Biogenic hydrogen conversion of de-oiled jatropha waste via anaerobic sequencing batch reactor operation: Process performance, microbial insights, and CO 2 reduction efficiency

Gopalakrishnan Kumar, Chiu Yue Lin

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We report the semicontinuous, direct (anaerobic sequencing batch reactor operation) hydrogen fermentation of de-oiled jatropha waste (DJW). The effect of hydraulic retention time (HRT) was studied and results show that the stable and peak hydrogen production rate of 1.48 L/Ld and hydrogen yield of 8.7 mL Hg volatile solid added were attained when the reactor was operated at HRT 2 days (d) with a DJW concentration of 200 g/L, temperature 55°C, and pH 6.5. Reduced HRT enhanced the production performance until 1.75 d. Further reduction has lowered the process efficiency in terms of biogas production and hydrogen gas content. The effluent from hydrogen fermentor was utilized for methane fermentation in batch reactors using pig slurry and cow dung as seed sources. The results revealed that pig slurry was a feasible seed source for methane generation. Peak methane production rate of 0.43 L CHLd and methane yield of 20.5 mL CHg COD were observed at substrate concentration of 10 g COD/L, temperature 30°C, and pH 7.0. PCR-DGGE analysis revealed that combination of celluloytic and fermentative bacteria were present in the hydrogen producing ASBR.

Original languageEnglish
Article number946503
JournalThe Scientific World Journal
Volume2014
DOIs
Publication statusPublished - 2014 Mar 6

Fingerprint

Jatropha
Reactor operation
Batch reactors
Carbon Monoxide
Methane
Hydrogen
hydrogen
methane
Hydraulics
Fermentation
Seed
hydraulics
pig
slurry
fermentation
Seeds
Swine
Biofuels
seed
Hydrogen production

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)

Cite this

@article{32729fb81d54491c8682816e8c8a2714,
title = "Biogenic hydrogen conversion of de-oiled jatropha waste via anaerobic sequencing batch reactor operation: Process performance, microbial insights, and CO 2 reduction efficiency",
abstract = "We report the semicontinuous, direct (anaerobic sequencing batch reactor operation) hydrogen fermentation of de-oiled jatropha waste (DJW). The effect of hydraulic retention time (HRT) was studied and results show that the stable and peak hydrogen production rate of 1.48 L/Ld and hydrogen yield of 8.7 mL Hg volatile solid added were attained when the reactor was operated at HRT 2 days (d) with a DJW concentration of 200 g/L, temperature 55°C, and pH 6.5. Reduced HRT enhanced the production performance until 1.75 d. Further reduction has lowered the process efficiency in terms of biogas production and hydrogen gas content. The effluent from hydrogen fermentor was utilized for methane fermentation in batch reactors using pig slurry and cow dung as seed sources. The results revealed that pig slurry was a feasible seed source for methane generation. Peak methane production rate of 0.43 L CHLd and methane yield of 20.5 mL CHg COD were observed at substrate concentration of 10 g COD/L, temperature 30°C, and pH 7.0. PCR-DGGE analysis revealed that combination of celluloytic and fermentative bacteria were present in the hydrogen producing ASBR.",
author = "Gopalakrishnan Kumar and Lin, {Chiu Yue}",
year = "2014",
month = "3",
day = "6",
doi = "10.1155/2014/946503",
language = "English",
volume = "2014",
journal = "The Scientific World Journal",
issn = "2356-6140",
publisher = "Hindawi Publishing Corporation",

}

TY - JOUR

T1 - Biogenic hydrogen conversion of de-oiled jatropha waste via anaerobic sequencing batch reactor operation

T2 - Process performance, microbial insights, and CO 2 reduction efficiency

AU - Kumar, Gopalakrishnan

AU - Lin, Chiu Yue

PY - 2014/3/6

Y1 - 2014/3/6

N2 - We report the semicontinuous, direct (anaerobic sequencing batch reactor operation) hydrogen fermentation of de-oiled jatropha waste (DJW). The effect of hydraulic retention time (HRT) was studied and results show that the stable and peak hydrogen production rate of 1.48 L/Ld and hydrogen yield of 8.7 mL Hg volatile solid added were attained when the reactor was operated at HRT 2 days (d) with a DJW concentration of 200 g/L, temperature 55°C, and pH 6.5. Reduced HRT enhanced the production performance until 1.75 d. Further reduction has lowered the process efficiency in terms of biogas production and hydrogen gas content. The effluent from hydrogen fermentor was utilized for methane fermentation in batch reactors using pig slurry and cow dung as seed sources. The results revealed that pig slurry was a feasible seed source for methane generation. Peak methane production rate of 0.43 L CHLd and methane yield of 20.5 mL CHg COD were observed at substrate concentration of 10 g COD/L, temperature 30°C, and pH 7.0. PCR-DGGE analysis revealed that combination of celluloytic and fermentative bacteria were present in the hydrogen producing ASBR.

AB - We report the semicontinuous, direct (anaerobic sequencing batch reactor operation) hydrogen fermentation of de-oiled jatropha waste (DJW). The effect of hydraulic retention time (HRT) was studied and results show that the stable and peak hydrogen production rate of 1.48 L/Ld and hydrogen yield of 8.7 mL Hg volatile solid added were attained when the reactor was operated at HRT 2 days (d) with a DJW concentration of 200 g/L, temperature 55°C, and pH 6.5. Reduced HRT enhanced the production performance until 1.75 d. Further reduction has lowered the process efficiency in terms of biogas production and hydrogen gas content. The effluent from hydrogen fermentor was utilized for methane fermentation in batch reactors using pig slurry and cow dung as seed sources. The results revealed that pig slurry was a feasible seed source for methane generation. Peak methane production rate of 0.43 L CHLd and methane yield of 20.5 mL CHg COD were observed at substrate concentration of 10 g COD/L, temperature 30°C, and pH 7.0. PCR-DGGE analysis revealed that combination of celluloytic and fermentative bacteria were present in the hydrogen producing ASBR.

UR - http://www.scopus.com/inward/record.url?scp=84896826141&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896826141&partnerID=8YFLogxK

U2 - 10.1155/2014/946503

DO - 10.1155/2014/946503

M3 - Article

C2 - 24672398

AN - SCOPUS:84896826141

VL - 2014

JO - The Scientific World Journal

JF - The Scientific World Journal

SN - 2356-6140

M1 - 946503

ER -