Comparative organic pollutants removal efficiency and life cycle assessment of pyrolysis and solvent elution for industrial waste salt recycling.

Managing industrial waste salt plays a vital role in environmental protection and resource utilization, with a focus on effective removal of organic pollutants and comprehensive life cycle assessment. This study focuses on waste salt produced by the pharmaceutical, pesticide, fluorochemical, and dyeing industries, assessing the efficiency of pyrolysis and solvent elution techniques in removing organic pollutants. Additionally, a life cycle assessment (LCA) was conducted to assess the environmental impacts associated with the two technologies.

Characterization of solidification for disposal of hazardous waste landfill leachate.

Hazardous waste landfill leachate (HWLL) with high concentrations of salt and pollutants has created a bottleneck at hazardous waste landfills. This study applied a cement-based curing method to the disposal of HWLL. The highest contaminant fixing rate was achieved by adjusting the composition and proportion of the curing base, the content of additives, and the liquid-solid (L/S) ratio of the leachate to the curing base.