Mercury leaching characteristics of waste treatment residues generated from various sources in Korea.
作者： Jae Han Cho , Yujin Eom , Jung-Min Park , Sang-Bo Lee , Ji-Hyung Hong
DOI: 10.1016/J.WASMAN.2013.04.004
关键词: Sludge 、 Leaching (metallurgy) 、 Bottom ash 、 Fly ash 、 Toxicity characteristic leaching procedure 、 Waste management 、 Waste treatment 、 Incineration 、 Environmental science 、 Environmental chemistry 、 Mercury (element)
摘要: In this study, mercury (Hg) leaching characteristics of the waste treatment residues (fly ash, bottom sludge, and phosphor powder) generated from various sources (municipal, industrial, medical incinerators, sewage sludge incinerator, oil refinery, coal-fired power plant, steel manufacturing fluorescent lamp recycler, cement kiln) in Korea were investigated. First, both Hg content analysis toxicity characteristic procedure (TCLP) testing was conducted for 31 collected residue samples. The showed that fly ash incinerators contained more than other However, TCLP values samples with similar varied widely based on type. Fly low high ratios (RL) further analyzed to identify major factors influence potential. Buffering capacity low-RL higher high-RL ash. speciation results suggest ashes consisted primarily low-solubility compounds (Hg2Cl2, Hg0 or HgS), whereas contain 20% high-solubility (HgCl2 HgSO4).
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