Tracking the current situation and key paths of phosphogypsum harmlessness
Hao Zou1, Zhenshan Chen1, Jun Jiang1
1School of Metallurgy and Environment, Central South University, Changsha 410083, China; Research Center for Ecological Remediation of Mining & Metallurgical Sites, Central South University, Changsha 410083, China.
Abstract:
Phosphogypsum (PG) is a hazardous solid industrial waste generated by the phosphorus chemical industry. It contains a variety of harmful substances, including free acids, phosphorus, fluorine, heavy metals, organic matter, and radioactive elements. The global stockpile of PG continues to increase, posing significant risks such as soil acidification, water pollution, and ecological damage. As a result, the harmless treatment of PG has become a research hotspot in the fields of environmental science and materials science. However, systematic reviews on the harmless treatment of PG remain limited, which hinders a comprehensive understanding of the key technical requirements and development pathways for its safe disposal. This paper provides a comprehensive review of the technologies and recent advances in the harmless treatment of PG from several key perspectives: the formation processes and physicochemical properties of harmful substances in PG, their associated environmental hazards, the mechanisms of immobilization, current research progress, supporting policies, and the development challenges faced. Finally, it outlines prospective pathways for the large-scale utilization of PG. By identifying the current challenges and knowledge gaps, this review outlines the core technical issues that must be addressed to advance the research and application of effective solutions for the harmless treatment of PG. It aims to provide a solid theoretical foundation and practical reference for the safe, sustainable management and large-scale utilization of PG.
Related Concept Videos
Microbial Bioremediation of Uranium
The Phosphorus Cycle
Pharmaceutical Poisoning: Treatment Strategies
Pharmaceutical Poisoning: Potential Scenarios
Prevention of Further Absorption of Poison
Acid Mine Drainage


