EXPLORING TREASURE IN FLY ASH: THE STATUS QUO AND SUSTAINABLE DEVELOPMENT PATH OF RARE EARTH ELEMENT RECOVERY TECHNOLOGY IN FLY ASH

HE Miao; ZHANG Zhenyu; CHEN Liudong; TANG Jiayi; CHEN Yijing; YANG Zhendong

doi:10.13205/j.hjgc.202410015

Volume 42 Issue 10

Oct. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(10): 121-131

HE Miao, ZHANG Zhenyu, CHEN Liudong, TANG Jiayi, CHEN Yijing, YANG Zhendong. EXPLORING TREASURE IN FLY ASH: THE STATUS QUO AND SUSTAINABLE DEVELOPMENT PATH OF RARE EARTH ELEMENT RECOVERY TECHNOLOGY IN FLY ASH[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 121-131. doi: 10.13205/j.hjgc.202410015

Citation:

HE Miao, ZHANG Zhenyu, CHEN Liudong, TANG Jiayi, CHEN Yijing, YANG Zhendong. EXPLORING TREASURE IN FLY ASH: THE STATUS QUO AND SUSTAINABLE DEVELOPMENT PATH OF RARE EARTH ELEMENT RECOVERY TECHNOLOGY IN FLY ASH[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 121-131. doi: 10.13205/j.hjgc.202410015

Citation:

HE Miao, ZHANG Zhenyu, CHEN Liudong, TANG Jiayi, CHEN Yijing, YANG Zhendong. EXPLORING TREASURE IN FLY ASH: THE STATUS QUO AND SUSTAINABLE DEVELOPMENT PATH OF RARE EARTH ELEMENT RECOVERY TECHNOLOGY IN FLY ASH[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(10): 121-131. doi: 10.13205/j.hjgc.202410015

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EXPLORING TREASURE IN FLY ASH: THE STATUS QUO AND SUSTAINABLE DEVELOPMENT PATH OF RARE EARTH ELEMENT RECOVERY TECHNOLOGY IN FLY ASH

doi: 10.13205/j.hjgc.202410015

1. School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China;
2. Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion and Utilization Technology, Chengdu 610106, China

Received Date: 2023-12-10
Available Online: 2024-11-30

Abstract

Abstract

The output of fly ash is increasing year by year, resulting in waste of resources and environmental health hazards. With the adjustment of the industrialization structure, the huge storage of fly ash has brought a series of pressures and challenges. At present, the extraction of rare earth elements from fly ash to achieve high value-added recycling has become an important solution to solve the problem of fly ash. In this paper, the utilization status and existing extraction methods of rare earth elements in fly ash are reviewed, and the existing technical processes are systematically summarized and discussed, to provide a reference for the resource utilization of rare earth elements in fly ash. In this paper, it is found that the traditional methods of recovering rare earth elements from fly ash have high recovery rates, but the cost and secondary pollution risk is high. New technologies such as biological methods have lower energy consumption and are environmentally friendly, which are more promising than traditional methods, but the technology is immature, and there are problems such as long cycles, low efficiency, and difficult separation of the products. Therefore, the future development direction should focus on the cost reduction and efficiency increase of traditional methods and the process optimization of new methods. This paper can provide reference for fly ash resource utilization, to form an environmentally friendly, economical, and efficient fly ash recovery strategy, practice the reduction, reuse and resource utilization of circular economy, and help the sustainable development of China’s mining industry.
- coal fly ash,
- rare earth elements,
- bioleaching,
- resource utilization,
- metal recovery

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References(90)

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