The Sustainable Bauxite Residue Management Guidance document, explores and explains the lifecycle of bauxite residue and, through relevant case …

Bauxite residue (BR), also referred to as red mud, is an industrial waste resulting from the processing of bauxite to alumina using the Bayer process. The …

The work of Evans [] sets the scene.It presents efforts of years, while giving a perspective for the future. Indeed, in spite of over a century of effort looking for uses, over 1200 patents and hundreds of technically successful trials, less than 4 million tonnes of the 150 million tonnes of bauxite residue produced annually is used in a productive way.

After numerical validation, the model was used to simulate the moisture profile of bauxite residue under the climatic conditions of an alumina refinery site in Queensland, Australia, as well as ...

Bauxite residue (red mud) is a solid waste produced in the process of alumina extraction from bauxite. More than 70 million tons of bauxite residue is generated annually. ... (308 K), and adsorption time (40 min) were obtained. A pseudo-second-order kinetics model was employed to describe the adsorption process of scandium. …

Bauxite residues are a mass of industrial wastes derived from aluminum metallurgy. This work provided a simple pyrolysis method to magnetize the bauxite residue to serve as a magnetic adsorbent towards heavy metals removal. The X-ray diffraction patterns and Moss spectrum results confirmed the partial reduction of iron species …

Bauxite residue, a potential secondary source of CRM, can contain considerable amounts of strategically important metals depending on its geologic origin and processing [6, 7]. ... Both models were subsequently reduced to only contain potentially significant factors (p ≤ 0.05) and factors necessary to maintain model hierarchy using the ...

Therefore, it is necessary to identify geochemical models that can assess the behaviour of complex systems, such as bauxite residues. Though it cannot replace experiments altogether, geochemical modelling may be used to supplement field observations and laboratory experiments for the prediction of long-term behaviour of …

Rheology measurements are taken on three tailings gradation by varying solids concentration from 67.57 to 72.46% and moisture content from 38–48%. Classifying the flow behaviour of bauxite residue using Herschel–Bulkley model by inputting obtained results is also an objective of the study.

Yiannis Pontikes. 3071 Accesses. 2 Citations. 1 Altmetric. Explore all metrics. The management of bauxite residue, also known as red mud, 1 continues to be …

However, this Bayer manufacturing process produces bauxite residues, which are composed of iron oxide, titanium oxide, and insoluble alumina [3]. ... The kinetic model was applied to better evaluate the sorption behavior of phosphate by the two muds according to the reaction time (Fig. S3). The relationship constants ...

A schematic of the bauxite residue treatment process. Fe recovery was carried out by reductive roasting and magnetic separation. The mixture of dilute acid-washed residue and carbon black (C:O = 3.85) was roasted at 650 °C for 2.5h. The resultant residue was mixed with DI water in a beaker using a magnetic stirrer.

The safe disposal of bauxite residue (BR) poses significant economic challenges due to the large land area required, which increases the overall cost of alumina production. As a rough estimate, a 1-million-ton-per-year alumina factory needs 1,000,000 m 2 land every 5 years to accommodate the waste generated during the production …

Bauxite residue has received a substantial consideration in this respect. Sushil and Batra ... also stated that the Hg 0 capture process of KI-modified and KBr-modified red mud displayed a pseudo-second-order kinetic model. Nath and Sahoo employed bauxite residue to decontaminate gas with fluorine generated from the …

The Carbonation capacity of bauxite residue/brine mixtures was considered over the full range of reactant mixture combinations in 10% increments by volume. A bauxite residue/brine mixture of 90/10 by volume exhibited a CO 2 sequestration capacity of greater than 9.5 g/L when exposed to pure CO 2 at 20º C and 0.689 MPa (100 psig). …

Sell value. $50. Bauxite Residue is created by inputting Soil into a Trommel. It is necessary for the creation of Aluminium Ingot . Categories. Community content is available under CC-BY-SA unless otherwise noted.

10 billion tonnes by 2050. Bauxite residue can be a significant contributor to industrial symbiosis. International Aluminium Institute's dynamic material flow model indicates that, …

1. Introduction. Bauxite residue is a severe saline-alkalinity solid waste generated during the extraction of alumina (Ke et al., 2021).Generally, >5 billion tons of bauxite residue are stored globally, and approximately 1–2 tons of residue is generated for per 1 ton alumina production (Zhu et al., 2023).Consequently, the stockpiled bauxite …

The structural equation model (SEM) was used to model the covariance of the relationship between microbial diversity, plant growth traits, and the physicochemical properties of the bauxite residue using AMOS 24.0, with …

In our study, E. dahuricus showed an outstanding growth performance in the residues treated with FS and organic materials, thus, to explore the response relationships between plant traits and biogeochemical properties of bauxite residue, the mantel-test analysis and structural equation model (SEM) were developed to quantitatively analyze …

Fei Lyu a b., Yuehua Hu a b., Li Wang a b., Wei Sun a b. Show more. Add to Mendeley. https://doi/10.1016/j.jhazmat.2020.123671 Get rights and content. …

The residue generated is usually highly alkaline with pH about 10.5–13 [ 1, 2 ]. Bauxite ore primarily contains aluminium hydroxides (gibbsite) and oxy hydroxides …

A mineral processing waste suitable for carbonation is bauxite residue, the main by-product produced by alumina plants. This is a highly alkaline (pH~13) and hazardous waste product whose disposal results in major environmental issues for the alumina industry and carbonation allows to be stored more safely [2].

Bauxite residue is the solid residue generated in the Bayer process for aluminum production. About 0.7–2 tons of bauxite residue is generated for each ton of …

The process of chemical looping conversion of CO 2 based on aluminum industry waste bauxite residue (BR) as oxygen carrier (OC) was proposed, and the thermodynamic behavior and kinetic characteristics were explored. The isothermal reaction performance and cycle stability of chemical looping conversion of CO 2 by three reduced …

Ecological restoration and environmental risk control on bauxite residue disposal areas have received persistent attention worldwide as it concerns the sustainable development of global alumina enterprises. Currently, microbially driven ecological restoration has been regarded as a promising way in consideration of its cost …

In 2013, 259 Mt of bauxite was mined globally, the largest production being from Australia [1] (Fig. 1).For every metric tonne of aluminum metal produced from bauxite, 2 t of bauxite residue (also referred to as red mud or alumina refining tailings) are generated [2].After more than 110 years of commercial aluminum production, bauxite …

The kinetics of CIP removal was evaluated by fitting the CIP removal datasets (section 2.2) to three kinetics models: the first-order kinetics model, the second-order kinetics model, ... Bauxite residue was evaluated for its potential in the removal of ciprofloxacin as an emerging contaminant, which was found to be positively correlated to …

Bauxite residue (BR) is a by-product from the aluminum industry, generated during the Bayer process to obtain alumina. It has valuable iron and alumina contents, with soluble ions that can interact with the cement compounds, which could make BR a new source of supplementary cementitious material. ... TAM Air model, TA Instruments, with …

The long-term storage of bauxite residue (red mud) is harmful to the environment and the tailing ponds also cover large areas. At the moment there is no large-scale utilization of bauxite residue. However, some bauxite residues contain considerable concentrations of rare-earth elements (REEs) and the recovery of these REEs together …