摘要
为了利用海洋藻类原料廉价、吸附容量大、无二次污染等优点来处理回收含重金属的工业废水，本文对螺旋藻干粉吸附水溶液中Ｃｕ２＋的动力学和溶液ｐＨ值对其影响作了初步研究。结果显示螺旋藻吸附Ｃｕ２＋分两步进行：第一步速度快，被认为是金属离子与藻表面的物理吸附；第二步速度慢，为化学吸附过程。ｐＨ值是影响吸附的主要因素，最佳吸附ｐＨ值为５．７～６．７。用Ｆｒｅｕｎｄｌｉｃｈ方程模拟吸附等温线，拟合良好。
Preliminary research was carried out on the kinetics and influence of pH on the adsorption of copper ion by the spiral algal powder in order to treat the industrial wastewater containing the heavy metals due to its advantages of low cost raw material,big adsorbing capacity and no secondary pollution etc.The results showed that the adsorption processes were carried out in two steps:(1) rapid one,being the physical adsorption between the metal ion and the algae surface;(2) slow one,being the chemical adsorption. pH was the major factor influencing the adsorption capacity,the optimal pH for the adsorption was between 5.7～6.7.Freundlich equation fitted very well the adsorption isotherms.
出处
《海洋环境科学》
CAS
CSCD
北大核心
1998年第2期8-11,共4页
Marine Environmental Science
基金
国家自然科学基金
