An overview of chlorophenols as contaminants and their removal from wastewater by adsorption: A review.

Microcrystalline cellulose (MCC) based materials as emerging adsorbents for the removal of dyes and heavy metals - A review.

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Evaluation of optimum adsorption conditions for Ni (II) and Cd (II) removal from aqueous solution by modified plantain peels (MPP)

Novel alginate particles decorated with nickel for enhancing ciprofloxacin removal: Characterization and mechanism analysis.

Electro-sorption of ammonium ion onto nickel foam supported highly microporous activated carbon prepared from agricultural residues (dried Luffa cylindrica).

The biosorption potential of chemically modified onion skin (CMOS) for cadmium (II) ions (Cd2+) from its aqueous solutions at different conditions of initial Cd2+ concentration, contact time, pH, and temperature was investigated under batch mode. The results showed that biosorption of Cd2+ is influenced by these different conditions. The equilibrium biosorption data were analyzed by two-parameter (Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R)), three-parameter (Redlich-Peterson, Sips, Toth, and Khan), and four-parameter (Baudu and Fritz-Schluender) isotherm models using linear and nonlinear regression methods. The best-fitting isotherms to describe the biosorption data of the Cd2+ CMOS system were found to be those of Freundlich, Sips, and Fritz-Schluender for the two-, three-, and four-parameter models, respectively. A maximum biosorption capacity (Qmax) of 18.34 mg/g was obtained for CMOS as compared with 11.90 mg/g for raw onion skin. The biosorption kinetics followed a pseudo second-ord...

O. A. Ajani

Papers

Biosorptive Removal of Cadmium (II) Ions from Aqueous Solution by Chemically Modified Onion Skin: Batch Equilibrium, Kinetic and Thermodynamic Studies