A Review on Bioremediation of Tannery Effluent using Immobilized Bacteria
2024
J. Raveena Jayam and Priya Chokkalingam
Tannery effluent is a significant contributor to contaminants such as heavy metals within the ecosystem. Effluents generally contain heavy metals, and they also contain more bacteria that can thrive in such an environment. Bioremediation has ancestrally been performed using bacteria; in recent decades, the implementation of “immobilized” bacteria has acquired recognition as an intriguing technique due to manifold assistance. This review systematizes a humongous amount of extant literature on multifarious toxicants that can be tackled with immobilized bacteria. We further explore assorted deterministic facets using immobilized bacteria for environmental remediation with an emphasis on encapsulation in biomaterials and their role in detoxifying toxic compounds. We explore multiple techniques for immobilizing bacteria in numerous complementary arrays incorporating multiple species of bacteria, factors that influence the remediation process, such as bioreactor layouts used in pilot, lab-scale applications. Exploits and drawbacks of using immobilized bacteria in fermenters to treat tannery effluent are also described. The imperishable future aspects, recovery of significant commodities, in addition to bioremediation, represent an important incentive of the immobilized treatment process that makes more cost-effective, legitimate treatment enforcement that is also congruent with the precepts of the bioeconomy.
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