Pagnanelli F, Esposito A, Toro L, Vegliò F
Dipartimento di Chimica, Facoltà di S.M.F.N., Università degli Studi La Sapienza, P. le A. Moro, 5, 00185 Roma, Italy.
Water Res. 2003 Feb;37(3):627-33. doi: 10.1016/s0043-1354(02)00358-5.
Biosorption data of lead, copper, zinc and cadmium onto Sphaerotilus natans at different equilibrium pH (3-5 units) were here reported and analysed. Experimental results outlined the positive effect of pH increase on pollutant uptake and also the biomass affinity series (Pb > Cu > Zn > Cd) reflecting the hydrolytic properties of metals. An original empirical model was proposed to represent the effect of pH on heavy metal biosorption inserting q(max) vs. pH empirical functions into the classical Langmuir isotherm.
本文报道并分析了在不同平衡pH值（3 - 5个单位）下，铅、铜、锌和镉在浮游球衣菌上的生物吸附数据。实验结果概述了pH值升高对污染物吸收的积极影响，以及反映金属水解特性的生物量亲和序列（铅>铜>锌>镉）。提出了一个原始的经验模型，通过将q(max)与pH的经验函数插入经典的朗缪尔等温线中来表示pH对重金属生物吸附的影响。
