Effect of phosphorylated polyvinyl alcohol matrix size of cell entrapment on partial nitrification of ammonia in wastewater
Issued Date
2022-01-01
Resource Type
ISSN
09593330
eISSN
1479487X
Scopus ID
2-s2.0-85131321135
Pubmed ID
35549830
Journal Title
Environmental Technology (United Kingdom)
Rights Holder(s)
SCOPUS
Bibliographic Citation
Environmental Technology (United Kingdom) (2022)
Suggested Citation
Bootrak D., Rongsayamanont W., Jaidumrong T., Rongsayamanont C. Effect of phosphorylated polyvinyl alcohol matrix size of cell entrapment on partial nitrification of ammonia in wastewater. Environmental Technology (United Kingdom) (2022). doi:10.1080/09593330.2022.2078231 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/84749
Title
Effect of phosphorylated polyvinyl alcohol matrix size of cell entrapment on partial nitrification of ammonia in wastewater
Other Contributor(s)
Abstract
Partial nitrification is known as first and critical step for autotrophic nitrogen removal in high strength nitrogenous wastewater. Phosphorylated polyvinyl alcohol gel entrapment was used for suppressing oxygen to nitrite-oxidizing bacteria (NOB) in the gel matrix. The study investigated the effect of the size of gel matrix on partial nitrification. Results show that ammonia-oxidizing bacteria (AOB) proportion in the inoculum rather than the size of gel matrix governed ammonia oxidation. Nitrite oxidation depended on the size of gel matrix not the relative proportions of NOB and AOB in the inoculum. Larger size of gel matrix lead to less in situ oxygen penetration and available for NOB resulting in higher nitrite accumulation. This finding gains a better understanding of using suitable inoculum to control partial nitrification that is beneficial for the preparation of anaerobic ammonium oxidation-suited effluent.