Characteristics of Modified Complex of Red Mud and Phosphogypsum and Its Soil Substrate Utilization DOI Open Access
Benli Liu,

Zuyong Chen,

Fang Liu

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(4), P. 972 - 972

Published: March 25, 2025

The increasing generation of industrial solid wastes, such as red mud and phosphogypsum, poses significant environmental challenges due to their complex chemical compositions low utilization rates. This study aims develop an innovative composite material by combining RM PG, modified with ferric chloride (FeCl3) sodium silicate (Na2SiO3), address risks enhance potential for soil ecological remediation. modification mechanisms immobilization toxic ions were investigated through leaching behavior analysis advanced microscopic techniques, including BET XRD. Under the optimal ratio (RM:PG = 7:3), exhibited excellent performance, stable pH (8.03), electrical conductivity (4.89 mS/cm), significantly reduced concentrations phosphate (PO43−: 0.36 mg/L) fluoride (F−: 1.34 mg/L), achieving upgrade from Class II I slag. process increased specific surface area, optimized pore structure, enhanced activity structural stability. Pot experiments demonstrated that supported normal plant growth, leachate meeting Grade wastewater discharge standards. not only provides a sustainable approach but also offers valuable insights into development eco-friendly materials remediation restoration, benefiting both scientific community management practices.

Language: Английский

Evaluation of Leaching Characteristics of Heavy Metal Ions from Red Mud–Graphite Tailings DOI Creative Commons
Kangli Li, Xiaolei Lu, Congcong Jiang

et al.

Toxics, Journal Year: 2025, Volume and Issue: 13(3), P. 211 - 211

Published: March 14, 2025

The rapid growth of aluminum and graphite industries has generated substantial stockpiles red mud tailings, which pose environmental risks due to their high heavy metal content potential for soil water contamination. This study investigated the leaching behavior metals from these materials post-stabilization using cement a sulfonated oil-based ion curing agent, thereby evaluating suitability safe reuse. Semi-dynamic experiments were employed measure release, supplemented by kinetic modeling discern key mechanisms. findings indicated that concentrations in leachates consistently below regulatory standards, with dynamics influenced dual mechanisms: diffusion ions surface chemical reactions. A coefficient-based analysis further suggested low leachability indices all metals, confirming effective immobilization. These results suggest agent-stabilized mud–graphite tailing composites reduce possess characteristics favorable resource recovery, thus supporting sustainable use industrial applications.

Language: Английский

Citations

0
Characteristics of Modified Complex of Red Mud and Phosphogypsum and Its Soil Substrate Utilization DOI Open Access
Benli Liu,

Zuyong Chen,

Fang Liu

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(4), P. 972 - 972

Published: March 25, 2025

The increasing generation of industrial solid wastes, such as red mud and phosphogypsum, poses significant environmental challenges due to their complex chemical compositions low utilization rates. This study aims develop an innovative composite material by combining RM PG, modified with ferric chloride (FeCl3) sodium silicate (Na2SiO3), address risks enhance potential for soil ecological remediation. modification mechanisms immobilization toxic ions were investigated through leaching behavior analysis advanced microscopic techniques, including BET XRD. Under the optimal ratio (RM:PG = 7:3), exhibited excellent performance, stable pH (8.03), electrical conductivity (4.89 mS/cm), significantly reduced concentrations phosphate (PO43−: 0.36 mg/L) fluoride (F−: 1.34 mg/L), achieving upgrade from Class II I slag. process increased specific surface area, optimized pore structure, enhanced activity structural stability. Pot experiments demonstrated that supported normal plant growth, leachate meeting Grade wastewater discharge standards. not only provides a sustainable approach but also offers valuable insights into development eco-friendly materials remediation restoration, benefiting both scientific community management practices.

Language: Английский

Citations

0