Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal
Amongst the many treatments available for the removal of emerging contaminants in wastewater, microalgal cultures have been shown to be effective. However, the effectiveness of exposure of a native microalgal consortium to emerging contaminants such as bisphenol-A (BPA) and triclosan (TCS) to determ...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323006218 |
| _version_ | 1797744118612361216 |
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| author | Karina Atengueño-Reyes Sharon B. Velasquez-Orta Isaura Yáñez-Noguez Ignacio Monje-Ramirez Petia Mijaylova-Nacheva Alma Chávez-Mejía MaríaTeresa Orta Ledesma |
| author_facet | Karina Atengueño-Reyes Sharon B. Velasquez-Orta Isaura Yáñez-Noguez Ignacio Monje-Ramirez Petia Mijaylova-Nacheva Alma Chávez-Mejía MaríaTeresa Orta Ledesma |
| author_sort | Karina Atengueño-Reyes |
| collection | DOAJ |
| description | Amongst the many treatments available for the removal of emerging contaminants in wastewater, microalgal cultures have been shown to be effective. However, the effectiveness of exposure of a native microalgal consortium to emerging contaminants such as bisphenol-A (BPA) and triclosan (TCS) to determine the half-maximum effective concentrations (EC50) has not yet been determined. The effect on growth and nutrient removal of such a treatment as well as on the production of biomolecules such as carbohydrates, lipids, and proteins are, at present, unknown. In this study, the EC50 of BPA and TCS (96-hour experiments) was determined using a consortium of native microalgae (Scenedesmus obliquus and Desmodesmus sp.) to define the maximum tolerance to these contaminants. The effect of BPA and TCS in synthetic wastewater (SWW) was investigated in terms of microalgal growth, chlorophyll a (Chl-a), carbohydrate, lipid, and protein content, as well as nutrient removal. Assays were performed in heterotrophic conditions (12/12 light/dark cycles). EC50-96 h values of 17 mg/L and 325 µg/L for BPA and TCS, respectively, were found at 72 h. For an initial microalgal inoculum of ≈ 300 mg TSS/L (total suspended solids per litre), growth increased by 16.1% when exposed to BPA and 17.78% for TCS. At ≈ 500 mg TSS/L, growth increased by 8.25% with BPA and 9.92% with TCS, respectively. At the EC50-96 h concentrations determined in the study, BPA and TCS did not limit the growth of microalgae in wastewater. Moreover, they were found to stimulate the content of Chl-a, carbohydrates, lipids, proteins, and enhance nutrient removal. Availability of data and material: Data sharing not applicable to this article as no datasets were generated or analysed during the present study. |
| first_indexed | 2024-03-12T15:05:10Z |
| format | Article |
| id | doaj.art-389fdaf4d79a4ebb85acfe107e112195 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-12T15:05:10Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-389fdaf4d79a4ebb85acfe107e1121952023-08-13T04:51:40ZengElsevierEcotoxicology and Environmental Safety0147-65132023-09-01262115117Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removalKarina Atengueño-Reyes0Sharon B. Velasquez-Orta1Isaura Yáñez-Noguez2Ignacio Monje-Ramirez3Petia Mijaylova-Nacheva4Alma Chávez-Mejía5MaríaTeresa Orta Ledesma6Instituto de Ingeniería, Universidad Nacional Autónoma de México, Av. Universidad 3000, Alcaldía Coyoacán, CP 04510 Ciudad de México, MexicoSchool of Chemical Engineering and Advanced Materials, Merz Court, Newcastle University, Newcastle upon Tyne NE1 7RU, UKInstituto de Ingeniería, Universidad Nacional Autónoma de México, Av. Universidad 3000, Alcaldía Coyoacán, CP 04510 Ciudad de México, MexicoInstituto de Ingeniería, Universidad Nacional Autónoma de México, Av. Universidad 3000, Alcaldía Coyoacán, CP 04510 Ciudad de México, MexicoInstituto Mexicano de Tecnología del Agua, Paseo Cuauhnahuac 8532, Progreso, Jiutepec, Morelos 62550, MexicoInstituto de Ingeniería, Universidad Nacional Autónoma de México, Av. Universidad 3000, Alcaldía Coyoacán, CP 04510 Ciudad de México, MexicoInstituto de Ingeniería, Universidad Nacional Autónoma de México, Av. Universidad 3000, Alcaldía Coyoacán, CP 04510 Ciudad de México, Mexico; Corresponding author.Amongst the many treatments available for the removal of emerging contaminants in wastewater, microalgal cultures have been shown to be effective. However, the effectiveness of exposure of a native microalgal consortium to emerging contaminants such as bisphenol-A (BPA) and triclosan (TCS) to determine the half-maximum effective concentrations (EC50) has not yet been determined. The effect on growth and nutrient removal of such a treatment as well as on the production of biomolecules such as carbohydrates, lipids, and proteins are, at present, unknown. In this study, the EC50 of BPA and TCS (96-hour experiments) was determined using a consortium of native microalgae (Scenedesmus obliquus and Desmodesmus sp.) to define the maximum tolerance to these contaminants. The effect of BPA and TCS in synthetic wastewater (SWW) was investigated in terms of microalgal growth, chlorophyll a (Chl-a), carbohydrate, lipid, and protein content, as well as nutrient removal. Assays were performed in heterotrophic conditions (12/12 light/dark cycles). EC50-96 h values of 17 mg/L and 325 µg/L for BPA and TCS, respectively, were found at 72 h. For an initial microalgal inoculum of ≈ 300 mg TSS/L (total suspended solids per litre), growth increased by 16.1% when exposed to BPA and 17.78% for TCS. At ≈ 500 mg TSS/L, growth increased by 8.25% with BPA and 9.92% with TCS, respectively. At the EC50-96 h concentrations determined in the study, BPA and TCS did not limit the growth of microalgae in wastewater. Moreover, they were found to stimulate the content of Chl-a, carbohydrates, lipids, proteins, and enhance nutrient removal. Availability of data and material: Data sharing not applicable to this article as no datasets were generated or analysed during the present study.http://www.sciencedirect.com/science/article/pii/S0147651323006218Bisphenol ATriclosan (TCS)MicroalgaeBiomoleculesWastewaterEC50-96 h |
| spellingShingle | Karina Atengueño-Reyes Sharon B. Velasquez-Orta Isaura Yáñez-Noguez Ignacio Monje-Ramirez Petia Mijaylova-Nacheva Alma Chávez-Mejía MaríaTeresa Orta Ledesma Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal Ecotoxicology and Environmental Safety Bisphenol A Triclosan (TCS) Microalgae Biomolecules Wastewater EC50-96 h |
| title | Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal |
| title_full | Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal |
| title_fullStr | Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal |
| title_full_unstemmed | Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal |
| title_short | Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal |
| title_sort | microalgal consortium tolerance to bisphenol a and triclosan in wastewater and their effects on growth biomolecule content and nutrient removal |
| topic | Bisphenol A Triclosan (TCS) Microalgae Biomolecules Wastewater EC50-96 h |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323006218 |
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