Solidification/stabilization of red mud with natural radionuclides in granular blast furnace slag based geopolymers

Luo, Zhenmin; Hao, Yuhua; Mu, Yuandong; Tang, Changbo; Liu, Xiaohai

doi:10.1016/j.conbuildmat.2021.125916

Cited by 11 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[64c] The effective dose of RM in geopolymer applications was reported to be 40.81 wt.% where the geopolymer is used to solidify the radionuclides in the RM. [74] Additionally, the geopolymerization of RM reduced the radioactivity constants index to 1.2, which is lower than the threshold value. [75] On the other hand, the utilization of RM in ceramic tiles production at 40 wt.% (by the Method of Satisfied Chemical Compositions) reduced the radioactivity to be accepted for interior surface of civil buildings and exterior surface of buildings.…”

Section: R E V I E W T H E C H E M I C a L R E C O R Dmentioning

confidence: 93%

Characterization and Applications of Red Mud, an Aluminum Industry Waste Material, in the Construction and Building Industries, as well as Catalysis

Al-Fakih

Nor

Basha

et al. 2023

The Chemical Record

View full text Add to dashboard Cite

The disposal of red mud (RM), a waste material generated by the aluminum industry, remains a global environmental concern because of its high alkalinity and smaller particle size, which have the potential to pollute air, soil, and water. Recently, efforts have been made to develop a strategy for reusing industrial byproducts, such as RM, and turning waste into value‐added products. The use of RM as (i) a supplementary cementitious material for construction and building materials, such as cement, concrete, bricks, ceramics, and geopolymers, and (ii) a catalyst is discussed in this review. Furthermore, the physical, chemical, mineralogical, structural, and thermal properties of RM, as well as its environmental impact, are also discussed in this review. It is possible to conclude that using RM in catalysis, cement, and construction industries is the most efficient way to recycle this byproduct on a large scale. However, the low cementitious properties of RM can be attributed to a reduction in the fresh and mechanical properties of composites incorporating RM. On the other hand, 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 catalyst. The review provides basic information on the characterization of RM and its suitability in various applications, paving the way for more advanced research on the sustainable disposal of RM waste. Future research perspectives on the utilization of RM are also addressed.

show abstract

Section: R E V I E W T H E C H E M I C a L R E C O R Dmentioning

confidence: 93%

Characterization and Applications of Red Mud, an Aluminum Industry Waste Material, in the Construction and Building Industries, as well as Catalysis

Al-Fakih

Nor

Basha

et al. 2023

The Chemical Record

View full text Add to dashboard Cite

show abstract

“…Red mud (RM) is a strong alkaline solid waste produced in alumina production; it mainly contains alumina, iron oxide, sodium oxide, titanium dioxide and other components and varies in color from red to off-white due to the varying iron oxide content [1][2][3][4]. As of 2021, the world's red mud reserves exceeded four billion tons and continue to grow at a frantic rate of 175.5 million per year [5,6], resulting in increasing soil alkalinization problems and environmental damage from groundwater pollution.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mineral Phase Transformation Technology Followed by Magnetic Separation for Recovery of Iron Values from Red Mud

et al. 2022

View full text Add to dashboard Cite

Experiments were conducted to investigate the mineral phase transformation technology of high-iron red mud, effectively extracting valuable iron minerals and reducing the hazards associated with red mud stockpiling and storage. A magnetic concentrate with an iron grade of 55.84% and recovery of 93.75% could be obtained at a roasting temperature of 560 °C, roasting time of 15 min, CO concentration of 20% and total gas flow of 500 mL/min. A combination of XRD and SEM-EDS analysis was employed to evaluate the phase transformation during the roasting process. ToF-SIMS analysis was applied to assess the occurrence state of various elements during the roasting of red mud.

show abstract

Obtaining New Alkali-Activated Binders from Waste of Different Sources

Gómez-Casero

Pérez‐Villarejo

Eliche-Quesada

2023

Proceedings of the 2nd International Conference on Water Energy Food and Sustainability (ICoWEFS 2022)

View full text Add to dashboard Cite

Solidification/stabilization of red mud with natural radionuclides in granular blast furnace slag based geopolymers

Cited by 11 publications

References 34 publications

Characterization and Applications of Red Mud, an Aluminum Industry Waste Material, in the Construction and Building Industries, as well as Catalysis

Characterization and Applications of Red Mud, an Aluminum Industry Waste Material, in the Construction and Building Industries, as well as Catalysis

Investigation of Mineral Phase Transformation Technology Followed by Magnetic Separation for Recovery of Iron Values from Red Mud

Obtaining New Alkali-Activated Binders from Waste of Different Sources

Contact Info

Product

Resources

About