The Effect of Metal Ions on the Removal of Natural Organic Acids by Bi-Functional Resin
In this paper, based on the previous studies of natural organic acids adsorbed onto bi-functional resin, the influence of metal ions on the adsorption of humic, tannic and gallic acids by bi-function resin WJN-06 were systematically investigated. Low concentration of Ca2+ and Mg2+ in solution could decrease the resin’s adsorption capacity for gallic acids, but increased the removal rate of humic and tannic acids. Low concentration of Cu2+ and Pb2+ in solution could enhance the uptake of these three natural organic acids. However the high concentration of metal ions in solution could decrease the adsorption capacity of bi-functional resin for humic, tannic and gallic acids.
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
L. Xu et al., "The Effect of Metal Ions on the Removal of Natural Organic Acids by Bi-Functional Resin", Advanced Materials Research, Vols. 233-235, pp. 359-362, 2011