Title:
Effect of the Co-digestion of Olive Mill Wastewater and Municipal Solid Waste Landfill Leachate on Medium Chain Fatty Acids and Hydrogen Production
Author(s):
Saadoun, L., Campitelli, A., Kannengiesser, J., Stanojkovski, D., Mandi, L., Ouazzani, N.
Document(s):
Paper
Poster
Abstract:
olive mill waste water (OMWW) and municipal solid waste landfill leachate are toxic effluents for the environment, which are characterized by high organic matter, and phenolic compounds that inhibit acetogenesis and methanogenesis. As a consequence, they can be tested as co-substrates for producing biobased products and bioenergy (medium-chain fatty acids (MCFAs) and hydrogen). Then, the main aim of this work was to evaluate the potential of the co-digestion process of municipal solid waste landfill leachate and OMWW with different ratios for increasing the production of medium-chain fatty acids (MCFAs) and hydrogen in batch reactors with and without electron donors (ethanol). The experiments were carried out in laboratory reactors in mode batch with different ratios. The results showed that co-digestion especially after ethanol addition, significantly accelerated hexanoic acid production and promoted longer-chain MCFA formation more than mono-digestion and without the addition of ethanol as an electron donor. Meanwhile, the comparison between the four ratios showed that R4 (30:70) with an electron donor increased MCFA production and showed a predominance of hexanoic acid production. Moreover, the increment of the olive mill wastewater ratio in the co-digestion R4(30:70) and R3(50:50) promoted the production of hydrogen in addition to the production of MCFAs.
Keywords:
co-digestion, hydrogen, olive mill wastewater, landfilll leachate, medium chain fatty acids
Topic:
Biomass, Bio-based Products and Bioenergy Integration
Subtopic:
Biomass use in biorefineries
Event:
32nd European Biomass Conference and Exhibition
Session:
3CV.6.8
Pages:
467 - 475
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-3CV.6.8
Price:
FREE
