Activated Carbons Derived FromOrganic Sewage Sludge For The RemovalOf Mercury From Aqueous Solution
Activated Carbons Derived FromOrganic Sewage Sludge For The RemovalOf Mercury From Aqueous Solution
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源自有机污水污泥的活性炭用于去除水溶液中的汞
DOI：
10.2495/wmj040101
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
J. Nriagu
中科院分区：
文献类型：
--
作者：
Fu;H. Itoh;J. Nriagu
使用 H2SO4、H3PO4 和 ZnCl2 作为化学活化试剂，从有机污水污泥 (SS) 中开发出各种类型的活性炭。检查了SS碳的表面形貌，并广泛讨论了化学试剂的活化机制。活性炭的表面积在289-555m 2 /g之间。 ZnCl2活性炭对Hg(II)的吸附能力最高，其次是H3PO4和H2SO4活性炭，吸附遵循Freundlich等温线模型。 SS碳中As、Cr(VI)、Cd、Hg和Pb的浸出量低于日本环境省颁布的废水处理限值。因此，据信本研究开发的活性炭用于工业废水脱汞是安全且实用的。
Various types of activated carbons were developed from organic sewage sludge (SS) using H2SO4, H3PO4 and ZnCl2 as chemical activation reagents. The surface morphology of the SS carbons was examined, and the activation mechanisms of the chemical reagents were extensively discussed. The surface areas of the activated carbons were within 289-555 m 2 /g. ZnCl2 activated carbon had the highest adsorption capability for Hg(II), followed by H3PO4 and H2SO4 activated carbons, and the adsorption followed the Freundlich isotherm model. The leaching amount of As, Cr(VI), Cd, Hg and Pb from the SS carbons was below the wastewater disposal limits issued by the Ministry of Environment of Japan. Accordingly, it is believed that the activated carbons developed in this study are safe and practical for utilization in mercury removal from industrial wastewater.