Kinetics of Copper Ion Leaching from Cement-Solidified Body of Blast Furnace Slag Adsorbing Copper Ion

Abstract:

Blast furnace slag has good adsorption performance and can be used to adsorb heavy metal ions in waste liquid. It’s worth studying whether the blast furnace slag absorbing heavy metal ions will pose a potential threat to the environment during the process when used in cement-based materials.This paper has studied the leaching amount of copper ions in the blast furnace slag-cement system was analyzed, and analyzed the leaching kinetics of copper ions. The results showed that the leaching amount of copper ions in the blast furnace slag-cement system that adsorbed copper ions basically met the national standard, and the solidified body age was 28 days,blast furnace slag content 30% is the smallest condition for the amount of copper ion leaching.The leaching model of copper ions in the blast furnace slag-cement system is the Elovich equation, which is a heterogeneous diffusion process. The longer the curing age is the slower the leaching process is completed and do not cause environmental pollution during long-term use.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 1036-1042
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.1036
• Online since: June 2021
• Authors: Ya Li Wang*, Zi Mo Li, Ning Yang, Qi Wei, Li Wei Hao
• Keywords: Blast Furnace Slag, Heavy Metal Adsorption, Leaching Kinetics, Solidification Effect

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