Quantitative analyses of the composition and abundance of ammonia-oxidizing archaea and ammonia-oxidizing bacteria in eight full-scale biological wastewater treatment plants.

Abstract excerpt

This study investigated the diversity and abundance of AOA and AOB amoA genes in eight full-scale wastewater treatment plants (WWTPs). Although the process principles and system operations of the eight WWTPs were different, quantitative real-time PCR measurements showed that AOB amoA genes outnumbered AOA amoA genes with the ratio varying from 2.56 to 2.41×10(3), and ammonia may be partially oxidized by AOA....

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