Recovery of MnO2 from a spent alkaline battery leach solution via ozone treatment

Cruz-Díaz, Martín R.; Arauz-Torres, Yennifer; Caballero, Francisco Vidal; Lapidus, G.T.; González, Ignacio

doi:10.1016/j.jpowsour.2014.10.121

Cited by 16 publications

(11 citation statements)

References 16 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%

“…2 Recycling of spent zinc-MnO 2 dry cells is the best choice to handle this residue from an environmental point of view, and has also become an urgent matter for resource saving. [14][15][16][17] They have been regarded as a secondary source of zinc and manganese. 9,15,18,19 Due to the rising demand and limited supply from natural sources, manganese and zinc have been listed among the strategic metals by many countries.…”

Section: Introductionmentioning

confidence: 99%

“…6,10 Hydrometallurgical routes tend to be less expensive and less energy consuming than pyrometallurgical methods. 14,16,19 Sulfuric acid is by far the most used leachant. 2,[25][26][27][28][29][30][31][32] It provides high zinc recovery whereas most manganese remains in the insoluble residue (Mn(III) and Mn(IV) compounds).…”

Section: Introductionmentioning

confidence: 99%

“…41 Leached Zn(II) can be separated from Mn(II) by chemical precipitation, 22,24 solvent extraction (SX) 2,[25][26][27][28][29][30][31]42 or electrowinning. 16,24 Zn(II) extraction using D2EHPA (di-(2-ethylhexyl)phosphoric acid, a cation exchanger) has been studied since the 1980s. In general, Zn(II) is preferably extracted over Mn(II) in sulfuric acid medium, but the extraction curves may be close to each other according to the experimental conditions.…”

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%

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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“…1,7 The hydrometallurgical option is more versatile considering the final metal species produced and the lower energy consumption. 3,17,20,21 Many processes to recover metals from spent batteries have been intensively studied at the laboratory scale and proved to be very promising. 6 The first step is usually a physical treatment step, which includes crushing and magnetic separation.…”

Section: Introductionmentioning

confidence: 99%

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

Ibiapina¹,

Afonso²,

Silva³

et al. 2018

Quim. Nova

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This paper describes a route for recovering manganese and zinc from spent zinc-MnO 2 dry cells via acid leaching using sulfuric or hydrochloric acids as leachants. Hydrogen peroxide was added as reductant. Experiments were run at 25-40 o C for 1-3 h. Under the best optimal conditions, over 97.5 wt.% of zinc and manganese were leached by both acids. Zn(II) was best extracted at high free acidity (≥ 1 mol L -1 ) with tributylphosphate (TBP) or trialkylphosphine oxides (Cyanex 923) diluted in n-heptane. Cyanex 923 was a better extractant than TBP, and the extraction was better performed in hydrochloric leachates. Mn(II) was more co-extracted from hydrochloric leachates and when Cyanex 923 was the extractant, but was easily scrubbed with dilute leachant (~1-2 mol L -1 ). Zn(II) striping was possible using 5 mol L -1 HCl or H 2 SO 4 . Manganese was precipitated as oxalate (MnC 2 O 4 .2H 2 O), free of 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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“Carbon‐Glue” Enabled Highly Stable and High‐Rate Fe₃O₄ Nanorod Anode for Flexible Quasi‐Solid‐State Nickel–Copper//Iron Alkaline Battery

Jiang

Zhao

et al. 2018

Adv Materials Inter

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The practical application of iron oxide anode in rechargeable alkaline batteries is greatly hampered by the poor electrochemical stability and low rate capability. In addition, flexible solid‐state iron anode‐based rechargeable batteries with distinctive counter electrode coupling are quite lacking. Herein, an interesting “carbon glue” penetration strategy toward Fe3O4 nanorod film anode is proposed. This design not only immobilizes the nanorods and maintains strong adhesion with the current collector but also ensures continuous electrically conductive pathway, resulting in dramatically increased stability (≈99% capacity retention after 1000 cycles) and excellent rate performance (1.2 min charging with ≈70.6% initial capacity kept). By pairing with a new‐type Ni0.49Cu0.51O nanowire array cathode, a unique 1.2 V flexible rechargeable nickel–copper//iron alkaline battery is further assembled, which stores energy based on redox electrochemistry of transition metal ions. It delivers high volumetric energy and power densities (7.21 mWh cm−3; 299.30 mW cm−3), and demonstrates outstanding stability up to 5000 cycles. In particular, with the utilization of quasi‐solid‐state electrolyte, the device still maintains good performance upon substantially bending and twisting. This work presents a new concept to design high stability iron anode‐based alkaline batteries and further pushes forward the development of emerging flexible energy storage systems.

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Recovery of MnO2 from a spent alkaline battery leach solution via ozone treatment

Cited by 16 publications

References 16 publications

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

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

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

“Carbon‐Glue” Enabled Highly Stable and High‐Rate Fe₃O₄ Nanorod Anode for Flexible Quasi‐Solid‐State Nickel–Copper//Iron Alkaline Battery

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Recovery of MnO2 from a spent alkaline battery leach solution via ozone treatment

Cited by 16 publications

References 16 publications

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

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

SEPARATION OF ZINC FROM MANGANESE BY SOLVENT EXTRACTION FROM ACIDIC LEACHATES OF SPENT ZINC-MnO2 DRY CELLS USING NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

“Carbon‐Glue” Enabled Highly Stable and High‐Rate Fe3O4 Nanorod Anode for Flexible Quasi‐Solid‐State Nickel–Copper//Iron Alkaline Battery

Contact Info

Product

Resources

About

“Carbon‐Glue” Enabled Highly Stable and High‐Rate Fe₃O₄ Nanorod Anode for Flexible Quasi‐Solid‐State Nickel–Copper//Iron Alkaline Battery