Li Fu1,2, Xianying Xu1,2,*, Guiquan Fu2, Renduo Zhang3, Hujun Liu2
Journal of Renewable Materials, Vol.8, No.7, pp. 801-818, 2020, DOI:10.32604/jrm.2020.09369
Abstract The aim of this study was to investigate adsorption and desorption characteristics of cadmium ion (Cd(II)) by ash-free biochars and the adsorption
mechanism. Biochars were prepared using peanut shell, bamboo, and Sophora
japonica Linn. Ash-free biochars were obtained by treating the biochars with acid
elution. Adsorption and desorption data from batch experiments were analyzed
using the Langmuir and Freundlich models and three adsorption kinetics models
(i.e., the Pseudo second-order, Elovich model, and the Intraparticle diffusion models). Results showed that the acid elution improved the pore structure of biochars,
increased C content and aromatic functional group content, enhanced biochars
hydrophobicity and… More >
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