Synthesis of nano-sized Zn–Mn ferrite from the resulting bioleachate of obsolete Zn–Mn batteries at a high pulp density of 5.0% enhanced by the added Fe3+

Wang, Jia; Tian, Bingyang; Niu, Zhirui; Qi, Shiyue; Bao, Yihui; Xin, Baoping

doi:10.1016/j.jclepro.2019.05.060

Cited by 9 publications

(1 citation statement)

References 31 publications

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“…According to the published literature, waste batteries are mainly treated using pyrometallurgical and hydrometallurgical processes. − However, various solvents such as erosive acids were consumed, which increase the potential environmental risks. Daniela et al proposed a greener method for the recovery of zinc and manganese from alkaline batteries waste using the aqueous two-phase system (ATPS) and showed promising results to extract/separate strategic metals.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Leaching Behavior of Manganese from Waste Zn–Mn Dry Batteries

Zhan

Ren

2021

ACS Sustainable Chem. Eng.

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In this study, phosphoric acid and hydrogen peroxide systems were used to recover manganese from the positive electrode material of zinc−manganese dry batteries. Factors influencing leaching reaction were discussed. The results of response surface analysis showed that the degree of influence of each factor on the leaching reaction followed the trend reaction temperature > solid−liquid ratio > phosphoric acid concentration > reaction time > amount of hydrogen peroxide added. The best conditions for leaching reaction optimized through the curved surface method were as follows: 225 °C temperature, 2.28 mol/L phosphoric acid concentration, 80.9 min reaction time, 30.4 g/L solid to liquid ratio, and 3 vol % hydrogen peroxide. The average leaching efficiency of manganese under best condition was 97.3%, which was consistent with the theoretical value. This model can be used to predict the leaching efficiency of manganese. The apparent activation energy of the leaching reaction was 17.04 kJ/mol.

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