Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification
Phosphogypsum (PG) treatment is one of the research hotspots in the field of environmental protection. Many researchers both at home and abroad have devoted themselves to studies on harmless resource treatment of PG, but the treatment technology is unable to meet the demand of PG consumption due to...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/2/462 |
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| author | Fenghui Wu Can Yang Guangfei Qu Liangliang Liu Bangjin Chen Shan Liu Junyan Li Yuanchuan Ren Yuyi Yang |
| author_facet | Fenghui Wu Can Yang Guangfei Qu Liangliang Liu Bangjin Chen Shan Liu Junyan Li Yuanchuan Ren Yuyi Yang |
| author_sort | Fenghui Wu |
| collection | DOAJ |
| description | Phosphogypsum (PG) treatment is one of the research hotspots in the field of environmental protection. Many researchers both at home and abroad have devoted themselves to studies on harmless resource treatment of PG, but the treatment technology is unable to meet the demand of PG consumption due to the huge production and storage demands. In order to solve the problem of PG pollution, this study explored the different solidified effects of various modification formulations on the hazardous components in PG, using industrial solid waste calcium carbide slag (CCS) as an alkaline regulator; Portland cement (PC), polyaluminum chloride (PAC) and CaCl<sub>2</sub> as the main raw materials of the solidification and stabilization formula and the water content in PG as the reaction medium. The results showed that CCS (0.5%), PC (0.4%) and PAC (0.3%) had a more significant solidified effect on phosphorus (P) and fluoride (F). PAC was added in two steps and reacted under normal temperature and pressure, and its leaching toxicity meets the requirements of relevant standards, which laid an excellent foundation for PG-based ecological restoration materials and filling materials, with low economic cost, simple process and strong feasibility. This will provide great convenience for the later mining and metallurgy. |
| first_indexed | 2024-03-10T00:50:10Z |
| format | Article |
| id | doaj.art-a3be35e08a7842ea9a5204ae29f981ad |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T00:50:10Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-a3be35e08a7842ea9a5204ae29f981ad2023-11-23T14:52:19ZengMDPI AGMolecules1420-30492022-01-0127246210.3390/molecules27020462Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by ModificationFenghui Wu0Can Yang1Guangfei Qu2Liangliang Liu3Bangjin Chen4Shan Liu5Junyan Li6Yuanchuan Ren7Yuyi Yang8Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaPhosphogypsum (PG) treatment is one of the research hotspots in the field of environmental protection. Many researchers both at home and abroad have devoted themselves to studies on harmless resource treatment of PG, but the treatment technology is unable to meet the demand of PG consumption due to the huge production and storage demands. In order to solve the problem of PG pollution, this study explored the different solidified effects of various modification formulations on the hazardous components in PG, using industrial solid waste calcium carbide slag (CCS) as an alkaline regulator; Portland cement (PC), polyaluminum chloride (PAC) and CaCl<sub>2</sub> as the main raw materials of the solidification and stabilization formula and the water content in PG as the reaction medium. The results showed that CCS (0.5%), PC (0.4%) and PAC (0.3%) had a more significant solidified effect on phosphorus (P) and fluoride (F). PAC was added in two steps and reacted under normal temperature and pressure, and its leaching toxicity meets the requirements of relevant standards, which laid an excellent foundation for PG-based ecological restoration materials and filling materials, with low economic cost, simple process and strong feasibility. This will provide great convenience for the later mining and metallurgy.https://www.mdpi.com/1420-3049/27/2/462phosphogypsummodificationleaching toxicitysemi-drysolidification/stabilization |
| spellingShingle | Fenghui Wu Can Yang Guangfei Qu Liangliang Liu Bangjin Chen Shan Liu Junyan Li Yuanchuan Ren Yuyi Yang Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification Molecules phosphogypsum modification leaching toxicity semi-dry solidification/stabilization |
| title | Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification |
| title_full | Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification |
| title_fullStr | Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification |
| title_full_unstemmed | Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification |
| title_short | Study of Semi-Dry High Target Solidification/Stabilization of Harmful Impurities in Phosphogypsum by Modification |
| title_sort | study of semi dry high target solidification stabilization of harmful impurities in phosphogypsum by modification |
| topic | phosphogypsum modification leaching toxicity semi-dry solidification/stabilization |
| url | https://www.mdpi.com/1420-3049/27/2/462 |
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