Article
Environmental Sciences
Stephen Dayana Priyadharshini, Palanisamy Suresh Babu, Sivasubramanian Manikandan, Ramasamy Subbaiya, Muthusamy Govarthanan, Natchimuthu Karmegam
Summary: The use of algae for wastewater treatment is gaining interest due to its potential for nutrient and pollutant removal. This sustainable approach can lead to cost reductions and generate renewable bioenergy options.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Martin Kizovsky, Zdenek Pilat, Mykola Mylenko, Pavel Hrouzek, Jan Kuta, Radim Skoupy, Vladislav Krzyzanek, Kamila Hrubanova, Olga Adamczyk, Jan Jezek, Silvie Bernatova, Tereza Klementova, Alzbeta Gjevik, Martin Siler, Ota Samek, Pavel Zemanek
Summary: Selenium, both a commercial element and essential micronutrient, is often lacking in the general population but can be supplemented using green algae cultivated in selenium-rich environments. Raman microspectroscopy proves to be a fast, reliable, and non-destructive method for measuring selenium concentration in living algal cells, showing a correlation between Raman signal intensity and total selenium concentration. It is also demonstrated that active cellular transport is necessary for selenium accumulation and that intracellular selenium can transform into an insoluble elemental form.
Review
Environmental Sciences
Omar A. Vazquez, Md Saydur Rahman
Summary: Ocean and land plastic debris degrade into microplastics, posing a threat to flora and fauna. Global studies confirm widespread distribution of microplastics as environmental pollutants.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2021)
Article
Environmental Sciences
Magdalena Toporowska
Summary: This study demonstrates the degradation of microcystins by Spirodela polyrhiza and its associated microorganisms under laboratory conditions. The strongest degradation rate was observed for MC-RR, followed by MC-LR, while MC-LF showed relatively stability. The microorganisms associated with S. polyrhiza were found to be responsible for the observed degradation of microcystins.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Biotechnology & Applied Microbiology
Martina Buckova, Jitka Hegrova, Vilma Jandova, Josef Svoboda, Roman Licbinsky
Summary: Ecotoxicological tests on green alga Desmodesmus subspicatus were conducted to determine the toxicity of environmental samples. A method using ICP-MS/MS was optimized for analyzing the bioaccumulation of chromium, zinc, potassium, phosphorus, and sulphur by the algae. The results showed that the concentration of Cr and Zn in the algal cells increased with increasing concentrations of the toxicant, while the concentration of K decreased and the concentration of sulphur initially increased and then decreased. The concentration of P in the cells increased with increasing toxicant concentration.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Martina Buckova, Jitka Hegrova, Vilma Jandova, Josef Svoboda, Jiri Huzlik, Roman Licbinsky
Summary: This study assessed the toxicity of K2Cr2O7, ZnCl2 and NiCl2.6H(2)O on the green alga Desmodesmus subspicatus. The results showed that Ni was the most toxic, followed by Cr and Zn. The toxicity and accumulation of Zn and Cr decreased over time, while Ni and the mixtures showed increased toxicity and accumulation. There was a significant correlation between metal accumulation in the cells and growth rate inhibition. The content of selected biogenic elements in algal cells decreased over time, with Ni-treated groups having higher element concentrations compared to other groups.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Multidisciplinary Sciences
Ragaa A. Hamouda, Abrar M. Alhumairi, Amna A. Saddiq
Summary: The ability of green alga Chlorella vulgaris, blue-green alga Synechococcus sp, and its consortium to grow and degrade kerosene was investigated in this study. The results showed that the algae consortium exhibited the best growth and C. vulgaris produced the highest lipid content after 15 days of cultivation with 1% kerosene. This study suggests that a consortium of algae can absorb and remove kerosene from water while producing biofuels like biodiesel and petroleum-based fuels.
Article
Environmental Sciences
Jichao Zhang, Zijun Ye, Liping Huang, Qianyu Zhao, Kaige Dong, Wei Zhang
Summary: This study investigates the biotransformation and bioaccumulation of arsenobetaine (AsB) in mouse tissues, and finds that AsB undergoes biotransformation to inorganic arsenic (As) in mammals, indicating potential health risks associated with long-term AsB intake in mammals.
Article
Environmental Sciences
M. Topal, E. I. Arslan Topal, E. Obek
Summary: The study demonstrates the efficiency of utilizing Cladophora fracta to bioaccumulate and remove toxic pollutants from mine gallery waters, with high concentrations of heavy metals such as Cr, Mn, Fe, Ba, Pb, Cd, and As. The calculated bioconcentration factor and metal pollution index highlight its potential in purifying mine gallery waters.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Review
Environmental Sciences
Aziz-Ur-Rahim Bacha, Iqra Nabi, Muhammad Zaheer, Wenbiao Jin, Lei Yang
Summary: Plastic waste has received significant research attention due to its accumulation, environmental issues, and impact on living organisms. There is an urgent need to remove plastic waste from the environment, and biodegradation is a promising treatment method. However, there is limited review on the bio-decomposition of plastics and the existing microbial species involved. This study provides an overview of influencing factors, existing species, and research gaps in biodegradation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Alan Rempel, Julia Pedo Gutkoski, Mateus Torres Nazari, Gabrielle Nadal Biolchi, Vitor Augusto Farina Cavanhi, Helen Treichel, Luciane Maria Colla
Summary: Emerging contaminants (EC) have been detected in effluents and drinking water, with concentrations that can harm a variety of organisms. Various technologies have been developed to treat these compounds, either for complete removal or degradation into less toxic by-products. Some techniques, such as adsorption, advanced oxidative processes, membrane separation processes, and bioremediation through microalgal metabolism, have been identified through thematic maps.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Engineering, Environmental
Alok Kumar, Amrita Nighojkar, Payal Varma, Niranjana Jaya Prakash, Balasubramanian Kandasubramanian, Karl Zimmermann, Fuhar Dixit
Summary: Water is essential for all sectors, with agriculture accounting for 70% of its use globally. Human activities from various industries have led to the release of contaminants into water systems, causing harm to the ecosystem and organisms. Algae-based methods, including biosorption, bioaccumulation, biotransformation, and biodegradation, show potential in efficiently removing organic pollutants. This paper provides detailed information on these processes, along with the genetic alteration of algal biomass, highlighting the advantages of genetic engineering and mutations for enhanced removal efficiency without secondary toxicity.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Abdul Mannan Zafar, Hasan Al Mosteka, Ashraf Aly Hassan
Summary: In this study, biodesalination was performed using four different microalgal strains in immobi-lized method. The results showed that C. reinhardtii (1:1) had the highest elimination capacity for chloride ion, T. variabilis (1:1) had the highest chlorophyll content, and cell leaching was measured for all strains. Oxygen content decreased with depth, indicating growth occurred closer to the surface. Immobilization increased algae's salt tolerance capacity and prolonged cellular life span. It is recommended to use an immobilized treatment method with a more efficient salt-removing microalgal strain for biodesalination.
Review
Environmental Sciences
Abhijeet Mahana, Olga I. Guliy, Surya Kant Mehta
Summary: Research has shown that metallic nanoparticles exhibit toxicity to algae but are less toxic compared to their corresponding metal ions. These nanoparticles can be transferred through aquatic food webs, but further investigation is needed on their internalization and toxicity mechanisms for algae.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Shuo Li, Yalun Yang, Shanshan Yang, Heshan Zheng, Yongjie Zheng, M. Jun, Dillirani Nagarajan, Sunita Varjani, Jo-Shu Chang
Summary: Plastics have become an essential part of life, but when they enter the environment, they break down into smaller fragments called microplastics (MPs) which are detrimental to the environment and human health. Bioremediation is considered the most environmentally friendly and cost-effective method for MP degradation, but there is limited knowledge about it. This review explores the sources and migration behavior of MPs, discusses biodegradation potential and mechanisms, analyzes the factors influencing biodegradation, and discusses the prospects and challenges of biodegradation technologies for MPs.