Title:Bioleaching Extraction of Valuable Metal From E-Wastes: A Mini
Review
Volume: 16
Issue: 5
Author(s): Mingjun Jiang, Siyu He and Yongkui Zhang*
Affiliation:
- Department of Pharmaceutical & Biological Engineering, School of
Chemical Engineering, Sichuan University, Chengdu, 610065, China
Keywords:
E-wastes, bioleaching, metal recovery, bioleaching process, bioleaching mechanism, bacterial groups.
Abstract: Electrical waste (E-waste) is a significant global issue, with an annual generation
of over 50 million tons, causing detrimental effects on both the environment and human
health. However, E-waste is also known as a secondary valuable metal resource. Although
hydrometallurgy and pyrometallurgy are still the preferred methods for metal recovery
from E-wastes, bioleaching has gained significant attention as a promising alternative
for metal recovery from E-wastes due to its sustainability, environmental friendliness, and
cost efficiency. In this review, different chemical principles of bioleaching were first discussed.
Major bacterial groups that can be applied in bioleaching were then introduced.
The bioleaching procedures and applications have been summarized and analyzed. Finally,
a few perspectives were made on potential future research on bioleaching.