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Abdel-Shafy H, Moghazy R, Mansour M, Kerner M. Growth of microalgae adapted to high-light temperature conditions in different types of wastewater. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:3084-3094. [PMID: 38154795 PMCID: wst_2023_381 DOI: 10.2166/wst.2023.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
To obtain microalgae strains adapted to wastewater in the Mediterranean region, microalgae present in the Nile River were cultivated at both high-light temperature (HLT) and low-light temperature (LLT) conditions. It was found that the species which became dominant under HLT was chlorophyta of the genus Scenedesmus. In contrast, under LLT, bacillariophyta became dominant. The microalgae strain (Scenedesmus arcuatus) was subsequently isolated and cultivated in different types of primary treated wastewater under HLT and LLT conditions. The different types of primary treated wastewater were black water (BW), grey water (GW), and sewage water (SW). Growth rates reached during the exponential phase at HLT using GW, BW, and SW were between 0.38 and 0.4 (day-1). At LLT, 1.5-2.7 folds of lower growth rates were determined due to limitation by CO2. Removal of COD and inorganic N and P from sewage wastewater reached up to 88, 96, and 100%, respectively. Results thus indicate that microalgae adapted to the climate conditions can be efficiently used for COD removal and nutrient recovery from wastewater in the Mediterranean.
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Affiliation(s)
- Hussein Abdel-Shafy
- Water Pollution Research Department, National Research Centre, Dokki, Cairo, Egypt E-mail:
| | - Reda Moghazy
- Water Pollution Research Department, National Research Centre, Dokki, Cairo, Egypt
| | - Mona Mansour
- Analysis and Evaluation Department, Egyptian Petroleum Research Institute, 1 Ahmed El Zomor Street, Nasr City, Cairo, Egypt
| | - Martin Kerner
- SSC Strategic Science Consult GmbH, Beim Alten Gaswerk 5, Hamburg 22761, Germany
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Duarte JAP, Ribeiro AKN, de Carvalho P, Bortolini JC, Ostroski IC. Emerging contaminants in the aquatic environment: phytoplankton structure in the presence of sulfamethoxazole and diclofenac. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:46604-46617. [PMID: 36719587 PMCID: PMC9888349 DOI: 10.1007/s11356-023-25589-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Chemicals from anthropogenic activities such as domestic sewage, pesticide leaching, and improper chemical disposal have caused groundwater contamination. The presence of these emerging contaminants in the aquatic environment can change water quality and biota composition. Thus, this study investigates the effect of two emerging contaminants, anti-inflammatory drug diclofenac (DCF) and antibiotic sulfamethoxazole (SMX), on the aquatic environment, evaluating the phytoplankton community structure. A microcosm experiment was conducted with 16 sampling units, each one with 500 mL of water sample containing phytoplankton exposed to these drugs at different concentrations (0.1, 0.5, and 1.0 mg L-1). The experiment lasted 15 days, and samples were collected on days 0, 3, 5, 7, and 14 to evaluate the phytoplankton community, the concentrations of the drugs, and the nutrients in the samples. Six phytoplankton groups were identified, and diatoms and green algae were the most diverse and abundant groups. For the entire community, we identified differences between the days of the experiment, varying in the diversity and density of organisms, but not between the concentrations of the two drugs. Evaluating the groups separately, we identified differences in the abundance of cyanobacteria for the treatment with diclofenac and desmids for the treatment with sulfamethoxazole. We demonstrated that the presence of pharmaceuticals in freshwater ecosystems can somehow affect the phytoplankton community, especially the diversity and abundance of cyanobacteria and desmids. Therefore, our study indicates the importance of evaluating the presence of pharmaceuticals in freshwater ecosystems and their influence on aquatic organisms, as well as pharmaceuticals may be changing the structure of the aquatic environment.
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Affiliation(s)
| | | | - Priscilla de Carvalho
- Institute of Biological Sciences, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
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Helamieh M, Reich M, Bory S, Rohne P, Riebesell U, Kerner M, Kümmerer K. Blue-green light is required for a maximized fatty acid unsaturation and pigment concentration in the microalga Acutodesmus obliquus. Lipids 2022; 57:221-232. [PMID: 35460080 DOI: 10.1002/lipd.12343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/05/2022] [Accepted: 04/05/2022] [Indexed: 11/06/2022]
Abstract
Blue-green light is known to maximize the degree of fatty acid (FA) unsaturation in microalgae. However, knowledge on the particular waveband responsible for this stimulation of FA desaturation and its impact on the pigment composition in microalgae remains limited. In this study, Acutodesmus obliquus was cultivated for 96 h at 15°C with different light spectra (380-700 nm, 470-700 nm, 520-700 nm, 600-700 nm, and dark controls). Growth was monitored daily, and qualitative characterization of the microalgal FA composition was achieved via gas chromatography coupled with electron impact ionization mass spectrometry (GC-EI/MS). Additionally, a quantitative analysis of microalgal pigments was performed using high-performance liquid chromatography with diode array detection (HPLC-DAD). Spectra that included wavelengths between 470 and 520 nm led to a significantly higher percentage of the polyunsaturated fatty acids (PUFA) 18:3 and 16:4, compared to all other light conditions. However, no significant differences between the red light cultivations and the heterotrophic dark controls were observed for the FA 18:3 and 16:4. These results indicate, that exclusively the blue-green light waveband between 470 and 520 nm is responsible for a maximized FA unsaturation in A. obliquus. Furthermore, the growth and production of pigments were impaired if blue-green light (380-520 nm) was absent in the light spectrum. This knowledge can contribute to achieving a suitable microalgal pigment and FA composition for industrial purposes and must be considered in spectrally selective microalgae cultivation systems.
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Affiliation(s)
- Mark Helamieh
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany.,Strategic Science Consult Ltd, Hamburg, Germany
| | - Marco Reich
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany
| | - Sophie Bory
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany
| | - Philipp Rohne
- Institute of Pharmacy and Biochemistry, Therapeutical Life Sciences, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Ulf Riebesell
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | | | - Klaus Kümmerer
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany
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Mixed Contaminants: Occurrence, Interactions, Toxicity, Detection, and Remediation. Molecules 2022; 27:molecules27082577. [PMID: 35458775 PMCID: PMC9029723 DOI: 10.3390/molecules27082577] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 12/18/2022] Open
Abstract
The ever-increasing rate of pollution has attracted considerable interest in research. Several anthropogenic activities have diminished soil, air, and water quality and have led to complex chemical pollutants. This review aims to provide a clear idea about the latest and most prevalent pollutants such as heavy metals, PAHs, pesticides, hydrocarbons, and pharmaceuticals—their occurrence in various complex mixtures and how several environmental factors influence their interaction. The mechanism adopted by these contaminants to form the complex mixtures leading to the rise of a new class of contaminants, and thus resulting in severe threats to human health and the environment, has also been exhibited. Additionally, this review provides an in-depth idea of various in vivo, in vitro, and trending biomarkers used for risk assessment and identifies the occurrence of mixed contaminants even at very minute concentrations. Much importance has been given to remediation technologies to understand our current position in handling these contaminants and how the technologies can be improved. This paper aims to create awareness among readers about the most ubiquitous contaminants and how simple ways can be adopted to tackle the same.
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Krimech A, Helamieh M, Wulf M, Krohn I, Riebesell U, Cherifi O, Mandi L, Kerner M. Differences in adaptation to light and temperature extremes of Chlorella sorokiniana strains isolated from a wastewater lagoon. BIORESOURCE TECHNOLOGY 2022; 350:126931. [PMID: 35247554 DOI: 10.1016/j.biortech.2022.126931] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/24/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Presently, two Chlorella sorokiniana strains sampled during summer (CS-S) and winter (CS-W) from a maturation pond and isolated by dominance were studied on their behavior on temperature and light extremes in batch experiments. Although both strains showed no differences in their tolerance of temperatures up to 45 °C, the growth rates, pigment contents and fatty acid compositions in response to PAR at 700 and 1,500 µmol m-2sec-1 differed. CS-W was less affected by photoinhibition and maintained constantly high growth rates. High radiation resulted in both strains in an equivalent decrease of chlorophyll a and accessory pigments indicating that the latter did not function as a light filter. PUFAS (18:3 and 16:3) increased in CS-W at high radiation by > 60% and decreased in CS-S by 8 %. Results indicate that CS-W is highly favorable for mass cultivation particularly in outdoors, in which diurnal variations of solar radiation occur.
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Affiliation(s)
- Aafaf Krimech
- National Center for Studies and Research on Water and Energy, Cadi Ayyad University, Marrakech, Morocco; Laboratory of Water, Biodiversity, and Climate Change, Cadi Ayyad University, Marrakech, Morocco
| | - Mark Helamieh
- SSC Strategic Science Consult GmbH, Hamburg, Germany
| | - Melina Wulf
- SSC Strategic Science Consult GmbH, Hamburg, Germany
| | - Ines Krohn
- Universität Hamburg, Institute of Plant Science and Microbiology, Department of Microbiology and Biotechnology, Hamburg, Germany
| | - Ulf Riebesell
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Biological Oceanography, Kiel, Germany
| | - Ouafa Cherifi
- National Center for Studies and Research on Water and Energy, Cadi Ayyad University, Marrakech, Morocco; Laboratory of Water, Biodiversity, and Climate Change, Cadi Ayyad University, Marrakech, Morocco
| | - Laila Mandi
- National Center for Studies and Research on Water and Energy, Cadi Ayyad University, Marrakech, Morocco; Laboratory of Water, Biodiversity, and Climate Change, Cadi Ayyad University, Marrakech, Morocco
| | - Martin Kerner
- SSC Strategic Science Consult GmbH, Hamburg, Germany.
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Gondi R, Kavitha S, Yukesh Kannah R, Parthiba Karthikeyan O, Kumar G, Kumar Tyagi V, Rajesh Banu J. Algal-based system for removal of emerging pollutants from wastewater: A review. BIORESOURCE TECHNOLOGY 2022; 344:126245. [PMID: 34743994 DOI: 10.1016/j.biortech.2021.126245] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
The bioremediation of emerging pollutants in wastewater via algal biotechnology has been emerging as a cost-effective and low-energy input technological solution. However, the algal bioremediation technology is still not fully developed at a commercial level. The development of different technologies and new strategies to cater specific needs have been studied. The existence of multiple emerging pollutants and the selection of microalgal species is a major concern. The rate of algal bioremediation is influenced by various factors, including accidental contaminations and operational conditions in the pilot-scale studies. Algal-bioremediation can be combined with existing treatment technologies for efficient removal of emerging pollutants from wastewater. This review mainly focuses on algal-bioremediation systems for wastewater treatment and pollutant removal, the impact of emerging pollutants in the environment, selection of potential microalgal species, mechanisms involved, and challenges in removing emerging pollutants using algal-bioremediation systems.
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Affiliation(s)
- Rashmi Gondi
- Department of Life Sciences, Central University of Tamil Nadu, Neelakudi, Thiruvarur, Tamil Nadu, India
| | - S Kavitha
- Department of Civil Engineering, Anna University Regional Campus Tirunelveli, Tamil Nadu, India
| | - R Yukesh Kannah
- Department of Civil Engineering, National Institute of Technology Tiruchirappalli, Tiruchirappalli, Tamil Nadu, India
| | - Obulisamy Parthiba Karthikeyan
- Department of Engineering Technology, College of Technology, University of Houston, Houston, TX, USA; Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD, USA
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Vinay Kumar Tyagi
- Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - J Rajesh Banu
- Department of Life Sciences, Central University of Tamil Nadu, Neelakudi, Thiruvarur, Tamil Nadu, India.
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Helamieh M, Gebhardt A, Reich M, Kuhn F, Kerner M, Kümmerer K. Growth and fatty acid composition of Acutodesmus obliquus under different light spectra and temperatures. Lipids 2021; 56:485-498. [PMID: 34173670 DOI: 10.1002/lipd.12316] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/01/2021] [Accepted: 06/09/2021] [Indexed: 11/10/2022]
Abstract
The combined impact of temperature and light spectra on the fatty acid (FA) composition in microalgae has been sparsely investigated. The aim of this study was to investigate the interactions of light and temperature on the FA composition in Acutodesmus obliquus. For this purpose, A. obliquus was cultivated with different temperatures (20, 30, and 35°C), as well as broad light spectra (blue, green, and red light). Growth and FA composition were monitored daily. Microalgal FA were extracted, and a qualitative characterization was done by gas chromatography coupled with electron impact ionization mass spectrometry (GC-EI/MS). Compared to red light, green and blue light caused a higher percentage of the polyunsaturated fatty acids (PUFA) 16:4, 18:3, and 18:4, at all temperatures. The highest total percentage of these PUFA were observed at the lowest cultivation temperature and blue and green light. These data imply that a combination of lower temperatures and blue-green light (450-550 nm) positively influences the activity of specific FA-desaturases in A. obliquus. Additionally, a lower 16:1 trans/cis ratio was observed upon green and blue light treatment and lower cultivation temperatures. Remarkably, green light treatment resulted in a comparably high growth under all tested conditions. Therefore, a higher content of green light, compared to blue light might additionally lead to a higher biomass concentration. Microalgae cultivation with low temperatures and green light might therefore result in a suitable FA composition for the food industry and a comparably high biomass production.
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Affiliation(s)
- Mark Helamieh
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany.,Strategic Science Consult Ltd., Hamburg, Germany
| | | | - Marco Reich
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany
| | - Friedericke Kuhn
- Institute of Experimental Business Psychology, Leuphana University of Lüneburg, Lüneburg, Germany
| | | | - Klaus Kümmerer
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany
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