核化学与放射化学2012，Vol.34Issue(6)：369-373,5.
离子强度、pH和腐殖酸浓度对63Ni(Ⅱ)在γ-Al2O3上吸附的影响
Effect of Ionic Strength, Temperature and Humic Substances Concentration on the Sorption of 63Ni(Ⅱ) to γ-Al2O3
摘要
Abstract
The sorption of 63Ni( II ) on y-Al2O3 was studied by using batch technique. The effect of contact time, pH, ionic strength, y-Al2O3 content and humic acid on the sorption of 63Ni( II ) on y-Al2O3 was investigated under ambient conditions. The results suggest that the sorption of 63Ni( II ) is strongly dependent on ionic strength at low pH values, and independent on it at high pH values. The sorption of 63Ni( II ) at low pH is mainly dominated by ion exchange and/or outer-sphere surface complexation, whereas the sorption of 63Ni( II ) at high pH is mainly dominated by inner-sphere surface complexation. The presence of humic acid enhances 63Ni( II ) sorption to HA-y-Al2O3 hybrids at low pH values, but reduces 63Ni( II ) sorption to HA-r-Al2O3 hybrids at high pH values.关键词
γ-Al2O3/吸附/63Ni(Ⅱ)/腐殖酸Key words
r-Al203/ sorption/ 63Ni( II ) / humic acid分类
能源科技引用本文复制引用
刘正杰,陈磊,董云会,李月云,胡君,王平..离子强度、pH和腐殖酸浓度对63Ni(Ⅱ)在γ-Al2O3上吸附的影响[J].核化学与放射化学,2012,34(6):369-373,5.基金项目
国家自然科学基金资助项目(21107115) （21107115）
山东省自然科学基金资助项目(ZR2009BM045) （ZR2009BM045）
