Hydrogen production potential comparison of sucrose and crude glycerol using different inoculums sources Online publication date: Mon, 01-Jun-2020
by Maria Cristina De Almeida Silva; Luiz Olinto Monteggia
International Journal of Environment and Waste Management (IJEWM), Vol. 25, No. 4, 2020
Abstract: The hydrogen production potential from crude glycerol was evaluated using a batch test, at four different food microrganisms ratios (F/M) and the results were compared with sucrose, a substrate considered a degradation model. It was used two different inoculums, one generated by natural fermentation of the used substrates and the other by direct inoculum, using pretreated anaerobic sludge. The obtained results indicated low hydrogen potential production using natural inoculum. The predominant volatile fatty acids (VFA) were acetic and butyric acids, and when used direct inoculation, the acidification degree reached of up to 50%. The productivities were close to and even higher than those obtained with sucrose, with direct inoculum, reaching a maximum value of 8.5 mL H2/L·h at F/M 2. It was observed a decrease of the crude glycerol conversion efficiency when higher F/M ratios were used, possible by high concentrations of glycerol cause an inhibitory effect on H2 production.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Waste Management (IJEWM):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook