Phosphorus and ammonium removal characteristics from aqueous solutions by a newly isolated plant growth-promoting bacterium

Imen Daly, Salah Jellali, Ines Mehri, Maria A. M. Reis, Elisabete B. Freitas, Adrian Oehmen, Abdelwaheb Chatti

Research output: Contribution to journalArticle

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-PO 4 ) and nitrogen (N-NH 4 ), 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-NH 4 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.

Original languageEnglish
JournalEnvironmental Technology (United Kingdom)
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Ammonium Compounds
Phosphorus
Bacteria
ammonium
aqueous solution
phosphorus
bacterium
Nutrients
incubation
nitrogen
Minerals
mineral
rhizobacterium
pollution control
Nitrogen
nitrification
rhizosphere
recycling
phosphate
Nitrification

Keywords

  • ammonium removal
  • environmental fitness
  • idle period
  • Phosphorus accumulating rhizobacteria
  • phosphorus removal

Cite this

@article{59cf4afbaccf453b87cd9237a9c73c97,
title = "Phosphorus and ammonium removal characteristics from aqueous solutions by a newly isolated plant growth-promoting bacterium",
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-PO 4 ) and nitrogen (N-NH 4 ), 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-NH 4 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.",
keywords = "ammonium removal, environmental fitness, idle period, Phosphorus accumulating rhizobacteria, phosphorus removal",
author = "Imen Daly and Salah Jellali and Ines Mehri and Reis, {Maria A. M.} and Freitas, {Elisabete B.} and Adrian Oehmen and Abdelwaheb Chatti",
year = "2019",
month = "1",
day = "1",
doi = "10.1080/09593330.2019.1575917",
language = "English",
journal = "Environmental Technology",
issn = "0959-3330",
publisher = "Taylor & Francis",

}

TY - JOUR

T1 - Phosphorus and ammonium removal characteristics from aqueous solutions by a newly isolated plant growth-promoting bacterium

AU - Daly, Imen

AU - Jellali, Salah

AU - Mehri, Ines

AU - Reis, Maria A. M.

AU - Freitas, Elisabete B.

AU - Oehmen, Adrian

AU - Chatti, Abdelwaheb

PY - 2019/1/1

Y1 - 2019/1/1

N2 - 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-PO 4 ) and nitrogen (N-NH 4 ), 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-NH 4 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.

AB - 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-PO 4 ) and nitrogen (N-NH 4 ), 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-NH 4 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.

KW - ammonium removal

KW - environmental fitness

KW - idle period

KW - Phosphorus accumulating rhizobacteria

KW - phosphorus removal

UR - http://www.scopus.com/inward/record.url?scp=85061263290&partnerID=8YFLogxK

U2 - 10.1080/09593330.2019.1575917

DO - 10.1080/09593330.2019.1575917

M3 - Article

JO - Environmental Technology

JF - Environmental Technology

SN - 0959-3330

ER -