Bioprocessing of Waste for Renewable Chemicals and Fuels to Promote Bioeconomy

Gayathri Priya Iragavarapu, Syed Shahed Imam, Omprakash Sarkar, Srinivasula Venkata Mohan, Young-Cheol Chang, Motakatla Venkateswar Reddy, Sang-Hyoun Kim and Naresh Kumar Amradi ()
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Gayathri Priya Iragavarapu: Centre for Computational Natural Sciences and Bioinformatics (CCNSB), International Institute of Information Technology Hyderabad (IIIT-H), Hyderabad 500032, India
Syed Shahed Imam: Sreenidhi Institute of Science and Technology, Hyderabad 500029, India
Omprakash Sarkar: Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, 97187 Luleå, Sweden
Srinivasula Venkata Mohan: Bioengineering and Environmental Science Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
Young-Cheol Chang: Course of Chemical and Biological Engineering, Muroran Institute of Technology, Muroran 0508585, Japan
Motakatla Venkateswar Reddy: Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO 80523, USA
Sang-Hyoun Kim: School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
Naresh Kumar Amradi: Department of Environmental Science and Technology, University of Maryland, College Park, MD 20742, USA

Energies, 2023, vol. 16, issue 9, 1-24

Abstract: The world’s rising energy needs, and the depletion of fossil resources demand a shift from fossil-based feedstocks to organic waste to develop a competitive, resource-efficient, and low-carbon sustainable economy in the long run. It is well known that the production of fuels and chemicals via chemical routes is advantageous because it is a well-established technology with low production costs. However, the use of toxic/environmentally harmful and expensive catalysts generates toxic intermediates, making the process unsustainable. Alternatively, utilization of renewable resources for bioprocessing with a multi-product approach that aligns novel integration improves resource utilization and contributes to the “green economy”. The present review discusses organic waste bioprocessing through the anaerobic fermentation (AF) process to produce biohydrogen (H 2 ), biomethane (CH 4 ), volatile fatty acids (VFAs) and medium chain fatty acids (MCFA). Furthermore, the roles of photosynthetic bacteria and microalgae for biofuel production are discussed. In addition, a roadmap to create a fermentative biorefinery approach in the framework of an AF-integrated bioprocessing format is deliberated, along with limitations and future scope. This novel bioprocessing approach significantly contributes to promoting the circular bioeconomy by launching complete carbon turnover practices in accordance with sustainable development goals.

Keywords: organic waste; biomethane; biohydrogen; waste biorefinery; volatile fatty acids (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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