Removal of Methylene Blue from Aqueous Solution by Bone Char
Source abstract
Abstract
Bone char was prepared from bovine bone for the removal of methylene blue from aqueous solution. The effects of particle size, contact time, and adsorption temperature on the removal rate of methylene blue were investigated. It was found that bone char particle size had an insignificant effect. The equilibration time was found at approximately 80 min. The removal rate decreased with an increase in temperature. The intraparticle diffusion was the main rate-limiting step. The experimental data was analyzed by kinetic, isotherm, and thermodynamic equations. The results show that the pseudo-second-order kinetic model and Freundlich, Temkin, and Dubinin–Kaganer–Radushkevich isotherm models are true of the adsorption process. The spontaneous and exothermic ion-exchange adsorption process was certified by the negative values of free energy change and enthalpy change, and 13.29 kJ mol−1 of adsorption energy.
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Research context
OpenAlex topics: Adsorption and biosorption for pollutant removal · Analytical chemistry methods development · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Earth and Environmental Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
Department of Nonferrous Metallurgy, School of Metallurgy, Northeastern University, 3 Wenhua Road, Shenyang 110819, China
Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
Funding
China Scholarship Council
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