Adsorption of linear alkylbenzene sulfonate (LAS) on soils

Ou, Ziqing; Yediler, Ayfer; He, Yaowu; Jia, Liangqing; Kettrup, A.; Sun, Tieheng

doi:10.1016/0045-6535(95)00350-9

Cited by 77 publications

(44 citation statements)

References 27 publications

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“…However, organic carbon content is not always clearly related to the sorption of LAS to sediments. The relation of LAS sorption with the content of iron and aluminium oxides has often been observed for freshwater sediments and soils (Kristiansen et al, 2003;Ou et al, 1996;Westall et al, 1999). Interactions of LAS with these materials were explained by specific surface interactions.…”

Section: Sorption Of C 12 -2-las To Estuarine and Marine Sedimentsmentioning

confidence: 95%

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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Section: Sorption Of C 12 -2-las To Estuarine and Marine Sedimentsmentioning

confidence: 95%

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 depends on the nature of the adsorbent and on the concentration of the surfactant (Adeel and Luthy 1995;Ou et al 1996). In the presence of increasing surfactant concentrations, fewer active sorption sites are available on the surface of the solid and more hemimicelles arise.…”

Section: Occurrence and Behavior In The Environmentmentioning

confidence: 99%

A perspective on the potential risks of emerging contaminants to human and environmental health

Pereira

Souza

Bernardes

et al. 2015

Environ Sci Pollut Res

205

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Technological, agricultural, and medical advances have improved the lifestyle of humankind. However, these advances have caused new problems that affect the environment and future generations. Emerging contaminants display properties such as low degradation potential and environmental persistence. In addition, most contaminants are lipophilic, which culminates in high bioaccumulation. The disposal of pharmaceuticals and personal care products into the environment underlies microbial and bacterial resistance. Plasticizers change several characteristics of industrialized materials, such as flexibility, but they are potentially carcinogenic and disrupt the endocrine system. Pesticides prevent the propagation of numerous kinds of pests; nevertheless, they exert neurotoxic and mutagenic effects, and they impact the environment negatively. Addition of flame retardants to a number of materials prevents flame propagation; however, after their release into the environment, these chemicals may bioaccumulate in organisms and disrupt the endocrine system, too. Surfactants can change the surface and interfacial properties of liquids, but their presence in the environment can interfere with countless enzymes and can even impair the endocrine system of various organisms and induce the feminization of species. Hence, gaining knowledge about emerging contaminants is increasingly important to minimize future damage and enable proper monitoring of each class of compounds in the environment which will help to improve legislation on this matter.

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“…The LAS adsorption capacity of a soil significantly depended on its clay content. Under real soil environments where LAS levels are rather low, the LAS adsorption ability of a soil is very weak (Ou et al 1996).…”

Section: Fate Of Surfactants In Waters and Soilsmentioning

confidence: 99%

Surfactants in sludge-amended agricultural soils: a review

et al. 2008

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Surfactants are included in different detergent formulations and are one of the most ubiquitous and important families of organic compounds. Although the generic term applies to a great number of products, 80% of their demand is covered by only ten types of compounds. The global surfactant market volume size is more than 18 million tons per year. Large quantities of surfactants are continuously released into the environment, where they can or cannot be degraded depending on their structure. The alkylbenzenesulphonate (LAS) is the most widely used surfactant. LAS can be degraded under aerobic conditions but is persistent in the environment under anaerobic conditions. Surfactants may enter the terrestrial environment through several routes, with the use of sewage sludge as fertiliser on agricultural land being by far the most important. High concentrations of surfactants and their degradation products may affect the biota. On the other hand, due to their amphiphilic nature, surfactants may interact both with inorganic as well as organic contaminants affecting their bioavailability.

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Adsorption of linear alkylbenzene sulfonate (LAS) on soils

Cited by 77 publications

References 27 publications

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

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

A perspective on the potential risks of emerging contaminants to human and environmental health

Surfactants in sludge-amended agricultural soils: a review

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