Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration

Effects of microaeration on the anaerobic digestion of cassava wastewater with added cassava residue in the continuous stirred tank reactor (CSTR) system were studied. The CSTR system was operated at ambient temperature. The biogas was analysed for the production rate and compositions by a gas meter...

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Main Authors: O. Khongsumran, P. Intanoo, P. Rangsunvigit, S. Chavadej, M. Leethochawalit
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2014-08-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/5394
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spelling doaj-033d261cd7e548b1aaed979447275e9b2021-02-21T20:59:10ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162014-08-013910.3303/CET1439093Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by MicroaerationO. KhongsumranP. IntanooP. RangsunvigitS. ChavadejM. LeethochawalitEffects of microaeration on the anaerobic digestion of cassava wastewater with added cassava residue in the continuous stirred tank reactor (CSTR) system were studied. The CSTR system was operated at ambient temperature. The biogas was analysed for the production rate and compositions by a gas meter and gas chromatography (GC), respectively. In addition, the overflown liquid effluent was collected and analysed for chemical characteristics. Operating parameters were varied to achieve the optimum chemical oxygen demand (COD) loading rate, the maximum content of added cassava residue, and the optimum oxygen dosing on the degradation of the cellulosic fraction. The COD loading rate was varied from 0.604to 2.500 kg/m3 d to determine the optimum COD loading rate without oxygen supply. The results showedthat with the optimum COD loading rate of 1.710 kg/m3 d, the generated gas mainly composed of 74.42 % CH4 and 18.43 % CO2 with negligible amounts of nitrogen and oxygen. The addition of a small amount of oxygen played an important role in the methane production.https://www.cetjournal.it/index.php/cet/article/view/5394
collection DOAJ
language English
format Article
sources DOAJ
author O. Khongsumran
P. Intanoo
P. Rangsunvigit
S. Chavadej
M. Leethochawalit
spellingShingle O. Khongsumran
P. Intanoo
P. Rangsunvigit
S. Chavadej
M. Leethochawalit
Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration
Chemical Engineering Transactions
author_facet O. Khongsumran
P. Intanoo
P. Rangsunvigit
S. Chavadej
M. Leethochawalit
author_sort O. Khongsumran
title Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration
title_short Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration
title_full Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration
title_fullStr Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration
title_full_unstemmed Enhancement of Anaerobic Digestion of Cellulosic Fraction in Cassava Production Wastewater by Microaeration
title_sort enhancement of anaerobic digestion of cellulosic fraction in cassava production wastewater by microaeration
publisher AIDIC Servizi S.r.l.
series Chemical Engineering Transactions
issn 2283-9216
publishDate 2014-08-01
description Effects of microaeration on the anaerobic digestion of cassava wastewater with added cassava residue in the continuous stirred tank reactor (CSTR) system were studied. The CSTR system was operated at ambient temperature. The biogas was analysed for the production rate and compositions by a gas meter and gas chromatography (GC), respectively. In addition, the overflown liquid effluent was collected and analysed for chemical characteristics. Operating parameters were varied to achieve the optimum chemical oxygen demand (COD) loading rate, the maximum content of added cassava residue, and the optimum oxygen dosing on the degradation of the cellulosic fraction. The COD loading rate was varied from 0.604to 2.500 kg/m3 d to determine the optimum COD loading rate without oxygen supply. The results showedthat with the optimum COD loading rate of 1.710 kg/m3 d, the generated gas mainly composed of 74.42 % CH4 and 18.43 % CO2 with negligible amounts of nitrogen and oxygen. The addition of a small amount of oxygen played an important role in the methane production.
url https://www.cetjournal.it/index.php/cet/article/view/5394
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