A review on microbes mediated resource recovery and bioplastic (polyhydroxyalkanoates) production from wastewater.

Autor: Ahuja V; Department of Biotechnology, University Centre for Research & Development, Chandigarh University, Mohali, Punjab, 140413, India., Singh PK; Department of Biotechnology, University Centre for Research & Development, Chandigarh University, Mohali, Punjab, 140413, India., Mahata C; Department of Agricultural and Biological Engineering, University of Illinois at Urbana- Champaign, 1304 W. Pennsylvania Avenue, Urbana, 61801, USA., Jeon JM; Green & Sustainable Materials R&D Department, Research Institute of Clean Manufacturing System, Korea Institute of Industrial Technology (KITECH), Chungnam, 331-825, Republic of Korea., Kumar G; School of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea.; Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600, Forus, Stavanger, 4036, Norway., Yang YH; Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea.; Institute for Ubiquitous Information Technology and Application, Konkuk University, Seoul, 05029, Republic of Korea., Bhatia SK; Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea. shashibiotechhpu@gmail.com.; Institute for Ubiquitous Information Technology and Application, Konkuk University, Seoul, 05029, Republic of Korea. shashibiotechhpu@gmail.com.
Jazyk: angličtina
Zdroj: Microbial cell factories [Microb Cell Fact] 2024 Jul 01; Vol. 23 (1), pp. 187. Date of Electronic Publication: 2024 Jul 01.
DOI: 10.1186/s12934-024-02430-0
Abstrakt: Background: Plastic is widely utilized in packaging, frameworks, and as coverings material. Its overconsumption and slow degradation, pose threats to ecosystems due to its toxic effects. While polyhydroxyalkanoates (PHA) offer a sustainable alternative to petroleum-based plastics, their production costs present significant obstacles to global adoption. On the other side, a multitude of household and industrial activities generate substantial volumes of wastewater containing both organic and inorganic contaminants. This not only poses a threat to ecosystems but also presents opportunities to get benefits from the circular economy. Production of bioplastics may be improved by using the nutrients and minerals in wastewater as a feedstock for microbial fermentation. Strategies like feast-famine culture, mixed-consortia culture, and integrated processes have been developed for PHA production from highly polluted wastewater with high organic loads. Various process parameters like organic loading rate, organic content (volatile fatty acids), dissolved oxygen, operating pH, and temperature also have critical roles in PHA accumulation in microbial biomass. Research advances are also going on in downstream and recovery of PHA utilizing a combination of physical and chemical (halogenated solvents, surfactants, green solvents) methods. This review highlights recent developments in upcycling wastewater resources into PHA, encompassing various production strategies, downstream processing methodologies, and techno-economic analyses.
Short Conclusion: Organic carbon and nitrogen present in wastewater offer a promising, cost-effective source for producing bioplastic. Previous attempts have focused on enhancing productivity through optimizing culture systems and growth conditions. However, despite technological progress, significant challenges persist, such as low productivity, intricate downstream processing, scalability issues, and the properties of resulting PHA.
(© 2024. The Author(s).)
Databáze: MEDLINE
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