Electrolytic manganese residue-based cement for manganese ore pit backfilling: Performance and mechanism

Lan, Jirong; Sun, Yan; Hong, Tian; Zhan, Wei; Du, Yunhui; Ye, Hengpeng; Du, Dongyun; Zhang, Tian C.; Hou, Haobo

doi:10.1016/j.jhazmat.2020.124941

Cited by 41 publications

(4 citation statements)

References 28 publications

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“…Manganese, one of the most strategic metals in the world, is always in high demand. 1,2 China is one of the largest countries of production, consumption, and export for electrolytic metal manganese. 1,3 However, manganese residue (MR), as the most contributing pollutant during the manganese production process, is not widely managed.…”

Section: Introductionmentioning

confidence: 99%

“…Manganese, one of the most strategic metals in the world, is always in high demand. , China is one of the largest countries of production, consumption, and export for electrolytic metal manganese. , However, manganese residue (MR), as the most contributing pollutant during the manganese production process, is not widely managed . Currently, the MR in China is mainly exposed in the open, which could cause huge pressure on the storage space and seriously endanger the ecological environment around the yard .…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Recovery of NH₃–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Feng

Wang

et al. 2023

ACS EST Water

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The problem of high concentration of NH3–N and heavy metals in manganese residue leachate (MRL) needs to be solved urgently as it can harm the surrounding soil, water bodies, and even the ecological system. In this study, a novel electrodialysis system with a self-growing titanium dioxide nanowire (TiO2 NW) electrode is proposed to recover NH3–N and remove heavy metals from MRL. Plant growth experiments and ecotoxicity studies are used to evaluate the ecological risks of the reuse of recovered NH3–N. In the electrodialysis system with a proton membrane to separate the two chambers, 87%–97% removal of heavy metals and 95% recovery of NH3–N from MRL can be achieved. The obtained recovery solution from the cathode chamber can greatly promote the plant growth. The ecotoxicity experiment results further reveal that the recovered NH3–N can optimize the soil microbial community structure by promoting the reproduction of the genus Bacillus and thus improve soil fertility. This work can provide a new perspective on the harmless disposal and resource recovery of MRL.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simultaneous Recovery of NH₃–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Feng

Wang

et al. 2023

ACS EST Water

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“…Gel materials prepared by adding cement, lime, and other materials to EMR can absorb soluble harmful substances in EMR, with a compressive strength of 18.85 MPa, and the stability efficiency of NH 4+ and Mn 2+ can achieve more than 95% 12 . Adding waste glass, dolomite and kaolin to EMR and using sawdust and toner as a foaming agent can be used for firing porous ceramics 13–16 . The color of EMR glass–ceramics can be changed by changing the content of Mn 2+ by changing the content of manganese slag, which also plays a certain role in Mn solidification 17,18 .…”

Section: Introductionmentioning

confidence: 99%

“…12 Adding waste glass, dolomite and kaolin to EMR and using sawdust and toner as a foaming agent can be used for firing porous ceramics. [13][14][15][16] The color of EMR glass-ceramics can be changed by changing the content of Mn 2+ by changing the content of manganese slag, which also plays a certain role in Mn solidification. 17,18 However, the previous studies have the disadvantages of high preparation cost and low value utilization.…”

Section: Introductionmentioning

confidence: 99%

Effects of electrolytic manganese residue (EMR) to co‐sintering mechanism of ceramic aggregate

Dongdong

et al. 2022

Int J Applied Ceramic Tech

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The influences of co-sintering temperature on the physical properties of EMR (electrolytic manganese residue) ceramic aggregate were investigated over the gradient of co-sintering by EMR, CFA (coal fly ash), and P (perlite) that were used as raw materials. Seven EMR samples were prepared to sinter at different temperatures that were decided by the data of a thermal mass spectrometer, and four ceramic aggregate embryos were sintered at 1120, 1140, 1160, and 1180 • C. The mechanisms of co-sintering temperature action on performance were determined by means of X-ray diffraction and scanning electron microscopy with energy-dispersive X-ray spectroscopy. The optimal temperature of 1160 • C and the temperature increment lead to an enhancement of cylinder compressive strength and a damping of 1-h water absorption, softening coefficient, and grain shape coefficient was discovered. Gypsum of EMR dissolved and exhausted gas during co-sintering resulted in CaO. The crystalline transformation of wollastonite and gehlenite produced anorthite, which boosts the strength of aggregate and the content of anorthite, was proportional to the co-sintering temperature and the pressure strength of cylinder. The liquid phase of "overfiring"-coated crystal contributed to the further improvement of strength, but the aggregate sphere deformation generated a reduction of comprehensive performance. The formation of bustamite calcian in co-sintered ceramic aggregate realized the solidification of Mn, and the solidification rate of leaching toxicity test was 99.92%, and the absence of radioactivity was demonstrated.

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A Research Progress on Stabilization/Solidification of Electrolytic Manganese Residue

Liu

et al. 2023

Environmental Science and Engineering

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Electrolytic manganese residue-based cement for manganese ore pit backfilling: Performance and mechanism

Cited by 41 publications

References 28 publications

Simultaneous Recovery of NH₃–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Simultaneous Recovery of NH₃–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Effects of electrolytic manganese residue (EMR) to co‐sintering mechanism of ceramic aggregate

A Research Progress on Stabilization/Solidification of Electrolytic Manganese Residue

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Electrolytic manganese residue-based cement for manganese ore pit backfilling: Performance and mechanism

Cited by 41 publications

References 28 publications

Simultaneous Recovery of NH3–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Simultaneous Recovery of NH3–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Effects of electrolytic manganese residue (EMR) to co‐sintering mechanism of ceramic aggregate

A Research Progress on Stabilization/Solidification of Electrolytic Manganese Residue

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Product

Resources

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Simultaneous Recovery of NH₃–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System

Simultaneous Recovery of NH₃–N and Removal of Heavy Metals from Manganese Residue Leachate Using an Electrodialysis System