Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Growth and Prevalence of Antibiotic-Resistant Bacteria in Waste from Pagla Treatment Plant

Version 1 : Received: 13 July 2023 / Approved: 13 July 2023 / Online: 14 July 2023 (07:57:19 CEST)

How to cite: Huda, N.; Nahar, G. N.; Hossain, T.; Rahman, A.; Rus’d, A. A.; Ahmed, T. Growth and Prevalence of Antibiotic-Resistant Bacteria in Waste from Pagla Treatment Plant. Preprints 2023, 2023070935. https://doi.org/10.20944/preprints202307.0935.v1 Huda, N.; Nahar, G. N.; Hossain, T.; Rahman, A.; Rus’d, A. A.; Ahmed, T. Growth and Prevalence of Antibiotic-Resistant Bacteria in Waste from Pagla Treatment Plant. Preprints 2023, 2023070935. https://doi.org/10.20944/preprints202307.0935.v1

Abstract

Antibiotics are released into the environment either directly in an unchanged form or in a partially metabolized form. The discharge is usually through untreated waste or industrial treatment effluents. The potential concern is the uptake of these antibiotics by crops irrigated by treated wastewater. This study collected wastewater from eight points at the Pagla, Kadamtali, Dhaka treatment plant. Here we consider three crucial antibiotics, Doxycycline, Ciprofloxacin, and Tetracycline, used mainly during the last two years of the pandemic. A PDA detector was used in high-performance liquid chromatography (HPLC) analysis to determine the raw and processed effluent antibiotics. The most frequently seen antibiotics in natural wastewater were Doxycycline and Ciprofloxacin, with the highest concentration of 0.23µgL-1and 0.20 µgL-1(raw water), respectively. Tetracycline was not detected in natural water. Contrarily, Doxycycline was discovered in the Pagla plant's completed water and had the highest concentration (0.12 gL-1), whereas Ciprofloxacin and Tetracycline were not found in the dead water. The findings of this study showed that Doxycycline was still present in both the raw and processed effluent. Both natural and finished wastewater was subjected to a microbial-resistant test in the presence of all three antibiotics. The results revealed that the samples detected both heterotrophic bacteria and total coliform. The viable aerobic heterotrophic bacteria ranged between 5.421 and 4.754 log cfu/ml. Total bacteria load gradually decreased in the finished wastewater.

Keywords

antibiotic-resistant; doxycycline; microorganisms; ecosystems

Subject

Biology and Life Sciences, Aquatic Science

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