Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 152, Issue -, Pages 43-48Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2014.12.049
Keywords
Biofuels; Dark fermentation; Biohydrogen; Waste biomass; Waste valorization
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Funding
- EU [2010-0009]
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The Biohydrogen Potential (BHP) of six different types of waste biomass typical for the Campania Region (Italy) was investigated. Anaerobic sludge pre-treated with the specific methanogenic inhibitor sodium 2-bromoethanesulfonic acid (BESA) was used as seed inoculum. The BESA pre-treatment yielded the highest BHP in BHP tests carried out with pre-treated anaerobic sludge using potato and pumpkin waste as the substrates, in comparison with aeration or heat shock pre-treatment. The BHP tests carried out with different complex waste biomass showed average BHP values in a decreasing order from potato and pumpkin wastes (171.1 +/- 7.3 ml H-2/g VS) to buffalo manure (135.6 +/- 4.1 ml H-2/g VS), dried blood (slaughter house waste, 87.6 +/- 4.1 ml H-2/g VS), fennel waste (58.1 +/- 29.8 ml H-2/g VS), olive pomace (54.9 +/- 5.4 ml H-2/g VS) and olive mill wastewater (46.0 +/- 15.6 ml H-2/g VS). The digestate was analyzed for major soluble metabolites to elucidate the different biochemical pathways in the BHP tests. These showed the H-2 was produced via mixed type fermentation pathways. (C) 2015 Elsevier Ltd. All rights reserved.
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