Synthesis and performance of iron oxide-based porous ceramsite in a biological aerated filter for the simultaneous removal of nitrogen and phosphorus from domestic wastewater
Bao, Teng, Chen, Tianhu, Tan, Juan, Wille, Marie-Luise, Zhu, Dan, Chen, Dong, & Xi, Yunfei (2016) Synthesis and performance of iron oxide-based porous ceramsite in a biological aerated filter for the simultaneous removal of nitrogen and phosphorus from domestic wastewater. Separation and Purification Technology, 167, pp. 154-162.
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A novel iron oxide-based porous ceramsite (IPC) was synthesized and applied as a microbial biofilm carrier in a biological aerated filter (BAF) to treat domestic wastewater and compared to commercially available ceramsite (CAC). The results indicate that IPC has a higher porosity in comparison to CAC. The uniformity and interconnectivity of pores, as well as the rough surface of the IPC are suitable for microbial biofilm growth. Biofilm growth occurs in the internal pores of the media and promotes nitrogen and phosphorus removal. The effect of air-water ratio (A/W) on the removal of total organic carbon, ammonia nitrogen, total nitrogen, and phosphorus were investigated. The results show that the performance of IPC BAF is much better than CAC BAF. For instance, at an A/W ratio of 3:1, the total nitrogen removal was 46.26% with IPC and 15.64% with CAC, and the PO43- removal was 72.25% with IPC compared with only 33.97% with CAC. An analysis of the microbial community in the IPC BAFs by polymerase chain reaction denaturing gradient gel electrophoresis identified Dechloromonas sp., Sphaerotilus sp., and Nitrospira sp. microbes. The diversity on microbial population, along with the attached growth benefit from the morphological properties of IPC, allows enhancement in the simultaneous nitrification and denitrification performance in IPC BAF. Hence, IPC can be considered a very effective novel media material in BAF for the simultaneous removal of nitrogen and phosphorus.
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|Item Type:||Journal Article|
|Keywords:||Iron oxide-based porous ceramsite, nitrogen and phosphorus removal, nitrification, denitrification, biological aerated filters|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)
Australian and New Zealand Standard Research Classification > ENVIRONMENTAL SCIENCES (050000)
|Divisions:||Current > Institutes > Institute for Future Environments
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Facilities:||Central Analytical Research Facility|
|Copyright Owner:||Copyright 2016 Elsevier|
|Copyright Statement:||Licensed under the Creative Commons Attribution; Non-Commercial; No-Derivatives 4.0 International. DOI 10.1016/j.seppur.2016.05.011|
|Deposited On:||25 Aug 2016 03:08|
|Last Modified:||29 Aug 2016 16:32|
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