期刊论文

Adsorption of Methyl Orange on Modified Activated Carbon

中文

过程工程学报

The Chinese Journal of Process Engineering

1009-606X

2016

16

2

222-227

国家自然科学基金资助项目(编号:21176086)； 湖南省“十二五”重点学科和湖南省高校科技创新团队支持计划资助项目；

本校为第一机构

用盐酸和氨水对活性炭进行改性获得改性活性炭,将其用于处理甲基橙废水,考察了改性条件、振荡速度和温度等因素对甲基橙吸附性能的影响,采用吸附等温模型和吸附动力学模型进行拟合,并分析吸附过程的热力学特征.结果表明,盐酸改性活性炭对甲基橙的吸附效果优于氨水改性活性炭,在甲基橙初始浓度60 mg/L、溶液体积50 mL、温度20℃、振荡速度100 r/min、盐酸改性活性炭投加量0.2 g时,24 h基本达到吸附平衡,甲基橙去除率为93.7%.不同温度下,盐酸改性活性炭对甲基橙的吸附符合Langmuir(R_C~2>0.95)和Freundlich(R_C~2>0.97)吸附等温模型,饱和吸附量达112.7 mg/g. 热力学参数?G~00,?S~0>0,表明盐酸改性...

Activated carbon was modified by hydrochloric acid and aqueous ammonia and used as adsorbent to remove methyl orange (MO) from wastewater. The effects of modification condition, shaking speed and temperature on its adsorption performance of MO were examined. The adsorption data were simulated by both adsorption isotherm and kinetic models, and the adsorption thermodynamics was also analyzed. The results showed that the adsorption capacity of hydrochloric acid modified activated carbon for MO was better than that of ammonia modified one. The ads...