文章基本信息

标题：Effect of salinity on the precipitation of dissolved metals in the wastewater that produced during fly ash disposal
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作者：Lina Lv ; Yanling Yang ; Junguo Tian 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：121
期号：3
页码：032012
DOI：10.1088/1755-1315/121/3/032012
语种：English
出版社：IOP Publishing
摘要：In this study, a salinity wastewater was produced during the fly ash treatment in the waste incineration plant. Chemical precipitation method was applied for heavy metals removal in the salinity wastewater. The effect of salinity on the removal of dissolved heavy metal ions (Zn²⁺, Cu²⁺, Pb²⁺, Ni²⁺ and Cd²⁺) was studied, especially on the removal of Pb²⁺ and Cd²⁺. Because of the formation of [PbCl₃]^- and [PbCl₄]^2- complexes, the residual concentration of dissolved Pb²⁺ increased from 0.02 mg/L to 4.08 mg/L, as the NaCl concentration increased from 0 % to 10 %. And the residual concentration of dissolved Cd²⁺ increased from 0.02 mg/L to 1.39 mg/L, due to the formation of [CdCl₃]^-, [CdCl₄]^2- and [CdCl₆]^4- complexes.