化工进展2017，Vol.36Issue(2)：735-741,7.DOI:10.16085/j.issn.1000-6613.2017.02.046
有机膨润土对模拟废水中苯酚的吸附特性
Adsorption of phenol from simulated wastewater by organic bentonite
摘要
Abstract
Commercial organic bentonite was used as adsorbent to treat the phenol simulated wastewater. The microstructure and surface chemical properties of organic bentonite were characterized by N2 physical adsorption analyzer,scanning electron microscope(SEM)and Fourier transform infrared spectroscopy(FTIR). Effects of adsorption time,dosage of adsorbent,temperature and solution pH on phenol adsorption performance were investigated and the kinetic characteristics in adsorption process was also studied. The results showed that organic bentonite belongs to the typical mesoporous materials in which the specific surface area and total pore volume can reach 31.7m2/g and 0.113cm3/g,and the pore size distribution is in the range of 3—24nm. Moreover,the organic bentonite exhibits obvious lamellar structure and rich surface functional groups. Adsorption time,adsorbent dosage,temperature and solution pH are the important factors on phenol removal. When adsorption time is 120min,adsorbent dosage is 2g,temperature is 30℃and solution pH is 7,the phenol removal rate and adsorption capacity of organic bentonite can reach 71.32% and 1.78 mg/g,respectively. The adsorption of phenol on organic bentonite follows the pseudo - second- order kinetic model.关键词
有机膨润土/苯酚/废水/吸附/动力学/脱除率Key words
organic bentonite/phenol/waste water/adsorption/kinetics/removal rate分类
矿业与冶金引用本文复制引用
陈焕利,邢宝林,谌伦建,徐冰,苏毓,郭晖..有机膨润土对模拟废水中苯酚的吸附特性[J].化工进展,2017,36(2):735-741,7.基金项目
国家自然科学基金（51404098，51174077）及河南省国际科技合作项目（152102410047）。 （）
