The adsorption of metal ions by Rice Husk Ash

摘要：

The adsorption of some metal ions such as Fe3+, Pb2+, Cu2+, Cd2+, Zn2+ adsorbed by rice husk ash(RHA) are studied. The results show that the isotherm adsorption curves for these metal ions are in agree with Langmuir equation, and the adsorption amounts are in the order of following: Fe3+> Pb2+>Cu2+>Cd2+Zn2+. All these metal ions can reverse the sign of the zeta potential from negative to positive, and the concentrations of zero charge point for Fe3+, Pb2+, Cu2+, Cd2+, Zn2+ are 8.5×10-5, 8×10-3, 0.12, 0.16, 0.18 (mol·L-1 )respectively. Using the electronic double layer model, the adsorption energy is calculated.

关键词： husk ash adsorption zeta potential metal ion adsorption energy

作者: GONG Fu-zhong ZHOU Li-ya He Xi-pu Liao Sun-qi FENG Qing-ge

作者单位: School of chemistry and Chemical Engineering, Guangxi University, Nanning 530004,China

会议类型: 国际会议

会议名称: The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-14（万方平台首次上网日期，不代表论文的发表时间）