Difference in the Composition of Linear Alkylbenzene Sulfonate Homologues in River Sediment and River Water

Hon-nami, Hiromi; Hanya, Takahisa

doi:10.3739/rikusui.41.1

Cited by 19 publications

(9 citation statements)

References 4 publications

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“…Because of its widespread use and subsequent disposal in wastewater, LAS and its biodegradation products are present in domestic sewage influents and effluents discharged to surface waters or groundwater (2)(3)(4)(5)(6). As a result, the occurrence and fate of LAS in the environment have been the focus of numerous inves-tigations (3,4,(7)(8)(9)(10)(11)(12)(13)(14)(15)(16). Several studies report that LAS is readily biodegraded under aerobic conditions such as those that exist during sewage treatment and in surface waters (3,9,10,(12)(13)(14) with half-lives in the range of 1-2 days for activated sludges, river waters, and sediments and 10-20 days for surface and subsurface soils (10,14).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of the Surfactant Linear Alkylbenzenesulfonate in Sewage-Contaminated Groundwater: A Comparison of Column Experiments and Field Tracer Tests

Krueger

Radakovich

Sawyer

et al. 1998

Environ. Sci. Technol.

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Transport and biodegradation of linear alkylbenzenesulfonate (LAS) in sewage-contaminated groundwater were investigated for a range of dissolved oxygen concentrations. Both laboratory column and an 80-day continuous injection tracer test field experiments were conducted. The rates of LAS biodegradation increased with increasing dissolved oxygen concentrations and indicated the preferential biodegradation of the longer alkyl chain LAS homologues (i.e., C12 and C13) and external isomers (i.e., 2- and 3-phenyl). However, for similar dissolved oxygen concentrations, mass removal rates for LAS generally were 2−3 times greater in laboratory column experiments than in the field tracer test. Under low oxygen conditions (<1 mg/L) only a fraction of the LAS mixture biodegraded in both laboratory and field experiments. Biodegradation rate constants for the continuous injection field test (0.002−0.08 day-1) were comparable to those estimated for a 3-h injection (pulsed) tracer test conducted under similar biogeochemical conditions, indicating that increasing the exposure time of aquifer sediments to LAS did not increase biodegradation rates.

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Section: Introductionmentioning

confidence: 99%

Biodegradation of the Surfactant Linear Alkylbenzenesulfonate in Sewage-Contaminated Groundwater: A Comparison of Column Experiments and Field Tracer Tests

Krueger

Radakovich

Sawyer

et al. 1998

Environ. Sci. Technol.

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“…Most LAS is disposed to sewage and removed during primary and secondary sewage treatment (4). Low, but measurable, concentrations of LAS have been reported in river and estuarine sediment (5,6).…”

Section: Introductionmentioning

confidence: 99%

Structure-activity relationships for sorption of linear alkylbenzenesulfonates

Hand¹,

Williams²

1987

Environ. Sci. Technol.

148

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rn Sorption of ten radiolabeled linear alkylbenzenesulfonate (LAS) homologues and isomers onto four river sediments increased with increasing alkyl chain length and as the phenyl position approached the end of the chain. Initial solution concentrations of LAS were varied between 10 and 1000 ppb. The value of the sorption partition coefficient (Kd) increased by factor of 2.8 for each additional methylene group in the homologous series Clo LAS to CI4 LAS. The value of Kd varied by 4 orders of magnitude, from 3 to 26000 L/kg, as sediment type, chain length, and phenyl position were varied. Sorption and desorption were rapid (<8 h) and nearly reversible in a single-replacement desorption experiment.

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“…Linear alkylbenzene sulfonates (LAS) are the most commonly used anionic surfactant. Although LAS are known to be biodegradable, considerable amounts of LAS have been found in rivers (Hon-nami and Hanya, 1980). There are numerous studies of their behavior in these environments (Painter and Zabel, 1988); however, LAS in marine environments have been the subject of only a few studies.…”

Section: Introductionmentioning

confidence: 99%

Linear alkylbenzene sulfonates (LAS) as tracers of urban waste waters in shallow littoral ecosystems: A case study in the Bay of Cádiz

González-Mazo

Quiroga²,

Gómez-Parra³

1999

Cienc. Mar.

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The spatial distribution of linear alkylbenzene sulfonates (LAS) and their composition of homologues in sediments of Cádiz Bay, a semienclosed system surrounded by urbanized areas, has been studied. LAS homologues were measured in marine sediments using solid-phase extraction and reversed-phase high-perfomance liquid chromatography with spectrofluorimetric detection. Results showed that LAS, principally associated with solids in suspension and originating from the existing outlet where urban waste waters are discharged into the Sancti Petri Channel, are transported to Cádiz Bay during the ebb tide or emptying phase. The transport of solids in suspension is defined by the circulation of tidal currents and its sedimentation will be encouraged in those zones where the water has a long residence time, zones of low energy, where the accumulation of the surfactant takes place. These results enable the area of influence of the urban waste water discharge to be determined. The distribution of the various LAS homologues in the sediment samples is different from that of the commercial LAS. The greater the distance from the discharge point, the smaller the quantities of the long-chain homologues.

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Difference in the Composition of Linear Alkylbenzene Sulfonate Homologues in River Sediment and River Water

Cited by 19 publications

References 4 publications

Biodegradation of the Surfactant Linear Alkylbenzenesulfonate in Sewage-Contaminated Groundwater: A Comparison of Column Experiments and Field Tracer Tests

Biodegradation of the Surfactant Linear Alkylbenzenesulfonate in Sewage-Contaminated Groundwater: A Comparison of Column Experiments and Field Tracer Tests

Structure-activity relationships for sorption of linear alkylbenzenesulfonates

Linear alkylbenzene sulfonates (LAS) as tracers of urban waste waters in shallow littoral ecosystems: A case study in the Bay of Cádiz

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