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Influence of solution chemistry on Cr(VI) reduction and complexation onto date-pits/tea-waste biomaterials.
J Environ Manage. 2013 Jan 15; 114:190-201.JE

Abstract

Tea waste (TW) and Date pits (DP) were investigated for their potential to remove toxic Cr(VI) ions from aqueous solution. Investigations showed that the majority of the bound Cr(VI) ions were reduced to Cr(III) after biosorption at acidic conditions. The electrons for the reduction of Cr(VI) may have been donated from the TW and DP biomasses. The experimental data obtained for Cr(VI)-TW and Cr(VI)-DP at different solution temperatures indicate a multilayer type biosorption, which explains why the Sips isotherm accurately represents the experimental data obtained in this study. The Sips maximum biosorption capacities of Cr(VI) onto TW and DP were 5.768 and 3.199 mmol/g at 333 K, respectively, which is comparatively superior to most other low-cost biomaterials. Fourier transform infrared spectroscopic analysis of the metal loaded biosorbents confirmed the participation of -COOH, -NH(2) and O-CH(3) groups in the reduction and complexation of chromium. Thermodynamic parameters demonstrated that the biosorption of Cr(VI) onto TW and DP biomass was endothermic, spontaneous and feasible at 303-333 K. The results evidently indicated that tea waste and date pits would be suitable biosorbents for Cr(VI) in wastewater under specific conditions.

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Authors+Show Affiliations

Albadarin AB
School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Belfast BT9 5AG, Northern Ireland, UK. aalbadarin01@qub.ac.uk
Mangwandi C
No affiliation info available
Walker GM
No affiliation info available
Allen SJ
No affiliation info available
Ahmad MN
No affiliation info available
Khraisheh M
No affiliation info available

MeSH

AdsorptionArecaceaeBiomassChromiumDiffusionElectron Probe MicroanalysisHydrogen-Ion ConcentrationOsmolar ConcentrationOxidation-ReductionSpectroscopy, Fourier Transform InfraredTeaThermodynamicsTime FactorsWater Pollutants, Chemical

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

23134975

Citation

Albadarin, Ahmad B., et al. "Influence of Solution Chemistry On Cr(VI) Reduction and Complexation Onto Date-pits/tea-waste Biomaterials." Journal of Environmental Management, vol. 114, 2013, pp. 190-201.
Albadarin AB, Mangwandi C, Walker GM, et al. Influence of solution chemistry on Cr(VI) reduction and complexation onto date-pits/tea-waste biomaterials. J Environ Manage. 2013;114:190-201.
Albadarin, A. B., Mangwandi, C., Walker, G. M., Allen, S. J., Ahmad, M. N., & Khraisheh, M. (2013). Influence of solution chemistry on Cr(VI) reduction and complexation onto date-pits/tea-waste biomaterials. Journal of Environmental Management, 114, 190-201. https://doi.org/10.1016/j.jenvman.2012.09.017
Albadarin AB, et al. Influence of Solution Chemistry On Cr(VI) Reduction and Complexation Onto Date-pits/tea-waste Biomaterials. J Environ Manage. 2013 Jan 15;114:190-201. PubMed PMID: 23134975.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of solution chemistry on Cr(VI) reduction and complexation onto date-pits/tea-waste biomaterials. AU - Albadarin,Ahmad B, AU - Mangwandi,Chirangano, AU - Walker,Gavin M, AU - Allen,Stephen J, AU - Ahmad,Mohammad N M, AU - Khraisheh,Majeda, Y1 - 2012/11/05/ PY - 2012/05/20/received PY - 2012/09/04/revised PY - 2012/09/17/accepted PY - 2012/11/9/entrez PY - 2012/11/9/pubmed PY - 2013/6/13/medline SP - 190 EP - 201 JF - Journal of environmental management JO - J Environ Manage VL - 114 N2 - Tea waste (TW) and Date pits (DP) were investigated for their potential to remove toxic Cr(VI) ions from aqueous solution. Investigations showed that the majority of the bound Cr(VI) ions were reduced to Cr(III) after biosorption at acidic conditions. The electrons for the reduction of Cr(VI) may have been donated from the TW and DP biomasses. The experimental data obtained for Cr(VI)-TW and Cr(VI)-DP at different solution temperatures indicate a multilayer type biosorption, which explains why the Sips isotherm accurately represents the experimental data obtained in this study. The Sips maximum biosorption capacities of Cr(VI) onto TW and DP were 5.768 and 3.199 mmol/g at 333 K, respectively, which is comparatively superior to most other low-cost biomaterials. Fourier transform infrared spectroscopic analysis of the metal loaded biosorbents confirmed the participation of -COOH, -NH(2) and O-CH(3) groups in the reduction and complexation of chromium. Thermodynamic parameters demonstrated that the biosorption of Cr(VI) onto TW and DP biomass was endothermic, spontaneous and feasible at 303-333 K. The results evidently indicated that tea waste and date pits would be suitable biosorbents for Cr(VI) in wastewater under specific conditions. SN - 1095-8630 UR - https://www.unboundmedicine.com/medline/citation/23134975/Influence_of_solution_chemistry_on_Cr_VI__reduction_and_complexation_onto_date_pits/tea_waste_biomaterials_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-4797(12)00476-8 DB - PRIME DP - Unbound Medicine ER -