朱冰韧¹,厉炯慧²,沈海云³,李建丹¹,蒋予箭¹,王彦波¹,熊春华³

• 1:浙江工商大学 食品与生物工程学院，浙江 杭州 310018
• 2:浙江工商大学 环境科学与工程学院，浙江 杭州 310018
• 3:浙江工商大学 应用化学系，浙江 杭州 310018

摘要(Abstract)：

研究了大容量阴离子交换树脂D296在醋酸-醋酸钠缓冲液体系中对铬（VI）的吸附行为，同时进行了一系列实验研究系统变量对吸附量的影响。结果证明pH 3.5，温度308 K为最佳吸附条件，静态饱和吸附量为325.8 mg×g^-1，此时的吸附速率常数k₃₀₈ = 2.05×10^-5s^-1；表观吸附活化能Ea = 3.6 kJ×mol^-1。同时，热重、红外也显示了铬（VI）被吸附在树脂的表面。等温吸附符合Frundlich模型。热力学实验参数表明，该条件下吸附是自发的吸热过程。吸附后树脂可被5% NaOH-5% NaCl溶液解吸，解吸率94.7 %。研究为从废水中去除铬（VI）展示了新的可能性。

关键词(KeyWords)： D296树脂;铬（VI）;吸附等温线;动力学

Abstract:

Keywords:

基金项目(Foundation): 教育部博士点基金（20133326110006）；浙江省重点研发计划项目（2015C02018）；浙江省科技计划项目（2015C37044，2017C37036）；浙江省产业用纺织材料制备技术重点实验室开放基金。

作者(Author): 朱冰韧¹,厉炯慧²,沈海云³,李建丹¹,蒋予箭¹,王彦波¹,熊春华³

DOI: 10.3969/j.issn.1003-9015.2017.03.033

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