Isothermal, kinetics and thermodynamics studies of the biosorption of Pb(II) ion from aqueous solution using the scale of croaker fish (Genyonemus lineatus)

Journal of Water Reuse and Desalination

Sharaibi, Oluwabunmi J.¹  Babarinde, N. A. Adesola¹  Nkiko, Mojisola O.²  Adeogun, Abideen I.² 

[1] Department of Chemical Sciences, Olabisi Onabanjo University, Ago – Iwoye, Ogun State, Nigeria;Department of Chemistry, Federal University of Agriculture, Abeokuta, Nigeria

关键词: biosorption;    croaker fish;    isotherms;    kinetics;    scale;   

DOI  :  10.2166/wrd.2013.077

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

Biosorbent prepared from the scale of croaker fish (Genyonemus lineatus) has been used for the removal of Pb(II) ion from aqueous solution in a batch system. The effects of some important parameters such as pH, initial metal concentration, temperature and biosorbent dosage on biosorption capacity were investigated. Equilibrium time for the biosorption process is 20 and 30 min at lower and higher concentrations, respectively. The process at 28 °C is in agreement with a pseudo-second-order kinetics model. The equilibrium data obeyed the Langmuir adsorption isotherm with a maximum monolayer adsorption capacity of 14.58 mg g−1. The study showed that the sorption process depends on biomass dosage, temperature, pH and initial metal ion concentration. The calculated thermodynamics parameters (ΔGo, ΔHo and ΔSo) indicated that the biosorption of the metal ion onto fish scale is feasible, spontaneous and exothermic in nature.

【 授权许可】

CC BY-NC-ND