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The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization

Author

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  • Amin Mojiri

    (Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashihiroshima 739-8527, Japan
    These authors contributed equally to this work.)

  • Maedeh Baharlooeian

    (Department of Marine Biology, Faculty of Marine Science and Oceanography, Khorramshahr University of Marine Science and Technology, Khorramshahr 64199-34619, Iran
    These authors contributed equally to this work.)

  • Mohammad Ali Zahed

    (Faculty of Biological Sciences, Kharazmi University, Tehran 15719-14911, Iran)

Abstract

Antibiotics are frequently applied to treat bacterial infections in humans and animals. However, most consumed antibiotics are excreted into wastewater as metabolites or in their original form. Therefore, removal of antibiotics from aquatic environments is of high research interest. In this study, we investigated the removal of sulfamethoxazole (SMX) and ofloxacin (OFX) with Chaetoceros muelleri , a marine diatom. The optimization process was conducted using response surface methodology (RSM) with two independent parameters, i.e., the initial concentration of antibiotics and contact time. The optimum removal of SMX and OFX were 39.8% (0.19 mg L −1 ) and 42.5% (0.21 mg L −1 ) at the initial concentration (0.5 mg L −1 ) and contact time (6.3 days). Apart from that, the toxicity effect of antibiotics on the diatom was monitored in different SMX and OFX concentrations (0 to 50 mg L −1 ). The protein (mg L −1 ) and carotenoid (μg L −1 ) content increased when the antibiotic concentration increased up to 20 mg L −1 , while cell viability was not significantly affected up to 20 mg L −1 of antibiotic concentration. Protein content, carotenoid, and cell viability decreased during high antibiotic concentrations (more than 20 to 30 mg L −1 ). This study revealed that the use of Chaetoceros muelleri is an appealing solution to remove certain antibiotics from wastewater.

Suggested Citation

  • Amin Mojiri & Maedeh Baharlooeian & Mohammad Ali Zahed, 2021. "The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization," IJERPH, MDPI, vol. 18(3), pages 1-12, January.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:3:p:977-:d:485540
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    References listed on IDEAS

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    1. Amirreza Talaiekhozani & Sahar Joudaki & Farhad Banisharif & Zeinab Eskandari & Jinwoo Cho & Ghasem Moghadam & Shahabaldin Rezania, 2020. "Comparison of Azithromycin Removal from Water Using UV Radiation, Fe (VI) Oxidation Process and ZnO Nanoparticles," IJERPH, MDPI, vol. 17(5), pages 1-17, March.
    2. David Kwame Amenorfenyo & Xianghu Huang & Yulei Zhang & Qitao Zeng & Ning Zhang & Jiajia Ren & Qiang Huang, 2019. "Microalgae Brewery Wastewater Treatment: Potentials, Benefits and the Challenges," IJERPH, MDPI, vol. 16(11), pages 1-19, May.
    3. Bingbing Du & Qingxiang Yang & Ruifei Wang & Ruimin Wang & Qiang Wang & Yuan Xin, 2019. "Evolution of Antibiotic Resistance and the Relationship between the Antibiotic Resistance Genes and Microbial Compositions under Long-Term Exposure to Tetracycline and Sulfamethoxazole," IJERPH, MDPI, vol. 16(23), pages 1-15, November.
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    1. Abdullah Kaviani Rad & Angelika Astaykina & Rostislav Streletskii & Yeganeh Afsharyzad & Hassan Etesami & Mehdi Zarei & Siva K. Balasundram, 2022. "An Overview of Antibiotic Resistance and Abiotic Stresses Affecting Antimicrobial Resistance in Agricultural Soils," IJERPH, MDPI, vol. 19(8), pages 1-27, April.

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