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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Denitrifying woodchip bioreactor and phosphorus filter pairing to minimize pollution swapping
|
|---|---|
| Published in |
Water Research, May 2017
|
| DOI | 10.1016/j.watres.2017.05.026 |
| Pubmed ID | |
| Authors |
Laura E. Christianson, Christine Lepine, Philip L. Sibrell, Chad Penn, Steven T. Summerfelt |
| Abstract |
Pairing denitrifying woodchip bioreactors and phosphorus-sorbing filters provides a unique, engineered approach for dual nutrient removal from waters impaired with both nitrogen (N) and phosphorus (P). This column study aimed to test placement of two P-filter media (acid mine drainage treatment residuals and steel slag) relative to a denitrifying system to maximize N and P removal and minimize pollution swapping under varying flow conditions (i.e., woodchip column hydraulic retention times (HRTs) of 7.2, 18, and 51 h; P-filter HRTs of 7.6-59 min). Woodchip denitrification columns were placed either upstream or downstream of P-filters filled with either medium. The configuration with woodchip denitrifying systems placed upstream of the P-filters generally provided optimized dissolved P removal efficiencies and removal rates. The P-filters placed upstream of the woodchip columns exhibited better P removal than downstream-placed P-filters only under overly long (i.e., N-limited) retention times when highly reduced effluent exited the woodchip bioreactors. The paired configurations using mine drainage residuals provided significantly greater P removal than the steel slag P-filters (e.g., 25-133 versus 8.8-48 g P removed m(-3) filter media d(-1), respectively), but there were no significant differences in N removal between treatments (removal rates: 8.0-18 g N removed m(-3) woodchips d(-1); N removal efficiencies: 18-95% across all HRTs). The range of HRTs tested here resulted in various undesirable pollution swapping by-products from the denitrifying bioreactors: nitrite production when nitrate removal was not complete and sulfate reduction, chemical oxygen demand production and decreased pH during overly long retention times. The downstream P-filter placement provided a polishing step for removal of chemical oxygen demand and nitrite. |
X Demographics
The data shown below were collected from the profiles of 8 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 13% |
| United States | 1 | 13% |
| Unknown | 6 | 75% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 6 | 75% |
| Science communicators (journalists, bloggers, editors) | 2 | 25% |
Mendeley readers
The data shown below were compiled from readership statistics for 123 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 123 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 21 | 17% |
| Student > Master | 20 | 16% |
| Researcher | 19 | 15% |
| Student > Bachelor | 8 | 7% |
| Student > Doctoral Student | 6 | 5% |
| Other | 19 | 15% |
| Unknown | 30 | 24% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 26 | 21% |
| Engineering | 23 | 19% |
| Agricultural and Biological Sciences | 19 | 15% |
| Chemical Engineering | 5 | 4% |
| Biochemistry, Genetics and Molecular Biology | 2 | 2% |
| Other | 6 | 5% |
| Unknown | 42 | 34% |
Attention Score in Context
This research output has an Altmetric Attention Score of 73. 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 17 August 2017.
All research outputs
#584,498
of 25,382,440 outputs
Outputs from Water Research
#93
of 11,876 outputs
Outputs of similar age
#12,047
of 325,438 outputs
Outputs of similar age from Water Research
#3
of 200 outputs
Altmetric has tracked 25,382,440 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 11,876 research outputs from this source. They receive a mean Attention Score of 5.0. This one has done particularly well, scoring higher than 99% 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 325,438 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 96% of its contemporaries.
We're also able to compare this research output to 200 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 98% of its contemporaries.