BioChem - DOS

Dark fermentation of complex waste biomass for biohydrogen production by pretreated thermophilic anaerobic digestate

Journal of environmental management

Ghimire, Anish; Frunzo, Luigi; Pontoni, Ludovico; d'Antonio, Giuseppe; Lens, Piet N.L.; Esposito, Giovanni; Pirozzi, Francesco

<P><B>Abstract</B></P> <P>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？&plusmn;？7.3？ml H<SUB>2</SUB>/g VS) to buffalo manure (135.6？&plusmn;？4.1？ml H<SUB>2</SUB>/g VS), dried blood (slaughter house waste, 87.6？&plusmn;？4.1？ml H<SUB>2</SUB>/g VS), fennel waste (58.1？&plusmn;？29.8？ml H<SUB>2</SUB>/g VS), olive pomace (54.9？&plusmn;？5.4？ml H<SUB>2</SUB>/g VS) and olive mill wastewater (46.0？&plusmn;？15.6？ml H<SUB>2</SUB>/g VS). The digestate was analyzed for major soluble metabolites to elucidate the different biochemical pathways in the BHP tests. These showed the H<SUB>2</SUB> was produced via mixed type fermentation pathways.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The BHP of agro-industrial waste biomass from Campania Region (Italy) is evaluated. </LI> <LI> Agro-industrial wastes are promising substrates for DF biohydrogenation. </LI> <LI> BESA effectively prepares the hydrogen producing seed inoculum. </LI> <LI> Fermentation pathways are helpful to optimize the BHP performance. </LI> </UL> </P>

2015

Elsevier

0301-4797

1095-8630

152

pp.43-48

10.1016/j.jenvman.2014.12.049

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART71514880

Biofuels; Dark fermentation; Biohydrogen; Waste biomass; Waste valorization