Abundance of amoA genes of ammonia-oxidizing archaea and bacteria in activated sludge of full-scale wastewater treatment plants.

Abstract:

:In this study, the abundance and sequences of amoA genes of ammonia-oxidizing archaea (AOA) and bacteria (AOB) were determined in seven wastewater treatment plants (WWTPs) whose ammonium concentrations in influent and effluent wastewaters varied considerably (5.6-422.3 mgN l(-1) and 0.2-29.2 mgN l(-1), respectively). Quantitative real-time PCR showed that the comparative abundance of AOA and AOB amoA genes differed among the WWTPs. In all three industrial WWTPs, where the influent and effluent contained the higher levels of ammonium (36.1-422.3 mgN l(-1) and 5.3-29.2 mgN l(-1), respectively), more than four orders of magnitude higher numbers of AOB amoA genes than AOA amoA genes arose (with less than the limit of detection of AOA amoA genes). In contrast, significant numbers of AOA amoA genes occurred in all municipal WWTPs (with ammonium levels in the influent and effluent of 5.6-11.0 mgN l(-1) and 0.2-3.0 mgN l(-1), respectively). Statistical analysis suggested that compared to other plants' parameters, the ammonium levels in the plants' effluent showed correlation with the highest p value to the abundance of AOA amoA genes.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Limpiyakorn T,Sonthiphand P,Rongsayamanont C,Polprasert C

doi

10.1016/j.biortech.2010.11.085

subject

Has Abstract

pub_date

2011-02-01 00:00:00

pages

3694-701

issue

4

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(10)01888-2

journal_volume

102

pub_type

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