Design and Demonstration of Prototype Green Hydrogen Production Process in Biorefinery Platform with Net Zero Emissions
Subcategory (under Clean Energy): Hydrogen
Technology Readiness Level (TRL): TRL 5 - Large prototype
Technology Outline (Process Description)
The project is to develop and demonstrate an integrated, cost-effective and environmentally sustainable biorefinery process to produce green H2 (1,60,000 L/15 kg per day) as main product using solid waste (biogenic municipal). Dark-fermentation embedded biorefinery platform is designed with reference to the proof of concept (TRL-5) by integrating unit operations viz., Acidogenesis, Methanogenic, Hybrid-Aerobic-Anoxic, and Mixotrophic-algal process towards H2 production as main product followed by biomethane, volatile fatty acids (short chain), bioplastics (PHA) and algal biomass (protein based for animal/ fish feed) along with treated water (for recycling) and oxygen as by-products with net zero emissions. Integration of dark- fermentation with other bioprocesses aims at maximizing the product(s) synthesis and resource recovery by putting back the unutilized carbon into the ecological loop in the biorefinery approach.
Salient Features/Advantages
- The novelty of the proposed prototype system viz. (i) employs biogenic process, (ii) utilizes waste and produces multiple bio-based products along with H2 as main product in circular biorefinery approach, (iii) net zero emissions, (iv) operates at ambient condition, (v) positive net energy ratio (NER >2), (vi) decentralized/centralized operation flexibility and (vii) environmentally sustainable in operation
Key Outcomes
- Biohydrogen production from 50 g COD/l of food waste in pilot scale system of 30 L/day of feed showed productivity of 480 L/ day of total biogas with an H2 yield of 240 L/day and VFA production of 0.49 kg/day composed of 0.28 kg of HAc followed by HBu (0.14 kg) and HPr (0.07 kg)
IP Protection details
- Patent filed (Title, national/International): Nil
- Patents Granted: Nil
- Copyrights obtained /progress on commercialisation /Pl. specify connect with industry: Nil
Contact details (for more information)
- Nodal Person name: Dr. S. Venkata Mohan
- Email ID: svmohan@iict.res.in
- Organisation name (Relevant link/web page): CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
Supporting Photographs/Images

Organizations involved in the development (logo/name) CSIR-Indian Institute of Chemical Technology (CSIR-IICT) |