Anthracene Removal and Mineral N Dynamics in a Surfactant-Amended Soil

Cárdenas-Aquino, María del Rosario; Salomón-Hernández, G.; Aguilar-Chávez, Ángel; Luna‐Guido, Marco; Marsch, Rodolfo; Dendooven, Luc

doi:10.1016/s1002-0160(14)60065-5

Cited by 3 publications

(4 citation statements)

References 43 publications

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“…Application of surfactant, however, decreased the removal of anthracene from both soils in this study. In a previous experiment, application of the same surfactant increased the removal of anthracene and the microbial activity in a loamy sand soil [ 9 ]. It is difficult to predict what the effect of the application of a surfactant on the removal of a contaminant will be.…”

Section: Discussionmentioning

confidence: 99%

“…Micrococcaceae, Nocardiaceae, Acetobacteraceae, Pseudomonadaceae). The application of the surfactant increased the microbial activity as evidenced by an increase in CO 2 emitted from a surfactant-amended soil compared to the unamended soil [ 9 ]. Consequently, the surfactant was used as C substrate by the soil microorganisms or the surfactant released physical protected soil organic material that was subsequently metabolized.…”

Section: Discussionmentioning

confidence: 99%

“…In a third treatment, soil was mixed for 10 min every 7 days. In a fourth treatment, soil was amended with 24.9 g kg -1 soil surfactant Surfynol ® 485 and mixed [ 9 ]. In a fifth treatment, soil was left unamended and served as control so that remediation capacity of the autochthonous microorganisms could be determined.…”

Section: Methodsmentioning

confidence: 99%

“…Some techniques try to increase the bioavailability of the contaminant while others try to stimulate microbial activity thereby accelerating the removal of the pollutant [ 6 ]. Surfactants, such as Surfynol ® 485, have been applied to soil to increase the bioavailability of PAHs in soil thereby accelerating their removal [ 7 – 9 ]. However, application of the surfactant can also inhibit the removal of PAHs from soil [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Changes in the Bacterial Community Structure of Remediated Anthracene-Contaminated Soils

et al. 2016

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Mixing soil or adding earthworms (Eisenia fetida (Savigny, 1826)) accelerated the removal of anthracene, a polycyclic aromatic hydrocarbon, from a pasture and an arable soil, while a non-ionic surfactant (Surfynol® 485) inhibited the removal of the contaminant compared to the untreated soil. It was unclear if the treatments affected the soil bacterial community and consequently the removal of anthracene. Therefore, the bacterial community structure was monitored by means of 454 pyrosequencing of the 16S rRNA gene in the pasture and arable soil mixed weekly, amended with Surfynol® 485, E. fetida or organic material that served as food for the earthworms for 56 days. In both soils, the removal of anthracene was in the order: mixing soil weekly (100%) > earthworms applied (92%) > organic material applied (77%) > untreated soil (57%) > surfactant applied (34%) after 56 days. There was no clear link between removal of anthracene from soil and changes in the bacterial community structure. On the one hand, application of earthworms removed most of the contaminant from the arable soil and had a strong effect on the bacterial community structure, i.e. a decrease in the relative abundance of the Acidobacteria, Chloroflexi and Gemmatimonadetes, and an increase in that of the Proteobacteria compared to the unamended soil. Mixing the soil weekly removed all anthracene from the arable soil, but had little or no effect on the bacterial community structure. On the other hand, application of the surfactant inhibited the removal of anthracene from the arable soil compared to the untreated soil, but had a strong effect on the bacterial community structure, i.e. a decrease in the relative abundance of Cytophagia (Bacteroidetes), Chloroflexi, Gemmatimonadetes and Planctomycetes and an increase in that of the Flavobacteria (Bacteroidetes) and Proteobacteria. Additionally, the removal of anthracene was similar in the different treatments of both the arable and pasture soil, but the effect of application of carrot residue, earthworms or the surfactant on the bacterial community structure was more accentuated in the arable soil than in the pasture soil. It was found that removal of anthracene was not linked to changes in the bacterial community structure.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Changes in the Bacterial Community Structure of Remediated Anthracene-Contaminated Soils

et al. 2016

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Screening and Characterization of Pyrene-Degrading Bacterium from Oil-Contaminated Sites Around Chandigarh

Gupta

Puri

Kaur

2018

Waste Management and Resource Efficiency

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Anthracene Removal by Adsorption and Fenton's Process – A Comparative Study

Kumar

Amarnath

Venkatesan

et al. 2019

JSST

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Polycyclic Aromatic Hydrocarbons (PAHs), group of structurally related chemicals consisting of aromatic rings with no substitutions form a potent class of environmental pollutants. Removal of PAHs is necessary because it causes carcinogenic and mutagenic effects. Adsorption and Fenton's process is chosen among all the other methods. Among the various adsorbents, palm shell activated carbon gave the best adsorption. But comparatively the efficiency of Fenton's process is better than adsorption. Optimization of parameters such as temperature, time and dosage, concentration, pH are reported.

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Anthracene Removal and Mineral N Dynamics in a Surfactant-Amended Soil

Cited by 3 publications

References 43 publications

Changes in the Bacterial Community Structure of Remediated Anthracene-Contaminated Soils

Changes in the Bacterial Community Structure of Remediated Anthracene-Contaminated Soils

Screening and Characterization of Pyrene-Degrading Bacterium from Oil-Contaminated Sites Around Chandigarh

Anthracene Removal by Adsorption and Fenton's Process – A Comparative Study

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