膨润土吸附处理水中结晶紫染料研究

对比研究了膨润土和活性炭对结晶紫染料的吸附性能．结果显示三种受试膨润土对结晶紫的最大吸附量分别达到了1．95、1．25、1．38mmol／g，而活性炭的最大吸附量为0．77mmol／g；结晶紫初始浓度小于6mmol／L时，膨润土及活性炭对其去除率均接近100％，当结晶紫初始浓度达到11mmol／L时，膨润土对其去除率仍大于99％，而活性炭对其去除率则下降到68％．膨润土可作为结晶紫廉价、高效的吸附剂．吸附结晶紫后的膨润土可吸附水中疏水性有机物，对萘的去除效率可达90％，从而实现了膨润土的综合利用．

Research on crystal violet in Bentonite Sorption Treatment

Sorption of crystal violet to bentonite and activated carbon is compared in this study. The results showed that the maximum sorption amounts of crystal violet on the tested three bentonites reaches 1.95, 1.25 and 1.38 mmol/g respectively, while it is 0.77 rmnol/g on the activated carbon. When the initial concentration of crystal violet is within 6 mmol/L, the removal efficiencies by both bentonite and activated carbons are close to 100% ; as the initial concentration approaches ll mmol/L, the removal efficiencies by the bentonites still remains close to 100%, while it decreases to 68% with the respect of activated carbon. Thereby bentonite can be suitable sorbent for removing crystal violet from water. After the adsorption of crystal violet, bentonites can be used as sorbems for the hydrophobic organic compounds, and the removal efficiency of naphthalene reaches 90%.