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·Pollution of rivers is a serious topic that is frequently brought up by people from all walks of life all around the world including Malaysia
·Bayer red mud is a strong alkaline solid waste discharged during alumina production Due to large emissions and strong alkalinity red mud is now mostly dammed or buried which not only occupies huge land but also contaminates the surrounding ecosystem causing the risk of collapse and landslide In addition to its overall utilization in building
·Red mud is a kind of strong alkaline hazardous slag discharged from aluminum metallurgy industry In this study the water immersion with high temperature and high pressure was developed for the selective dealkalization from red mud by adding Mg based additives The removal efficiency of alkali could reach 92% by using 12% MgCl2 with 9 mL/g at 250 °C for 60
·Abstract In order to conserve natural resources and prevent waste generation effective utilization of industrial wastes and/or by products for beneficial engineering applications becomes inevitable In order to accomplish this extensive research studies exploring properties and new applications of waste materials in a sustainable and environmentally friendly manner
·This work aims to develop a modulation strategy for converting red mud RM into cementitious material based on elucidating the phase transformation of hydrogarnet The results show that cementitious minerals 2CaO·SiO2 C2S 12CaO·7Al2O3 C12A7 and 4CaO·Al2O3·Fe2O3 C4AF as well as the free iron minerals Fe and FeO are formed by
·Red mud RM is a by product of extracting of alumina from bauxite Red mud contains high quantities of alkali generating minerals and metal ions which can cause significant environmental damage Many valuable components such as rare earth elements Al and Fe in RM are difficult to be utilized owing to their particle size and alkalinity Thus developing an
·The increasing demand for rare earth elements REEs due to their widespread applications in high technology fields such as new material synthesis and aerospace has propelled rare earth mining and smelting activities [2] [22]; Yang et al 2013 Presently more than 70% of global medium and heavy rare earth resources are distributed in seven southern
·Heatwaves not only lead to an increase of temperature but are some of the causes and effects of air pollution Hotter stagnant air during a heat wave increases the concentration of particle pollutants Extreme heat wave events also have higher risks of large scale wildfires which in turn releases more carbon emissions smog and pollutants
·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
·In recent years environmental problems caused by the accumulation of red mud have become increasingly serious In order to understand the status of red mud recovery in recent years this article uses a comprehensive literature database to classify and statistically analyze red mud related publications from 2010 to 2019
·Red mud as a solid waste produced during the alumina production can cause severe eco environmental pollution and health risks to the resourcing of this type of solid waste is an effective way for the sustainable development
·Red mud is a strongly alkaline industrial solid waste generated by alumina extraction in the aluminum industry; its output volume varies with ore grade production process and technology level
·Gypsum addition to red mud leachate results in the precipitation of calcite both in experiments and in field samples recovered from rivers treated with gypsum after the October 2010 red mud spill
·The development of cheap and effective approach for utilizing red mud RM waste is a long and arduous task This work provided a technically and economically feasible route to utilize RM waste for the production of high valuable chemicals by use of the industrial wastes as cheap raw materials The Fe and Al elements were first leached from RM through
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
·In this work a collaborative strategy for the aluminum and iron industry based on red mud recycling through the hydrometallurgy method was proposed In this method Fe3 and Al3 were firstly separated from the red mud by using H2SO4 as a leaching agent which was by produced from the sintering process of an iron and steel industry Multiple influence factors
·Another environmental problem related to aluminum production is the formation and accumulation in mud lagoon of huge amounts of so called highly alkaline "red mud " which is a waste product of
·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
·A review of possible remedial applications of red mud in various environmental compartments reveals that red mud does not pose high toxicity to the environment making it suitable for the treatment of contaminated media and neutralization ofred mud is recommended for its safe disposal and secure application in any environmental media Red mud is a solid
·In Ajka Hungary the red mud slurry was collected directly in a containment structure which burst caused a major accident in October 2010 In the present work the environmental impact of toxic elements in red mud from Kidričevo and Ajka were evaluated by applying a sequential extraction procedure and speciation analysis
·Red mud has a very fine size d 50 < 10 µ and BET surface area 14 25 m 2 /gm Red mud has these adsorption characteristics and can be utilized for the adsorption of certain elements from waste effluents and flue gases This paper is an overview on the work carried out on global scale including India on red mud utilization in pollution control
·Many technologies have been proposed for the utilization of red mud such as valuable metals recovery from red mud including iron aluminium titanium and other trace metal ceramic production and catalysts for waste gas and liquid cleaning cleaning Liu and Naidu 2014 Borra et al 2015 Wang et al 2016 Kim et al 2018 However few of those
·The effectiveness of using red mud as the aluminum industry waste to fabricat a novel alumina magnetic hybrid AMH nanosorbent which can remove nitrate from contaminated water was evaluated in
·Bauxite residue is the industrial solid waste discharged from the production of alumina by bauxite which contains a certain amount of ferric oxide in a reddish brown color so it is also called red mud and is a typical non ferrous metallurgical solid waste Wang et al 2018; Xue et al 2022 The varieties of bauxite residue depend on the grade of the bauxite and
