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Keywords = Nano-calcium sulfate whisker

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16 pages, 1864 KB  
Review
The Generation Process, Impurity Removal and High-Value Utilization of Phosphogypsum Material
by Xinfeng Lv and Lan Xiang
Nanomaterials 2022, 12(17), 3021; https://doi.org/10.3390/nano12173021 - 31 Aug 2022
Cited by 66 | Viewed by 5454
Abstract
As phosphogypsum constitutes a large amount of solid waste material, its purification treatment and comprehensive utilization have close connection with economic development and ecological environmental protection. For the moment, the storage quantity of phosphogypsum is still rising as a result of the increasing [...] Read more.
As phosphogypsum constitutes a large amount of solid waste material, its purification treatment and comprehensive utilization have close connection with economic development and ecological environmental protection. For the moment, the storage quantity of phosphogypsum is still rising as a result of the increasing phosphate fertilizer production to meet the food demand in China. This paper summarizes the generation process, impurity removal treatment (physical method, chemical method, heat method), high-value utilization (nanometer calcium sulfate whisker, nanometer calcium carbonate) of phosphogypsum material and some existing problems. It puts forward some views on the challenges in this field and the direction of future development. It is hoped that the investigation and summary in this paper could supply some significant information for the impurity removal and high-value utilization of phosphogypsum material as a contribution to sustainability. Full article
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