The fate of carbon in two-stage anaerobic digestion of vegetable waste

P. V. Dinh, T. Fujiwara, H. M. Giang, S. T. Pham Phu

Research output: Contribution to journalConference article

Abstract

This study aims to investigate the fate of carbon in two-stage anaerobic digestion (TAD) of vegetable waste. The TAD including a hydrolytic reactor and a methane reactor were controlled at mesophilic temperature (36 ± 1°C) with a retention time (RT) of 9 days and 20 days, respectively. Carbon tracking was conducted step by step throughout the system. Non-hydrolysable carbon accounted for a significant proportion of total initial carbon (25%). Meanwhile, a large amount of carbon in the feedstock (23.5%) was hydrolysed but remained in the effluent including water and suspended solids. It was mostly inorganic carbon which is not harmful to the environment. The only 41.3% initial carbon was converted to biogas in both reactors. In the hydrolytic reactor, biogas was mainly carbon dioxide (99%), accounted for 11.3% of total biogas and 35.8% of total CO2 product. In the methane reactor, biogas was 373.9 Nml/g-VS including 73.3% CH4, 21.9% CO2 and 4.8% others. Non-hydrolysable materials can be a source of thermal energy. Meanwhile, a large amount of hydrolysed carbon was not converted into biogas, was still in the effluent, it was a significant energy loss. Therefore, how to further increase the effectiveness of TAD is an issue that needs to study.

Original languageEnglish
Article number012019
JournalIOP Conference Series: Earth and Environmental Science
Volume307
Issue number1
DOIs
Publication statusPublished - Aug 2 2019
Event2019 5th International Conference on Environment and Renewable Energy, ICERE 2019 - Ho Chi Minh City, Viet Nam
Duration: Feb 25 2019Feb 28 2019

Fingerprint

biogas
carbon
methane
effluent
inorganic carbon
vegetable waste
anaerobic digestion
energy
carbon dioxide
reactor
temperature
water

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

The fate of carbon in two-stage anaerobic digestion of vegetable waste. / Dinh, P. V.; Fujiwara, T.; Giang, H. M.; Pham Phu, S. T.

In: IOP Conference Series: Earth and Environmental Science, Vol. 307, No. 1, 012019, 02.08.2019.

Research output: Contribution to journalConference article

@article{13310d0ef0fa4710aa959742aaf51bed,
title = "The fate of carbon in two-stage anaerobic digestion of vegetable waste",
abstract = "This study aims to investigate the fate of carbon in two-stage anaerobic digestion (TAD) of vegetable waste. The TAD including a hydrolytic reactor and a methane reactor were controlled at mesophilic temperature (36 ± 1°C) with a retention time (RT) of 9 days and 20 days, respectively. Carbon tracking was conducted step by step throughout the system. Non-hydrolysable carbon accounted for a significant proportion of total initial carbon (25{\%}). Meanwhile, a large amount of carbon in the feedstock (23.5{\%}) was hydrolysed but remained in the effluent including water and suspended solids. It was mostly inorganic carbon which is not harmful to the environment. The only 41.3{\%} initial carbon was converted to biogas in both reactors. In the hydrolytic reactor, biogas was mainly carbon dioxide (99{\%}), accounted for 11.3{\%} of total biogas and 35.8{\%} of total CO2 product. In the methane reactor, biogas was 373.9 Nml/g-VS including 73.3{\%} CH4, 21.9{\%} CO2 and 4.8{\%} others. Non-hydrolysable materials can be a source of thermal energy. Meanwhile, a large amount of hydrolysed carbon was not converted into biogas, was still in the effluent, it was a significant energy loss. Therefore, how to further increase the effectiveness of TAD is an issue that needs to study.",
author = "Dinh, {P. V.} and T. Fujiwara and Giang, {H. M.} and {Pham Phu}, {S. T.}",
year = "2019",
month = "8",
day = "2",
doi = "10.1088/1755-1315/307/1/012019",
language = "English",
volume = "307",
journal = "IOP Conference Series: Earth and Environmental Science",
issn = "1755-1307",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - The fate of carbon in two-stage anaerobic digestion of vegetable waste

AU - Dinh, P. V.

AU - Fujiwara, T.

AU - Giang, H. M.

AU - Pham Phu, S. T.

PY - 2019/8/2

Y1 - 2019/8/2

N2 - This study aims to investigate the fate of carbon in two-stage anaerobic digestion (TAD) of vegetable waste. The TAD including a hydrolytic reactor and a methane reactor were controlled at mesophilic temperature (36 ± 1°C) with a retention time (RT) of 9 days and 20 days, respectively. Carbon tracking was conducted step by step throughout the system. Non-hydrolysable carbon accounted for a significant proportion of total initial carbon (25%). Meanwhile, a large amount of carbon in the feedstock (23.5%) was hydrolysed but remained in the effluent including water and suspended solids. It was mostly inorganic carbon which is not harmful to the environment. The only 41.3% initial carbon was converted to biogas in both reactors. In the hydrolytic reactor, biogas was mainly carbon dioxide (99%), accounted for 11.3% of total biogas and 35.8% of total CO2 product. In the methane reactor, biogas was 373.9 Nml/g-VS including 73.3% CH4, 21.9% CO2 and 4.8% others. Non-hydrolysable materials can be a source of thermal energy. Meanwhile, a large amount of hydrolysed carbon was not converted into biogas, was still in the effluent, it was a significant energy loss. Therefore, how to further increase the effectiveness of TAD is an issue that needs to study.

AB - This study aims to investigate the fate of carbon in two-stage anaerobic digestion (TAD) of vegetable waste. The TAD including a hydrolytic reactor and a methane reactor were controlled at mesophilic temperature (36 ± 1°C) with a retention time (RT) of 9 days and 20 days, respectively. Carbon tracking was conducted step by step throughout the system. Non-hydrolysable carbon accounted for a significant proportion of total initial carbon (25%). Meanwhile, a large amount of carbon in the feedstock (23.5%) was hydrolysed but remained in the effluent including water and suspended solids. It was mostly inorganic carbon which is not harmful to the environment. The only 41.3% initial carbon was converted to biogas in both reactors. In the hydrolytic reactor, biogas was mainly carbon dioxide (99%), accounted for 11.3% of total biogas and 35.8% of total CO2 product. In the methane reactor, biogas was 373.9 Nml/g-VS including 73.3% CH4, 21.9% CO2 and 4.8% others. Non-hydrolysable materials can be a source of thermal energy. Meanwhile, a large amount of hydrolysed carbon was not converted into biogas, was still in the effluent, it was a significant energy loss. Therefore, how to further increase the effectiveness of TAD is an issue that needs to study.

UR - http://www.scopus.com/inward/record.url?scp=85070694397&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85070694397&partnerID=8YFLogxK

U2 - 10.1088/1755-1315/307/1/012019

DO - 10.1088/1755-1315/307/1/012019

M3 - Conference article

AN - SCOPUS:85070694397

VL - 307

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

SN - 1755-1307

IS - 1

M1 - 012019

ER -