Ciprofloxacin removal during secondary domestic wastewater treatment in high rate algal ponds

Andrea Hom-Diaz; Zane N. Norvill; Paqui Blánquez; Teresa Vicent; Benoit Guieysse

doi:10.1016/j.chemosphere.2017.03.125

Ciprofloxacin removal during secondary domestic wastewater treatment in high rate algal ponds

Andrea Hom-Diaz, Zane N. Norvill, Paqui Blánquez, Teresa Vicent, Benoit Guieysse

Department of Chemical, Biological and Environmental Engineering

Research output: Contribution to journal › Article › Research › peer-review

27 Citations (Scopus)

Abstract

© 2017 Elsevier Ltd This study investigated the removal of antibiotic ciprofloxacin during the treatment of real wastewater using high rate algal ponds (HRAP). When spiked at 2 mg/L into primary domestic wastewater, ciprofloxacin (CPX) was efficiently removed from laboratory scale photobioreactors continuously operated under various durations of artificial illumination and hydraulic residence times. Subsequent batch tests conducted with reactor microcosms showed CPX removal was mainly caused by photodegradation during daytime, and sorption to biomass during night time. These findings were confirmed during an experiment conducted in a 1000 L pilot HRAP operated outdoors, as well as during outdoor batch assays conducted using pilot HRAP microcosms. While these results highlight a potentially interesting treatment capacity in comparison to conventional biological treatment, further research must confirm these findings at relevant pollutant concentration (ng-μg/L) and determine the fate and potential toxicity of degradation products.

Original language	English
Pages (from-to)	33-41
Journal	Chemosphere
Volume	180
DOIs	https://doi.org/10.1016/j.chemosphere.2017.03.125
Publication status	Published - 1 Jan 2017

Keywords

Ciprofloxacin
High rate algal ponds
Microalgae
Raceway ponds
Wastewater

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title = "Ciprofloxacin removal during secondary domestic wastewater treatment in high rate algal ponds",

abstract = "{\textcopyright} 2017 Elsevier Ltd This study investigated the removal of antibiotic ciprofloxacin during the treatment of real wastewater using high rate algal ponds (HRAP). When spiked at 2 mg/L into primary domestic wastewater, ciprofloxacin (CPX) was efficiently removed from laboratory scale photobioreactors continuously operated under various durations of artificial illumination and hydraulic residence times. Subsequent batch tests conducted with reactor microcosms showed CPX removal was mainly caused by photodegradation during daytime, and sorption to biomass during night time. These findings were confirmed during an experiment conducted in a 1000 L pilot HRAP operated outdoors, as well as during outdoor batch assays conducted using pilot HRAP microcosms. While these results highlight a potentially interesting treatment capacity in comparison to conventional biological treatment, further research must confirm these findings at relevant pollutant concentration (ng-μg/L) and determine the fate and potential toxicity of degradation products.",

keywords = "Ciprofloxacin, High rate algal ponds, Microalgae, Raceway ponds, Wastewater",

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AU - Hom-Diaz, Andrea

AU - Norvill, Zane N.

AU - Blánquez, Paqui

AU - Vicent, Teresa

AU - Guieysse, Benoit

PY - 2017/1/1

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AB - © 2017 Elsevier Ltd This study investigated the removal of antibiotic ciprofloxacin during the treatment of real wastewater using high rate algal ponds (HRAP). When spiked at 2 mg/L into primary domestic wastewater, ciprofloxacin (CPX) was efficiently removed from laboratory scale photobioreactors continuously operated under various durations of artificial illumination and hydraulic residence times. Subsequent batch tests conducted with reactor microcosms showed CPX removal was mainly caused by photodegradation during daytime, and sorption to biomass during night time. These findings were confirmed during an experiment conducted in a 1000 L pilot HRAP operated outdoors, as well as during outdoor batch assays conducted using pilot HRAP microcosms. While these results highlight a potentially interesting treatment capacity in comparison to conventional biological treatment, further research must confirm these findings at relevant pollutant concentration (ng-μg/L) and determine the fate and potential toxicity of degradation products.

KW - Ciprofloxacin

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KW - Microalgae

KW - Raceway ponds

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