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Dr. Maedeh Baharlooeian
Phd candidate

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0 Bioremediation
0 Marine Pollution
0 Wastewater Treatment
0 water pollution
0 Ecotoxycology

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Journal article
Published: 22 January 2021 in International Journal of Environmental Research and Public Health
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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.

ACS Style

Amin Mojiri; Maedeh Baharlooeian; Mohammad Zahed. The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization. International Journal of Environmental Research and Public Health 2021, 18, 977 .

AMA Style

Amin Mojiri, Maedeh Baharlooeian, Mohammad Zahed. The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization. International Journal of Environmental Research and Public Health. 2021; 18 (3):977.

Chicago/Turabian Style

Amin Mojiri; Maedeh Baharlooeian; Mohammad Zahed. 2021. "The Potential of Chaetoceros muelleri in Bioremediation of Antibiotics: Performance and Optimization." International Journal of Environmental Research and Public Health 18, no. 3: 977.

Journal article
Published: 22 December 2020 in Microorganisms
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Using microalgae to remove pharmaceuticals and personal care products (PPCPs) micropollutants (MPs) have attracted considerable interest. However, high concentrations of persistent PPCPs can reduce the performance of microalgae in remediating PPCPs. Three persistent PPCPs, namely, carbamazepine (CBZ), sulfamethazine (SMT) and tramadol (TRA), were treated with a combination of Chaetoceros muelleri and biochar in a photobioreactor during this study. Two reactors were run. The first reactor comprised Chaetoceros muelleri, as the control, and the second reactor comprised Chaetoceros muelleri and biochar. The second reactor showed a better performance in removing PPCPs. Through the response surface methodology, 68.9% (0.330 mg L−1) of CBZ, 64.8% (0.311 mg L−1) of SMT and 69.3% (0.332 mg L−1) of TRA were removed at the initial concentrations of MPs (0.48 mg L−1) and contact time of 8.1 days. An artificial neural network was used in optimising elimination efficiency for each MP. The rational mean squared errors and high R2 values showed that the removal of PPCPs was optimised. Moreover, the effects of PPCPs concentration (0–100 mg L−1) on Chaetoceros muelleri were studied. Low PPCP concentrations (−1) increased the amounts of chlorophyll and proteins in the microalgae. However, cell viability, chlorophyll and protein contents dramatically decreased with increasing PPCPs concentrations (>40 mg L−1).

ACS Style

Amin Mojiri; Maedeh Baharlooeian; Reza Andasht Kazeroon; Hossein Farraji; Ziyang Lou. Removal of Pharmaceutical Micropollutants with Integrated Biochar and Marine Microalgae. Microorganisms 2020, 9, 4 .

AMA Style

Amin Mojiri, Maedeh Baharlooeian, Reza Andasht Kazeroon, Hossein Farraji, Ziyang Lou. Removal of Pharmaceutical Micropollutants with Integrated Biochar and Marine Microalgae. Microorganisms. 2020; 9 (1):4.

Chicago/Turabian Style

Amin Mojiri; Maedeh Baharlooeian; Reza Andasht Kazeroon; Hossein Farraji; Ziyang Lou. 2020. "Removal of Pharmaceutical Micropollutants with Integrated Biochar and Marine Microalgae." Microorganisms 9, no. 1: 4.