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| Research progress on the treatment of heavy metal wastewater by phosphogypsum |
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Received:June 29, 2022
Revised:July 14, 2022
Accepted:July 15, 2022
Published Online:October 25, 2022
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| DOI： |
| KeyWord:phosphogypsum;modification;heavy metals ions;adsorption;treating waste with another waste |
| Author | Institution |
| CEHN Jia-ling |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
| XIE Hai-yun |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
| ZHANG Pei |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
| JIN Yan-ling |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
| ZENG Peng |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
| GAO Li-kun |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
| CAO Guang-zhu |
Faculty of Land and Resources Engineering, Kunming University of Science and Technology |
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| Abstract: |
| Phosphogypsum is an industrial solid waste discharged by the phosphorus chemical industry, which has a large output and low comprehensive utilization rate. A large number of phosphogypsum was stored in the open, which leads to high ecological risks and serious waste of resources. Heavy metal ions are adsorbed due to the unique physicochemical properties of phosphogypsum, which has broad application prospects in the field of environmental governance. However, the adsorption performance of untreated phosphogypsum is weak, and the adsorption capacity of phosphogypsum on heavy metal ions is significantly improved by high temperature calcination, microwave induction, alkalinization modification and surface modification. In addition, calcium sulfate whiskers and hydroxyapatite prepared from phosphogypsum are suitable heavy metal ion adsorbents. In this paper, the dilemma of phosphorus gypsum resource utilization and the research status of phosphogypsum for adsorption of heavy metal ions in water were mainly reviewed, and the application prospects and urgent problems of phosphorgypsum in the field of treatment of heavy metal wastewater were analyzed. |
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