Adsorption studies of caesium on zirconium molybdoarsenate (ZrMAs) |
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| Institution: | 1. Nuclear Chemistry Section, School of Chemistry, Andhra University, Visakhapatnam - 530 003, India;2. Centralised Waste Management Facility, BARC, Kalpakkam - 603 102, India;1. The Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, 344090 Rostov-on-Don, Russia;2. Advanced Functional Materials & Optoelectronic Laboratory, Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia;3. Nanoscience Laboratory for Environmental and Bio-medical Applications (NLEBA), Semiconductor Lab., Department of Physics, Faculty of Education, Ain Shams University, Roxy, 11757 Cairo, Egypt;4. Department of Physics, Faculty of Science, Al-Azhar University, Assiut 71542, Egypt;1. College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, Zhejiang Province 321004, People''s Republic of China;2. College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, Zhejiang Province 321004, People''s Republic of China;1. College of Resource and Civil Engineering, Northeastern University, Shenyang 110819, PR China;2. Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, PR China |
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| Abstract: | The applicability of zirconium molybdoarsenate (ZrMAs) for efficient removal of Cs from aqueous solution by adsorption has been investigated. The kinetics of adsorption of caesium ions has been studied by using radioanalytical procedure over a concentration range (10−4−10−2 mol dm−3) and in the temperature range (303–318 K). The results showed that the uptake follows the first order rate law with respect to caesium concentration and obeys Langmuir and Modified Freundlich adsorption isotherms in the concentration studied. The effect of temperature on adsorption equilibrium has been studied and the thermodynamic quantities (ΔHo, ΔGo and ΔSo) has been evaluated. They showed that the process is exothermic in nature. |
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