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Related Experiment Video

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Ceramsite production from sediment in Beian River: characterization and parameter optimization.

Yong Jin1,2, Songyu Huang3, Qunhui Wang1,2

  • 1Department of Environmental Engineering, University of Science and Technology, Beijing 100083, People's Republic of China.

Royal Society Open Science
|October 11, 2019
PubMed
Summary

River sediment containing high levels of nitrogen, phosphorus, and organic matter can be transformed into ceramsite. This study optimized conditions for ceramsite production, offering a sustainable solution for sediment pollution control and resource recovery.

Keywords:
Beian Riverceramsiteorthogonal experimentriver sediment

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Area of Science:

  • Environmental Engineering
  • Materials Science
  • Waste Management

Background:

  • River sediments in Beian River, China, contain significant pollutants like total nitrogen (TN), total phosphorus (TP), and organic matter (OM).
  • High concentrations of these pollutants necessitate proper treatment for resource utilization and pollution control.

Purpose of the Study:

  • To investigate the feasibility of utilizing Beian River sediment for ceramsite production.
  • To determine the optimal conditions for ceramsite production from sediment using an orthogonal experimental design.

Main Methods:

  • Sediment from Beian River was used as a raw material for ceramsite production.
  • An orthogonal experiment (L16(4^5)) was employed to optimize parameters including sewage sludge ratio, binder ratio, pre-heating temperature, sintering temperature, and firing time.

Main Results:

  • Optimal conditions were identified as: 15% sewage sludge ratio, 5% binder ratio, 450°C pre-heating temperature, 1150°C sintering temperature, and 23 min firing time.
  • The produced ceramsite met the CJ/T 299-2008 standard.
  • Heavy metal leaching tests confirmed levels below China's industrial standard thresholds.

Conclusions:

  • Ceramsite production is a viable method for the resource utilization of Beian River sediment.
  • This process effectively addresses sediment pollution while recovering valuable materials.