BioChem - DOS

Using a food and paper-cardboard waste blend as a novel feedstock for hydrogen production: Influence of key process parameters on microbial diversity

International journal of hydrogen energy

Pendyala, B.; Chaganti, S.R.; Lalman, J.A.; Heath, D.D.; Shanmugam, S.R.; Veeravalli, S.S.

In this study, fermentation of a thermally treated simulated organic solid waste into hydrogen (H<SUB>2</SUB>) was examined using a pretreated anaerobic mixed culture. The culture was fed a steam exploded food waste plus paper-cardboard waste blend liquor with and without linoleic acid (LA). The individual and interaction effects of the initial pH, LA concentration and the initial chemical oxygen demand (COD) concentration on H<SUB>2</SUB> and methane (CH<SUB>4</SUB>) production was assessed using a Box-Behnken design (BBD). The BBD model predicted a maximum H<SUB>2</SUB> yield of 87 mL g<SUP>-1</SUP> COD or 98 mL H<SUB>2</SUB> g<SUP>-1</SUP> VS with 1.6 g L<SUP>-1</SUP> LA, an initial pH of 5.93 and an initial COD of 9.34 g COD L<SUP>-1</SUP>. The major microbial populations detected in cultures at pH 5.5 with and without LA included Clostridium sp., Enterococcus asini, Enterococcus faecalis, and Lactobacillus gallinarum. The dendrogram for the 16S rRNA gene T-RFs profiles showed four major groups with a similarity index of 72-75% for Clade III. The major H<SUB>2</SUB>-producing populations were grouped in Clade I with a similarity index range of 55-75%.

2013

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

38

15

pp.6357-6367

10.1016/j.ijhydene.2013.03.003

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65928586

Food and paper-cardboard waste; Hydrogen; Mixed anaerobic culture; Response surface methodology; Municipal solid waste