摘要
通过静态吸附实验得知赤铁矿对五氯苯酚的最大吸附量发生在pH=6,赤铁矿的等电点pH=8.5时的吸附量为最大吸附量的31%。在等电点时赤铁矿与五氯苯酚之间的吸附机理主要是氢键与表面络合吸附反应;最大吸附量pH值为6.0时赤铁矿与五氯苯酚之间的吸附机理主要是表面静电吸附反应。对赤铁矿吸附五氯苯酚前后的FTIR分析表明:吸附中赤铁矿表面的羟基与五氯苯酚C—O键起着重要作用,两者之间形成电荷-偶极矩以氢键形式的吸附。
The largest adsorption quantity of pentachlorophenol （PCP） onto hematite occurred at about pH 6 was obtained by the static state adsorption experiments. The adsorption quantity at pH 8.5 of the isoelectric point of hematite was about 31% of the largest adsorption quantity. The adsorption mechanism of hematite and pep was mainly hydrogen bond and surface complex reaction at pHzcp of 8.5 and was static electric interaction at largest adsorption quantity. The FTIR analysis of the change before and after the adsorption of pentachlorophenol on hematite indicated that C-O of pentachlorophenol and hydroxyl on the surface of hematite interacted mainly with electric charge-dipole moment as well as hydrogen bond, which played an important role in adsorption.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2008年第9期57-60,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(4037202840672028)
教育部重点科学技术研究项目(02052)
湖北省自然科学基金(2005ABA009)
