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Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production

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Main Authors: Nabilah Aminah, Lutpi, Jamaliah, Md Jahim, Tabassum, Mumtaz, Peer Mohamed, Abdul, Mohd Tusirin, Mohd Nor
Other Authors: nabilah@unimap.edu.my
Format: Article
Language:English
Published: Royal Society of Chemistry 2016
Subjects:
Activated carbon
Biofilms
Butyric acid
Carbon
Granular materials
Metabolites
Palm oil
Scanning electron microscopy
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41256
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spelling my.unimap-412562016-04-05T02:39:39Z Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production Nabilah Aminah, Lutpi Jamaliah, Md Jahim Tabassum, Mumtaz Peer Mohamed, Abdul Mohd Tusirin, Mohd Nor nabilah@unimap.edu.my jamal@eng.ukm.my Activated carbon Biofilms Butyric acid Carbon Granular materials Metabolites Palm oil Scanning electron microscopy Link to publisher's homepage at http://pubs.rsc.org/ In this study, thermophilic biohydrogen production by a mixed culture, obtained from a continuous acidogenic reactor treating palm oil mill effluent, was improved by using granular activated carbon (GAC) as the support material. Batch experiments were carried out at 60 °C by feeding the anaerobic sludge bacteria with a sucrose-containing synthetic medium at an initial pH of 5.5 under anoxic conditions. The physico-chemical characteristics of the attached biofilm were evaluated after extraction of the extracellular polymeric substances (EPSs) of the biofilm using the formaldehyde-NaOH method. The main component of the biofilm was protein (60%), while the carbohydrate content accounted for 40% of the EPS. Two major absorption bands at approximately 3400 cm-1 and 1650 cm-1, characteristics of the stretching vibrations of hydroxyl and amino groups, respectively, were identified in the FT-IR spectra, confirming the composition of the EPS. Observations using scanning electron microscopy (SEM) illustrated the attachment of rod-shaped bacterial cells on the GAC at 60 °C. A maximum hydrogen production rate of 4.3 mmol L-1 h-1 and a hydrogen yield of 5.6 mol H2 per mol sucrose were obtained from this attached biofilm system. The major soluble metabolites of fermentation were acetic acid and butyric acid. The results showed that the granular activated carbon enhanced the biohydrogen production by stabilizing the pH and microbial metabolites and therefore could be used as a support material for fermentative hydrogen production under thermophilic conditions on a large scale. 2016-04-05T02:39:39Z 2016-04-05T02:39:39Z 2015 Article RSC Advances, vol. 5 (25), 2015, pages 19382-19392 2046-2069 http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41256 10.1039/C4RA12730G en Royal Society of Chemistry
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Activated carbon
Biofilms
Butyric acid
Carbon
Granular materials
Metabolites
Palm oil
Scanning electron microscopy
spellingShingle Activated carbon
Biofilms
Butyric acid
Carbon
Granular materials
Metabolites
Palm oil
Scanning electron microscopy
Nabilah Aminah, Lutpi
Jamaliah, Md Jahim
Tabassum, Mumtaz
Peer Mohamed, Abdul
Mohd Tusirin, Mohd Nor
Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
description Link to publisher's homepage at http://pubs.rsc.org/
author2 nabilah@unimap.edu.my
author_facet nabilah@unimap.edu.my
Nabilah Aminah, Lutpi
Jamaliah, Md Jahim
Tabassum, Mumtaz
Peer Mohamed, Abdul
Mohd Tusirin, Mohd Nor
format Article
author Nabilah Aminah, Lutpi
Jamaliah, Md Jahim
Tabassum, Mumtaz
Peer Mohamed, Abdul
Mohd Tusirin, Mohd Nor
author_sort Nabilah Aminah, Lutpi
title Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
title_short Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
title_full Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
title_fullStr Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
title_full_unstemmed Physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
title_sort physicochemical characteristics of attached biofilm on granular activated carbon for thermophilic biohydrogen production
publisher Royal Society of Chemistry
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41256
_version_ 1643799624980365312
score 13.214268

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