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The Generation Process, Impurity Removal and High-Value Utilization of Phosphogypsum Material
1Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Nanomaterials (Basel, Switzerland)
|September 9, 2022
Summary
Phosphogypsum, a solid waste from fertilizer production, requires purification and utilization for economic and environmental benefits. This study reviews methods for treating and repurposing phosphogypsum, addressing sustainability challenges.
Area of Science:
- Environmental Science
- Materials Science
- Chemical Engineering
Background:
- Phosphogypsum is a major solid waste byproduct of phosphate fertilizer production.
- Increasing food demand drives higher fertilizer output, leading to escalating phosphogypsum storage in China.
- Effective management of phosphogypsum is crucial for economic development and environmental protection.
Purpose of the Study:
- To summarize the generation process of phosphogypsum.
- To review impurity removal techniques (physical, chemical, thermal) and high-value utilization pathways (e.g., nanometer calcium sulfate whisker, nanometer calcium carbonate).
- To identify current challenges and future research directions for sustainable phosphogypsum management.
Main Methods:
- Literature review of phosphogypsum generation and properties.
- Analysis of various impurity removal strategies.
- Examination of high-value product development from phosphogypsum.
Main Results:
- Detailed overview of phosphogypsum generation and its environmental impact.
- Comprehensive summary of physical, chemical, and thermal methods for impurity removal.
- Exploration of applications in producing nanometer calcium sulfate whisker and nanometer calcium carbonate.
Conclusions:
- Addressing phosphogypsum waste is vital for sustainable development in China.
- Further research is needed to overcome challenges in purification and high-value utilization.
- This review provides critical insights for advancing phosphogypsum management and application.
Keywords:
Nano-CaCO3Nano-calcium sulfate whiskergeneration processhigh-value utilizationimpurity removalphosphogypsum materialMore Related Videos
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