Integrative Approach for Biohydrogen and Polyhydroxyalkanoate Production
Carbohydrates especially sugars are employed for the production of different bio-products. Biological waste(s) originating from agricultural, industrial, and municipal sources has been considered as suitable low-cost feed for the production of biofuels and biopolymers. Single-stage production of these bio-products does not lead to complete utilization of organic matter of the biowaste(s) used as feed. Recently, approaches to integrate bioprocesses leading to hydrogen (H2), polyhydroxyalkanoate (PHA), and methane production are gaining importance to metabolize more than 80 % of the biowastes. Integration of H2 and PHA has been proposed but has not been widely studied. Here, we are evaluating the feasibility of integrating H2 and PHA production systems. A further integration of these processes with methanogenesis might be a suitable approach in the near future for overall efficiency.
KeywordsChemical Oxygen Demand Volatile Fatty Acid Dark Fermentation NiFe Hydrogenase Uncontrolled Fermentation
The authors wish to thank the Director of CSIR-Institute of Genomics and Integrative Biology (IGIB), Delhi, CSIR-WUM (ESC0108) Government of India for providing necessary funds and facilities. Part of this research work was also supported by 2015 KU Brain Pool of Konkuk University (KU) and the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted financial resource from the Ministry of Trade, Industry and Energy, Republic of Korea (201320200000420). PK is thankful to CSIR for granting Senior Research Fellowship.
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