Study on the Adsorption Properties of Sodium Alginate-Hydrated Manganese Dioxide Functional Spheres for Cu(Ⅱ)
LIU Shan+, FENG Ting+, TIAN Xincheng, LIU Danrong, ZHANG Yue, LI Yuliang
Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, College of Environmental Science and Engineering, Chang’an University, Xi’an 710054
Abstract: Using sodium alginate (SA)and hydrated manganese dioxide(HMO) as materials, the alginate loaded manganese dioxide (SA-HMO) functional spheres (2.9—3.1 mm) were prepared by sol-gel process by embedding method. The effects of pH, initial adsorption concentration, adsorption time and temperature on the adsorption process were studied. The experimental results show that adsorption of Cu(Ⅱ) by SA-HMO functional sphere, the optimum adsorption pH was 5.5. The adsorption process of Cu(Ⅱ) reached equilibrium at 14 h, and the saturated adsorption capacity of functional spheres for Cu(Ⅱ) was 360 mg/g, the adsorption process is spontaneous, endothermic and entropy-increasing. The adsorption isotherm fitting results show that the adsorption behavior of SA-HMO to Cu(Ⅱ) is more in line with the Freundlich isotherm adsorption equation, indicating that the adsorption process may involve both the single-layer adsorption process and the multi-layer adsorption process. Pseudo-first-order and quasi-second-order kinetics models show that physical and chemical interactions are involved in the adsorption process.
作者简介: 刘珊,陕西西安人,长安大学副教授,硕士生导师,主要从事水污染控制技术研究及环境影响评价。冯婷,陕西延安人,长安大学在读硕士研究生,师从刘珊副教授,从事水污染控制研究。534148120@qq.com + These authors contributed equally to this work.
引用本文:
刘珊, 冯婷, 田薪成, 刘丹荣, 张悦, 李宇亮. 海藻酸钠-水合二氧化锰功能球对Cu(Ⅱ)的吸附性能研究[J]. 材料导报, 2019, 33(z1): 136-140.
LIU Shan, FENG Ting, TIAN Xincheng, LIU Danrong, ZHANG Yue, LI Yuliang. Study on the Adsorption Properties of Sodium Alginate-Hydrated Manganese Dioxide Functional Spheres for Cu(Ⅱ). Materials Reports, 2019, 33(z1): 136-140.
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2019, Vol. 33 
