Related Experiment Video
Updated: May 8, 2026

Electric Cell-Substrate Sensing for Real-Time Evaluation of Metal-Organic Framework Toxicological Profiles
Published on: May 26, 2023
Toxic metals biosorption by Jatropha curcas deoiled cake: equilibrium and kinetic studies
Anand P Rawat1, Monica Rawat, J P N Rai
1Ecotechnology Laboratory, Department of Environmental Sciences, G. B. Pant University of Agriculture & Technology, Pantnagar-263145, India.
Abstract:
The equilibrium sorption of Cr(VI) and Cu(II) from aqueous solution using Jatropha curcas deoiled cake, has been studied with respect to adsorbent dosage, contact time, pH, and initial metal concentration in batch mode experiments. Removal of Cu(II) by deoiled cake was greater than that of Cr(VI). The adsorbent chemical characteristics, studied by Fourier transform-infrared analysis, suggested that the presence of Cr(VI) and Cu(II) in the biomass influenced the bands corresponding to hydroxyl and carboxyl groups. Desorption studies revealed that maximum metals recovery was achieved by HNO3 followed by CH3COOH and HCl. The Freundlich isotherm model showed good fit to the equilibrium adsorption data. The adsorption kinetics followed the pseudo-second-order model, which provided the best correlation for the biosorption process, and suggested that J. curcas deoiled cake can be used as an efficient biosorbent over other commonly used sorbents for decontamination of Cr(VI)- and Cu(II)-containing wastewater.
Related Concept Videos
Microbial Bioremediation of Pesticides
Microbial Bioremediation of Hydrocarbons
Toxicokinetics: Overview
Bioremediation
Microbial Bioremediation of Uranium
Toxicity Testing in Animals
