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| 硝酸镧改性聚丙烯酸对水中氟离子的吸附试验探讨 |
| Study on Adsorption of Fluorine Ion from Water with Acrylic Composite Resin Modified by Lanthanum Nitrate |
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| DOI： |
| 中文关键词: 丙烯酸树脂 氟化物 改性 吸附 水质 |
| 英文关键词: Acrylic composite resin Fluoride Modification Adsorption Water quality |
| 基金项目:河南省科学技术厅科技计划基金资助项目（162300410270）；焦作市科技局科技计划基金资助项目（2014400038） |
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| 中文摘要: |
| 以丙烯酸为原料，乙二醇二甲基丙烯酸酯为交联剂制得聚丙烯酸树脂（PAA），用于制备表面粗糙、介孔丰富的镧（Ⅲ）改性聚丙烯酸复合树脂(La PAA)。试验表明，当500 mg/L氟离子溶液pH值为5、吸附时间为300 min时，La PAA对氟离子的去除率在90%以上。Langmuir方程能较好地拟合氟离子在La PAA上的吸附等温线，最大吸附量为159.24 mg/g，吸附动力学过程符合准二级动力学方程。 |
| 英文摘要: |
| Acrylic composite resin (PAA) was prepared using acrylic acid (AA) as raw materials, ethylene glycol dimethacrylate as the cross linker, and modified by lanthanum nitrate to produce La PAA adsorbent. La PAA had rough surface and abundant mesoporous. The results showed that more than 90% fluorine ion removal rate was achieved from 500 mg/L aqueous solution at adsorption time 300 min and pH 5. The fluorine ion adsorption isotherm on La PAA matched well with Langmuir's equation and the maximum adsorption capacity was 159.24 mg/g. The study indicated that adsorption kinetics was consistent with the pseudo second order kinetic equation. |
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