A green strategy toward extraction of cadmium(II) during the transformation from arsenic-rich flue dust to scorodite

Chen, Xi; Tang, Xincun; Rong, Zhuoxian; Wu, Liping; Deng, Pin; Wang, Yang; Li, Xing; Huang, Liuchun; Dang, Wei

doi:10.1016/j.hydromet.2020.105489

Cited by 13 publications

(1 citation statement)

References 33 publications

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“…Hydrogen peroxide (H 2 O 2 ) solution can be used as the leaching agent and oxidizing agent for Cd leaching. H 2 O 2 leaching of As-rich dust with a Cd content of 5.78% produced from the Te smelting process indicated that the Cd leaching rate was 84.3% under the conditions of an H 2 O 2 dosage of 34.5 mL/L, a liquid-to-solid ratio of 5:1 mL/g, and a leaching time of 5 h [60]. The dust with a Cd content of 16.86% produced by a Pb and Zn smelting enterprise in Yunnan Province, China, was dissolved in a mixed H 2 SO 4 and H 2 O 2 solution.…”

Section: Hydrogen Peroxide Solution Leachingmentioning

confidence: 99%

A Critical Review on the Removal and Recovery of Hazardous Cd from Cd-Containing Secondary Resources in Cu-Pb-Zn Smelting Processes

Han

Wang

Sun

et al. 2022

Metals

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Due to the advancement of industrialization and the development of the metal smelting industry, cadmium (Cd), as a highly toxic heavy metal element, is discharged into the natural environment in the form of dust, slag, and waste solutions during the Cu-Pb-Zn smelting process, causing great harm to the soil, water environment, and human health. Meanwhile, Cd is a key component of Ni-Cd batteries and CdTe semiconductor materials. The removal and recovery of Cd from the Cu-Pb-Zn smelting process faces a dual concern with respect to resource recycling and environmental protection. This paper briefly introduces the Cd-containing secondary resources produced in the Cu-Pb-Zn smelting process, systematically reviews the recovery methods of Cd from dust, slag and waste solutions, and compares the technical principles, process parameters, separation efficiency, advantages and disadvantages, and application requirements. In addition, a new route to treat Cd-containing solutions via the foam extraction method was proposed, which has the advantages of a short reaction time, large handling capacity, high removal efficiency, and simple operation equipment, showing superior application prospects, especially for industrial bulk waste solutions with ultralow concentrations.

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Section: Hydrogen Peroxide Solution Leachingmentioning

confidence: 99%