Removal of selected endocrine disrupters in activated sludge systems: effect of sludge retention time on their sorption and biodegradation

Bioresource Technology
Athanasios S StasinakisNikolaos S Thomaidis

Abstract

The fate of three endocrine-disrupting compounds (EDCs), namely 4-n-nonylphenol (4-n-NP), triclosan (TCS) and bisphenol A (BPA), was studied in activated sludge process. The effect of sludge retention time (SRT) on their sorption and biodegradation was also investigated. Three continuous-flow activated sludge systems were used, operating at SRT of 3, 10 and 20 days, respectively. Batch experiments with biomass originated from the aforementioned systems showed that 4-n-NP and TCS are significantly sorbed on the suspended solids, while BPA to a lesser extent. The sorption affinity of target compounds did not seem to be affected by SRT, with the exception of 4-n-NP for which higher values of sorption coefficients were calculated at SRT of 3 days. The operation of continuous-flow systems in the presence of 10-40 microgL(-1) of EDCs indicated that more than 90%, 94% and 97% of BPA, TCS and 4-n-NP, respectively, can be removed during the activated sludge process in systems operating at SRT of 3-20 days. Determination of EDCs in the dissolved and particulate phase and calculation of their mass flux revealed that biodegradation was the principal removal mechanism of EDCs. For SRT values used in this study, this parameter does not seem ...Continue Reading

Citations

Feb 8, 2013·Analytical and Bioanalytical Chemistry·Bruce PetrieElise Cartmell
Sep 4, 2012·Environmental Science & Technology·Damian E HelblingKathrin Fenner
Sep 20, 2012·Environmental Technology·Danelle DhaniramaNikolaos Voulvoulis
Nov 8, 2011·Environmental Science and Pollution Research International·Gilles BedouxBarbara Le Bot
Jul 10, 2012·Journal of Hazardous Materials·Nuno RatolaAthanasios Katsoyiannis
Sep 21, 2017·Environmental Science and Pollution Research International·André Luiz PereiraSandra Rosa Pereira
Jan 29, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Olcayto Keskinkan, Behzat Balci
Mar 30, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jian Lin ChenNaresh Singhal
Apr 13, 2019·Environmental Monitoring and Assessment·Arthur Couto Neves, Marcos Paulo Gomes Mol
Sep 13, 2011·Water Environment Research : a Research Publication of the Water Environment Federation·Paola VerlicchiCarlo Zaffaroni
Sep 6, 2020·The Science of the Total Environment·Prangya R RoutRao Y Surampalli
Jan 10, 2021·International Journal of Environmental Research and Public Health·Elena KoumakiAndreas Andreadakis
May 26, 2021·The Science of the Total Environment·E Ferrer-PolonioI Amorós-Muñoz

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.