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Biological Phosphorus Removal During High-Rate, Low-Temperature, Anaerobic Digestion of Wastewater

Overview of attention for article published in Frontiers in Microbiology, March 2016
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About this Attention Score

  • Good Attention Score compared to outputs of the same age (67th percentile)
  • Good Attention Score compared to outputs of the same age and source (71st percentile)

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5 tweeters

Citations

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32 Dimensions

Readers on

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91 Mendeley
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Title
Biological Phosphorus Removal During High-Rate, Low-Temperature, Anaerobic Digestion of Wastewater
Published in
Frontiers in Microbiology, March 2016
DOI 10.3389/fmicb.2016.00226
Pubmed ID
Authors

Ciara Keating, Jason P. Chin, Dermot Hughes, Panagiotis Manesiotis, Denise Cysneiros, Therese Mahony, Cindy J. Smith, John W. McGrath, Vincent O’Flaherty

Abstract

We report, for the first time, extensive biologically mediated phosphate removal from wastewater during high-rate anaerobic digestion (AD). A hybrid sludge bed/fixed-film (packed pumice stone) reactor was employed for low-temperature (12°C) anaerobic treatment of synthetic sewage wastewater. Successful phosphate removal from the wastewater (up to 78% of influent phosphate) was observed, mediated by biofilms in the reactor. Scanning electron microscopy and energy dispersive X-ray analysis revealed the accumulation of elemental phosphorus (∼2%) within the sludge bed and fixed-film biofilms. 4', 6-diamidino-2-phenylindole (DAPI) staining indicated phosphorus accumulation was biological in nature and mediated through the formation of intracellular inorganic polyphosphate (polyP) granules within these biofilms. DAPI staining further indicated that polyP accumulation was rarely associated with free cells. Efficient and consistent chemical oxygen demand (COD) removal was recorded, throughout the 732-day trial, at applied organic loading rates between 0.4 and 1.5 kg COD m(-3) d(-1) and hydraulic retention times of 8-24 h, while phosphate removal efficiency ranged from 28 to 78% on average per phase. Analysis of protein hydrolysis kinetics and the methanogenic activity profiles of the biomass revealed the development, at 12°C, of active hydrolytic and methanogenic populations. Temporal microbial changes were monitored using Illumina MiSeq analysis of bacterial and archaeal 16S rRNA gene sequences. The dominant bacterial phyla present in the biomass at the conclusion of the trial were the Proteobacteria and Firmicutes and the dominant archaeal genus was Methanosaeta. Trichococcus and Flavobacterium populations, previously associated with low temperature protein degradation, developed in the reactor biomass. The presence of previously characterized polyphosphate accumulating organisms (PAOs) such as Rhodocyclus, Chromatiales, Actinobacter, and Acinetobacter was recorded at low numbers. However, it is unknown as yet if these were responsible for the luxury polyP uptake observed in this system. The possibility of efficient phosphate removal and recovery from wastewater during AD would represent a major advance in the scope for widespread application of anaerobic wastewater treatment technologies.

Twitter Demographics

The data shown below were collected from the profiles of 5 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 91 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 1%
France 1 1%
Italy 1 1%
Unknown 88 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 26 29%
Student > Master 20 22%
Student > Bachelor 11 12%
Student > Doctoral Student 8 9%
Researcher 7 8%
Other 5 5%
Unknown 14 15%
Readers by discipline Count As %
Environmental Science 20 22%
Engineering 16 18%
Agricultural and Biological Sciences 12 13%
Immunology and Microbiology 7 8%
Chemical Engineering 5 5%
Other 14 15%
Unknown 17 19%

Attention Score in Context

This research output has an Altmetric Attention Score of 3. 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 15 March 2016.
All research outputs
#2,757,079
of 7,396,084 outputs
Outputs from Frontiers in Microbiology
#1,558
of 5,043 outputs
Outputs of similar age
#104,441
of 325,344 outputs
Outputs of similar age from Frontiers in Microbiology
#192
of 670 outputs
Altmetric has tracked 7,396,084 research outputs across all sources so far. This one has received more attention than most of these and is in the 62nd percentile.
So far Altmetric has tracked 5,043 research outputs from this source. They receive a mean Attention Score of 4.2. This one has gotten more attention than average, scoring higher than 68% 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 325,344 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 67% of its contemporaries.
We're also able to compare this research output to 670 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 71% of its contemporaries.