Equilibrium, kinetic, and thermodynamic studies of the Ca2+ and Mg2+ ions removal from water by Duolite C206A

被引：7
作者：
Mountadar, S. [1 ,2 ]
Hayani, A. [1 ]
Rich, A. [2 ]
Siniti, M. [2 ]
Tahiri, S. [1 ]
机构：
[1] Univ Chouaib Doukkali, Fac Sci El Jadida, Dept Chem, Lab Water & Environm, El Jadida, Morocco
[2] Univ Chouaib Doukkali, Fac Sci El Jadida, Dept Chem, Team Thermodynam Catalysis & Surfaces, El Jadida, Morocco
来源：
SOLVENT EXTRACTION AND ION EXCHANGE | 2018年 / 36卷 / 03期
关键词：
Duolite C206A resin; ions exchange; Ca2+ and Mg2+; static-batch mode; kinetic and thermodynamic studies; AQUEOUS-SOLUTION; METHYLENE-BLUE; HEAVY-METAL; EXCHANGE-RESINS; WASTE-WATER; ADSORPTION; SAWDUST; BATCH; DYE; BIOSORPTION;
D O I：
10.1080/07366299.2018.1478369
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The uptake of Ca2+ and Mg2+ ions from synthetic aqueous solutions by Duolite C206A was studied in static-batch mode. Results revealed that there is no need of pH adjustment. The equilibrium is reached after 30min with 0.5g of resin at 25 degrees C. Equilibrium data were well fitted by Langmuir isotherm model. Maximum uptake capacities Q(max) were about 23.04mg Mg2+/g and 64.10mg Ca2+/g. The pseudo-second-order model was found as the best to explain the ions exchange kinetics effectively. The uptake of Ca2+ and Mg2+ ions by Duolite C206A is exothermic and the process is spontaneous.
引用
收藏
页码：315 / 329
页数：15
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