Removal, conversion and utilization technologies of alkali components in bayer red mud DOI
Shanliang Ma, Xiaoming Liu, Zengqi Zhang

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 373, P. 123781 - 123781

Published: Dec. 21, 2024

Language: Английский

Investigation of the properties and microscopic mechanism of red mud-phosphogypsum-based composite cementitious materials DOI
Yongfa Wang, Peng Liu, Dewen Kong

et al.

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 111962 - 111962

Published: Jan. 1, 2025

Language: Английский

Citations

2
Simulation of red mud/phosphogypsum-based artificial soil engineering applications in vegetation restoration and ecological reconstruction DOI
Yong Liu,

Lishuai Zhang,

Binbin Xue

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175656 - 175656

Published: Aug. 22, 2024

Language: Английский

Citations

11
Electrolytic manganese residue and red mud co-treatment: Synthesizing zeolite X and adsorbing leaching solution from electrolytic manganese residue DOI

Wenlei Li,

Huixin Jin,

Hongyan Xie

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129795 - 129795

Published: Sept. 1, 2024

Language: Английский

Citations

8
Characteristics on modified complex of Red Mud and Phosphogypsum and its soil substrates utilization DOI Creative Commons
Bin Liu,

Zuyong Chen,

Fang Liu

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Abstract Red mud and phosphogypsum are by-products in the production process of aluminum manufacturing phosphorus chemical industry respectively. PO43−, F−and Cd2+ Na+ plasma red will leach into water soil after raining, which declines ecological environment quality. Therefore, it is necessary to research modification on phosphogypsum, technologies their substrates utilization. In this study, ferric chloride sodium silicate were used modify control effect mechanism modifiers relevant pollutants discussed. The study further explored optimal ratio complex its growth wheat grass through pot experiment. results showed that single reduced pH value from 10.76 8.51–10.05, improved crystal pore structure; while Na2SiO3 treatment increased 3.38 4.48–9.54, significantly PO43− (from 205.7 mg/L 28.9 mg/L) F−concentration (reduced 3.77 extraction. (pH, F− heavy metal content) produced (Spraying 1 mol/L FeCl3 15% mass 1.4 10% phosphogypsum) with a 7:3 all meet highest allowable concentration requirements comprehensive sewage discharge standard. experiment ryegrass planting such cultivated dry weight 18.82g plant height 21.63cm at 40 days, was comparable fresh (dry 21.63g 21.35 cm days). realized stable dealkalinization curing soluble can be as soil-based substrate suitable for forage growth. And optimizing even applied remediation.

Language: Английский

Citations

0
Characteristics of Fungal Communities in Red Mud/Phosphogypsum-Based Artificial Soils DOI Creative Commons

Yong Liu,

Zhi Yang,

Lishuai Zhang

et al.

Biology, Journal Year: 2025, Volume and Issue: 14(3), P. 285 - 285

Published: March 11, 2025

Red mud and phosphogypsum are two typical industrial by-products. The preparation of red mud/phosphogypsum-based artificial soils offers a promising novel solution to the efficient synergistic disposal them. Fungi, as key drivers, can promote continuous development ecological improvement soils. This study is first report characteristics fungal communities in three after one year incubation. preliminary formation (with relatively low diversity) resulted total 3 phyla, 81 genera, 144 operational taxonomic units (OTUs) Ascomycota was dominant phylum each soil (>99.5%), high-abundance genera included Unclassified_c_Sordariomycetes, Unclassified_o_Sordariales, Emericellopsis, Kernia, Unclassified_f_Nectriaceae, Ramophialophora, Schizothecium, Iodophanus. There were significant differences among compositions which affected material cycling, succession, maturation varying extents. According FUNGuild prediction communities, saprotrophic fungi (such undefined saprotroph, dung saprotroph–undefined saprotroph) played roles promoting degradation humification organic matter cycling carbon Fungal had strong correlations with many environmental factors pH, matter, available nitrogen, phosphorous, sucrase, urease, acid phosphatase, alkaline catalase), indicating interactions between not only conducive optimization structure but also promotes balanced homogeneous distribution various substances, gradual its functions. provides an important scientific basis for clarifying mechanisms mycogenesis during

Language: Английский

Citations

0
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
Phosphogypsum improves soil and benefits crop growth: An effective measure for utilizing solid waste resources DOI Creative Commons

Liu Gao,

Runhe Li,

Dejian Yang

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 7, 2025

The utilization rate of phosphogypsum (PG) is currently low, and prolonged storage poses environmental pollution. Therefore, there an urgent need to promote resource-efficient utilization. This study investigated the alterations in characteristics modified PG artificial soil (MPG-soil) their influence on buckwheat (Fagopyrum esculentum Moench) growth using hierarchical land reclamation technique (HLRT) integrated (ILRT). results demonstrated that MPG-soil reduced bulk density (3.8-6.9%), enhanced moisture content (up 22%), improved enzymatic activity. HLRT achieved superior phosphorus mineralization (7.53 U/g S-NP activity) increased yield by 130.6% over controls. Despite elevated salinity, MPG amendments restricted heavy metal accumulation grains (BCF < 0.3), though Pb levels exceeded national standards due background contamination. Nutrient dynamics revealed availability but organic matter, necessitating supplemental fertilization. Nemerow index confirmed all treatments as "Safe Clean", while principal component analysis highlighted HLRT's efficacy balancing structure fertility. Proline high-PG indicated adaptive stress responses. effectively contained migration, ensuring agricultural product safety. assessed potential for reclamation, provided guidelines its safe agriculture.

Language: Английский

Citations

0
Red mud amendments reduce cadmium mobility in paddy soil and limit cadmium accumulation in rice grains: A mechanistic investigation DOI Creative Commons

Jiali Yan,

Xuwei Li,

Jintao Li

et al.

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

Citations

0
Effect of temperature on properties of Ⅱ-anhydrite prepared by phosphogypsum with high-temperature fluidized calcination DOI
Heng Li, Jing Zhong, Hui Zhang

et al.

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107167 - 107167

Published: April 1, 2025

Language: Английский

Citations

0