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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 12, No. 9, 2015, pp. 2867-2880
Bioline Code: st15269
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 12, No. 9, 2015, pp. 2867-2880

 en Chemical modification of Byrsonima crassifolia check for this species in other resources with citric acid for the competitive sorption of heavy metals from water
Monroy-Figueroa, J.; Mendoza-Castillo, D. I.; Bonilla-Petriciolet, A. & Pérez-Cruz, M. A.

Abstract

This study reports the chemical modification of the Byrsonima crassifolia check for this species in other resources biomass with citric acid to improve its sorption properties for the removal of cadmium and nickel ions from aqueous solutions under competitive sorption conditions (i.e., multicomponent solutions). The best operating conditions of the chemical modification process were identified using the signal-to-noise ratio to enhance the metal uptakes and to reduce the competitive sorption effects during the simultaneous removal of these metals using the modified biomass. Results indicated that both the sorption capacity and selectivity for heavy metal removal can be improved in multicomponent metal solutions. This improvement in sorption properties of B. crassifolia biomass is mainly related to an increment of the acidic functional groups on the biomass surface caused by the chemical reaction between citric acid and this lignocellulosic material. The methodology reported in this study can be used to increase the sorption properties of other biomasses for the effective removal of toxic pollutants from multicomponent solutions and for the synthesis of sorbents with tailored sorption properties.

Keywords
Byrsonima crassifolia; Wastewater treatment; Sorption; Heavy metals; Chemical modification

 
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