Application of vegetable oils in the treatment of polycyclic aromatic hydrocarbons-contaminated soils

Yap, Chiew Lin; Gan, Suyin; Ng, Hoon Kiat

doi:10.1016/j.jhazmat.2009.11.078

Cited by 71 publications

(36 citation statements)

References 121 publications

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“…The partition of PAH favored the fatty acid methyl esters phase than the soil phase for PAH with log k ow up to 5.58 or higher. In addition, the inclusion of biodiesel dissolved the soil organic material that bound PAHs, which then acted as a cosolute and enhanced the capacity of biodiesel to extract PAHs from contaminated soil [23].…”

Section: Discussionmentioning

confidence: 99%

Removal of high concentrations of polycyclic aromatic hydrocarbons from contaminated soil by biodiesel

Gong

Zheng

et al. 2010

Front. Environ. Sci. Eng. China

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Solubilizing experiments were carried out to evaluate the ability of biodiesel to remove polycyclic aromatic hydrocarbons (PAHs) from highly contaminated manufactured gas plant (MGP) and PAHs spiked soils with hydroxypropyl-β-cyclodextrin (HPCD) and tween 80 as comparisons. Biodiesel displayed the highest solubilities of phenanthrene (420.7 mg$L -1 ), pyrene (541.0 mg$L -1 ), and benzo(a)pyrene (436.3 mg$L -1 ). These corresponded to several fold increases relative to 10% HPCD and tween 80. Biodiesel showed a good efficiency for PAH removal from the spiked and MGP soils for both low molecular weight and high molecular weight PAHs at high concentrations. Biodiesel was the best agent for PAH removal from the spiked soils as compared with HPCD and tween 80; as over 77.9% of individual PAH were removed by biodiesel. Tween 80 also showed comparable capability with biodiesel for PAH solubilization at a concentration of 10% for the spiked soils. Biodiesel solubilized a wider range of PAHs as compared to HPCD and tween 80 for the MPG soils. At PAH concentrations of 229.6 and 996.9 mg$kg -1 , biodiesel showed obvious advantage over the 10% HPCD and tween 80, because it removed higher than 80% of total PAH. In this study, a significant difference between PAH removals from the spiked and field MGP soils was observed; PAH removals from the MGP soil by HPCD and tween 80 were much lower than those from the spiked soil. These results demonstrate that the potential for utilizing biodiesel for remediation of highly PAH-contaminated soil has been established.

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Section: Discussionmentioning

confidence: 99%

Removal of high concentrations of polycyclic aromatic hydrocarbons from contaminated soil by biodiesel

Gong

Zheng

et al. 2010

Front. Environ. Sci. Eng. China

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“…Therefore, prior to oxidation, solubilizing agents such as surfactants [40,44,170,171], vegetable oils [172], co-solvents [53,151] or cyclodextrins [173] can be used in order to enhance PAH desorption and increase PAH availability.…”

Section: Please Insertmentioning

confidence: 99%

Selection of oxidant doses for in situ chemical oxidation of soils contaminated by polycyclic aromatic hydrocarbons (PAHs): A review

Ranc

Faure

Croze³

et al. 2016

Journal of Hazardous Materials

147

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“…We were able to successfully demonstrate that the bioremediation of PAH-contaminated soil by bioaugmenting with reeds and immobilized cells of strains resulted in the greatest depletion of pyrene and indeno(1,2,3-cd)pyrene within 40 days. It is speculated that its success was probably linked to its ability to immobilize and enrich PAH degraders, initiate co-metabolism, and improve PAH bioavailability [Yap et al, 2010]. In contrast, only reeds were found to degrade pyrene and indeno(1,2,3-cd)-pyrene at a slower rate, which may have been brought about by sorption of PAHs to the roots, plant metabolism [Leigh et al, 2006] or enhanced degradation through the rhizospheric bacteria and/or promotion of indigenous degraders [Huang et al, 2004].…”

Section: Degradation Ability Of Immobilized Bacterial Cells Studymentioning

confidence: 99%

Enhanced Biodegradation of HMW- PAHs using Immobilized Microorganisms in an Estuarine Reed Wetlands Simulator

Huang¹,

Tian²,

Yu³

2015

Proceedings of the 2015 International Power, Electronics and Materials Engineering Conference

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Abstract. Biodegradation of pyrene and indeno(1,2,3-cd)pyrene in reed rhizosphere soil was carried out in a small-scale wetland simulator using reed as well as microorganisms immobilized on cinder beads under natural environmental conditions. The results show that the stability of the introduced strains was enhanced upon immobilization and that the depletion of pyrene and indeno(1,2,3-cd)pyrene after 40 days was 68.4%, and 87.9%, respectively, whereas reeds or immobilized cells alone exhibited relatively poor degradation of PAHs in the same time period. This showed that plant and microbes promoted the degradation of pyrene and indeno(1,2,3-cd)pyrene. The results of this study show that PAH-degrading bacteria associated with plants could enhance pollutant removal, and this offers opportunities to facilitate high molecular weight (HMW) PAHs plant-microbe remediation in wetlands.

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Application of vegetable oils in the treatment of polycyclic aromatic hydrocarbons-contaminated soils

Cited by 71 publications

References 121 publications

Removal of high concentrations of polycyclic aromatic hydrocarbons from contaminated soil by biodiesel

Removal of high concentrations of polycyclic aromatic hydrocarbons from contaminated soil by biodiesel

Selection of oxidant doses for in situ chemical oxidation of soils contaminated by polycyclic aromatic hydrocarbons (PAHs): A review

Enhanced Biodegradation of HMW- PAHs using Immobilized Microorganisms in an Estuarine Reed Wetlands Simulator

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