摘要
研究了XC-72型炭黑材料对亚甲基蓝的吸附。实验结果表明:亚甲基蓝在XC-72上的吸附在3h达到平衡,吸附行为符合拟二级动力学方程和Langmuir方程。当温度为20℃,pH为6.5时,最大吸附量为40.11 mg.g-1。溶液pH值的升高有利于提高吸附效果。XC-72对亚甲基蓝的吸附是一个自发熵增的吸热过程。
The adsorption of methylene blue on XC-72 carbon was investigated. The results showed that the adsorption equilibrium time of methylene blue is 3 hours. The adsorption of methylene blue on XC-72 carbon fits well the pseudosecond-order rate equation and Langmuir isotherm model. While pH is 6.5, the maximum adsorption capacity was 40.11 mg .g^-1 at 20℃. The adsorption capacity improved with the pH improving. The adsorption of methylene blue is a spontaneous, entropy increasing, endothermic process.
出处
《安徽化工》
CAS
2010年第6期31-33,41,共4页
Anhui Chemical Industry
关键词
炭黑
吸附
亚甲基蓝
carbon black
adsorption
methylene blue
