Kinetics of Phenanthrene Dissolution into Water in the Presence of Nonionic Surfactants

Grimberg, Stefan J.; Nagel, Janet.; Aitken, Michael D.

doi:10.1021/es00006a008

Cited by 124 publications

(114 citation statements)

References 33 publications

Supporting

Mentioning

100

Contrasting

Unclassified

Order By: Relevance

“…When surfactant concentrations increased, the k L ЈaЈ values of naphthalene estimated by nonlinear regression depicted in Figure 2 decreased from 2.53 ϫ 10 Ϫ4 sec Ϫ1 to 2.80 ϫ 10 Ϫ5 sec Ϫ1 . These empirical findings are consistent with earlier findings, 27,35,36 indicating that k L ЈaЈ values decrease with the surfactant concentration. In addition, Table 3 and Figure 6 show the viscosities of three nonionic surfactants at various surfactant concentrations.…”

Section: Effects Of Surfactants On Naphthalene Absorptionsupporting

confidence: 93%

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Huang

Lee

2003

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

Previous research has demonstrated that an anionic surfactant can increase the solubility of the vapor phases of both naphthalene and sulfur dioxide in water. This study examines the feasibility of removing polycyclic aromatic hydrocarbons (PAHs) during gas absorption by adding the polyoxyethylenated nonionic surfactants tetraethylene glycol monodecyl ether (C 10 E 4 ), octaethylene glycol monodecyl ether (C 10 E 8 ), and octaethylene glycol monotetradecyl ether (C 14 E 8 ), to water. The apparent solubility and absorption rates of naphthalene in surfactant solution were slightly higher than in pure water at a concentration lower than the critical micelle concentration (CMC). However, the apparent equilibrium naphthalene solubility increased linearly in proportion to the concentrations of nonionic surfactants because of the solubilization effect of micelles at concentrations above the CMC. The solubilization effect exceeded that of the reduced mass transfer coefficient, increasing the rate of absorption of vaporous naphthalene. For the four surfactants, the capacity to solubilize naphthalene was in the order C 10 E 4 Ͼ C 14 E 8 Ͼ C 10 E 8 Ͼ sodium dodecyl sulfate (SDS) and was related to the hydrophile-lipophile balance values of the surfactants. The enrichment factors, which can express the degree of naphthalene solubility in solution, were 6.09 -14.2 at a surfactant concentration of 0.01 M for the three polyoxyethylenated nonionic surfactants. Empirical findings confirm that adding nonionic surfactants increases the absorption efficiency of hydrophobic organic compounds (HOCs) using spray or packed tower.

show abstract

Section: Effects Of Surfactants On Naphthalene Absorptionsupporting

confidence: 93%

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Huang

Lee

2003

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

show abstract

“…The model parameter k s is a lumped kinetic parameter that represents the surfactant solubilization of HOC and subsequent transport of micellar phase HOC to the cell. Previous models and studies have also discussed the potential for surfactant micelle formation on the surface of the NAPL droplet with subsequent diffusion of the HOC containing micelle through the hydrodynamic boundary layer for being the rate-limiting process in insoluble hydrocarbon dissolution (Grimberg et al, 1995(Grimberg et al, , 1996. Subsequent diffusion of the HOC-containing micelle through the bulk aqueous phase and contact with the microorganisms are also required for HOC biodegradation.…”

Section: Discussionmentioning

confidence: 99%

“…Mechanistic models have been recently developed that describe the influence of nonionic surfactants on the rate of solid-phase HOC dissolution under laminar flow conditions which may be useful in prediction of surfactant-enhanced transport and HOC dissolution in solid/aqueous-phase environments (Grimberg et al, 1995(Grimberg et al, , 1996. We have developed a mechanistic model that describes the influence of biological surfactants on microbial biodegradation of liquid phase insoluble hydrocarbon and subsequent dissolution of nonaqueous-phase liquid (NAPL) HOC.…”

Section: Introductionmentioning

confidence: 99%

Kinetic model of biosurfactant-enhanced hexadecane biodegradation byPseudomonas aeruginosa

Sekelsky

Shreve

1999

Biotechnol. Bioeng.

View full text Add to dashboard Cite

“…Solutions of free fatty acids similar to those found in vegetable oils (e.g. potassium laurate) have molar solubility ratios (MSRs) for PAHs (phenanthrene and pyrene) which are very similar to those of synthetic chemical surfactants (Klevens, 1950;Tiehm, 1994), as do esterified fatty acids derived directly from coconut oil (Grimberg et al, 1995). Paraffin oil, which is chemically similar to some vegetable oils, has been shown to increase the aqueous solubility of pyrene by 5 orders of magnitude (Jimenez and Bartha, 1996).…”

Section: Data Obtained In Field Trials Of Fenton's-based Chemical-biomentioning

confidence: 92%

Application of Chemically Accelerated Biotreatment to Reduce Riskin Oil-Impacted Soils

Paterek¹,

W.W.Bogan²,

Trbovic³

et al. 2003

View full text Add to dashboard Cite

PUBLIC ABSTRACTThe drilling and operation of gas/petroleum exploratory wells and the operations of natural gas and petroleum production wells generate a number of waste materials that are usually stored and/or processed at the drilling/operations site. Contaminated soils result from drilling operations, production operations, and pipeline breaks or leaks where crude oil and petroleum products are released into the surrounding soil or sediments. In many cases, intrinsic biochemical remediation of these contaminated soils is either not effective or is too slow to be an acceptable approach. This project targeted petroleum-impacted soil and other wastes, such as soil contaminated by: accidental release of petroleum and natural gas-associated organic wastes from pipelines or during transport of crude oil or natural gas; production wastes (such as produced waters, and/or fuels or product gas). Our research evaluated the process designated Chemically-Accelerated Biotreatment (CAB) that can be applied to remediate contaminated matrices, either on-site or in situ. The Gas Technology Institute (GTI) had previously developed a form of CAB for the remediation of hydrocarbons and metals at Manufactured Gas Plant (MGP) sites and this research project expanded its application into Exploration and Production (E&P) sites. The CAB treatment was developed in this project using risk-based endpoints, a.k.a. environmentally acceptable endpoints (EAE) as the treatment goal. This goal was evaluated, compared, and correlated to traditional analytical methods (Gas Chromatography (GC), High Precision Liquid Chromatography (HPLC), or Gas Chromatography-Mass Spectrometry (CG-MS)). This project proved that CAB can be applied to remediate E&P contaminated soils to EAE, i.e. those concentrations of chemical contaminants in soil below which there is no adverse affect to human health or the environment. Conventional approaches to risk assessment to determine "how clean is clean" for soils undergoing remediation have been based on total contaminant concentrations in soil, as determined by laboratory extraction methods that use vigorous physical and chemical procedures. Numerous data collected from bioavailability studies in this study and others carried out by GTI and other organizations conducted on contaminated soils and sediments continue to show that not all contaminants are available to environmental receptors including man or ecologically forms. In short, there exist fractions of contaminants in soil that cannot be released from the soil matrix by normal means. These sequestered contaminant fractions should not be considered a risk to human health or the ii environment. This project focused on CAB technology to treat soil contaminants to these acceptable levels. Therefore, the primary objective of this project was to determine what these contaminant levels are and to reach or exceed cleanup standards using CAB. These determinations were demonstrated and verified using toxicity and chemical mobility tests. Based on GTI's experience with a fo...

show abstract

Kinetics of Phenanthrene Dissolution into Water in the Presence of Nonionic Surfactants

Cited by 124 publications

References 33 publications

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Kinetic model of biosurfactant-enhanced hexadecane biodegradation byPseudomonas aeruginosa

Application of Chemically Accelerated Biotreatment to Reduce Riskin Oil-Impacted Soils

Contact Info

Product

Resources

About