Nonionic detergents as tracers of ground water pollution caused by municipal sewage

Zoller, Uri

doi:10.1016/0160-4120(90)90125-p

Cited by 16 publications

(4 citation statements)

References 16 publications

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“…To elucidate potential synergistic effects with surfactant mixtures, the current study focused on binary systems consisting of an anionic surfactant and a nonionic surfactant. Three surfactants commonly used in commercial products were examined, including the nonionic surfactants Brij 30 and Brij 35 ,– and the anionic surfactant LAS ,,– . The goal was to identify the effects of LAS on the sorption of the nonionic surfactants onto an aquifer sand.…”

Section: Introductionmentioning

confidence: 99%

Effects of Linear Alkylbenzene Sulfonate on the Sorption of Brij 30 and Brij 35 onto Aquifer Sand

Tripathi

Brown

2008

Environ. Sci. Technol.

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Surfactant sorption is of considerable importance to environmental applications, including surfactant flushing to mobilize hydrophobic contaminants; effects of surfactants on the transport of dissolved contaminants, microorganisms, and colloids through porous media; and bioremediation of hydrophobic organic compounds, as well as understanding the fate and transport of surfactants as environmental contaminants themselves. Although most sorption studies consider pure surfactants, commercial detergent formulations typically consist of mixtures of nonionic and anionic surfactants. In this study, the effects of varying concentrations of the anionic surfactant linear alkylbenzene sulfonate (LAS) on micelle formation and sorption behavior of the two commonly used nonionic surfactants Brij 30 and Brij 35 onto aquifer sand were examined. A strong linear relationship was observed between the critical micelle concentration (CMC) of the Brij surfactants and the concentration of LAS in the mixture, with the CMC decreasing with increasing concentration of LAS. The relative change in CMC as a function of the LAS concentration was identical forthe two Brij surfactants, indicating that LAS interacted with their common alkyl chains. Sorption isotherms were developed for Brij 30 and Brij 35 present as single surfactants in an aqueous solution as well as when present with LAS. Although LAS had minor effects on the maximum sorption plateaus of the Brij surfactants, Brij sorption at was significantly enhanced as a function of the LAS concentration for Brij aqueous concentrations below the CMC. Application of a multi-interaction isotherm model indicated that the formation of surface aggregates (e.g., hemimicelles) decreased with increasing LAS concentration. Overall, these results provide insight into the complex sorption behavior of surfactant mixtures.

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Section: Introductionmentioning

confidence: 99%

Effects of Linear Alkylbenzene Sulfonate on the Sorption of Brij 30 and Brij 35 onto Aquifer Sand

Tripathi

Brown

2008

Environ. Sci. Technol.

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“…Concentrations of nonylphenol polyethoxylates as high as 15 and 116 g/liter have been measured in U.S. and European rivers, respectively (Talmage, 1994). Considerably higher levels were measured in a survey of Israeli streams, 1.6-2.6 mg/liter (Zoller et al, 1990;Zoller, 1992).…”

Section: Introductionmentioning

confidence: 99%

Altered Metabolic Elimination of Testosterone and Associated Toxicity Following Exposure ofDaphnia magnato Nonylphenol Polyethoxylate

Baldwin

Graham

Shea

et al. 1998

Ecotoxicology and Environmental Safety

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“…Among these markers are various types of synthetic detergents. Approximately 30 million metric tons of synthetic detergents and surfactants are produced worldwide each year Zoller et al, 1990!, the majority of which are discharged into municipal wastewater sewers. Consequently, they contribute a potentially significant fraction of the total sewagederived organic load to the sea.…”

Section: Algae and Water Qualitymentioning

confidence: 99%

Environmental Reviews & Case Studies: Evaluation of Coastal Ocean Discharges and Environmental Impacts in Southeast Florida

Bloetscher

Meeroff

Plummer

2010

Environmental Practice

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This article outlines the current literature regarding anthropogenic inputs of nutrients and microorganisms into the coastal oceans. The concern about nutrients and microorganisms in coastal marine waters is that they may cause a shift in local populations of organisms and encourage invasive algae and coral diseases. The lack of baseline data on marine populations makes it difficult to determine the source of marine population shifts. This report focuses on the question of whether there is sufficient data to implicate coastal ocean outfall discharges of secondary treated wastewater effluent in southeast Florida as a causative agent in impacts to coastal communities. The literature does not appear to support evidence of population shifts from any particular source. Environmental Practice 12: 285-303 (2010)

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Nonionic detergents as tracers of ground water pollution caused by municipal sewage

Cited by 16 publications

References 16 publications

Effects of Linear Alkylbenzene Sulfonate on the Sorption of Brij 30 and Brij 35 onto Aquifer Sand

Effects of Linear Alkylbenzene Sulfonate on the Sorption of Brij 30 and Brij 35 onto Aquifer Sand

Altered Metabolic Elimination of Testosterone and Associated Toxicity Following Exposure ofDaphnia magnato Nonylphenol Polyethoxylate

Environmental Reviews & Case Studies: Evaluation of Coastal Ocean Discharges and Environmental Impacts in Southeast Florida

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