摘要
采用溶胶-凝胶法制备二氧化硅吸附剂,以亚甲基蓝溶液模拟染料废水,进行了吸附脱色实验。考察了吸附时的pH、温度、浓度、吸附剂用量等因素。在较低的温度（10-25℃）和较宽的pH范围（2-11）内,二氧化硅吸附剂对于亚甲基蓝有较好的吸附效果,其最高脱色率能够达到99.5%。
The silica absorbent is prepared by sol-gel method,and the adsorption of methylene blue by silica is studied.It is found that the adsorption capacity of methylene blue depends on pH of solution,temperature,initial concentration and the dosage of absorbent.When the solution is in the low temperature（10-25 ℃） and a wide range of pH（2-11）,the adsorptive effect of silica to methylene blue is good,and the highest decolorization rate is found to be 99.5%.
出处
《环保科技》
2010年第3期23-25,共3页
Environmental Protection and Technology
关键词
二氧化硅
吸附剂
亚甲基蓝
脱色率
silica
absorbent
methylene blue
decolorization rate
