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A proposed aerobic granules size development scheme for aerobic granulation process.

Authors
  • Dahalan, Farrah Aini
  • Abdullah, Norhayati
  • Yuzir, Ali
  • Olsson, Gustaf
  • Hamdzah, Myzairah
  • Din, Mohd Fadhil Mohd
  • Ahmad, Siti Aqlima
  • Khalil, Khalilah Abdul
  • Anuar, Aznah Nor
  • Noor, Zainura Zainon
  • Ujang, Zaini
Type
Published Article
Journal
Bioresource Technology
Publisher
Elsevier
Publication Date
Apr 01, 2015
Volume
181
Pages
291–296
Identifiers
DOI: 10.1016/j.biortech.2015.01.062
PMID: 25661308
Source
Medline
Keywords
License
Unknown

Abstract

Aerobic granulation is increasingly used in wastewater treatment due to its unique physical properties and microbial functionalities. Granule size defines the physical properties of granules based on biomass accumulation. This study aims to determine the profile of size development under two physicochemical conditions. Two identical bioreactors namely Rnp and Rp were operated under non-phototrophic and phototrophic conditions, respectively. An illustrative scheme was developed to comprehend the mechanism of size development that delineates the granular size throughout the granulation. Observations on granules' size variation have shown that activated sludge revolutionised into the form of aerobic granules through the increase of biomass concentration in bioreactors which also determined the changes of granule size. Both reactors demonstrated that size transformed in a similar trend when tested with and without illumination. Thus, different types of aerobic granules may increase in size in the same way as recommended in the aerobic granule size development scheme.

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