Bioleaching of spent Ni–Cd batteries by continuous flow system: Effect of hydraulic retention time and process load

Zhao, Ling; Yang, Dong; Zhu, Nanwen

doi:10.1016/j.jhazmat.2008.03.048

Cited by 53 publications

(21 citation statements)

References 24 publications

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“…They demonstrated the production of sulphuric acid or ferric ions using elemental sculpture or ferrous ions as the energy source by the strains of thiobacilli mainly T. thiooxidans, and T. ferrooxidans. Zhao et al (2008b) showed that more time was required to achieve the complete leaching of metals from Ni-Cd batteries with the increasing hydraulic retention time [11]. Results indicated that the efficiency of leaching process increased by selecting appropriate parameters.…”

Section: Bio-hydrometallurgical Process For Recycling Of Ni-cd Batteriesmentioning

confidence: 99%

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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Section: Bio-hydrometallurgical Process For Recycling Of Ni-cd Batteriesmentioning

confidence: 99%

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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“…Among the waste used as raw material are sludge from galvanization plants [49], ashes [50][51][52], sediments [53], batteries [54][55][56][57][58], electrical and electronic waste [59][60][61][62][63][64][65], catalysts [66,67,68], mixed metallic waste ("fine shredder residues") [69], red mud [70,71], waste from copper smelting [60,72] and soil [73,74].…”

Section: Department Of Chemical Engineering Polytechnic School Univmentioning

confidence: 99%

Leaching Processes

Calgaro¹,

Tanabe²,

Bertuol³

et al. 2015

Electronic Waste

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When solid materials are exposed to a liquid, some constituents will dissolve to a greater or lesser extent. The degree of dissolution of individual constituents by the contacting liquid leads to a leachate/percolate or extract composition that can be of interest for different purposes [1], such as the extraction of metals from solid waste through a suitable leachant. Leaching is a step in hydro-and electrometallurgical processes and has been also employed for the recovery of metals from waste of electrical and electronic equipment (WEEE). The process may be preceded by a mechanical pretreatment of the waste (see Chap. 6) and followed by purification and metal recovery from the solution (see Chaps. 8 and 9). This chapter will discuss the different leaching solutions and conditions for WEEE processing.

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“…In mining industry, bio-hydrometallurgical processes (bioleaching) have been gradually replacing hydrometallurgical ones to extract target metals from low-grade ores due to their environment friendliness, low cost and few industrial requirements [9][10][11][12][13]. Recently, bioleaching technology has been attracting growing concerns in recovery of valuable metals Co, Li, Ni, Cd, Zn, Mn from various spent batteries such as Ni-Cd batteries, lithium-ion batteries, ZMBs as the secondary resources [2,[14][15][16][17], displaying a prosperous future.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, the spent batteries always contain high concentration of alkaline matter or toxic compounds as oxides or hydroxides which greatly harm growth and activity of leaching cells. As a result, the pulp density was often only 1% or lower in bioleaching of the spent batteries [14][15][16]23], meaning that a significant quantity of media and a great volume of reactor were required [2].…”

Section: Introductionmentioning

confidence: 99%