Biosorption kinetics of heavy metals by leaf biomass of Jatropha curcas in single and multi-metal system

Biosorption of Cu²⁺, Zn²⁺, and Cr⁶⁺ from aqueous solutions by leaf biomass of Jatropha curcas was investigated as a function of biomass concentration, initial metal ion concentration, contact time, and pH of the solution systematically. The aim of this study was to optimize biosorption process and f...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2014-03, Vol.186 (3), p.1679-1687
Main Authors: Rawat, Anand Prabha, Giri, Krishna, Rai, J. P. N
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aqueous solutions
Assessments
Atmospheric Protection/Air Quality Control/Air Pollution
Binding sites
Biodegradation, Environmental
Biomass
biosorption
chromium
Contact
Copper
Earth and Environmental Science
Ecology
Ecotoxicology
Efficiency
Environment
Environmental Management
Environmental Monitoring
equations
Equilibrium
Experimental data
Experiments
Flowers & plants
Heavy metals
Ion concentration
Jatropha - metabolism
Jatropha curcas
Kinetics
leaves
Mathematical analysis
Mathematical models
Metal concentrations
Metal ions
Metals
Metals, Heavy - analysis
Metals, Heavy - metabolism
Monitoring/Environmental Analysis
Public health
Studies
Toxicity
Waste Water
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - metabolism
zinc
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Summary:Biosorption of Cu²⁺, Zn²⁺, and Cr⁶⁺ from aqueous solutions by leaf biomass of Jatropha curcas was investigated as a function of biomass concentration, initial metal ion concentration, contact time, and pH of the solution systematically. The aim of this study was to optimize biosorption process and find out a suitable kinetic model for the metal removal in single and multi-metal system. The experimental data were analyzed using two sorption kinetic models, viz., pseudo-first- and pseudo-second-order equations, to determine the best fit equation for the biosorption of metal ions Cu²⁺, Zn²⁺, and Cr⁶⁺ onto the leaf biomass of J. curcas in different metal systems. The experimental data fitted well the pseudo-second-order equation and provided the best correlation for the biosorption process. The findings of the present investigation revealed that J. curcas leaf biomass was an eco-friendly and cost-effective biosorbent for the removal of heavy metal ions from wastewater.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-013-3485-8