Reductive acid leaching of manganese dioxide with glucose: Identification of oxidation derivatives of glucose

Furlani, G.; Pagnanelli, Francesca; Toro, Luigi

doi:10.1016/j.hydromet.2005.12.008

Cited by 74 publications

(23 citation statements)

References 21 publications

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“…Effects of temperature, ore composition, porosity and size are the prime factor in manganese ore reduction [1,3,4,6,7,[11][12][13][14][15][16]. The effect of gas atmosphere on the carbothermal reduction of manganese ore has been treated as less important factor.…”

Section: Effect Of Variablesmentioning

confidence: 99%

“…MnO 2 is stable in acidic or alkaline oxidizing conditions, this favours the reduction process [4][5][6]. At present, the main reduction technology is reduction roasting using coal as reductant and fuel in the pyrolusite treatment industry [7]. The reason behind the diminishment of traditional technologies are pollution problems and greenhouse effect [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Overview of Manganese Recovery by Hydro and Pyro-Metallurgical Routes

Dwivedi

Randhawa

Saroj

et al. 2016

J. Inst. Eng. India Ser. D

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This review comprises of information about the recovery of manganese through leaching and carbothermic reduction routes. In industrial processes, various critical parameters such as ore size, temperature, pressure, gas atmosphere and ore composition etc. affect the reduction or recovery of Mn from ores. Authors have tried to bring those critical parameters in this review which is currently being considered as important industrial parameters for Mn ore processing. This paper deals with both pyro-metallurgical and hydro-metallurgical routes for Mn ore reduction and gives brief summary about the critical parameters.

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Section: Effect Of Variablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Overview of Manganese Recovery by Hydro and Pyro-Metallurgical Routes

Dwivedi

Randhawa

Saroj

et al. 2016

J. Inst. Eng. India Ser. D

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“…Likewise in kinetics studies, Furlani et al . determined different kinetic models for the dissolution kinetics of manganese from manganiferous ore by glucose . Yi‐ju et al .…”

Section: Introductionmentioning

confidence: 99%

“…According to Cheng et al [8] the pyrolusite ore was reduced by biomass cornstalk roasting and then sulfuric acid-leached with 90.2% recovery of manganese. Likewise in kinetics studies, Furlani et al determined different kinetic models for the dissolution kinetics of manganese from manganiferous ore by glucose [9]. Yi-ju et al [10] showed that the leaching of pyrolusite by macromolecular melanoidins was controlled by diffusion through the insoluble layer of the associated minerals and reported an activation energy of 56.2 kJ/mol.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behavior of Manganese Oxide Ores Using Coke Wastewater in Sulfuric Acid Solution

Kang

Feng

et al. 2019

Env Prog and Sustain Energy

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The coke wastewater reductive leaching of pyrolusite ore in sulfuric acid solution was studied. This study was performed in two stages. First, the influence of tractable and refractory pollutants of coke wastewater on manganese leaching was determined. It was shown that the leaching efficiency of manganese is very sensitive to the decomposition of intractable pollutants. With the decrease of 1.85 g/L CODcr value of those contaminants, the extraction ratio of manganese increased more than 16% and exceeded 97.3%. Second, the corrosion behavior of pyrolusite ore in simulative wastewater solution was investigated using cyclic voltammograms, polarization curves, and Mott–Schottky curves. The reduction of manganese oxide ore by recalcitrant organic compounds involves two courses—the inducing conversion of manganese oxide to MnO·OH intermediate with hydrogen and free electron, which is from the oxidation of easily oxidized substances and the oxidation of persistent organic matter by this derivative. As a consequence, the latter process leads to the increment in manganese extraction efficiency. Coke wastewater is a promising reducing agent for MnO2. Likewise, it could be clarified and recycling. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13039, 2019

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“…This suggested that there may be impacts of the tailings matrix (rich in minerals) on the recovery of added soluble OC in the form of sucrose through the loss as CO2 during the acid pretreatment phase. Other studies found that water-soluble OC (such as sucrose) would be quickly oxidised and lost as CO2 by chloride and co-formed chlorine when concentrated HCl interacted with manganese dioxide (MnO2) at elevated temperature on a hot plate Furlani et al, 2006). However, possible reasons were not examined in this study.…”

Section: A31 Inorganic Carbon Quantification Recoverymentioning

confidence: 75%

Rehabilitation of organic carbon and microbial community structure and functions in Cu-Pb-Zn mine tailings for in situ engineering technosols

You¹

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Base metal mine tailings phytostabilisation has been severely hindered by the lack of growth media (soil and inert overburden), and associated hydrogeochemical instability, and phytotoxicity in the tailings. A new paradigm of in situ engineered pedogenesis of tailings into functional technosols has been proposed as a cost-effective and sustainable solution.This project aimed to understand critical factors and processes driving soil formation towards functional technosols in Cu-Pb-Zn tailings, which may be manipulated and stimulated by ecological engineering inputs (e.g., organic amendments, microbial inoculum, and pioneer plants). further accelerated technosols formation in the amended tailings, significantly stimulating OC stabilisation, microbial biomass and functions. While the amended tailings were far from reaching the desired hydrogeochemical stability, the pioneer native plant species were proven to be critical to the colonisation of heterotrophic bacteria and associated biogeochemical processes.Organic matter properties (e.g., labile OC, C: N ratio) induced biogeochemical changes in the tailings with different directions. In a 6-month microcosm experiment, the weathered and neutral Cu-Pb-Zn tailings were amended with plant litter (Acacia chisolmii) and biochar. Topsoil underneath native plant communities rich in microbial inoculums may be used to rapidly prime microbial diversity in the amended tailings. In an 8-week microcosm experiment, the weathered and neutral Cu-Pb-Zn tailings were inoculated with native soils, which had been amended with sugarcane as the base treatment. The colonisation of heterotrophic bacteria and fungi were observed in the tailings-soil mix, strongly linkedto the microbial biomass and functions. Microbial biomass and enzymatic activities increased by 1.5-8 folds in the tailings-soil mix compared to the control, depending on soil addition rates.25 % soil addition doubled the microbial diversity in the tailings-soil mix compared to the control. 50 % soil addition achieved a respiratory quotient, and C and N cycling processes similar to those of the native soil. Again, Proteobacteria and Bacteroidetes significantly stimulated in the tailings-soil mix. Stresses including EC (thus S) and total heavy metals (Pb, Zn) had negatively impacts on microbial community.Biogeochemical changes were investigated in fresh Cu-Mo-Au tailings (containing low levels of reactive minerals with stable hydrogeochemistry) in response to organic amendments (i.e., sugarcane and biochar) and introduction of native grass (Iseilema vaginiflorum) and leguminous shrub (Acacia chisholmii). Microbial diversity were 2-4 folds in all the amended/revegetated tailings compared to the control. Microbial biomass and enzymatic activities in sugarcane amended and revegetated tailings significantly increased by 4-25 folds, with stimulated abundance of Bacteroidetes and the dominance of heterotrophic bacteria (e.g., Algoriphagus sp. Sphingopyxis sp., Sediminibacterium sp., Planctomyces sp.), enhancing plants growth....

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Reductive acid leaching of manganese dioxide with glucose: Identification of oxidation derivatives of glucose

Cited by 74 publications

References 21 publications

An Overview of Manganese Recovery by Hydro and Pyro-Metallurgical Routes

An Overview of Manganese Recovery by Hydro and Pyro-Metallurgical Routes

Electrochemical Behavior of Manganese Oxide Ores Using Coke Wastewater in Sulfuric Acid Solution

Rehabilitation of organic carbon and microbial community structure and functions in Cu-Pb-Zn mine tailings for in situ engineering technosols

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