BioChem - DOS

Effects of size and autoclavation of fruit and vegetable wastes on biohydrogen production by dark dry anaerobic fermentation under mesophilic condition

International journal of hydrogen energy

Abubackar, Haris Nalakath; Keskin, Tugba; Arslan, Kubra; Vural, Cansu; Aksu, Didem; Yavuzyılmaz, Duygu Karaalp; Ozdemir, Guven; Azbar, Nuri

<P><B>Abstract</B></P> <P>Fermentative hydrogen production from fruit and vegetable wastes (FVWs) through Dry Fermentation Technology (DFT) was studied through three independent experiments in order to find out the effect of particle size and autoclaving pretreatment on bio-hydrogen production from FVWs and as follows: (1) autoclaved FVWs with sizes < 5 cm (experiment I); (2) raw FVWs with sizes < 5 cm (experiment II) and (3) autoclaved FVWs with sizes > 5 cm (experiment III). The assay with autoclaved waste yielded a higher percentage of hydrogen in the headspace of the dry fermenter reaching a maximum value of 44% in experiment I. However, the maximum hydrogen production was obtained in experiment III with 14573 NmL at a yield of 23.53 NmL H<SUB>2</SUB>/gVS. Profiling of the microbial communities by denaturing gradient gel electrophoresis (DGGE) indicated that the most prominent species were the genera <I>Clostridium, Bifidobacterium,</I> and <I>Lactobacillus</I>.</P> <P><B>Highlights</B></P> <P> <UL> <LI> FVWs was treated by dark dry fermentation for biohydrogen production. </LI> <LI> Autoclaving produced 51% improvement of biohydrogen production. </LI> <LI> FVWs with particle size >5 generated highest amount of hydrogen production. </LI> <LI> Acetic acid and isobutyric acid were the major metabolites. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

2019

Elsevier

0360-3199

1879-3487

44

33

pp.17767-17780

10.1016/j.ijhydene.2019.05.106

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART98232492

Dark dry anaerobic fermentation; Autoclaving; Biohydrogen; Fruit and vegetable wastes; Denaturing gradient gel electrophoresis (DGGE)