Globally, every year, electronic and electrical equipment trash is produced 20–50 million tonnes due to the rapid expansion in population. Its poisonous heavy metal composition creates health problems for people, animals, and plants in the environment. Various biological, chemical, and physical techniques were employed to remove precious metals from environmental electronic waste. One of the traditional methods for recovering PCB metals from chemical leaching is using different chemical compounds. Furthermore, some severe ecological challenges are associated with conventional methods that generate secondary pollution and are often costly. Bioleaching is given additional attention because it is more effective at recovering metal from printed circuit boards and is cost-effective and environmentally friendly. E-waste managementManagement is crucial since it contains many toxic materials, including metals, polymers, and refractory materials, that are dangerous or problematic for the atmosphere and human health. Hence, this research provides an overview of the current industrial methods for metal recycling, their mechanism, and factors that affect metal removal efficiency and discusses the e-waste managementManagement strategy followed by different nations.

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E-Waste Recycling: A Comprehensive Review on Metal Recovery and the Factors Affecting Bioleaching

  • Sugandha Aachhera,
  • Shatakshi Tiwari,
  • Pradeep Verma,
  • Chandra Sekhar Gahan

摘要

Globally, every year, electronic and electrical equipment trash is produced 20–50 million tonnes due to the rapid expansion in population. Its poisonous heavy metal composition creates health problems for people, animals, and plants in the environment. Various biological, chemical, and physical techniques were employed to remove precious metals from environmental electronic waste. One of the traditional methods for recovering PCB metals from chemical leaching is using different chemical compounds. Furthermore, some severe ecological challenges are associated with conventional methods that generate secondary pollution and are often costly. Bioleaching is given additional attention because it is more effective at recovering metal from printed circuit boards and is cost-effective and environmentally friendly. E-waste managementManagement is crucial since it contains many toxic materials, including metals, polymers, and refractory materials, that are dangerous or problematic for the atmosphere and human health. Hence, this research provides an overview of the current industrial methods for metal recycling, their mechanism, and factors that affect metal removal efficiency and discusses the e-waste managementManagement strategy followed by different nations.