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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2024, Vol. 43 ›› Issue (8): 2912-2923.

• Solid Waste and Eco-Materials • Previous Articles     Next Articles

Process, Heavy Metal Transformation Behavior of Typical Solid Waste-Based Sintering Ceramsite and Its Application Status Analysis

KE Guopeng1, XU Hao2, YANG Ruzhu3, CHEN Zhibin1, DONG Shuyu3, ZHUANG Guanzheng1, ZENG Wu3, LI Yaohuang3, LIU Jingyong1, ZHONG Sheng1, YANG Zuoyi1, LI Lei1   

  1. 1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    2. PowerChina Eco-Environmental Group Co., Ltd., Shenzhen 518102, China;
    3. GZEPI Environmental Service Co., Ltd., Guangzhou 510640, China
  • Received:2023-12-26 Revised:2024-04-10 Online:2024-08-15 Published:2024-08-12

Abstract: At present, there are still a lot of solid wastes that can’t be properly treated, and using solid wastes to sinter ceramsite not only conforms to the concept of sustainable development, but also can turn waste into treasure, which is a feasible way of resource utilization. Firstly, the differences of three typical processes for sintering ceramsite from solid waste and some key processes in the sintering process were expounded. And then, the solidification and volatilization processes of seven heavy metals Cr, Zn, Cu, Cd, Ni, Pb and As in the product ceramsite during the sintering process of the above solid waste were analyzed, and six factors that may affect this process were summarized. Finally, the research and application status of ceramsite products in four main fields, such as concrete, water treatment, sound absorption materials and ceramsite proppants, and other emerging directions were summarized. Besides, some problems and prospects in the current migration and solidification of ceramsite heavy metals and the research and application of ceramsite were put forward, which can provide reference for the prevention and control of heavy metal pollution in the process of sintering ceramsite from solid waste and the subsequent use of the ceramsite products.

Key words: ceramsite, solid waste, calcine, heavy metal transformation, heavy metal solidification

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