Sorption of Triton X-100 on soil organic matter fractions: Kinetics and isotherms

Zhang, Guangzhi; Hu, Hao; Sun, Weiling; Ni, Jinren

doi:10.1016/s1001-0742(08)62343-8

Cited by 11 publications

(6 citation statements)

References 27 publications

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“…Wang and Mulligan [41] proved that TX100 was very appropriate for the treatment of fine sandy soil and sandy-silt with surfactant foam technology. From the literature results, it can be concluded that TX100 resulted appropriate for the removal of hydrophobic contaminants in permeable soils, as sandy soils, and lower efficiency was found in low permeability soils, probably due to the adsorption of TX100 to the soil particles, reducing the availability of surfactant for the extraction of contaminants [42,43]. Zhu et al [44] claimed that the sorption of TX100 on soils or sediments is the result of the combined contribution of soil/sediment organic matters and clay minerals, which depended on both the contents of soil/sediment organic matters and the types and contents of clay minerals.…”

Section: Discussionmentioning

confidence: 99%

Enhanced Electrokinetic Remediation of Hydrophobic Organics Contaminated Soils by the Combination of Non-Ionic and Ionic Surfactants

Boulakradeche

Akretche

Cameselle

et al. 2015

Electrochimica Acta

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Section: Discussionmentioning

confidence: 99%

Enhanced Electrokinetic Remediation of Hydrophobic Organics Contaminated Soils by the Combination of Non-Ionic and Ionic Surfactants

Boulakradeche

Akretche

Cameselle

et al. 2015

Electrochimica Acta

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“…The importance of these materials in sorption processes of hydrophobic pesticides and surfactants, in particular CPF and TX100, onto soil has been demonstrated extensively (Amirianshoja et al, 2013;Gebremariam et al, 2012;Laha et al, 2009;Rodríguez-Cruz et al, 2005;Valverde García et al, 1992;Zhu et al, 2003). Humic acids are often used to represent soil organic matter in sorption studies of hydrophobic compounds (Joo et al, 2012;Tanaka et al, 2005;Wan et al, 2011;Zhang et al, 2009). Together with fulvic acids, humic acids make up the predominant fractions of soil organic matter.…”

Section: Soil Matrix Design and Validationmentioning

confidence: 99%

“…organic matter for TX100 sorption assessment as the partition coefficients of TX100 to soil organic matter and humic acid are reported to be similar (Zhang et al, 2009). Montmorillonite and illite were selected as they are the most representative of the clay minerals constituting Queensland's Vertisols (Chinn and Pillai, 2008).…”

Section: Soil Matrix Design and Validationmentioning

confidence: 99%

“…Above a specific concentration, the critical micelle concentration (CMC), the monomers aggregate into micelles. These water soluble surfactant monomers and micelles contain hydrophobic microenvironments providing an efficient partitioning site for hydrophobic organic compounds increasing their apparent water solubility (Krogh et al, 2003;Ying, 2006;Zhang et al, 2009). Despite the recognition of this solubility enhancement process as a potentially significant unintentional transport pathway for hydrophobic pesticides, and the ubiquitous presence of surfactants in agrosystems, the risk associated with surfactant use has been overlooked to date.…”

Section: Introductionmentioning

confidence: 99%

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Effect of surfactant application practices on the vertical transport potential of hydrophobic pesticides in agrosystems

et al. 2018

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Surfactants have the potential to modify the environmental behavior of hydrophobic pesticides leading to an enhanced or reduced mobility risk. This risk is often overlooked in registration procedures due to a lack of suitable methodologies to quantify the transport potential of pesticides with surfactants. In this study we present a novel methodology designed to study the surfactant facilitated transport of pesticides under controlled equilibrium and dynamic hydrologic conditions. Using this methodology, we investigated the risk of chlorpyrifos enhanced mobility for two common surfactant application practices in agrosystems: pesticide spraying and irrigation with waste water. With the dynamic experiments we showed that a single irrigation event with artificial reclaimed water containing the nonionic surfactant Triton X100 at a concentration of 15 mg/L reduced the leaching of chlorpyrifos by 20% while the presence of the same surfactant in the chlopyrifos spraying formulation reduced the leaching amount by 60%. However, in the first case 90% of the chlropyrifos fraction remaining in soil was retained in the upper 3 cm while in the second cas, 72% was transported to the bottom layers. The presence of Triton X100 in irrigation water or spraying formulation retards the leaching of chlorpyrifos but enhances its downward transport.

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“…The high organic matter content of this soil (7.64 %) might be an inhibiting factor. Soil clay and organic matter are key factors related to the sorption of surfactants (Zhang et al 2009). Yeh and Lin (2003) found a strong correlation between the sorption rate of Triton X-100 and the SOM content.…”

Section: Mineralisation Study To Optimise Parameters For Effective Bimentioning

confidence: 99%

Evaluation of constraints in bioremediation of weathered hydrocarbon-contaminated arid soils through microcosm biopile study

Ramadass

Smith

Thavamani

et al. 2015

Int. J. Environ. Sci. Technol.

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This research investigated the factors influencing bioremediation (biopile) of arid soils contaminated by weathered hydrocarbons. Five soils were thoroughly characterised to determine total petroleum hydrocarbons (TPH), their physicochemical properties and microbial diversity. Identified biopile-limiting factors are to be elevated petroleum hydrocarbon concentrations, high electrical conductivity and the magnitude of the recalcitrant hydrocarbon fraction. To optimise the biopile parameters, microcosm study was conducted which showed significant TPH reduction in three of five soils (BP-1, BP-2 and BP-4) but not in other two (BP-3 and BP-5), where BP-3 had a very high hydrocarbon concentration (123,757 mg kg -1 ) and BP-5 had a high proportion of recalcitrant hydrocarbons ([70 % of C 29 ). Highest TPH removal (68 %) occurred in soil BP-2 and the lowest (5 %) in soil BP-3 over 56 days. Surfactant (Triton) addition, nutrient amendment or the soil dilution did not improve TPH degradation in soils BP-3 and BP-5. Phylogenetic analysis conducted during the remediation process found that hydrocarbon concentration and hydrocarbon fraction exerted the main effect on bacterial abundance, diversity and assemblage composition. At lower concentrations (*1000-4000 mg kg -1 ), bacterial diversity and abundance increased significantly, whilst decreased in higher concentrations. Although high TPH content and detection of TPH degraders, TPH biodegradation is limited in soil (BP-5) due to the presence of less soluble hydrocarbon fraction which indicated low TPH bioavailability (*7 %). Biopile could be applied as a technology to remediate three soils (BP-1, BP-2 and BP-4) but further modification of the biopile treatments required for other two soils BP-3 and BP-5.

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Sorption of Triton X-100 on soil organic matter fractions: Kinetics and isotherms

Cited by 11 publications

References 27 publications

Enhanced Electrokinetic Remediation of Hydrophobic Organics Contaminated Soils by the Combination of Non-Ionic and Ionic Surfactants

Enhanced Electrokinetic Remediation of Hydrophobic Organics Contaminated Soils by the Combination of Non-Ionic and Ionic Surfactants

Effect of surfactant application practices on the vertical transport potential of hydrophobic pesticides in agrosystems

Evaluation of constraints in bioremediation of weathered hydrocarbon-contaminated arid soils through microcosm biopile study

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