Journal article

Publication year: 2016

Pages: 2186-2194

Journal: Journal of Soils and Sediments

Volume number: 16

Issue number: 9

ISSN: 1439-0108

DOI Link: https://doi.org/10.1007/s11368-016-1418-1

Publisher: Springer

Abstract: 
The increasing reuse of wastewater for irrigation introduces surfactants and antibiotics into the environment. How these two kinds of compounds interact with regard to their sorption processes in soil is not clear.We performed batch experiments to investigate the sorption of linear alkylbenzene sulfonates (LAS) and its effect on sorption of sulfamethoxazole and ciprofloxacin in irrigated and non-irrigated soils with different organic matter (OM) contents.LAS sorption was non-linear in the presence of the antibiotics, and as general trend, it increased with rising OM content of soils. Free LAS was also removed from solution by complexation with Ca2+. Dissolved organic compounds released from soils with OM contents aeyen18.4 g kg(-1) further reduced LAS sorption. Sorption of sulfamethoxazole was reduced by LAS sorption only in one soil with a small OM content of 9.5 g kg(-1).The strong sorption of ciprofloxacin is not affected by LAS. Sulfamethoxazole sorption only competes with LAS sorption in organic matter-poor soils. Accumulation of organic matter in soils, for example due to long-term wastewater irrigation, provides extra sorption capacity for LAS and sulfamethoxazole so that competition for sorption sites is reduced.

Harvard Citation style: Carrillo, M., Siebe, C., Dalkmann, P. and Siemens, J. (2016) Competitive sorption of linear alkylbenzene sulfonate (LAS) surfactants and the antibiotics sulfamethoxazole and ciprofloxacin in wastewater-irrigated soils of the Mezquital Valley, Mexico, Journal of Soils and Sediments, 16(9), pp. 2186-2194. https://doi.org/10.1007/s11368-016-1418-1

APA Citation style: Carrillo, M., Siebe, C., Dalkmann, P., & Siemens, J. (2016). Competitive sorption of linear alkylbenzene sulfonate (LAS) surfactants and the antibiotics sulfamethoxazole and ciprofloxacin in wastewater-irrigated soils of the Mezquital Valley, Mexico. Journal of Soils and Sediments. 16(9), 2186-2194. https://doi.org/10.1007/s11368-016-1418-1