Ciprofloxacin Removal from Aqueous Media Using Floating Treatment Wetlands Supported by Immobilized Bacteria

Syed Wajid Ali Shah, Mujaddad ur Rehman, Muhammad Tauseef, Ejazul Islam, Azam Hayat, Samina Iqbal, Muhammad Arslan () and Muhammad Afzal ()
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Syed Wajid Ali Shah: National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Pakistan Institute of Engineering and Applied Sciences (PIEAS), Faisalabad 38000, Pakistan
Mujaddad ur Rehman: Department of Microbiology, Abbottabad University of Science and Technology, Abbottabad 22500, Pakistan
Muhammad Tauseef: Department of Physics, Kohsar University, Murree 47118, Pakistan
Ejazul Islam: National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Pakistan Institute of Engineering and Applied Sciences (PIEAS), Faisalabad 38000, Pakistan
Azam Hayat: Department of Microbiology, Abbottabad University of Science and Technology, Abbottabad 22500, Pakistan
Samina Iqbal: National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Pakistan Institute of Engineering and Applied Sciences (PIEAS), Faisalabad 38000, Pakistan
Muhammad Arslan: Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
Muhammad Afzal: National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Pakistan Institute of Engineering and Applied Sciences (PIEAS), Faisalabad 38000, Pakistan

Sustainability, 2022, vol. 14, issue 21, 1-14

Abstract: The unwanted occurrence of antibiotics in the environment is an emerging concern of non-target toxicity and antimicrobial resistance. Floating treatment wetland (FTW) is a low-cost and ecofriendly wastewater remediation strategy; however, the effect of immobilized bacteria on its efficacy during the remediation of ciprofloxacin (CIP)-contaminated water has not been documented. In this study, Phragmites australis was planted to develop FTW, and it was augmented with a bacterial consortium ( Acinetobacter lwoffii ACRH76, Bacillus pumulis C2A1, and Acinetobacter sp. HN3), with and without immobilization for the remediation of CIP-contaminated (100 mg L −1 ) water. The augmentation of bacteria (immobilized or in suspension) in the FTWs significantly increased the elimination of CIP from the water. Maximum removal of CIP (97%), COD (92%), BOD (93%), and TOC (90%) from the water was observed in the FTWs having immobilized bacteria. This research revealed that the FTWs have tremendous potential to remove the CIP from the water and its removal efficiency can be enhanced via immobilized bacterial augmentation strategies.

Keywords: floating treatment wetlands; ciprofloxacin-contaminated water; bioaugmentation; immobilized bacterial cells; biodegradation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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