Sorption behavior of 20 wastewater originated micropollutants in groundwater — Column experiments with pharmaceutical residues and industrial agents

Contrasting mechanisms of metoprolol uptake on kaolinite and talc

“…In a column study, MT sorption on medium sand with 6% of clay and silt fraction and a CEC value of 44 mmol c / kg resulted in a K d of 2.3 L/kg with almost 100% attribution to electrostatic interactions [41]. A K d > 2.47 L/kg, due to incomplete breakthrough, was obtained from a column study using sandy sediments from a bank filtration site in Berlin, Germany [6].…”

“…Both ionic and hydrophobic interactions played important roles for the adsorption of b-blockers on charcoal [42]. On the contrary, the estimated solute distribution coefficient K d value of MT was about 0 L/kg [6], indicating no adsorption of MT on solid surfaces.…”

The effect of feed water dissolved organic carbon concentration and composition on organic micropollutant removal and microbial diversity in soil columns simulating river bank filtration

“…Several studies have indicated that OMP sorption is small compared to OMP biodegradation with retardation factors close or equal to 1 for most OMPs (Bertelkamp et al, 2014;Burke et al, 2013;Henzler et al, 2014). Hence, the retardation factor in the advection-dispersion equation was set to 1 and only the biodegradation rate (m) was determined.…”

A laboratory-scale column study comparing organic micropollutant removal and microbial diversity for two soil types

“…Although OMP sorption and biodegradation behaviour in soil passage systems has been investigated in laboratory-scale column studies (Burke et al, 2013;Hoppe-Jones et al, 2012;Hoppe-Jones et al, 2010;Maeng et al, 2011a;Maeng et al, 2012;Scheytt et al, 2004), these were mostly limited to one specific soil type (e.g. clean filter sand) and/or water quality.…”