Determination of anaerobic ammonium oxidation (anammox) bacteria in the domestic wastewater

Arumugham, Thilagavathi; Husaini, Nur’ Amirah; Abdullah, Norhayati; Koji, Iwamoto

doi:10.5004/dwt.2021.26733

Cited by 2 publications

(1 citation statement)

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“…The growth temperature preferred by the K. stuttgartiensis bacterium is between 25 to 37 °C, whilst the optimum temperature is 37 °C [48][49]. Additionally, in a study Arumugham et al, [50] succeeded in determining the K. stuttgartiensis bacterium at the temperature range of 29.6 to 32.0°C at the domestic wastewater treatment plant. This indicates that the K. stuttgartiensis bacteria is able to survive below the optimum temperature within the open wastewater treatment system.…”

Section: Temperaturementioning

confidence: 99%

Anammox bacterium ‘Candidatus Kuenenia stuttgartiensis’: a review

Arumugham

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Anaerobic ammonium oxidation (Anammox) process is a type of biological nitrogen removal technology which is known to directly convert ammonium and nitrite to nitrogen gas. The freshwater ‘Candidatus Kuenenia stuttgartiensis’ anammox under the phylum of Planctomycetes is used to study the parameters that affect the anammox development and the metabolic pathways alongside the associated enzymes. These observations were made using state-of-the art techniques for detecting anammox bacteria based on their small-subunit ribosomal RNA genes, functional genes and unique reaction pathways. This review systematically summarizes up-to-date studies on the parameters affecting the growth of the anammox bacteria and metabolic networks driving anammox bacterial anabolism and mixotrophy beyond genome-based predictions. The K. stuttgartiensis survives in summer and winter conditions besides in the aerobic zones (dissolved oxygen >2 mg/L), which consequently contribute to better nitrogen removal in the wastewater treatment. Furthermore, the K. stuttgartiensis utilizes the Wood–Ljungdahl pathway to directly assimilate extracellular formation instead of oxidising it completely to CO2 prior reassimilation.

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Section: Temperaturementioning

confidence: 99%