title: Sorption, desorption and displacement of ibuprofen, estrone, and 17β estradiol in wastewater irrigated and rainfed agricultural soils.
abstract: Sorption and leaching potential of ibuprofen, estrone and 17β estradiol were tested in two agricultural soils: one irrigated using municipal wastewater and the other used in rainfed agriculture. Batch sorption-desorption experiments and undisturbed soil column assays were carried out using both soils to which were added a mixture of the target compounds. The three compounds were sorbed to a different extent by both soils: estrone>17β estradiol>ibuprofen. Higher sorption was observed in the irrigated soil, which was attributed to the accumulation of organic matter caused by wastewater irrigation. Desorption of hormones was hysteretic in the irrigated soil, while ibuprofen showed low hysteresis in both soils. Retardation of the compounds' displacement was consistent with the sorption pattern observed in the batch tests. Retardation factor (RF) was similar for the three compounds in the two tested soils, indicating that the target compounds are much more mobile in the soil columns than would be predicted based on their equilibrium sorption parameters. The results obtained in the experiments clarify the role of wastewater irrigated soils as a filter and degradation media for the target micropollutants.
authors.affiliation: Centre of Applied Sciences and Technological Development, National Autonomous University of México, 3000 Avenida Universidad, Coyoacán, México City 04360, Mexico.
authors.forename: Juan C
authors.initials: JC
authors.lastname: Durán-Álvarez
authors.affiliation: Geology Institute, National Autonomous University of México, 3000 Avenida Universidad, Coyoacán, México City 04360, Mexico.
authors.forename: Blanca
authors.initials: B
authors.lastname: Prado
authors.affiliation: Geology Institute, National Autonomous University of México, 3000 Avenida Universidad, Coyoacán, México City 04360, Mexico.
authors.forename: Anouck
authors.initials: A
authors.lastname: Ferroud
authors.affiliation: Geology Institute, National Autonomous University of México, 3000 Avenida Universidad, Coyoacán, México City 04360, Mexico.
authors.forename: Narcedalia
authors.initials: N
authors.lastname: Juayerk
authors.affiliation: International Hydrological Programme (IHP), UNESCO, Paris, France. Electronic address: bjimenezc@iingen.unam.mx.
authors.forename: Blanca
authors.initials: B
authors.lastname: Jiménez-Cisneros
mesh_terms: D000327:Adsorption; D057914:Agricultural Irrigation; D004958:Estradiol / Q000032:analysis*; D004970:Estrone / Q000032:analysis*; D007052:Ibuprofen / Q000032:analysis*; D011891:Rain; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D004958:Estradiol; D004970:Estrone; D007052:Ibuprofen; D012987:Soil; D012989:Soil Pollutants; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Agricultural soils; Endocrine disrupting chemicals; Environmental fate; Organic micropollutants; Sorption; Wastewater reuse