treatments (boiling and formaldehyde treatment). Effect of various process parameters, namely, pH, adsorbent dose, initial chromium concentration and contact time has been studied in batch systems. The removal of chromium was dependent on the physico-chemical characteristics of the adsorbent, adsorbate concentration and other studied process parameters. Maximum metal removal was observed at pH 2.0. The efficiencies of boiled and formaldehyde treated rice husk for Cr(VI) removal were 71.0% and 76.5% respectively for dilute solutions at 20gl(-1) adsorbent dose. The experimental data were analyzed using Freundlich, Langmuir and Dubinin-Radushkevich (D-R) isotherm models. It was found that Freundlich and D-R models fitted well. The results revealed that the hexavalent chromium is considerably adsorbed on rice husk and it could be an economical method for the removal of hexavalent chromium from aqueous systems. FTIR and SEM were recorded, before and after adsorption, to explore number and position of the functional groups available for Cr(VI) binding on to studied adsorbents and changes in adsorbent surface morphology.

Links

Publisher Full Text

Authors+Show Affiliations

Bansal M
Department of Civil Engineering, National Institute of Technology, Kurukshetra 136119, India.
Garg U
No affiliation info available
Singh D
No affiliation info available
Garg VK
No affiliation info available

MeSH

AdsorptionAgricultureChromium CompoundsFormaldehydeHydrogen-Ion ConcentrationIndustrial WasteMicroscopy, Electron, ScanningOryzaSeedsSolutionsSpectroscopy, Fourier Transform InfraredSurface PropertiesThermodynamicsWaste Disposal, FluidWater

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18573603

Citation

Bansal, Manjeet, et al. "Removal of Cr(VI) From Aqueous Solutions Using Pre-consumer Processing Agricultural Waste: a Case Study of Rice Husk." Journal of Hazardous Materials, vol. 162, no. 1, 2009, pp. 312-20.
Bansal M, Garg U, Singh D, et al. Removal of Cr(VI) from aqueous solutions using pre-consumer processing agricultural waste: a case study of rice husk. J Hazard Mater. 2009;162(1):312-20.
Bansal, M., Garg, U., Singh, D., & Garg, V. K. (2009). Removal of Cr(VI) from aqueous solutions using pre-consumer processing agricultural waste: a case study of rice husk. Journal of Hazardous Materials, 162(1), 312-20. https://doi.org/10.1016/j.jhazmat.2008.05.037
Bansal M, et al. Removal of Cr(VI) From Aqueous Solutions Using Pre-consumer Processing Agricultural Waste: a Case Study of Rice Husk. J Hazard Mater. 2009 Feb 15;162(1):312-20. PubMed PMID: 18573603.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Cr(VI) from aqueous solutions using pre-consumer processing agricultural waste: a case study of rice husk. AU - Bansal,Manjeet, AU - Garg,Umesh, AU - Singh,Diwan, AU - Garg,V K, Y1 - 2008/05/15/ PY - 2008/03/04/received PY - 2008/05/08/revised PY - 2008/05/08/accepted PY - 2008/6/25/entrez PY - 2008/6/25/pubmed PY - 2009/4/3/medline SP - 312 EP - 20 JF - Journal of hazardous materials JO - J Hazard Mater VL - 162 IS - 1 N2 - This paper reports the feasibility of using pre-consumer processing agricultural waste to remove Cr(VI) from synthetic wastewater under different experimental conditions. For this, rice husk, has been used after pre-treatments (boiling and formaldehyde treatment). Effect of various process parameters, namely, pH, adsorbent dose, initial chromium concentration and contact time has been studied in batch systems. The removal of chromium was dependent on the physico-chemical characteristics of the adsorbent, adsorbate concentration and other studied process parameters. Maximum metal removal was observed at pH 2.0. The efficiencies of boiled and formaldehyde treated rice husk for Cr(VI) removal were 71.0% and 76.5% respectively for dilute solutions at 20gl(-1) adsorbent dose. The experimental data were analyzed using Freundlich, Langmuir and Dubinin-Radushkevich (D-R) isotherm models. It was found that Freundlich and D-R models fitted well. The results revealed that the hexavalent chromium is considerably adsorbed on rice husk and it could be an economical method for the removal of hexavalent chromium from aqueous systems. FTIR and SEM were recorded, before and after adsorption, to explore number and position of the functional groups available for Cr(VI) binding on to studied adsorbents and changes in adsorbent surface morphology. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18573603/Removal_of_Cr_VI__from_aqueous_solutions_using_pre_consumer_processing_agricultural_waste:_a_case_study_of_rice_husk_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00724-3 DB - PRIME DP - Unbound Medicine ER -