(PDF) Experimental Research on the Bearing …

In this study, the mechanical properties of composite foundations in red mud ground were examined, and the reinforcement effect of composite foundation dams with mixed geopolymer piles of fly ash ...

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Characterization and source apportionment of heavy metal …

This study systematically reveals the current status and sources of heavy metal pollution in a red mud dump and surrounding soil in a region of Shanxi Province. By …

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Comprehensive utilization status of red mud in China: A critical …

During alkaline refining of alumina, an alkaline industrial waste residue called red mud is produced. Given its complex composition, large specific surface area, and strong …

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Red Mud from the Aluminium Industry: Production, …

Similarly, in January 2018, another disaster occurred in Belem, Brazil. A powerful rain caused red mud storage overflows, contaminating soil and threatening drinking water by high levels of lead and aluminium [55]. The red mud also can be converted into a dry cake as pressure filters reduce its moisture content.

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Investigations on performance of alkali activated mortar mixes

A new kind of alkali–slag–red mud cementitious (ASRC) material, with both high early and ultimate strength and excellent resistance against chemical attacks, has been developed by the ...

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Groundwater Pollution Model and Diffusion Law in Ordovician …

Abstract. Read online. Red mud is a strong alkaline solid waste pollutant produced in the process of aluminum smelting, which causes great pollution to the regional groundwater environment due to its high content of fluorine and aluminum and high concentration of strong alkali.

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The large-scale sustainable utilization status of bauxite residue …

Red mud (abbreviated as RM) is a solid waste formed during the alumina refining process from bauxite. Every year, over 200 million tons of RM are discharged worldwide. …

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Characterization and Applications of Red Mud, an Aluminum …

Characterization and Applications of Red Mud, an Aluminum Industry Waste Material, in the Construction and Building Industries, as well as Catalysis. Amin Al-Fakih, ... RM can be used as an efficient active catalyst to synthesize organic molecules and reduce air pollution, which not only makes use of solid waste but also lowers the price of the ...

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Groundwater Pollution Model and Diffusion Law in …

Abstract: Red mud is a strong alkaline solid waste pollutant produced in the process of aluminum smelting, which causes great pollution to the regional groundwater environment due to its high

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Red mud used as roadbed material: Revealing the long-term …

The utilization of red mud as a partial substitute for traditional materials in roadbed construction presents a promising solution for the large-scale consumption of this waste …

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Understanding red mud pollution: causes, impacts, and mitigation

Red mud pollution, is bauxite residue. It is a toxic byproduct left over when alumina (aluminium oxide) is extracted from its ore, bauxite, in order to produce aluminium metal in the …

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Experimental Investigation of Creep Behavior of Bayer Red Mud …

Long-term stability and safety of red mud disposal field is very important for the local residents' life, which necessitates the knowledge of its creep behavior. Through the improved triaxial creep apparatus, a series of triaxial drained creep tests were conducted. The results indicate that the creep behavior of BRM is significant with confining and deviatoric stresses …

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Environmental impact of toxic elements in red mud studied by

Aluminum (Al) is mostly produced from bauxite ore, which contains up to 70% of Al(2)O(3) (alumina). Before alumina is refined to aluminum metal, it is purified by hot alkaline extraction. As a waste by-product red mud is formed. Due to its high alkalinity and large quantities, it represents a severe …

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Preparation and property studies of ferric sulfoaluminate

The Bayer red mud (RM) and phosphogypsum (PG) accumulation have caused significant environmental contamination. However, practical and effective resource utilization technologies are still lacking currently. This work aims to develop ferric sulfoaluminate cement (FSAC) employing low-cost materials including Bayer red mud, phosphogypsum, and other …

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(PDF) Groundwater Pollution Model and Diffusion Law in …

Red mud is a strong alkaline solid waste pollutant produced in the process of aluminum smelting, which causes great pollution to the regional groundwater environment due to its high content of ...

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Transferring red mud to efficient adsorbent for the adsorption and

Red mud is a by-product of the aluminum manufacturing industry, with approximately 1–2 tons generated for every ton of Al 2 O 3 produced [1].The annual increase in red mud is 175.5 million tons [2].Additionally, as high-quality bauxite continues to be exploited, the use of lower-grade bauxites in aluminum production has led to a rise in the yearly production …

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Environmental Pollution Caused By Factories

Factory pollution is often thought of as mostly smokestack emissions but can include acidifying rain, chemical spills, greenhouse gases and toxic waste disposal. Industry pollutes water and land as well. Once pollutants enter the atmosphere or the water system, they can spread beyond the factory.

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Red mud is piling up. Can scientists figure out what to do with it?

The company estimates that the red mud from a single aluminum refinery can lock up 70,000 tons of CO 2 per year, equivalent to taking more than 15,000 cars off the road. Yet …

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Environmental and Radiation Concerns of Red Mud

Red mud, also known as bauxite residue, is an insoluble byproduct generated from the extraction of alumina from bauxite during the Bayer process (Fig. 1), a crucial step in the manufacturing of aluminum. Highly alkaline and difficult to deal with, red mud presents a significant environmental hazard, especially when spilled out of the clay-lined ...

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Red mud-based catalysts for the catalytic removal of typical air

Red mud, as a solid waste produced during the alumina production, can cause severe eco-environmental pollution and health risks to human.Therefore, the resourcing of this type of solid waste is an effective way for the sustainable development.

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Disposal – Red Mud Project

D. Luo and J. Liu, "New process of utilizing red mud from aluminum treating plant to produce high quality direct-reduction iron", China Mining 11 (2002), pp. 50–53 (in Chinese) J. Hyuna, S. Endoha, K. Masudaa, H. Shinb, H. Ohyaa, "Reduction of chlorine in bauxite residue by fine particle separation", Int. J. Miner.

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Characterization and source apportionment of heavy metal …

In China, areas near red mud deposits from the alu-minum industry show severe heavy metal contami-nation. This study examines agricultural soil near a red mud site in Shanxi Province, analyzing Cd, Cr, Hg, Ni, Pb, As, Cu, and Zn levels and distribu-tion. Geostatistical methods and GIS are utilized to assess heavy metal pollution using the ...

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Production – Red Mud Project

Red Mud is produced during the Bayer Process. With this process, we can extract the aluminum (oxy)hydroxides from bauxites and get alumina, which eventually can be smelted and give aluminum. Bayer Process . In 1888, …

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Environmental and Radiation Concerns of Red Mud

Red mud, also known as bauxite residue, is an insoluble byproduct generated from the extraction of alumina from bauxite during the Bayer process (Fig. 1), a crucial step in the manufacturing …

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Environmental Safety Analysis of Red Mud-Based Cemented …

1. Introduction. As the second most important metal after steel, aluminum and its alloys are widely used in construction, transportation, electrical appliances, machinery, and other industries due to their excellent properties [].At present, 95% of the world's aluminum companies use the Bayer process to treat bauxite ore in order to produce alumina and then to obtain aluminum metal …

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Using imaging spectroscopy to map red mud dust waste: The …

The principal source of aluminum is bauxite which bauxite residue and the deposition and drying process (smelting and refining facilities), i.e. red mud, result in a range of different materials that have the potential to spread pollutant dust under windy conditions (Varnavas & Achilleopoulos, 1995).The refinery "muds" (both red and brown mud) dry to a …

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The large-scale sustainable utilization status of bauxite residue …

Red mud (abbreviated as RM) is a solid waste formed during the alumina refining process from bauxite. Every year, over 200 million tons of RM are discharged worldwide. China is a large producer of ...

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A Novel Method of Synthesizing Polymeric Aluminum Ferric …

3.8. Properties of the Red Mud-Based Ceramsite. Preparation of high-strength ceramsite provided a novel method for efficient utilization of ARM. Not only can it reduce secondary pollution caused by ARM emissions, it can also be used as an adsorption material. Mechanical strength is a key indicator that affects its popularization and application ...

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Collembolan response to red mud pollution in Western Hungary

On October 2010, in Western Hungary, one of the dykes of a red mud reservoir of an aluminium processing factory breached and more than 1.3 million m 3 of toxic sludge broke free, flooding the surrounding area (Szépvölgyi, 2011).This event destroyed nearly 1000 hectares of land, including nearby rivers, where practically all aquatic life was destroyed (Mayes et al., …

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Spatial Characteristics and Risk Assessment of Heavy Metals

The purpose of this study was to investigate the distribution pattern, pollution status and potential ecological risk of Cr, Co, Ni, Cu, As, Cd, Sb, and Pb in soils and dominant plants around an abandoned red mud (RM) slag yard in Southwestern China. Soils exhibited representative enrichment and combination characteristics of these metals compared to the …

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