期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 25, 期 8, 页码 7907-7915出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-017-1079-7
关键词
Activated carbon; Fast H3PO4 activation; Copper adsorption; Adsorption mechanisms; Carboxyl groups; P-containing groups
资金
- International Joint Research and Development Project of Tianjin Talent Introduction and Science & Technology Cooperation Plan [14RCGFGX00850]
Two kinds of pinewood sawdust activated carbon adsorbents were prepared by fast activation with H3PO4 in a spouted bed, and the application in adsorption of copper ions was investigated. With only 3 min of activation time, the BET surface area of activated carbons reached 1537.5 m(2)/g for impregnation mass ratio of H3PO4 to sawdust at 1:1 and activation temperature of 500 degrees C (IR1-500), whereas it was 1750.7 m(2)/g for the impregnation ratio at 4:1 and activation temperature of 800 degrees C (IR4-800). The pseudo second-order reaction kinetics well describes the experimental adsorption of copper ion in this study, indicating chemisorption dominated in the process. By the C-1s spectrum, activated carbons from IR1-500 contained more carboxyl groups (-COOH) and carbonyl groups (C=O), which played an important role in copper ions adsorption. In addition, it was found that the P-containing groups (metaphosphates) also involved in the adsorption of copper ion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据