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Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

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Heavy Metal Removal by Bioaccumulation Using Genetically Engineered Microorganisms.

Patrick Diep¹, Radhakrishnan Mahadevan¹, Alexander F Yakunin¹

¹BioZone - Centre for Applied Biosciences and Bioengineering, Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada.

Frontiers in Bioengineering and Biotechnology

|November 14, 2018

Summary

This summary is machine-generated.

Microbial bioaccumulation offers a sustainable alternative for removing toxic heavy metal ions from industrial wastewater. This review proposes developing bioaccumulation for bioextraction, enabling metal recovery and refining.

Keywords:

bioaccumulation bioextraction bioremediation genetic engineering heavy metal removal mining protein engineering synthetic biology

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Area of Science:

Environmental Science
Biotechnology
Biochemistry

Background:

Mine and refinery effluents pose environmental and health risks due to heavy metal contamination.
Conventional removal methods like chemical precipitation and ion exchange have significant drawbacks, including sludge generation and reliance on non-renewable resources.

Purpose of the Study:

To re-evaluate microbial bioaccumulation as a viable technology for heavy metal ion removal and recovery.
To propose the development of bioaccumulation for bioextractive applications, shifting focus from disposal to resource recovery.

Main Methods:

Consolidation of previously studied microbial import-storage systems into a biochemical framework.
Analysis of obstacles hindering the industrial-scale application of bioaccumulation for heavy metal remediation.

Main Results:

Bioaccumulation, a natural microbial process, can be enhanced through recombinant expression for efficient metal ion uptake and sequestration.
Existing research highlights potential but faces challenges in industrial scalability.

Conclusions:

Bioaccumulation presents a promising avenue for sustainable heavy metal removal and recovery from industrial wastewater.
Further research is needed to overcome industrial feasibility barriers and optimize bioaccumulation systems for large-scale bioextraction.