Attachment of anaerobic ammonium-oxidizing bacteria to augmented carrier material
| Autor: | Maciej S. Kowalski, Jan A. Oleszkiewicz, Tanner R. Devlin |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nitrogen
0208 environmental biotechnology Heterotroph chemistry.chemical_element Biomass 02 engineering and technology 010501 environmental sciences engineering.material 01 natural sciences Bacteria Anaerobic chemistry.chemical_compound Bioreactors Ammonium Compounds Oxidizing agent Environmental Chemistry Ammonium Anaerobiosis Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Primer (paint) Sewage Biofilm Environmental engineering General Medicine 020801 environmental engineering chemistry Chemical engineering Anammox engineering Oxidation-Reduction Carbon |
| Zdroj: | Environmental Technology. 40:576-583 |
| ISSN: | 1479-487X 0959-3330 |
| DOI: | 10.1080/09593330.2017.1397770 |
| Popis: | The formation of stable and highly active anammox biofilm is a lengthy process leading to long start-up times of deammonifying reactors of several months or more. This study aims to provide a quick solution to the problem of long start-up periods by pretreating the surface of carrier material. Two different techniques were investigated. The first one focused on growing a layer of heterotrophic biofilm on the surface of the plastic carriers prior to inoculation with anammox biomass. Specific anammox activity increased by almost 400% as compared to seed values and was equal to 250 mg NH4-N/gVSS/L•d. In the second technique, the carrier material was coated with a layer of granular-activated carbon to provide a higher surface area. The anammox activity increased by approximately 50%. In comparison, the control reactor did not develop any biofilm and no anammox activity was detected. Rapid attachment of the anammox biomass was achieved in a reactor with media that had a predeveloped layer of a biofilm. In a way, this approach is analogous to a primer or an undercoat that is put on materials before painting to ensure better adhesion of paint to the surface, hence the suggested name - bioprimer. |
| Databáze: | OpenAIRE |
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