Extraction and transformation of elements in phosphogypsum by electrokinetics

Wu, Fang; Jin, Caiyue; Xie, Ruosong; Qu, Guangfei; Chen, Bangjin; Qin, Jin; Liu, Xinxin; Li, Hailin; Kuang, Lingrui

doi:10.1016/j.jclepro.2022.135688

Cited by 3 publications

(1 citation statement)

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“…Therefore, reducing the content of impurity elements in phosphogypsum, increasing the main content of calcium sulfate, and improving the harmless comprehensive utilization rate of phosphogypsum resources are of great significance to the sustainable and healthy development of the phosphorus chemical industry. In recent years, research on the occurrence state of various impurity elements in phosphogypsum and impurity removal technologies has become one of the most popular research topics among scientists and technological workers [ 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 ]. According to the contents of various elements in typical phosphogypsum in China, the scope of this review focuses on major impurity components (wt% > 1%, including silicon and phosphorus) and trace impurity components (wt% 0.01–1%, including iron, aluminum, and carbon) in phosphogypsum, excluding other minor trace and elemental impurity components (wt% < 0.01%, such as heavy metals, rare earth elements, and radioactive elements).…”

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confidence: 99%

Review of the State of Impurity Occurrences and Impurity Removal Technology in Phosphogypsum

Liu

2023

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A variety of co-existing impurities in phosphogypsum limit its large-scale and high-value utilization. This paper summarizes the common contents of major impurity components (silicon and phosphorus) and trace impurity components (fluorine, iron, aluminum, and carbon) in phosphogypsum and discusses the harm of impurity components to the comprehensive utilization of harmless phosphogypsum chemical resources. The occurrence status of impurity components in phosphogypsum and the research progress of various impurity removal technologies are summarized, and the effects of these impurity removal technologies on different contents of impurity components are evaluated. On this basis, the goal of improving the whiteness of phosphogypsum samples and the development of technology for further removal of impurities in phosphogypsum to improve the purity of the main content of calcium sulfate are speculated.

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