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...

Full description

Bibliographic Details
Main Authors: Nik Azimatolakma Awang, Md Ghazaly Shaaban, Lee, Choon Weng, Bong, Chui Wei
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11719/
http://journalarticle.ukm.my/11719/
http://journalarticle.ukm.my/11719/1/27%20Nik%20Azima%20Tolakma.pdf
id ukm-11719
recordtype eprints
spelling ukm-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
repository_type Digital Repository
institution_category Local University
institution Universiti Kebangasaan Malaysia
building UKM Institutional Repository
collection Online Access
language English
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.
format Article
author Nik Azimatolakma Awang,
Md Ghazaly Shaaban,
Lee, Choon Weng
Bong, Chui Wei
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
author_facet Nik Azimatolakma Awang,
Md Ghazaly Shaaban,
Lee, Choon Weng
Bong, Chui Wei
author_sort Nik Azimatolakma Awang,
title 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_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_sort characterization of aerobic granular sludge developed under variable and low organic loading rate
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11719/
http://journalarticle.ukm.my/11719/
http://journalarticle.ukm.my/11719/1/27%20Nik%20Azima%20Tolakma.pdf
first_indexed 2023-09-18T20:00:59Z
last_indexed 2023-09-18T20:00:59Z
_version_ 1777406846495096832