Sorption of linear alkylbenzenesulfonates (LAS) on marine sediment

Rubio, Julio Álvarez; González-Mazo, Eduardo; Gómez-Parra, Abelardo

doi:10.1016/0304-4203(96)00040-0

Cited by 50 publications

(38 citation statements)

References 14 publications

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“…1a shows the evolution of SAS homologue concentrations in the aqueous phase during at sorption test. We can observe that the steady state is achieved in less than 2 h. This is in agreement with previous studies on sorption of anionic surfactants such as linear alkylbenzene sulfonates (LAS) reporting that 4 h are enough to reach the equilibrium during sorption assays (Rubio et al, 1996;Westall et al, 1999). In any case, the following sorption experiments (1e6) lasted 24 h to ensure equilibrium.…”

Section: Determination Of Sas and Possible Metabolitessupporting

confidence: 91%

“…This behaviour has been already reported for other related anionic surfactants such as LAS (Rubio et al, 1996), where the partition coefficient in marine sediments increased from 78 AE 18 to 1145 AE 263 L kg À1 for different homologues (C 10 to C 13 ).…”

Section: Sorption Of Sas On Marine Sedimentssupporting

confidence: 84%

“…Sorption tests were carried out following the same methodology previously used for studying the sorption of LAS homologues in marine sediments (Rubio et al, 1996). Two different SAS commercial mixtures (SAS 10e20 and 20e20) were tested.…”

Section: Sorption Experimentsmentioning

confidence: 99%

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Reactivity and fate of secondary alkane sulfonates (SAS) in marine sediments

Baena-Nogueras

Rojas-Ojeda

Sanz

et al. 2014

Environmental Pollution

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a b s t r a c tThis research is focused on secondary alkane sulfonates (SAS), anionic surfactants widely used in household applications that access aquatic environments mainly via sewage discharges. We studied their sorption capacity and anaerobic degradation in marine sediments, providing the first data available on this topic. SAS partition coefficients increased towards those homologues having longer alkyl chains (from up to 141 L kg À1 for C 14 to up to 1753 L kg À1 for C 17 ), which were those less susceptible to undergo biodegradation. Overall, SAS removal percentages reached up to 98% after 166 days of incubation using anoxic sediments. The degradation pathway consisted on the formation of sulfocarboxylic acids after an initial fumarate attack of the alkyl chain and successive b-oxidations. This is the first study showing that SAS can be degraded in absence of oxygen, so this new information should be taken into account for future environmental risk assessments on these chemicals.

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Section: Determination Of Sas and Possible Metabolitessupporting

confidence: 91%

Section: Sorption Of Sas On Marine Sedimentssupporting

confidence: 84%

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Reactivity and fate of secondary alkane sulfonates (SAS) in marine sediments

Baena-Nogueras

Rojas-Ojeda

Sanz

et al. 2014

Environmental Pollution

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“…Isomers with the phenyl position closer to the end of the alkyl chain have more available surface for van der Waals forces (Hand and Williams, 1987) leading to higher sorption affinities. An increase in sorption with the salinity was observed in marine sediments (Rubio et al, 1996), and with the increase in H þ concentration in riverine sediments (Di Toro et al, 1990;Westall et al, 1999). Several studies have shown that LAS sorption to sediments and soils is correlated with the organic carbon or the clay content (Doi et al, 2002;Fytianos et al, 1998;Matthijs and De Henau, 1985;Westall et al, 1999).…”

Section: Introductionmentioning

confidence: 95%

“…To our knowledge, few studies have been performed on the sorption of LAS in marine sediments (Fytianos et al, 1998;Rubio et al, 1996), and these studies were focused on the effect of aqueous chemistry rather than sorbent characteristics. Sorption studies with riverine sediments are a helpful first approach but do obviously not consider the specifics of seawater composition.…”

Section: Introductionmentioning

confidence: 99%

Effect of sediment properties on the sorption of C12-2-LAS in marine and estuarine sediments

Rico-Rico

Temara

Behrends

et al. 2009

Environmental Pollution

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Sorption of C 12 -2-LAS to marine sediments mainly depends on both clay and organic carbon content. The importance of each parameter varies with the surfactant concentration. a r t i c l e i n f o a b s t r a c tLinear alkylbenzene sulfonates (LAS) are anionic high production volume surfactants used in the manufacture of cleaning products. Here, we have studied the effect of the characteristics of marine and estuarine sediments on the sorption of LAS. Sorption experiments were performed with single sediment materials (pure clays and sea sand), with sediments treated to reduce their organic carbon content, and with field marine and estuarine sediments. C 12 -2-LAS was used as a model compound. Sorption to the clays montmorillonite and kaolinite resulted in non-linear isotherms very similar for both clays. When reducing the organic content, sorption coefficients decreased proportionally to the fraction removed in fine grain sediments but this was not the case for the sandy sediment. The correlation of the sediment characteristics with the sorption coefficients at different surfactant concentrations showed that at concentrations below 10 mg C 12 -2-LAS/L, the clay content correlated better with sorption, while the organic fraction became more significant at higher concentrations.

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Comprehensive review of several surfactants in marine environments: Fate and ecotoxicity

Jackson

Eadsforth

Schowanek

et al. 2015

Environmental Toxicology and Chemistry

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Surfactants are a commercially important group of chemicals widely used on a global scale. Despite high removal efficiencies during wastewater treatment, their high consumption volumes mean that a certain fraction will always enter aquatic ecosystems, with marine environments being the ultimate sites of deposition. Consequently, surfactants have been detected within marine waters and sediments. However, aquatic environmental studies have mostly focused on the freshwater environment, and marine studies are considerably underrepresented by comparison. The present review aims to provide a summary of current marine environmental fate (monitoring, biodegradation, and bioconcentration) and effects data of 5 key surfactant groups: linear alkylbenzene sulfonates, alcohol ethoxysulfates, alkyl sulfates, alcohol ethoxylates, and ditallow dimethyl ammonium chloride. Monitoring data are currently limited, especially for alcohol ethoxysulfates and alkyl sulfates. Biodegradation was shown to be considerably slower under marine conditions, whereas ecotoxicity studies suggest that marine species are approximately equally as sensitive to these surfactants as freshwater species. Marine bioconcentration studies are almost nonexistent. Current gaps within the literature are presented, thereby highlighting research areas where additional marine studies should focus. Environ Toxicol Chem

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Sorption of linear alkylbenzenesulfonates (LAS) on marine sediment

Cited by 50 publications

References 14 publications

Reactivity and fate of secondary alkane sulfonates (SAS) in marine sediments

Reactivity and fate of secondary alkane sulfonates (SAS) in marine sediments

Effect of sediment properties on the sorption of C12-2-LAS in marine and estuarine sediments

Comprehensive review of several surfactants in marine environments: Fate and ecotoxicity

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