Bioleaching of spent Zn–Mn or Ni–Cd batteries by Aspergillus species

Kim, Min Ji; Seo, Ja Yeon; Choi, Yong Seok; Kim, Gyu Hyeok

doi:10.1016/j.wasman.2015.11.001

Cited by 112 publications

(43 citation statements)

References 23 publications

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“…These results indicate that citric acid effectively solubilized Zn from waste button cell batteries. Citric acid was reported to play a key role in the recovery of Zn from Zn-Mn batteries [3]. The leaching of Hg was not satisfactory.…”

Section: Various Physicochemical Parametersmentioning

confidence: 99%

“…Conventional techniques, such as pyro-and hydrometallurgy, are used to extract metals from these wastes [1,2]. Although these methods are fast and efficient, they require high energy and emit toxic gases and chemicals, so these processes are expensive and cause secondary pollution [3]. There is a need to develop an eco-friendly and sustainable process to recycle waste button cell batteries.…”

Section: Introductionmentioning

confidence: 99%

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Leaching of Metals from Waste Silver Oxide-Zinc Button Cell Batteries by Aspergillus niger

Jadhav

Chakankar

et al. 2018

Batteries

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Leaching of metals from waste button cell batteries was explored in this study. Aspergillus niger spent medium was used for metal leaching to avoid toxicity of metals toward microbial cells. Process parameters including time, temperature, shaking speed, and volume of the spent medium were optimized. We obtained 100% leaching of zinc and silver in six hours at 60 °C and 100 rpm using 15 mL spent medium. The use of spent medium supported the indirect leaching process. The organic acid produced by fungi acts as a lixiviant, aiding the metal leaching in this process.

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Section: Various Physicochemical Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Leaching of Metals from Waste Silver Oxide-Zinc Button Cell Batteries by Aspergillus niger

Jadhav

Chakankar

et al. 2018

Batteries

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“…This effort will be helpful for developing an industrial process. [13]The BoxBehnken design model predicted recovery of 85.6% Ni, 66.1% Cd, and 90.6% Co under optimized conditions. The authors confirmed these results using an experiment at optimum condition, which resulted in 87%, 67%, and 93.7% recovery of Ni, Cd, and Co, respectively.…”

Section: Advances In Engineering Research Volume 115mentioning

confidence: 99%

“…However, fungi have several advantages over bacterial bioleaching including their ability to grow at high pH, making them more effective for bioleaching of alkaline materials. Recently, Kim et al (2016) used several species of Aspergillusfor metal bioleaching from spent batteries using malt extract and sucrose as a nutrient source. [13] A comparison of various methods is shown in Table 1.…”

Section: Advances In Engineering Research Volume 115mentioning

confidence: 99%

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Assessment of Bio-Hydrometallurgical metal recovery from Ni-Cd batteries

Chakankar¹,

Jadhav²,

Hocheng³

2017

2nd Annual International Conference on Energy, Environmental &Amp; Sustainable Ecosystem Development (EESED 2016)

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The use of electrical devices has been increased tremendously around the world. Portable nickel-cadmium (Ni-Cd) batteries have been used in electronic products for many decades and have resulted in the generation of huge amounts of waste batteries. The battery disposal in municipal solid waste has become a serious problem for many countries. A battery can be considered as a recyclable material due to its high metal content and cannot be dumped directly in landfills, both for environmental and economic reasons. Amongst the metals present in Ni-Cd batteries, Cd is a toxic heavy metal harmful to both humans and environment. However, Ni and Co are valuable metals as a result of a decrease in their reserves and consequent increase in trading prices. Their disposal not only causes the loss of valuable metals but also demands the expenses for new material. Consequently, these spent batteries can be used as a secondary source for metals. The recycling of spent batteries is a growing industry. This review assesses the biohydrometallurgical process for recovery of metals from spent Ni-Cd batteries.

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