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吸附法处理含Pb(Ⅱ)废水的研究进展Research Advances of Pb(Ⅱ) Contaminated Wastewater Treatment by Adsorption Method
刘日辉, 姜彬慧, 陈江伟, 邓烁
Pb(Ⅱ), 吸附, 废水处理Pb(Ⅱ); Adsorption; Wastewater Treatment
《Advances in Environmental Protection》, Vol.4 No.2, 2014-04-23
Pb2+ pollution in water exerts great risks on human health and ecosystem, and Pb2+ pollution prevention has been recognized as a globally environmental challenge. Therefore, the removal of Pb2+ from contaminated water has been brought into focus around the world. Adsorption method refers to the use of adsorbent and impurities, pigment substances, toxic sub-stances and product difference between molecular attractions, thus it plays the role of separation and purification method. In this paper, the sorbents widely used for heavy metal Pb2+ removal are reviewed at first. The principle and characteristics of adsorption were briefly introduced, and the performance, the features and the corresponding research advance of various kinds of Pb2+ adsorbents including active carbon, natural organic adsorbents, natural inorganic adsorbent and synthetic adsorbent are systemically reviewed. The sorption performance, influencing factors, mechanisms, pretreatment and modeling of sorption (isotherm and kinetic models) have been discussed in detail. The recommendations of making efficient adsorbent by modification and enhancing the research of the adsorbent desorption effect were proposed at the end.