The Impurity Removal and Comprehensive Utilization of Phosphogypsum: A Review
Qingjun Guan1,2, Zhuang Wang1, Fujia Zhou1
1School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
Materials (Basel, Switzerland)
|May 11, 2024
Summary
Phosphogypsum (PG) accumulation causes land waste and pollution. This review explores efficient impurity removal and high-value product strategies for sustainable PG utilization and phosphorus chemical industry development.
Area of Science:
- Environmental Science
- Chemical Engineering
- Materials Science
Background:
- Phosphogypsum (PG) is a major byproduct of phosphoric acid production.
- Its complex impurities limit utilization and cause land waste and environmental pollution.
- Sustainable management of PG is crucial for the phosphorus chemical industry.
Purpose of the Study:
- To review existing technologies for PG impurity removal and utilization.
- To identify efficient, low-energy methods for processing PG.
- To explore pathways for creating high-value PG products and broadening applications.
Main Methods:
- Comprehensive literature review of PG impurity removal techniques.
- Analysis of current PG utilization strategies and their limitations.
- Evaluation of emerging technologies for PG resource recovery.
Main Results:
- Existing PG impurity removal methods have varying advantages and disadvantages.
- Low utilization rates and significant accumulation remain key challenges.
- Developing high-value-added PG products is essential for sustainable utilization.
Conclusions:
- Efficient impurity removal and resource recovery are critical for PG sustainability.
- Further research into novel processing technologies is needed.
- Broadening PG applications will support the phosphorus chemical industry's sustainable development.
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