Characterization of aerobic granular sludge developed under variable and low organic loading rate
Understanding the formation of aerobic granules sludge (AGS) under the variations of organic loading rate (OLR) could give a different insight on AGS stability, which had become the bottleneck for practical application in sewage treatment. This study demonstrates the formation of AGS that had previo...
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| Format: | Article |
| Language: | English |
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Penerbit Universiti Kebangsaan Malaysia
2017
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| Online Access: | http://journalarticle.ukm.my/11719/ http://journalarticle.ukm.my/11719/1/27%20Nik%20Azima%20Tolakma.pdf |
| _version_ | 1848812807793934336 |
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| author | Nik Azimatolakma Awang, Md Ghazaly Shaaban, Lee, Choon Weng Bong, Chui Wei |
| author_facet | Nik Azimatolakma Awang, Md Ghazaly Shaaban, Lee, Choon Weng Bong, Chui Wei |
| author_sort | Nik Azimatolakma Awang, |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | Understanding the formation of aerobic granules sludge (AGS) under the variations of organic loading rate (OLR) could give a different insight on AGS stability, which had become the bottleneck for practical application in sewage treatment. This study demonstrates the formation of AGS that had previously been stored for eight months at 5ºC in sequencing batch reactor (SBR) with sewage as substrate. Despite being redeveloped under variable OLR of 0.26 to 0.81 kg CODs/m3 d and low superficial air velocity (SAV) of 1.33 cm/s, the loose structure of AGS during storage can be recovered within 46 days of formation process. Variations in OLR intrude the formation process particularly during low OLR, resulting in longer period to achieve mature AGS or full granulation of biomass in reactor. The next-generation sequencing (NGS) analysis indicated that the shift in microbial community from Rhodocyclaceae to Comamonadaceae class for denitrification process was accommodated with the changes in the AGS size from 326 μm to more than 600 μm. |
| first_indexed | 2025-11-15T00:08:10Z |
| format | Article |
| id | oai:generic.eprints.org:11719 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:08:10Z |
| publishDate | 2017 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:117192018-05-30T00:30:08Z http://journalarticle.ukm.my/11719/ Characterization of aerobic granular sludge developed under variable and low organic loading rate Nik Azimatolakma Awang, Md Ghazaly Shaaban, Lee, Choon Weng Bong, Chui Wei Understanding the formation of aerobic granules sludge (AGS) under the variations of organic loading rate (OLR) could give a different insight on AGS stability, which had become the bottleneck for practical application in sewage treatment. This study demonstrates the formation of AGS that had previously been stored for eight months at 5ºC in sequencing batch reactor (SBR) with sewage as substrate. Despite being redeveloped under variable OLR of 0.26 to 0.81 kg CODs/m3 d and low superficial air velocity (SAV) of 1.33 cm/s, the loose structure of AGS during storage can be recovered within 46 days of formation process. Variations in OLR intrude the formation process particularly during low OLR, resulting in longer period to achieve mature AGS or full granulation of biomass in reactor. The next-generation sequencing (NGS) analysis indicated that the shift in microbial community from Rhodocyclaceae to Comamonadaceae class for denitrification process was accommodated with the changes in the AGS size from 326 μm to more than 600 μm. Penerbit Universiti Kebangsaan Malaysia 2017-12 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11719/1/27%20Nik%20Azima%20Tolakma.pdf Nik Azimatolakma Awang, and Md Ghazaly Shaaban, and Lee, Choon Weng and Bong, Chui Wei (2017) Characterization of aerobic granular sludge developed under variable and low organic loading rate. Sains Malaysiana, 46 (12). pp. 2497-2506. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num12_2017/contentsVol46num12_2017.htm |
| spellingShingle | Nik Azimatolakma Awang, Md Ghazaly Shaaban, Lee, Choon Weng Bong, Chui Wei Characterization of aerobic granular sludge developed under variable and low organic loading rate |
| title | Characterization of aerobic granular sludge developed under
variable and low organic loading rate |
| title_full | Characterization of aerobic granular sludge developed under
variable and low organic loading rate |
| title_fullStr | Characterization of aerobic granular sludge developed under
variable and low organic loading rate |
| title_full_unstemmed | Characterization of aerobic granular sludge developed under
variable and low organic loading rate |
| title_short | Characterization of aerobic granular sludge developed under
variable and low organic loading rate |
| title_sort | characterization of aerobic granular sludge developed under
variable and low organic loading rate |
| url | http://journalarticle.ukm.my/11719/ http://journalarticle.ukm.my/11719/ http://journalarticle.ukm.my/11719/1/27%20Nik%20Azima%20Tolakma.pdf |