AI Article Synopsis
- The study investigates how well powdered activated carbon (PAC) removes various micropollutants from biologically treated municipal wastewater, focusing on pharmaceuticals, X-ray contrast media, and industrial chemicals.
- Most micropollutants, except for X-ray contrast media, are effectively removed with a PAC dosage of just 10 mg/L, indicating a cost-effective solution for water treatment.
- The research includes modeling the competition between background organic matter and micropollutants for adsorption sites on PAC, utilizing adsorption analysis and the Ideal Adsorption Solution Theory to simulate fixed-bed adsorber designs.
Article Abstract
The adsorption on powdered activated carbon (PAC) of ecotoxic or potentially ecotoxic micropollutants (ten pharmaceuticals, four X-ray contrast media, and eight industrial chemicals) present in a biologically treated municipal wastewater is studied. All but the X-ray contrast media are eliminated with high efficiency at an economically feasible PAC dosage of 10 mg/L. Based on the experimental data, the competition between the background organic matter and the micropollutant for the active sites of the adsorbent is modeled with the help of the adsorption and tracer analysis supported by the Ideal Adsorption Solution Theory. With granulated activated carbon, adsorption isotherms are determined by spiking. Based on these experimental data and modeled parameters, a lay-out of fixed-bed adsorbers may be simulated.
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