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Hydrogen and methane production from...

Yang, Peilin.

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Hydrogen and methane production from food wastes by anaerobic fermentation using mixed microbial cultures.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Hydrogen and methane production from food wastes by anaerobic fermentation using mixed microbial cultures./
Author:	Yang, Peilin.
Description:	180 p.
Notes:	Adviser: Ruihong Zhang.
Contained By:	Dissertation Abstracts International67-09B.
Subject:	Engineering, Agricultural. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3230710
ISBN:	9780542845536

Hydrogen and methane production from food wastes by anaerobic fermentation using mixed microbial cultures.
Yang, Peilin.

Hydrogen and methane production from food wastes by anaerobic fermentation using mixed microbial cultures. - 180 p.

Adviser: Ruihong Zhang.

Thesis (Ph.D.)--University of California, Davis, 2006.

Hydrogen (H2) and methane (CH4) production from food waste and cheese processing wastewater via anaerobic fermentation were conducted using mixed microbial cultures under mesophilic conditions. Batch H2 fermentation studies from the food waste showed that a H2 yield of 5.8 mM/g-VS-fed was achieved at food to microorganism ratio (F/M) of 1.0, while H2 fermentation from the cheese processing wastewater showed that a H2 yield of 8 and 10 mM/g-COD fed, respectively, at the F/M of 1.0 and 1.5. Butyric, acetic, propionic, and valeric acids were the major volatile fatty acids produced in the fermentation process of both substrates.

ISBN: 9780542845536Subjects--Topical Terms:

1019504
Engineering, Agricultural.

Hydrogen and methane production from food wastes by anaerobic fermentation using mixed microbial cultures.
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020 $a 9780542845536
035 $a (UMI)AAI3230710
035 $a AAI3230710
040 $a UMI $c UMI
100 1 $a Yang, Peilin. $3 1263304
245 1 0 $a Hydrogen and methane production from food wastes by anaerobic fermentation using mixed microbial cultures.
300 $a 180 p.
500 $a Adviser: Ruihong Zhang.
500 $a Source: Dissertation Abstracts International, Volume: 67-09, Section: B, page: 5226.
502 $a Thesis (Ph.D.)--University of California, Davis, 2006.
520 $a Hydrogen (H2) and methane (CH4) production from food waste and cheese processing wastewater via anaerobic fermentation were conducted using mixed microbial cultures under mesophilic conditions. Batch H2 fermentation studies from the food waste showed that a H2 yield of 5.8 mM/g-VS-fed was achieved at food to microorganism ratio (F/M) of 1.0, while H2 fermentation from the cheese processing wastewater showed that a H2 yield of 8 and 10 mM/g-COD fed, respectively, at the F/M of 1.0 and 1.5. Butyric, acetic, propionic, and valeric acids were the major volatile fatty acids produced in the fermentation process of both substrates.
520 $a The continuous H2 fermentation of the cheese whey wastewater was studied using a completely mixed reactor. The pH of the reactor was controlled in a range of 4.0 to 5.0 by adding alkalinity. The maximum H2 yield was between 2.0 and 2.3 mM/g-COD-fed for loading rates tested when the HRT of the H2 reactor was 24 hrs. It was found that CH4 was present in the biogas at various levels even at a low pH. The biogas production and H2 content of the biogas for each loading rate varied largely over time, but continuous H2 production was achieved for two to three weeks at each loading rate. Based on bacterial analysis on selected samples from the reactors fed with cheese whey wastewater, more than 50% of the bacteria detected were lactobacillus and about 5% of the isolates were Clostridia when the reactor was able to produce a good amount of H2. When the reactor did not produce a good amount of H2, there was about three fold lower number of Lactobacillus than when the reactor had good H2.
520 $a The H2 reactor effluent was treated with an anaerobic sequencing batch reactor (ASBR). At the loading rate of 0.54 to 2.15 g-COD/L/d, a CH 4 yield of 0.253 to 0.304 L/g-COD-fed was obtained. For a steady-state operation of the ASBR, it was necessary to add Ca(OH)2 in the substrate in order to keep a desired pH level (around 7.0) to ensure healthy growth of methanogens. The highest COD and VFA removals achieved in the ASBR were 94% and 98% at 0.54 g-COD/L/d, respectively.
590 $a School code: 0029.
650 4 $a Engineering, Agricultural. $3 1019504
650 4 $a Engineering, Environmental. $3 783782
690 $a 0539
690 $a 0775
710 2 $a University of California, Davis. $3 1018682
773 0 $t Dissertation Abstracts International $g 67-09B.
790 $a 0029
790 1 0 $a Zhang, Ruihong, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3230710