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An ‘omics’ approach towards the characterisation of laboratory scale anaerobic digesters treating municipal sewage sludge

Overview of attention for article published in Water Research, January 2016
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  • Good Attention Score compared to outputs of the same age (70th percentile)
  • High Attention Score compared to outputs of the same age and source (88th percentile)

Mentioned by

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8 tweeters

Citations

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23 Dimensions

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79 Mendeley
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Title
An ‘omics’ approach towards the characterisation of laboratory scale anaerobic digesters treating municipal sewage sludge
Published in
Water Research, January 2016
DOI 10.1016/j.watres.2015.10.029
Pubmed ID
Authors

D.J. Beale, A.V. Karpe, J.D. McLeod, S.V. Gondalia, T.H. Muster, M.Z. Othman, E.A. Palombo, D. Joshi

Abstract

In this study, laboratory scale digesters were operated to simulate potential shocks to the Anaerobic Digestion (AD) process at a 350 ML/day wastewater treatment plant. The shocks included high (42 °C) and low (32 °C) temperature (either side of mesophilic 37 °C) and a 20% loading of fats, oil and grease (FOG; 20% w:v). These variables were explored at two sludge retention times (12 and 20 days) and two organic loading rates (2.0 and 2.5 kgTS/m(3)day OLR). Metagenomic and metabolomic approaches were then used to characterise the impact of operational shocks in regard to temperature and FOG addition, as determined through monitoring of biogas production, the microbial profile and their metabolism. Results showed that AD performance was not greatly affected by temperature shocks, with the biggest impact being a reduction in biogas production at 42 °C that persisted for 32 ± 1 days. The average biogas production across all digesters at the completion of the experiment was 264.1 ± 76.5 mL/day, with FOG addition observed to significantly promote biogas production (+87.8 mL/day). Metagenomic and metabolomic analyses of the digesters indicated that methanogens and methane oxidising bacteria (MOB) were low in relative abundance, and that the ratio of oxidising bacteria (methane, sulphide and sulphate) with respect to sulphate reducing bacteria (SRB) had a noticeable influence on biogas production. Furthermore, increased biogas production correlated with an increase in short chain fatty acids, a product of the addition of 20% FOG. This work demonstrates the application of metagenomics and metabolomics to characterise the microbiota and their metabolism in AD digesters, providing insight to the resilience of crucial microbial populations when exposed to operational shocks.

Twitter Demographics

The data shown below were collected from the profiles of 8 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 79 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Brazil 2 3%
Chile 1 1%
Germany 1 1%
Spain 1 1%
Iran, Islamic Republic of 1 1%
Unknown 73 92%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 36 46%
Researcher 14 18%
Unspecified 7 9%
Student > Master 7 9%
Student > Bachelor 5 6%
Other 10 13%
Readers by discipline Count As %
Environmental Science 16 20%
Engineering 15 19%
Unspecified 13 16%
Agricultural and Biological Sciences 13 16%
Biochemistry, Genetics and Molecular Biology 5 6%
Other 17 22%

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 08 November 2015.
All research outputs
#3,397,648
of 12,269,818 outputs
Outputs from Water Research
#1,133
of 5,590 outputs
Outputs of similar age
#75,073
of 259,784 outputs
Outputs of similar age from Water Research
#14
of 121 outputs
Altmetric has tracked 12,269,818 research outputs across all sources so far. This one has received more attention than most of these and is in the 71st percentile.
So far Altmetric has tracked 5,590 research outputs from this source. They receive a mean Attention Score of 3.6. This one has done well, scoring higher than 78% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 259,784 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 70% of its contemporaries.
We're also able to compare this research output to 121 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 88% of its contemporaries.