朱冰韧,厉炯慧,沈海云,李建丹,蒋予箭,王彦波,熊春华

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

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pH3.5,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k_(308)=2.05×10~(-5)s~(-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,厉炯慧,沈海云,李建丹,蒋予箭,王彦波,熊春华

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