Samanta, Monalisha and Ghosh, Subhrajyoti and Sahoo, Ganesh Chandra and Ghosh, Sourja (2025) Industrial Waste to Biohydrogen Production: An Innovative Membrane Based Approach. In: 4th World Hydrogen Energy Summit 2025, Green Hydrogen towards Net Zero Pathways, 15-16 April 2025, NDMC-Convention Centre, Parliament Street, New Delhi.
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Biohydrogen production from carbohydrate rich organic wastes by fermentation route emerges as a sustainable option for renewable energy generation. Application of membrane technology in fermentation process can be beneficial as the membrane facilitate in removing the H2 generation inhibitors from the fermentation reaction, such as volatile fatty acids (VFA) and alcohols and improves the process yield. In the present study a novel nickel oxide (NiO) based ceramic catalytic membrane is developed on clay-alumina tubular support with an intermediate bentonite clay coating for application in membrane bioreactor (MBR) process. The prepared membrane showed highly hydrophilic surface involving static water contact angle of 32 . A reduction in the clean water permeability (CWP) of membrane was observed due to the surface coating, 25 Lm-2 h-1 bar-1 in comparisons with that of the pristine support, 105 Lm-2h-1bar-1. From FESEM and EDX analysis, impregnation of NiO ~28-29 (wt%) was evident on the membrane surface. Further, VFA rejection efficiency of the catalytic membrane was observed high with respect to butyric acid (50%) and acetic acid (60%) compared to the pristine support (30-40%). The membranes were used in a batch mode cylindrical bioreactor (7 L) made with stainless steel for the dark fermentation process utilizing simulated molasses wastewater having initial COD of 8000 mg/l. to produce biohydrogen under anaerobic condition in the presence of Clostridium sp. with controlled pH (6-7), temperature 35-40°C and stirring conditions (300 rpm). The performance efficiency of fermentation process was compared in three types of system: i) without membrane, ii) with pristine supports and iii) with catalytic membranes. After 120 h of fermentation, biohydrogen generation was recorded as 0.15, 0.35 and 0.48 mol H2/mol of carbohydrate in the systems (i), (ii) and (iii) respectively. With appropriate optimization of the wastewater composition in terms of carbohydrate content, use of microorganism consortium such as Clostridium sp. and Enterobactor. sp. and employing a novel bi-metallic (Ni-Fe) based catalytic membrane can enhance the biohydrogen yield towards establishing a sustainable waste-to-energy production pathway.
| Item Type: | Conference or Workshop Item (Poster) |
|---|---|
| Uncontrolled Keywords: | Waste to energy, biohydrogen, ceramic membrane bioreactor, metal oxide membrane, fermentative membrane reactor |
| Subjects: | Environment and Pollution |
| Divisions: | Ceramic Membrane |
| Depositing User: | Ms Upasana Sahu |
| Date Deposited: | 01 Sep 2025 10:36 |
| Last Modified: | 01 Sep 2025 10:36 |
| URI: | http://cgcri.csircentral.net/id/eprint/5777 |
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