稻草秸秆基活性炭对苯酚和亚甲基蓝的吸附性能研究Studies on Adsorption Properties of Activated Carbon of Rice Straw on Phenol and Methylene Blue
韩彬;薛罡;荣达;周美华;
摘要(Abstract)：
[目的]研究稻草秸秆基活性炭对苯酚和亚甲基蓝的吸附性能。[方法]选用(NH4)2HPO4为活化剂,利用农业废弃物——稻草秸秆为原料,通过化学活化法制得3种稻草秸秆基活性炭RN-1、RN-2和RN-3。通过N2吸附-脱附等温曲线和Boehm滴定法对其表面的物理和化学性质进行表征。[结果]结果表明,预氧化处理不仅会改变活性炭表面含氧基团的含量,也对其比表面积有影响。将活性炭应用于水中的亚甲基蓝和苯酚吸附,活性炭吸附苯酚和亚甲基蓝符合拟二级动力学方程。RN-3(187.7 mg/g)具有最大的苯酚吸附量,对亚甲基蓝的最大吸附量RN-3(166.35 mg/g)和RN-1(161.00 mg/g)相近。说明活性炭对亚甲基蓝的吸附受比表面积和含氧基团的共同影响,含氧基团量的升高不利于其对亚甲基蓝的吸附。[结论]该研究为稻草秸秆的合理利用提供科学依据,以达到以废制废的目的。
关键词(KeyWords)： 稻草秸秆;活性炭;化学活化;动力学;吸附
基金项目(Foundation): 上海市重点学科建设资助项目(No.B604);; 教育部科技研究重点项目(107046)
作者(Author): 韩彬;薛罡;荣达;周美华;
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DOI:
参考文献(References)：
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