Sewage Sludge Microbial Structures and Relations to Their Sources, Treatments, and Chemical Attributes

Frontiers in Microbiology
Altina Lacerda NascimentoJussara Borges Regitano

Abstract

Sewage sludges generation and their disposal have become one of the greatest challenges of the 21st century. They have great microbial diversity that may impact wastewater treatment plant (WWTP) efficiency and soil quality whether used as fertilizers. Therefore, this research aimed to characterize microbial community diversity and structure of 19 sewage sludges from São Paulo, Brazil, as well as to draw their relations to sludge sources [domestic and mixed (domestic+industrial)], biological treatments (redox conditions and liming), and chemical attributes, using molecular biology as a tool. All sludges revealed high bacterial diversity, but their sources and redox operating conditions as well as liming did not consistently affect bacterial community structures. Proteobacteria was the dominant phylum followed by Bacteroidetes and Firmicutes; whereas Clostridium was the dominant genus followed by Treponema, Propionibacterium, Syntrophus, and Desulfobulbus. The sludge samples could be clustered into six groups (C1 to C6) according their microbial structure similarities. Very high pH (≥11.9) was the main sludge attribute segregating C6, that presented very distinct microbial structure from the others. Its most dominant genera were ...Continue Reading

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Citations

May 22, 2019·Environmental Science and Pollution Research International·Aleksandra Ziembińska-BuczyńskaGrzegorz Cema
Jun 11, 2020·Scientific Reports·Rafaela Garrido GodoySabri Saeed Sanabani
Oct 22, 2019·New Biotechnology·Barbara TonanziAndrea Gianico
Feb 6, 2021·Environmental Science and Pollution Research International·Mauricio Faleschini, Américo Iadran Torres
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Dec 22, 2020·Frontiers in Microbiology·Yu-Ming Cai
Nov 19, 2020·Applied Microbiology and Biotechnology·Nuria Fernandez-GonzalezM Carballa

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Methods Mentioned

BETA
atomic emission spectrometry
electrophoresis
PCR

Software Mentioned

RDP Classifier
R
Canoco
Quantitative Insights into Microbial Ecology ( QIIME )
RColorBrewer
gplots
ANOSIM
Past
Origin

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