摘要
运用界面分极离子 /配位子交换原理和方法研究了小清河水中沉积物对 Pb2 +的交换吸附等温线以及赖氨酸对吸附作用的影响。研究结果得出等温线具有 1个“拐点”2个“平台”。用分级离子交换等温式求出平衡常数 k1和 k2 ,当低浓度的氨基酸存在时 ,对铅与沉积物的交换吸附起促进作用。
The isotherms of the interaction between Pb 2+ and the sediments and also the effects of lysine acid on the isotherms in the water of Xiaoqing River were studied by the theory and method of interfacial stepwise ion/coordination particle exchange.The isotherms of the interaction between Pb 2+ and the sediments were stepped, and the whole curve was formed by two curves combined together with a 'plateau' in the middle.The adsorption equilibrium constants K 1 and K 2 were calculated by the isothermal equation of surface stepwise ionexchange.Where the amino acid existed,it had a promotion to exchange adsorption of Pb 2+ with the sediments.
出处
《安全与环境工程》
CAS
2003年第1期8-10,共3页
Safety and Environmental Engineering
关键词
分级离子交换
沉积物
等温线
铅
氨基酸
小清河
stepwise ion exchange
sediment
isotherm
amino acid
water of the Xiaoqing River
