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Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications
Bonilla-Espadas, M.; Zafrilla, B.; Lifante-Martínez, I.; Camacho, M.; Orgilés-Calpena, E.; Arán-Aís, F.; Bertazzo, M.; Bonete, M.-J. Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications. Microorganisms2024, 12, 1029.
Bonilla-Espadas, M.; Zafrilla, B.; Lifante-Martínez, I.; Camacho, M.; Orgilés-Calpena, E.; Arán-Aís, F.; Bertazzo, M.; Bonete, M.-J. Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications. Microorganisms 2024, 12, 1029.
Bonilla-Espadas, M.; Zafrilla, B.; Lifante-Martínez, I.; Camacho, M.; Orgilés-Calpena, E.; Arán-Aís, F.; Bertazzo, M.; Bonete, M.-J. Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications. Microorganisms2024, 12, 1029.
Bonilla-Espadas, M.; Zafrilla, B.; Lifante-Martínez, I.; Camacho, M.; Orgilés-Calpena, E.; Arán-Aís, F.; Bertazzo, M.; Bonete, M.-J. Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications. Microorganisms 2024, 12, 1029.
Abstract
Tanning, crucial for leather production, relies heavily on chromium yet poses risks due to chromium's oxidative conversion, leading to significant wastewater and solid waste generation. Physico-chemical methods are typically used for heavy metal removal, but they have drawbacks, prompting interest in eco-friendly biological remediation techniques like biosorption, bioaccumulation, and biotransformation. The EU Directive (2018/850) mandates alternatives to landfilling or incineration for industrial textile waste management, highlighting the importance of environmentally conscious practices for leather products' end-of-life management, with com-posting being the most researched and viable option. This study aimed to isolate microorganisms from tannery wastewater and identify those responsible for different types of tanned leather biodegradation. Using a leather biodegradation assay (ISO 20136) with tannery and municipal wastewaters as inoculum, bacterial shifts during leather biodegradation were observed. Over 10,000 bacterial species were identified in all analyzed samples, with 8 bacterial strains isolated from tannery wastewater. Identification of bacterial genera like Acinetobacter, Brevundimo-nas, and Mycolicibacterium provides insights into potential microbial candidates for enhancing leather biodegradability, wastewater treatment, and heavy metal bioremediation in industrial applications.
Keywords
heavy metal reduction; leather biodegradation; microbial strain characterization; tannery wastewater
Subject
Environmental and Earth Sciences, Environmental Science
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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