In:
PLOS ONE, Public Library of Science (PLoS), Vol. 18, No. 6 ( 2023-6-15), p. e0284120-
Abstract:
Pollution by lead (Pb) is an environmental and health threat due to the severity of its toxicity. Microbial bioremediation is an eco-friendly technique used to remediate contaminated soils. This present study was used to evaluate the effect of two bacterial strains isolated and identified from Bizerte lagoon: Cupriavidus metallidurans LBJ ( C . metallidurans LBJ) and Pseudomonas stutzeri LBR ( P . stutzeri LBR) on the rate of depollution of soil contaminated with Pb from Tunisia. To determine this effect, sterile and non-sterile soil was bioaugmented by P . stutzeri LBR and C . metallidurans LBJ strains individually and in a mixture for 25 days at 30°C. Results showed that the bioaugmentation of the non-sterile soil by the mixture of P . stutzeri LBR and C . metallidurans LBJ strains gave the best rate of reduction of Pb of 71.02%, compared to a rate of 58.07% and 46.47% respectively for bioaugmentation by the bacterial strains individually. In the case of the sterile soil, results showed that the reduction rate of lead was in the order of 66.96% in the case of the mixture of the two bacterial strains compared with 55.66% and 41.86% respectively for the addition of the two strains individually. These results are confirmed by analysis of the leachate from the sterile and non-sterile soil which showed an increase in the mobility and bioavailability of Pb in soil. These promising results offer another perspective for a soil bioremediation bioprocess applying bacterial bioremediation.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0284120
DOI:
10.1371/journal.pone.0284120.g001
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10.1371/journal.pone.0284120.g002
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10.1371/journal.pone.0284120.g003
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10.1371/journal.pone.0284120.g004
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10.1371/journal.pone.0284120.t001
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10.1371/journal.pone.0284120.s001
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10.1371/journal.pone.0284120.s002
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10.1371/journal.pone.0284120.s019
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10.1371/journal.pone.0284120.s020
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10.1371/journal.pone.0284120.s021
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10.1371/journal.pone.0284120.s022
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10.1371/journal.pone.0284120.s023
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10.1371/journal.pone.0284120.s024
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10.1371/journal.pone.0284120.s025
DOI:
10.1371/journal.pone.0284120.s026
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2267670-3
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