| 1 | Heavy metals in water bodies purified by suspended substrate of rivers显示文摘The equations, which are used to describe the relationships of adsorption quantity (s) , adsorption percent (P \-a), aqueous equilibrium concentration (c) of heavy metal on river suspended substrates and the ratio of adsorbent to water( j ), are developed when heavy metal adsorption on river suspended substrate satisfies with linear adsorption equation. The results, according to the simulation from heavy metal adsorption on suspended substrates of several main Chinese rivers from a previous research report, indicated that these developed equations could describe the linear adsorption processes in practice very well, meanwhile, the adsorption equilibrium constant of adsorbent for heavy metal was an intensity factor regardless of ratio of suspended substrates to water but strongly depended on media’s pH. Furthermore, the suspended substrates of Yellow River gave stronger purification ability for Pb than for Cd and Cu. When Cd was purified by different river suspended substrates, it exhibited that the order of their purification ability for Cd was that of Songhuajiang River> Zhujiang Pearl River> Yellow River, which was consistent with their contents of cation exchange capacity(CEC). In addition, we estimated and compared the purification ability of river suspended substrates for cadmium, and the resulting purification percent was 37 64%, 64 58% and 50 98% for Songhuajiang River, Yangtze River and Zhujiang River, respectively. | ZhouDM ChenHM | 2002 | Journal of Environmental Sciences2002，14，1： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员