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Hydrogen sulfide oxidation in novel Horizontal-Flow Biofilm Reactors dominated by an Acidithiobacillus and a Thiobacillus species

Overview of attention for article published in Environmental Technology, March 2016
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Title
Hydrogen sulfide oxidation in novel Horizontal-Flow Biofilm Reactors dominated by an Acidithiobacillus and a Thiobacillus species
Published in
Environmental Technology, March 2016
DOI 10.1080/09593330.2016.1147609
Pubmed ID
Authors

S. Gerrity, C. Kennelly, E. Clifford, G. Collins

Abstract

Hydrogen Sulfide (H2S) is an odorous and highly toxic gas commonly encountered in various commercial and municipal sectors. Three novel, laboratory-scale, Horizontal-Flow Biofilm Reactors (HFBRs) were tested for the removal of hydrogen sulfide (H2S) gas from air streams over a 178-day trial at 10°C. Removal rates of up to 15.1 g [H2S] m(-3) h(-1) were achieved during the trial, demonstrating that HFBRs are a suitable technology for the treatment of H2S-contaminated airstreams at low temperatures. Bio-oxidation of H2S in the reactors led to the production of H(+) and sulfate (SO4(2-)) ions resulting in acidification of the liquid phase. Reduced removal efficiency was observed when a loading rate of 15.1 g [H2S] m(-3)h(-1)was applied to the HFBRs. The addition of NaHCO3to the liquid nutrient feed (SWW) during this period resulted in improved H2S removal. The bacterial community in the HFBRs was investigated by sequencing and fingerprinting the 16S rRNA genes. Bacterial diversity was low, likely due to the harsh environmental conditions prevailing in the systems, and the HFBRs were dominated by two species from the genus Acidithiobacillus and Thiobacillus. Even so, there were significant differences in microbial community structure between distinct zones in the HFBRs due to the influence of alkalinity, pH and SO4 concentrations. Despite the low operating temperature, this study indicates that HFBRs have excellent potential to biologically treat H2S contaminated airstreams.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter 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 16 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 16 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 6 38%
Student > Ph. D. Student 4 25%
Student > Doctoral Student 2 13%
Student > Master 1 6%
Other 1 6%
Other 0 0%
Unknown 2 13%
Readers by discipline Count As %
Environmental Science 4 25%
Engineering 3 19%
Agricultural and Biological Sciences 2 13%
Chemical Engineering 2 13%
Economics, Econometrics and Finance 1 6%
Other 2 13%
Unknown 2 13%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. 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 02 February 2016.
All research outputs
#9,978,287
of 12,464,804 outputs
Outputs from Environmental Technology
#492
of 902 outputs
Outputs of similar age
#227,719
of 333,521 outputs
Outputs of similar age from Environmental Technology
#13
of 28 outputs
Altmetric has tracked 12,464,804 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 902 research outputs from this source. They receive a mean Attention Score of 1.7. This one is in the 11th percentile – i.e., 11% of its peers scored the same or lower than it.
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 333,521 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 17th percentile – i.e., 17% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 28 others from the same source and published within six weeks on either side of this one. This one is in the 21st percentile – i.e., 21% of its contemporaries scored the same or lower than it.