Articles
  • A comparative review on recovery of heavy metals from printed circuit boards (PCB’S) by chemical and bio-leaching

  • Murugesan Manikkampatti Palanisamya,*, Akilamudhan Palaniyappanb, Venkata Ratnam Mynenic, Kannan Kandasamyd, and Padmapriya Veerappane

  • aDepartment of Food Technology, Excel Engineering College, Namakkal, Tamil Nadu, India-637303
    bDepartment of Chemical Engineering, Erode Sengunthar Engineering College, Erode, Tamil Nadu, India-638057
    cDepartment of Chemical Engineering, Mettu University, Ethiopia
    dDepartment of Chemical Engineering, Kongu Engineering College, Perundurai, Erode, Tamil Nadu, India -638060
    eDepartment of Electronics Communication Engineering, Erode Sengunthar Engineering College, Erode, Tamil Nadu, India638057

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The electronics industry is the world's largest and fastest growing industry. This consumer-centric industry's combination of technology advancements and quick product obsolescence creates new environmental issues. There is an urgent need to address the volume and toxicity of electronic waste generated. Printed circuit boards (PCBs) are a significant component of electronic trash, containing mostly heavy metals such as copper (Cu), tin (Sn), zinc (Zn), and lead (Pb). Metal recovery and recycling from PCBs is an important step in pollution prevention. Researchers have devised many methods for recovering precious metals from PCBs, including gravity separation, magnetic separation, and electrostatic separation, as well as PCB separation using the organic solvent technique, leaching method, bioleaching method, or a combination of these methods. This research provides a brief summary of India's present e-waste status, environmental and health risks, continuing waste disposal and recycling activities, and emphasizes the recovery of heavy metals from PCBs by systematic leaching/bioleaching


Keywords: Printed Circuit Board (PCBs), Metal extraction, Chemical Leaching, Biological leaching, Adsorption

This Article

  • 2022; 23(1): 90-98

    Published on Feb 28, 2022

  • 10.36410/jcpr.2022.23.1.90
  • Received on Sep 16, 2021
  • Revised on Sep 25, 2021
  • Accepted on Oct 4, 2021

Correspondence to

  • Murugesan Manikkampatti Palanisamy

  • Department of Chemical and Electrochemical Engineering, Central Electrochemical Research Institute (CSIR˗CECRI), Karaikudi, Tamil Nadu, India-630003
    Tel : +9566604416

  • E-mail: murugesanmp@esec.ac.in