Biostimulation versus bioaugmentation for the electro-bioremediation of 2,4-dichlorophenoxyacetic acid polluted soils

Barba, Silvia; Villaseñor, José; Rodrigo, Manuel A.; Cañizares, Pablo

doi:10.1016/j.jenvman.2020.111424

Cited by 16 publications

(5 citation statements)

References 28 publications

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“…707 Electrobioremediation couples electrokinetics and bioremediation. 709 According to this, by applying electro-biostimulation, the activity of already present microorganisms is enhanced. Experiments taking a microbial consortium acclimated to 2,4-dichlorophenoxyacetic acid biodegradation showed that such strategy afforded an increased pollutant removal efficiency reaching up almost 100%.…”

Section: Immobilization Of Enzymesmentioning

confidence: 99%

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Recent Progress and Prospects in Catalytic Water Treatment

et al. 2021

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Immobilization Of Enzymesmentioning

confidence: 99%

“…Electrobioremediation couples electrokinetics and bioremediation 709 . According to this, by applying electro-biostimulation the activity of already present microorganisms is enhanced.…”

Section: Bioremediation By Combined Processesmentioning

confidence: 99%

Recent Progress and Prospects in Catalytic Water Treatment

et al. 2021

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“…However, obviously, a slightly improved Cr(VI) removal efficiency with time was detected in the BS. One explanation was that the addition of nutrients to generate energy allowed all indigenous microbial species to reproduce in a relatively open environment [36,37]. Several microbial species without the capacity to remove Cr(VI) not only competed for nutrients but also produced acids, causing the re-dissolution of Cr(VI) [37,38].…”

Section: Comparison Of Bioremediation Effects From Different Strategiesmentioning

confidence: 99%

Comparing Different Strategies for Cr(VI) Bioremediation: Bioaugmentation, Biostimulation, and Bioenhancement

Yan,

Zhu

et al. 2023

Sustainability

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Unchecked releases of industrial waste, including chromium smelting slag (CSS), have resulted in disastrous effects on the environment for human use. Considering the problems of environment, efficiency, and sustainability, the present research was designed to evaluate the potential feasibility of Cr(VI) bioremediation by different strategies of natural attenuation (NA), bioaugmentation (BA), biostimulation (BS), and bioenhancement (BE). Results showed the BE was the best strategy for Cr(VI) removal and reached 86.2% in 84 days, followed by the BA, BS, and NA. The variation of Eh values indicated all systems translated the oxidation state into reduction continuously except for NA and BS during the bioremediation process. After bioremediation, the Tessier sequential extraction analyzed in the BE showed stable chromium levels up to 97%, followed by BA (89~93%), BS (75~78%), and NA (68%), respectively. Moreover, High-throughput sequencing was also used to assist in revealing the differences in microbial community structure between the different strategies. Stenotrophomonas, Ochrobactrum, and Azomonas, as the bioremediation microbes, were enriched in the BE in comparison with the others. This provided a new enhancement strategy for bioremediation microbes colonized in a new environment to achieve sustainable removal of Cr(VI).

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“…In soil environment, bioremediation is considered an ideal technology due to its safety, eco-friendliness, nonintrusiveness and non-destructiveness (Vidali, 2001). In order to enhance the rate and effectiveness of the naturally occurring remediation process, addition of different stimulation agents have been used (Bento et al, 2005;Barba et al, 2021). Phytoremediation which is one form of bioremediation use plants to reduce, remove, degrade or immobilize environmental contaminants like petroleum hydrocarbons (Peer et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Pennisetum purpureum Improved Polycyclic Aromatic Hydrocarbons Removal in Weathered-Petroleum Contaminated Soil

Riskuwa-Shehu

Ismail

Fardami

et al. 2022

EJBIO

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Petroleum hydrocarbons are among the major driving forces of advancement in the last Century. Some of the hydrocarbons especially polycyclic aromatics are however of health and environmental significance, due to their recalcitrance and persistence leading to adverse effects on health and ecosystem stability. A number of treatment technologies have been used to cleanup hydrocarbon contaminants and the use of phytoremediation technology have recently been described as promising. In this study, phytoremediation of weathered crude oil contaminated soil was carried out in a microcosm using Pennisetumpurpureum for 60 days. Pristine soil samples were collected and mixed with weathered petroleum contaminated soil to achieve 5%, 25%, 35% and 50% w/w contamination levels. Bacterial species in the rhizosphere were isolated and identified and residual oil was extracted and analyzed using GC-MS. Results showed that there was high bacterial population in rhizosphere (5.0×105 cfu/g to 6.4×105 cfu/g) than non-rhizosphere soil (2.4 ×105 cfu/g to 4.0×105 cfu/g); and Bacillus spp. (64.71%) were observed to be predominant in the rhizosphere followed by Micrococcus spp. (17.65%), Pseudomonas aeruginosa (5.88%), Klebsiella pneumoniae (5.88%) and Flavobacterium sp. (5.88%). Hydrocarbon concentration in the rhizosphere was reduced by 82.5%, 60.5%, 58.0% and 48.8% respectively. Complex polycyclic aromatic hydrocarbon compounds detected in the control using GC-MS were significantly reduced or completely degraded. Polycyclic aromatic hydrocarbons such as anthracene, naphthalene, fluorene, benzo (a) anthracene, pyrene and chrysene were significantly reduced at a rate ranging between 13.33% and 97.54%. Based on the rate of PAHs reduction observed in this study, it was evident that P. purpureumsupports cleanup of persistent hydrocarbon contaminants in soil environment. The use of this plant in large scale petroleum hydrocarbon cleanup under field conditions should be investigated.

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Biostimulation versus bioaugmentation for the electro-bioremediation of 2,4-dichlorophenoxyacetic acid polluted soils

Cited by 16 publications

References 28 publications

Recent Progress and Prospects in Catalytic Water Treatment

Recent Progress and Prospects in Catalytic Water Treatment

Comparing Different Strategies for Cr(VI) Bioremediation: Bioaugmentation, Biostimulation, and Bioenhancement

Pennisetum purpureum Improved Polycyclic Aromatic Hydrocarbons Removal in Weathered-Petroleum Contaminated Soil

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