Article
Environmental Sciences
Yonglei Wang, Jie Xue, Wentao Sun, Wenjuan Chen, Baosen Liu, Li Jin, Jianing Li, Jingjing Li, Liping Tian, Xiaobo Wang
Summary: This study set up an ozone microbubble-enhanced air flotation experiment to explore the removal trends of algal cells and algal organic matter pollution. Compared with the traditional process, the absorption rate and utilization rate of ozone were increased, and the removal effect of algal organic matter was greatly improved. The enhanced air flotation process with ozone microbubbles shows high feasibility and a good effect in the removal and control of water eutrophication.
Article
Plant Sciences
Ivanka Teneva, Violeta Velikova, Detelina Belkinova, Dzhemal Moten, Balik Dzhambazov
Summary: Cyanobacteria are primary aquatic biomass producers that can produce potent toxins called cyanotoxins. This study found that cyanotoxins have inhibitory effects on the growth and motility of certain green algae, and can also affect their photosynthesis. These findings are important for understanding the allelopathic role of cyanotoxins on competing autotrophs in phytoplankton communities.
Article
Polymer Science
Fan Zhang, Jianglei Xiong, Cong Zhang, Xue Wu, Yuming Tian
Summary: The release of algal toxins in algae-containing water sources poses a serious threat to drinking water safety and human health. Conventional water treatment processes have limited ability to remove algae and algal toxins, especially those with a molecular weight of less than 1000 Da. This study applied a two-stage ultrafiltration process with large polysulfone hollow fiber membrane and small aromatic polyamide roll membrane to remove algae and algal toxins from water sources. The optimal operating conditions for ultrafiltration were identified using response surface methodology, resulting in efficient removal of algal toxins and biodegradable dissolved organic carbon.
Article
Green & Sustainable Science & Technology
Ali H. Jawad, Ahmed Saud Abdulhameed, S. N. Surip, Zeid A. Alothman
Summary: In this study, a novel hybrid multifunctional biocomposite of chitosan grafted-benzaldehyde/montmorillonite/algae (CHS-BZ/MT/AL) was designed and applied for highly efficient removal of brilliant green (BG) and reac-tive blue 19 (RB19) dyes from water. The effects of CHS-BZ/MT/AL dose, pH solution, and contact time on the removal rate of BG and RB19 dyes were investigated using response surface methodology. The experimental results showed that CHS-BZ/MT/AL had a maximum adsorption capacity of 899.5 mg/g for BG and 213.6 mg/g for RB19.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Margita Aleksova, Irina Schneider, Seniha Velisha, Eya Prodanova
Summary: This study examines the risk assessment and management system for the drinking water supply in Sofia city. The findings indicate a low risk of blue-green algae blooming and suggest effective control measures. The research contributes to the global database for surface water sources and can be utilized by other water supply companies.
Article
Engineering, Environmental
Qimeng Li, Xiang Li, Chuanqiao Zhou, Changchen Lu, Baogui Liu, Guoxiang Wang
Summary: The study showed that gas phase surface discharge non-thermal plasma combined with anion-exchange processes was effective in degrading and mineralizing intracellular compounds released from algal cells, reducing chlorophyll a concentration, converting organic nitrogen to non-toxic NO3--N rapidly, and ultimately decreasing the concentration of microcystin-LR. Additionally, the treatment process destroyed chromophoric functional groups, transformed aromatic carbon to aliphatic carbon, and exhibited high reusability during multiple adsorption-desorption cycles.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
O. D. Saliu, J. Ramontja
Summary: In this study, NiBi2O4 spinel was synthesized via a green sol-gel method and investigated for its performance in capacitive removal of dyes. The results showed that the NiBi2O4 spinel exhibited high removal efficiency and capacitive stability, making it a promising material for advanced applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Kamaliah Rosli, Ahmed Saud Abdulhameed, S. N. Surip, Zeid A. ALOthman, Ali H. Jawad
Summary: A green and effective adsorbent of chitosan/montmorillonite/algae (CHI/MMT/ALG) composite was developed to remove dyestuffs from aqueous solutions. The physicochemical characteristics of CHI/MMT/ALG were analyzed and the increased surface functionalities improved the adsorption of cationic and anionic dye molecules.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Environmental Sciences
Nor Azman Kasan, Siti Zafirah Mohamad Yusof, Hidayah Manan, Wan Mohd Khairul, Hazlina Ahamad Zakeri
Summary: High nutrient loading in aquatic environments has led to harmful algae blooms, particularly those dominated by blue-green algae that release toxins. This study investigated the inhibitory effects of thiourea derivatives on the growth of blue-green algae, successfully isolating a species from Kenyir Lake and synthesizing new compounds that effectively inhibited the algae's growth. Further research is needed to explore practical applications in natural environments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Multidisciplinary Sciences
Mathew P. White, Lewis R. Elliott, James Grellier, Theo Economou, Simon Bell, Gregory N. Bratman, Marta Cirach, Mireia Gascon, Maria L. Lima, Mare Lohmus, Mark Nieuwenhuijsen, Ann Ojala, Anne Roiko, P. Wesley Schultz, Matilda van den Bosch, Lora E. Fleming
Summary: Living near, recreating in, and feeling psychologically connected to the natural world are associated with better mental health. Data from an 18-country survey explored associations between mental health measures and exposures to different natural settings, as well as nature connectedness. Results show that green and coastal living spaces are linked to higher well-being, while recreational visits to green, inland-blue, and coastal-blue spaces are associated with positive well-being and lower mental distress. Nature connectedness and green space visits are also correlated with lower likelihood of using depression medication.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Yuko Makita, Shigekatsu Suzuki, Keiji Fushimi, Setsuko Shimada, Aya Suehisa, Manami Hirata, Tomoko Kuriyama, Yukio Kurihara, Hidefumi Hamasaki, Emiko Okubo-Kurihara, Kazutoshi Yoshitake, Tsuyoshi Watanabe, Masaaki Sakuta, Takashi Gojobori, Tomoko Sakami, Rei Narikawa, Haruyo Yamaguchi, Masanobu Kawachi, Minami Matsui
Summary: Photoreceptors are crucial for various developmental stages from green algae to land plants, and blue light sensing is essential for adapting to marine environments. The discovery of a chimeric dual orange/far-red and blue light receptor in Pycnococcus provasolii sheds light on the mechanisms of light adaptation in marine organisms.
NATURE COMMUNICATIONS
(2021)
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
Engineering, Environmental
Zahirah Mohd Zain, Ahmed Saud Abdulhameed, Ali H. Jawad, Zeid A. ALOthman, Zaher Mundher Yaseen
Summary: This study developed a pH-sensitive chitosan/sepiolite clay/algae biocomposite for efficient removal of cationic and anionic dyes by adjusting the solution pH. The optimal conditions for dye removal were determined using a Box-Behnken design and the adsorption mechanism was investigated. The biocomposite exhibited high adsorption capacity and the adsorption process was confirmed to be endothermic and spontaneous. Various interactions, such as electrostatic, H-bonding, and n-pi interactions, contributed to the adsorption mechanism.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Biology
Yvonne Vadeboncoeur, Marianne Moore, Simon D. Stewart, Sudeep Chandra, Karen S. Atkins, Jill S. Baron, Keith Bouma-Gregson, Soren Brothers, Steven N. Francoeur, Laurel Genzoli, Scott N. Higgins, Sabine Hilt, Leon R. Katona, David Kelly, Isabella A. Oleksy, Ted Ozersky, Mary E. Power, Derek Roberts, Adrianne P. Smits, Oleg Timoshkin, Flavia Tromboni, M. Jake Vander Zanden, Ekaterina A. Volkova, Sean Waters, Susanna A. Wood, Masumi Yamamuro
Summary: Nearshore habitats of deep lakes with high water quality are facing increased occurrences of filamentous algal blooms, posing potential threats to lake water quality and ecosystem. Coordinated efforts among the public, managers, and scientists are needed to study this phenomenon and take effective measures to protect lake ecosystems.
Article
Chemistry, Applied
Yingying Qian, Peiqi Liu, Haifeng Zhuang, Lin Chen, Liangyuan Jia, Jiuzhong Yang, Yang Pan, Yingquan Chen
Summary: This study investigated the catalytic fast pyrolysis of blue-green algae and its nitrogenous model compounds using advanced experimental setup and online mass spectrometry. Through statistical analysis of mass spectra, six different product groups were identified under different biomass-to-catalyst ratios (BCR), and the reaction pathways of catalytic conversion were proposed.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Libor Jasa, Jan Sadilek, Jiri Kohoutek, Lucie Strakova, Blahoslav Marsalek, Pavel Babica
Article
Engineering, Environmental
Blahoslav Marsalek, Stepan Zezulka, Eliska Marsalkova, Frantisek Pochyly, Pavel Rudolf
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Tomas Malina, Eliska Marsalkova, Katerina Hola, Jiri Tucek, Magdalena Scheibe, Radek Zboril, Blahoslav Marsalek
Review
Environmental Sciences
Pavla Kovalakova, Leslie Cizmas, Thomas J. McDonald, Blahoslav Marsalek, Mingbao Feng, Virender K. Sharma
Article
Environmental Sciences
Stepan Zezulka, Eliska Marsalkova, Frantisek Pochyly, Pavel Rudolf, Martin Hudec, Blahoslav Marsalek
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Environmental Sciences
Blahoslav Marsalek, Eliska Marsalkova, Klara Odehnalova, Frantisek Pochyly, Pavel Rudolf, Pavel Stahel, Jozef Rahel, Jan Cech, Simona Fialova, Stepan Zezulka
Article
Engineering, Environmental
Tomas Malina, Eliska Marsalkova, Katerina Hola, Radek Zboril, Blahoslav Marsalek
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Biophysics
Marketa Hulkova, Jana Soukupova, Ross P. Carlson, Blahoslav Marsalek
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Article
Environmental Sciences
Pavla Kovalakova, Leslie Cizmas, Mingbao Feng, Thomas J. McDonald, Blahoslav Marsalek, Virender K. Sharma
Summary: This study evaluated the toxicity of antibiotics treated with ferrate (VI) in water, indicating that some antibiotics remained toxic even after treatment.
Article
Environmental Sciences
Tomas Malina, Adela Lamaczova, Eliska Marsalkova, Radek Zboril, Blahoslav Marsalek
Summary: The production and application of graphene oxide (GO) in aquatic environments have been expanding rapidly, but its potential toxic mechanism needs to be addressed. By studying the interaction between GO and aquatic plants, it was found that the specific mechanism of toxicity depends on the surface oxidation of GO. However, even at high concentrations, GO does not pose a hazard to aquatic plants.
Article
Environmental Sciences
Adela Lamaczova, Tomas Malina, Eliska Marsalkova, Klara Odehnalova, Radka Opatrilova, Petra Pribilova, Stepan Zezulka, Blahoslav Marsalek
Summary: Diazepam and its metabolites have been detected in surface waters worldwide, but a study found that diazepam has no negative impact on Lemna minor, and even stimulates its growth. The presence of GABA-like receptors in plants suggests an evolutionary connection and opens up new research possibilities on the effects of micropollutants on aquatic organisms.
Article
Environmental Sciences
Petra Pribilova, Klara Odehnalova, Pavel Rudolf, Frantisek Pochyly, Stepan Zezulka, Eliska Marsalkova, Radka Opatrilova, Blahoslav Marsalek
Summary: The production and use of chemicals have increased significantly, resulting in a growing interest in new technologies for water purification and wastewater treatment. Advanced oxidation processes (AOPs) using sulphur-based radicals have shown potential in reducing organic contaminants in wastewater. However, these processes require activation. We have investigated an economically and environmentally friendly solution based on hydrodynamic cavitation, which does not require heating or additional activation, and can effectively remove emerging contaminants such as steroid estrogens in just a few seconds.
Article
Chemistry, Multidisciplinary
Klara Odehnalova, Petra Pribilova, Stepan Zezulka, Blahoslav Marsalek
Summary: Plastic/rubber materials used in water treatment technologies as fasteners in equipment for analyzing or removing organic pollutants in water are crucial. The interaction of estrogens with six commonly used plastic and rubber materials was investigated, and it was found that polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), and ethylene propylene diene monomer (EPDM) materials adsorbed negligible amounts of estrogens, while significant amounts were adsorbed onto Tygon S3(TM) material. Styrene butadiene rubber (SBR) was found to be unsuitable and sorbed a considerable quantity of estrone. EPDM, PTFE, and PVDF are suitable materials for sample handling or producing devices for AOP treatment due to their chemical inertness and mechanical flexibility.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Sciences
Jan Cech, Pavel Stahel, Jozef Rahel, Lubomir Prokes, Pavel Rudolf, Eliska Marsalkova, Blahoslav Marsalek
Article
Materials Science, Multidisciplinary
Monika Smekalova, Ales Panacek, Daniel Jancula, Blahoslav Marsalek, Jan Kolarik, Robert Prucek, Libor Kvitek, Radek Zboril
APPLIED MATERIALS TODAY
(2018)