Electrochemical evaluation of manganese reducers – Recovery of Mn from Zn–Mn and Zn–C battery waste

Sobianowska-Turek, Agnieszka; Szczepaniak, W.; Zabłocka-Malicka, Monika

doi:10.1016/j.jpowsour.2014.07.136

Cited by 33 publications

(18 citation statements)

References 34 publications

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“…These results are comparable to the best ones reported in the literature 20 using strong acids. Leaching with H 2 SO 4 was somewhat longer than the average time reported in the literature, 5,7,14,16 but temperature was higher in such studies o C) than in the present work and carbon was not eliminated.…”

Section: Leaching Resultscontrasting

confidence: 62%

“…1,2 The most commonly used types of batteries are the zinc-MnO 2 dry cells (Leclanché and alkaline). [3][4][5][6] They are usually chosen for objects where small quantities of power are required. 7 These batteries are not rechargeable and usually run out rapidly.…”

Section: Introductionmentioning

confidence: 99%

“…17,38 This acid has already been investigated as a leachant for spent catalysts. 39,40 Different from many carboxylic acids (citric, malic, succinic, oxalic, iminodiacetic, tartaric), 5,21 formic acid has apparently not been tested yet. Like oxalic acid, the simplest aliphatic monocarboxylic acid is a strong reductant, but does not precipitate metal ions as does oxalate.…”

Section: Introductionmentioning

confidence: 99%

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PROCESSING OF SPENT ZINC-MnO2 DRY CELLS IN VARIOUS ACIDIC MEDIA

et al. 2017

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publicado na web em 04/12/2017 This paper describes a route for recovering manganese and zinc from spent zinc-MnO 2 dry cells via acid leaching. Sulfuric, hydrofluoric and formic acids were used as leachants. Hydrogen peroxide was added as reductant, except for formic acid since it is itself a reductant. Experiments were run at 25-40 o C for 1-3 h. Under the best optimal conditions, over 95 wt.% of zinc and manganese were leached irrespective of the leachant. Leaching of contaminants was strongly dependent on the leachant due to the insolubility of salts or complexing reactions. Zn(II) was best extracted with D2EHPA diluted in n-heptane at pH > 1, particularly from the leachates of weak acids. Mn(II) was much more co-extracted from sulfuric leachates, but was easily scrubbed with dilute leachant (~2 mol L -1 ). Zn(II) striping was possible using 5 mol L -1 H 2 SO 4 . Manganese was isolated as MnO 2 carrying the leached contaminants. High-purity sodium salts of the anions of the leachants were recovered after slow evaporation of the final solution.

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Section: Leaching Resultscontrasting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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PROCESSING OF SPENT ZINC-MnO2 DRY CELLS IN VARIOUS ACIDIC MEDIA

et al. 2017

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“…A detailed description of the leaching process containing the selection of leaching parameters is given in [31,32]. The degree of leaching was * 85-95% for zinc and 25-30% for manganese.…”

Section: Mn-zn Ferrite Preparationmentioning

confidence: 99%

The study of thermal, microstructural and magnetic properties of manganese–zinc ferrite prepared by co-precipitation method using different precipitants

Szczygieł

Winiarska

Sobianowska-Turek

2018

J Therm Anal Calorim

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Mn-Zn ferrite was prepared from the solution after acid leaching of spent batteries by co-precipitation method using ammonia oxalate, sodium carbonate and sodium hydroxide as precipitating agents. The co-precipitation process was performed at temperature of over 50°C by continuous magnetic stirring. The precipitates were pre-sintered at 850°C in air. Dilatometric study has revealed that lowest shrinkage (only 5.6%) showed a material obtained from an oxalate precipitant. After pressing and high-temperature sintering at 1325°C, it showed both insufficient density and the presence of pores, which contribute to the deterioration in the magnetic properties of the ferrites: the low magnetic permeability value and high magnetic losses. Ferrite prepared from hydroxide and carbonate precipitant showed a much higher shrinkage, sintered density and much higher magnetic permeability compared with the ferrite prepared from oxalate precursor.

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“…The waste batteries present serious problems due to their toxicity, abundance and longevity in the environment [1]. The hydrometallurgical methods are the most popular process in all over the world because of its environmental suitability and economical coasts for treating even low zinc and manganese containing materials on small scale with high purity and low energy requirements [2,3]. Hence, the treatment of these wastes for the recovery of manganese is vigorous for discarded material to raw material recycling.…”

Section: Introductionmentioning

confidence: 99%

Electro chemical and photo catalytic studies of MnO2 nanoparticle from waste dry cell batteries

Mylarappa¹,

Venkata²,

Vishnu³

et al. 2016

Nanosystems: Phys. Chem. Math.

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The objective of the existing research was essentially focused on recovery of MnO 2 nanoparticles from consumed dry cells by employing adapted hydrometallurgical process. Experimental tests for the recovery of MnO 2 present in the dry cell batteries have been carried out by an acidic reductive leachant, namely oxalic acid. The elemental compositions of the recovered metals from dry cells were confirmed by Energy Dispersive X-ray analysis (EDAX). Surface morphology of the recovered metals was examined using Scanning Electron Microscopy (SEM). Phase composition of the recovered metals from dry cell batteries were confirmed from X-ray Diffract meter (XRD). Cyclic Voltammetry (CV) studies were carried out to clarify the reversibility of the reactions. The obtained MnO 2 catalyst was applied for the degradation of different non-volatile dye compounds such as Indigo carmine (IC) and Rhodamine B (RB). The performance of MnO 2 shows fast degradation of dyes of high concentration.

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Electrochemical evaluation of manganese reducers – Recovery of Mn from Zn–Mn and Zn–C battery waste

Cited by 33 publications

References 34 publications

PROCESSING OF SPENT ZINC-MnO2 DRY CELLS IN VARIOUS ACIDIC MEDIA

PROCESSING OF SPENT ZINC-MnO2 DRY CELLS IN VARIOUS ACIDIC MEDIA

The study of thermal, microstructural and magnetic properties of manganese–zinc ferrite prepared by co-precipitation method using different precipitants

Electro chemical and photo catalytic studies of MnO2 nanoparticle from waste dry cell batteries

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