Remediation of soil contaminated by PAHs and TPH using alkaline activated persulfate enhanced by surfactant addition at flow conditions

Lominchar, M.A.; Lorenzo, David; Salvador, Alfredo; Santos, Aurora

doi:10.1002/jctb.5485

Cited by 44 publications

(10 citation statements)

References 50 publications

(124 reference statements)

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“…2 Furthermore, weathering could enhance the sorption of contaminants into soil pores, leading to chronic soil aging problems and decreased bioavailability and biodegradability of biota to pollutants. 3,4 Soil contaminated with petroleum hydrocarbons is a huge ecological problem, and there is an urgent need to nd effective approaches for the remediation of soil.…”

Section: Introductionmentioning

confidence: 99%

Bioremediation of petroleum hydrocarbon-contaminated soil by petroleum-degrading bacteria immobilized on biochar

Zhang

2019

RSC Adv.

111

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Section: Introductionmentioning

confidence: 99%

Bioremediation of petroleum hydrocarbon-contaminated soil by petroleum-degrading bacteria immobilized on biochar

Zhang

2019

RSC Adv.

111

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“…E-Mulse 3 ® was selected because it is a biodegradable and non-toxic surfactant. This surfactant was chosen elsewhere among other non-ionic and biodegradable options, such as Tween-Span, in the remediation of a soil contaminated with aged fuel (Lominchar et al., 2018). Moreover, this surfactant has been widely tested in SEAR studies at field scale as can be seen in https://www.ethicalchem.com/remediation-case-studies (EthicalChem, 2019) and in the review of Besha et al.…”

Section: Methodsmentioning

confidence: 99%

Soil flushing pilot test in a landfill polluted with liquid organic wastes from lindane production

Santos

Lorenzo

García-Cervilla

et al. 2019

Heliyon

Self Cite

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A B S T R A C TSites contaminated by Dense Non-Aqueous Liquid Phases (DNAPLs) containing chlorinated compounds are a ubiquitous problem caused by spills or the dumping of wastes with no concern for the environment. Their migration by gravity through the subsurface and their accumulation far below ground level make in-situ treatments the most appropriate remediation technologies. In this work, an aqueous solution containing a non-ionic and biodegradable surfactant was injected in the Sardas alluvial layer contaminated at some points with DNAPL (formed by a mixture of more than 28 chlorinated compounds) from lindane production. A volume of 5.28 m 3 of an aqueous surfactant emulsion (13 g L À1 ) was injected at 14.5 m b g.l in the permeable layer (gravel-sand), at a flow rate of 0.6 m 3 h À1 and the groundwater was monitored within a test cell (3.5 m radius) built ad hoc. The flow of the injected fluids in the subsurface was also evaluated using a conservative tracer, bromide (130 mg L À1 ), added to the surfactant solution. Concentration of contaminants, chloride, bromide and surfactant, surface tension and conductivity were measured at the injection point and at three monitoring points over time. High radial dispersion was noticed resulting in high dilution of the injected fluids. The surfactant was not adsorbed in the soil during the injection time, the adsorption of the surfactant took place in the meantime (15 h) between its injection and the groundwater (GW) extraction. The concentration of chlorinated compounds dissolved from the soil in the surfactant aqueous phase when equilibrium was reached (about 850 mg L À1 ) is related to the moderate average contamination of the soil in the test cell (about 1230 mg kg À1 ). In contrast, the extraction of the free DNAPL in the altered marls layer was highly enhanced due to the addition of the surfactant. Finally, it was found that the surfactant and the contamination did not migrate from the capture zone.

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“…Straight chain and ring-shaped hydrocarbons, colloid, and asphaltene are the basic components of total petroleum hydrocarbons (TPH) which are deadly poisonous and can not be broken down speedily by soil indigenous flora ( Zhang et al, 2019 ). Moreover, weathering can stimulate the blockage of soil pores, resulting in enduring complications of soil mortality and reduction of biota bioactivity and degradability to contaminants ( Lominchar et al, 2018 , Rahbari-Sisakht et al, 2017 ). Although many approaches for remediation of petroleum contaminated soil have been recommended, still there is a need for effective and eco-friendly techniques for hydrocarbon removal.…”

Section: Introductionmentioning

confidence: 99%

Biostimulation potential of biochar for remediating the crude oil contaminated soil and plant growth

Saeed

Ilyas

Jayachandran

et al. 2021

Saudi Journal of Biological Sciences

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Crude oil contamination is a serious environmental threat to soil and plants growing in it. Biochar has the potential of biostimulation for remediation of crude oil-contaminated soil. Therefore, the current research was designed to analyze the bio-stimulatory impact of biochar for remediating the crude oil contaminated soil (10%, and 15%), and growth of maize under glasshouse conditions. Biochar was produced by pyrolysis of Australian pines at 350 °C. Soil incubations were done for 20 days. The results of soil analysis showed that the crude oil degradation efficiency of biochar was 34%. The soil enzymatic activities had shown 38.5% increase in fluorescein diacetate (FDA) hydrolysis and 55.6% increase in dehydrogenase activity in soil incubated with biochar in comparison to control. The soil microbial diversity was improved to 41% in biochar treated soil with respect to untreated one, while microbial respiration rate had shown a 33.67% increase in soil incubated with biochar with respect to control under oil stress. Gas Chromatography Mass spectrometry (GC-MS) analysis had shown the high content of low molecular weight hydrocarbons (C 9 -C 13 ) in the soil incubated with biochar in comparison to untreated soil. Biochar showed a significant increase in fresh and dry biomass (25%, 14.61%), leaf area (10%), total chlorophyll (11%), water potential (21.6%), osmotic potential (21%), and membrane stability index (12.7%). Moreover, biochar treatment showed a higher increase in the contents of proline (29%), total amino acids (18%), soluble sugars (30.4%), and antioxidant enzymes like superoxide dismutase (16.5%), catalase (11%), and peroxidase (12%). Overall, the results of the present study suggest the bio-stimulating potential of biochar for degradation of hydrocarbons in crude oil contaminated soil and their growth-stimulating effects on maize.

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Remediation of soil contaminated by PAHs and TPH using alkaline activated persulfate enhanced by surfactant addition at flow conditions

Cited by 44 publications

References 50 publications

Bioremediation of petroleum hydrocarbon-contaminated soil by petroleum-degrading bacteria immobilized on biochar

Bioremediation of petroleum hydrocarbon-contaminated soil by petroleum-degrading bacteria immobilized on biochar

Soil flushing pilot test in a landfill polluted with liquid organic wastes from lindane production

Biostimulation potential of biochar for remediating the crude oil contaminated soil and plant growth

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