CTMAB改性膨润土对活性艳蓝的吸附性能

Absorption of CTMAB Modified Bentonite to the Reactive Brilliant Blue

采用碳酸钠-十六烷基三甲基溴化铵（CTMAB）复合法对天然膨润土进行改性,并通过红外光谱和X射线衍射分析手段对所制备的CTMAB改性膨润土进行了结构表征。以CTMAB改性膨润土为吸附剂对模拟活性艳蓝染料废水进行吸附脱色试验,结果表明：改性膨润土的脱色效果大大优于原土。在废水活性艳蓝浓度为50mg/L,pH=7,改性膨润土用量为5.0 g/L,吸附时间为50 min的条件下,模拟废水的脱色率达91.98%。

Crude bentonite was modified by using sodium carbonate and cation surfactant cetyltrimthylammonium bromide（CTMAB）.The CTMAB modified bentonite was characterized in structure by IR and XRD.Taking CTMAB modified bentonite as adsorbent,the absorption decolourization tests on the reactive brilliant blue dye wastewater are made.The results showed the CTMAB modified bentonite resulted in a stronger decolourization efficiency than the original soils,and its decolourization rat can reach 91.98% under conditions of the reactive brilliant blue 50 mg/L,pH=7,the dosage of modified bentonite 50 mg/L at the adsorption time of 50 min.