Phosphorus and ammonium removal characteristics from aqueous solutions by a newly isolated plant growth-promoting bacterium. Issue 20 (5th September 2020)
- Record Type:
- Journal Article
- Title:
- Phosphorus and ammonium removal characteristics from aqueous solutions by a newly isolated plant growth-promoting bacterium. Issue 20 (5th September 2020)
- Main Title:
- Phosphorus and ammonium removal characteristics from aqueous solutions by a newly isolated plant growth-promoting bacterium
- Authors:
- Daly, Imen
Jellali, Salah
Mehri, Ines
Reis, Maria A. M.
Freitas, Elisabete B.
Oehmen, Adrian
Chatti, Abdelwaheb - Abstract:
- ABSTRACT: An indigenous plant growth-promoting bacterium isolated from Peganum Harmala rhizosphere in the arid ecosystem was found to solubilize and accumulate phosphates. This isolate was identified as Pseudomonas sp . (PHR6) by partial 16S rRNA gene sequence analysis. Controlled batch experiments on nutrients removal by this isolate in mineral medium showed relatively high efficiencies after 24 h of aerobic incubation with average values of 117.59 and 335.38 mg gVSS −1 for phosphorus (P-PO4 ) and nitrogen (N-NH4 ), respectively. Furthermore, the strain performed heterotrophic nitrification ranging from 48.81% to 84.24% of the total removed nitrogen. On the other hand, the experimental results showed that a short idle period (24 h) significantly enhanced P accumulation (up to 95%) and N assimilation (up to 50%) of the total removed amounts. However, long idle period (20 days) revealed firstly aerobic phosphorous release phase succeeded by another removal one within 24 h of incubation. Overall, the idle treatment enhances P removal efficiency from the mineral liquid medium without significant effects on N-NH4 removal performance. The isolated strain showed also significant nutrient removal ability from synthetic wastewater providing an accumulated fraction of 98% from the total removed phosphorus amount. This study highlights the potential contribution of the selected rhizobacterium PHR6 to both environmental nutrient recycling and pollution control especially regardingABSTRACT: An indigenous plant growth-promoting bacterium isolated from Peganum Harmala rhizosphere in the arid ecosystem was found to solubilize and accumulate phosphates. This isolate was identified as Pseudomonas sp . (PHR6) by partial 16S rRNA gene sequence analysis. Controlled batch experiments on nutrients removal by this isolate in mineral medium showed relatively high efficiencies after 24 h of aerobic incubation with average values of 117.59 and 335.38 mg gVSS −1 for phosphorus (P-PO4 ) and nitrogen (N-NH4 ), respectively. Furthermore, the strain performed heterotrophic nitrification ranging from 48.81% to 84.24% of the total removed nitrogen. On the other hand, the experimental results showed that a short idle period (24 h) significantly enhanced P accumulation (up to 95%) and N assimilation (up to 50%) of the total removed amounts. However, long idle period (20 days) revealed firstly aerobic phosphorous release phase succeeded by another removal one within 24 h of incubation. Overall, the idle treatment enhances P removal efficiency from the mineral liquid medium without significant effects on N-NH4 removal performance. The isolated strain showed also significant nutrient removal ability from synthetic wastewater providing an accumulated fraction of 98% from the total removed phosphorus amount. This study highlights the potential contribution of the selected rhizobacterium PHR6 to both environmental nutrient recycling and pollution control especially regarding phosphorus. GRAPHICAL ABSTRACT: UF0001 … (more)
- Is Part Of:
- Environmental technology. Volume 41:Issue 20(2020)
- Journal:
- Environmental technology
- Issue:
- Volume 41:Issue 20(2020)
- Issue Display:
- Volume 41, Issue 20 (2020)
- Year:
- 2020
- Volume:
- 41
- Issue:
- 20
- Issue Sort Value:
- 2020-0041-0020-0000
- Page Start:
- 2603
- Page End:
- 2617
- Publication Date:
- 2020-09-05
- Subjects:
- Phosphorus accumulating rhizobacteria -- idle period -- phosphorus removal -- ammonium removal -- environmental fitness
Environmental engineering -- Periodicals
Environmental protection -- Periodicals
628.05 - Journal URLs:
- http://www.tandfonline.com/toc/tent20/current ↗
http://www.tandfonline.com/ ↗ - DOI:
- 10.1080/09593330.2019.1575917 ↗
- Languages:
- English
- ISSNs:
- 0959-3330
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3791.698800
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 22718.xml