明胶水凝胶的制备及其对水中镉离子吸附研究Study on the Modification of Gelatin Hydrogel and Their Adsorption Behavior for Cadmium from Aqueous Solution
刘希东
摘要(Abstract):
针对水体重金属污染治理问题,通过单宁酸对明胶水凝胶进行改性,采用傅里叶红外变换光谱(FT-IR)、接触角测量仪对改性前后的材料进行了表征,探究了交联剂用量、水凝胶膜厚度、吸附剂用量、pH、吸附时间对改性水凝胶吸附去除水中镉离子[Cd(Ⅱ)]性能影响,并进行动力学方程拟合。结果表明, pH对水中镉离子去除率影响较大,在pH=6,0.07g厚度为0.06mm的条件下120min内达到吸附平衡,符合准一级动力学方程。
关键词(KeyWords): 明胶;单宁酸;镉;吸附
基金项目(Foundation): 天津市教育科学规划课题“基于产教融合的联合培养本科化工专业应用型人才的实践研究”(编号:VESP3025;主持人:王韬)的阶段性研究成果
作者(Author): 刘希东
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