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An electric current improves Cu and Ni leaching from waste printed circuit boards by immobilized Acidithiobacillus ferrooxidans MA-Y1
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Shicheng WANG1, Jian YANG1, Shuang ZHANG1, Tao LIU1, Yanan SHENG1, Lei YAN1, 2
Acta Microbiologica Sinica | 2025, 65(5) : 2157 - 2174
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Acta Microbiologica Sinica | 2025, 65(5): 2157-2174
• Research Article •
An electric current improves Cu and Ni leaching from waste printed circuit boards by immobilized Acidithiobacillus ferrooxidans MA-Y1
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Shicheng WANG1, Jian YANG1, Shuang ZHANG1, Tao LIU1, Yanan SHENG1, Lei YAN1, 2
Affiliations
  • 1.Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
  • 2.Key Laboratory of Low-carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
Published: 2025-05-04 doi: 10.13343/j.cnki.wsxb.20240770
Outline
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[Objective] Waste printed circuit boards (PCBs) contain about 40% non-ferrous metals, which is more than 40 times that of natural ores, and thus they are known as a veritable “urban mine”. To achieve efficient and green recycling of PCBs, this study developed a leaching system that can efficiently leach non-ferrous metals from PCBs. [Methods] Acidithiobacillus ferrooxidans MA-Y1 was used to construct a bioleaching system for PCBs. Additionally, an electric current was introduced to strengthen the Cu and Ni leaching from PCBs. [Results] The optimal leaching parameters were addition of PCBs at 80.0 g/L, particle size of 4.0 cm, liquid velocity of 2.0 L/min, and electric current of 70.0 mA. Under these conditions, the leaching ratios of Cu and Ni from PCBs were 84.0% and 75.3%, respectively, which represented increases of 15.8% and 17.1% compared with the case without electric current. [Conclusion] An electric current improves the ability of A. ferrooxidans MA-Y1 to recover Cu and Ni from PCBs.

immobilization  /  response surface  /  printed circuit boards  /  Acidithiobacillus ferrooxidans  /  bioleaching
Shicheng WANG, Jian YANG, Shuang ZHANG, Tao LIU, Yanan SHENG, Lei YAN. An electric current improves Cu and Ni leaching from waste printed circuit boards by immobilized Acidithiobacillus ferrooxidans MA-Y1[J]. Acta Microbiologica Sinica, 2025 , 65 (5) : 2157 -2174 . DOI: 10.13343/j.cnki.wsxb.20240770
Funding
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  • Natural Science Foundation of Heilongjiang Province(LH2024C074)
  • Program for Young Talents of Basic Research in Universities of Heilongjiang Province(YQJH2024163)
  • Natural Science Talents Program of Heilongjiang Bayi Agricultural University(RCPY202320)
  • Natural Science Talents Program of Heilongjiang Bayi Agricultural University(RCPY202321)
Appendix
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Year 2025 volume 65 Issue 5
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115
48
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Article Info
doi: 10.13343/j.cnki.wsxb.20240770
  • Receive Date：2024-12-02
  • Online Date：2026-02-05
  • Published：2025-05-04
Article Data
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History
  • Received：2024-12-02
  • Accepted：2025-01-27
Funding
Natural Science Foundation of Heilongjiang Province(LH2024C074)
Program for Young Talents of Basic Research in Universities of Heilongjiang Province(YQJH2024163)
Natural Science Talents Program of Heilongjiang Bayi Agricultural University(RCPY202320)
Natural Science Talents Program of Heilongjiang Bayi Agricultural University(RCPY202321)
Affiliations
    1.Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-waste in Cold Region, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
    2.Key Laboratory of Low-carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China

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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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