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Publikationstyp
Wissenschaftlicher Artikel
Erscheinungsjahr
2018
Simulating effluent organic matter competition in micropollutant adsorption onto activated carbon using a surrogate competitor
Simulating effluent organic matter competition in micropollutant adsorption onto activated carbon using a surrogate competitor
Autor:innen
Herausgeber
Quelle
Environmental Science & Technology
52 (2018), Heft 14, 1 Onlineressource (Pages 7859-7866)
52 (2018), Heft 14, 1 Onlineressource (Pages 7859-7866)
Schlagwörter
Zitation
DITTMAR, Stefan, Frederik ZIETZSCHMANN, Maike MAI und Aki Sebastian RUHL, 2018. Simulating effluent organic matter competition in micropollutant adsorption onto activated carbon using a surrogate competitor. Environmental Science & Technology [online]. 2018. Bd. 52 (2018), Heft 14, 1 Onlineressource (Pages 7859-7866). DOI 10.60810/openumwelt-422. Verfügbar unter: https://openumwelt.de/handle/123456789/5637
Zusammenfassung englisch
Adsorption onto activated carbon is a promising option for removing organic micropollutants (OMPs) from wastewater treatment plant (WWTP) effluents. The heterogeneity of activated carbons and adsorption competition between OMPs and adsorbable compounds of the effluent organic matter (EfOM) complicate the prediction of OMP removals. Thus, reliable and simple test systems are desirable. For this study, batch experiments with powdered activated carbon (PAC) were carried out to examine methyl orange (MO) as a selected surrogate competitor to simulate EfOM adsorption competition. MO solutions were spiked with carbamazepine (CBZ) as an indicator substance for well-adsorbing OMPs. On the basis of CBZ adsorption isotherms in WWTP effluents, MO concentrations for batch test solutions with identical adsorption competition toward CBZ were calculated. The calculations were performed according to an empirical model of CBZ adsorption in the presence of MO, since predictions employing the ideal adsorbed solution theory (IAST) proved to be inaccurate. Comparative batch tests with five different PACs were conducted with WWTP effluent and respective MO batch test solutions. Except for one PAC, the achieved CBZ removals were very similar in WWTP effluent and the test solution. Additionally, a universal correlation between MO and CBZ removals was found for four PACs. Quelle: https://pubs.acs.org/