活性炭对直接湖蓝5B的吸附研究  

Study on the Adsorption of Direct Sky Blue 5B Using Activated Carbon

作　　者：房平[1,2] 邵瑞华[1,2] 任娟[3] 

机构地区：[1]西安建筑科技大学环境与市政学院,西安710055 [2]西安工程大学环境与化学工程学院,西安710048 [3]西安工程大学纺织与材料学院,西安710048

出　　处：《工业安全与环保》2011年第6期54-56,共3页Industrial Safety and Environmental Protection

基　　金：科技部国家科技人员服务企业行动计划(2009GJA10014);国家水体污染控制与治理科技重大专项(2008ZX07314-003-2)

摘　　要：用活性炭对直接湖蓝5B模拟废水进行了吸附实验。考察了投炭量、吸附时间、废水初始浓度和pH值对吸附效果的影响,并对其吸附动力学特征进行了探讨。结果表明,废水pH值、吸附时间和投炭量对吸附效果有明显影响,而反应温度变化对吸附量的影响不明显。以吸附率作为控制指标,通过正交实验得出各因素影响大小排序为:pH值>废水浓度>吸附时间>投碳量;在室温下,pH值为3,投碳量1 g/L,反应时间60 min,初始质量浓度10 mg/L为最佳反应条件;对于不同浓度的直接湖蓝5B的伪二级动力学方程拟合程度比较高,能够真实地反映染料在污泥活性炭上的吸附机理。Sky Blue 5B adsorption experiment is conducted by activated carbon.The factors that might affect the adsorption performance of activated carbon are investigated,such as pH values,adsorption time,reaction temperature,activated carbon dosage and the initial concentration of Sky Blue 5B.The results indicate that pH values,adsorption time,activated carbon dosage impacts the adsorption effect,but reaction temperature has little effect on it.When absorption rate is regarded as evaluating index,it is confirmed that the effects of various factors on absorption rate are in the following descending order through the orthogonal experiment： pHinitial concentration of Sky Blue 5Badsorption timeactivated carbon dosage;the optimum reaction condition are obtained as follows： pH 3,activated carbon dosage 1 g/L,adsorption time 60 min,initial concentration of Sky Blue 5B is 10 mg/L;Pseudo second-order kinetic equation is better fit at the Sky Blue 5B adsorption and it can explain activated carbon adsorptive mechanism on Sky Blue 5B.

关 键 词：活性炭 吸附 直接湖蓝5B 

分 类 号：X791[环境科学与工程—环境工程]