SDBS改性海藻酸钠磁球吸附水体中Cu（Ⅱ）的性能

吉林大学学报(理学版) ›› 2020, Vol. 58 ›› Issue (5): 1265-1272.

SDBS改性海藻酸钠磁球吸附水体中Cu（Ⅱ）的性能

和芹, 张红霞, 刘昌伟

唐山师范学院化学系，唐山市绿色专用化学品实验室，河北唐山 063000

收稿日期:2019-11-19 出版日期:2020-09-26 发布日期:2020-11-18
通讯作者: 和芹 E-mail:heqin0591@126.com

Adsorption Performance of SDBS Modified Sodium Alginate Magnetic Spheres for Copper（Ⅱ） in Water

HE Qin, ZHANG Hongxia, LIU Changwei

Tangshan Key Laboratory of Green Specialty Chemicals, Department of Chemistry, Tangshan Teacher’s College, Tangshan 063000, Hebei Province，China

Received:2019-11-19 Online:2020-09-26 Published:2020-11-18

摘要/Abstract

摘要： 以FeCl₃·6H₂O，FeCl₂·4H₂O和NaOH为原料，先制备磁流体 Fe₃O₄，再制备十二烷基苯磺酸钠（SDBS）改性海藻酸钠磁球，通过单因素实验考察溶液pH值、初始质量浓度、吸附时间和温度对磁球吸附水体中Cu²⁺的影响，并在B3LYP/6-31G^**水平上模拟海藻酸钠阴离子与Ca²⁺和Cu²⁺的配位特点. 实验结果表明：在25 ℃，吸附 80 min，初始质量浓度为100 mg/L，pH=4时，最大吸附量为116.6 mg/g；Cu²⁺比Ca²⁺的成键能力强.

关键词: 海藻酸钠磁球, 静态吸附, 动力学模拟

Abstract: Using FeCl₃·6H₂O，FeCl₂·4H₂O and NaOH as raw materials, the magnetic fluid Fe₃O₄ was prepared firstly, and then sodium dodecyl benzene sulfonate (SDBS) modified sodium alginate (SA) magnetic spheres were prepared. The effects of pH value, initial mass concentration, adsorption time and temperature on the adsorption of Cu²⁺ in the water were investigated by single factor experiment, the coordination characteristics of SA anion and Ca²⁺ and Cu²⁺ were simulated at the level of B3LYP/6-31G^**. The results show that at 25 ℃, the adsorption time is 80 min, the mass concentration of Cu²⁺ is 100 mg/L and pH=4, the maximum adsorption amount is 116.6 mg/g, and the bonding ability of Cu²⁺ is stronger than that of Ca²⁺.

Key words: sodium alginate magnetic sphere, static adsorption, dynamic simulation

中图分类号:

和芹, 张红霞, 刘昌伟. SDBS改性海藻酸钠磁球吸附水体中Cu（Ⅱ）的性能[J]. 吉林大学学报(理学版), 2020, 58(5): 1265-1272.

HE Qin, ZHANG Hongxia, LIU Changwei. Adsorption Performance of SDBS Modified Sodium Alginate Magnetic Spheres for Copper（Ⅱ） in Water[J]. Journal of Jilin University Science Edition, 2020, 58(5): 1265-1272.

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