@article{oai:tsukuba.repo.nii.ac.jp:00029071,
 author = {丁, 大虎 and 張, 振亜 and 雷, 中方 and 楊, 英男 and Ding, Dahu and Zhao, Yingxin and Yang, Shengjiong and Shi, Wansheng and Zhang, Zhenya and Lei, Zhongfang and Yang, Yingnan},
 issue = {7},
 journal = {Water Research},
 month = {May},
 note = {A novel biosorbent derived from agricultural residue – walnut shell (WS) is reported to remove cesium from aqueous solution. Nickel hexacyanoferrate (NiHCF) was incorporated into this biosorbent, serving as a high selectivity trap agent for cesium. Field emission scanning electron microscope (FE-SEM) and thermogravimetric and differential thermal analysis (TG-DTA) were utilized for the evaluation of the developed biosorbent. Determination of kinetic parameters for adsorption was carried out using pseudo first-order, pseudo second-order kinetic models and intra-particle diffusion models. Adsorption equilibrium was examined using Langmuir, Freundlich and Dubinin–Radushkevich adsorption isotherms. A satisfactory correlation coefficient and relatively low chi-square analysis parameter χ2 between the experimental and predicted values of the Freundlich isotherm demonstrate that cesium adsorption by NiHCF-WS is a multilayer chemical adsorption. Thermodynamic studies were conducted under different reaction temperatures and results indicate that cesium adsorption by NiHCF-WS is an endothermic (ΔH° > 0) and spontaneous (ΔG° < 0) process.},
 pages = {2563--2571},
 title = {Adsorption of cesium from aqueous solution using agricultural residue – Walnut shell: Equilibrium, kinetic and thermodynamic modeling studies},
 volume = {47},
 year = {2013}
}