Separation of Cadmium Using a new Adsorbent of Modified Chitosan with Pyridine Dicarboxyamide derivative and application in different samples

被引:11
作者
Garoub, Mohannad [1 ]
Gado, Mohamed [2 ]
机构
[1] Umm Al Qura Univ, Fac Publ Hlth & Hlth Informat, Occupat Hlth Dept, Mecca, Saudi Arabia
[2] Nucl Mat Author, Geol Isotopes, Cairo, Egypt
来源
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2022年 / 648卷 / 14期
关键词
Cadmium; Adsorption; Cadmium Separation; Chitosan; Pyridine Dicarboxyamide; HEAVY-METAL IONS; AQUEOUS-SOLUTION; REMOVAL; ADSORPTION; WASTE; WATER; THORIUM; URANIUM; THERMODYNAMICS; CHROMIUM(VI);
D O I
10.1002/zaac.202100222
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Pyridine di-carboxyamide derivative coupled chitosan (CTPO) is a new adsorbent prepared by coupling N-2,N-6-dicarbamothioylpyridine-2,6-dicarboxamide with chitosan, which offers an excellent synergistic effect for the extraction of cadmium ions. FT-IR, X-ray diffraction, and thermal analysis techniques were used to characterize the modified new chitosan adsorbent. The Langmuir isotherm model accurately represents the adsorption effect with a maximum adsorption capacity of 307 mg/g. It was noted that the adsorption or up-taking process of cadmium ions corresponded more closely to the pseudo-second order instead of pseudo-first order kinetic. The thermodynamic tools Delta S, Delta H and Delta G were also evaluated indicating endothermic and spontaneous adsorption process with a randomness increasing. The prepared new adsorbent is successfully used to extract cadmium ions from the actual leach liquor of Wadi Um-Gheig ore sample.
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页数:20
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