Article
Engineering, Environmental
Kevin George Kelly Vargas, Zhiming Qi, Victor Quezada-Novoa
Summary: In order to mitigate harmful algae blooms, chemicals are used to immobilize phosphate in water. Recent studies have shown that metal-organic frameworks (MOFs) serve as efficient solid adsorbents for various water pollutants, including phosphate. This study compared the performance of low-cost MOFs with commercial adsorbents in the context of algae blooms, revealing that the MOFs exhibited superior adsorption kinetics and capacity over a wide concentration range. Additionally, the cost-effectiveness and minimal linker losses of the MOFs in dilute phosphate solutions position them as viable competitors to commercial adsorbents.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Shengsheng Sun, Tenghaobo Deng, Ming Ao, Yijun Mo, Jingjing Li, Ting Liu, Wenjun Yang, Chao Jin, Rongliang Qiu, Yetao Tang
Summary: This study investigates the release of Cr(III) from Fe(oxyhydr)oxides in the presence of organic acids and its main factors. Results show that organic acids enhance the dissolution of Fe(III) and Cr(III), and the extent of dissolution is influenced by pH. The formation of Cr(III)-organic acid colloids is affected by pH and the adsorption of citrate. The study highlights the importance of pH on Cr release behavior and provides insights for evaluating Cr transport and fate in soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Nutrition & Dietetics
Giulio Verna, Annamaria Sila, Marina Liso, Mauro Mastronardi, Marcello Chieppa, Hellas Cena, Pietro Campiglia
Summary: Iron deficiency affects people of all ages globally, particularly IBD patients, women, and children. Current therapies can restore normal levels but may have side effects, leading to a growing interest in innovative nutritional supplements and iron-rich superfoods.
Article
Chemistry, Analytical
Yohan Jeong, Joongwon Park, Sanghyun Lee, Si Hun Oh, Won Jik Kim, Young Jun Ji, Gun Youl Park, Dohyeong Seok, Weon Ho Shin, Jong-Min Oh, Taek Lee, Chulhwan Park, Anusorn Seubsai, Hiesang Sohn
Summary: Iron oxide-carbon nanocomposites modified with polyacrylic acid were prepared to serve as lithium-ion battery anode materials, with the molecular weights of the organic ligands regulating the pore structure of the composite. The high-molecular-weight ligand-based composites exhibited better electrochemical performance than the controls, showcasing increased capacity and rate capability after prolonged cycling. The superior performance of the high-molecular-weight ligand-based composites was attributed to the unique composite structure design achieved through the introduction of high-molecular-weight ligands and consecutive thermal treatments.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Martin Keilwerth, Liam Grunwald, Weiqing Mao, Frank W. Heinemann, Joerg Sutter, Eckhard Bill, Karsten Meyer
Summary: A new supporting ligand TIMMNMes was developed to isolate an air-stable iron(V) complex with a terminal nitrido ligand, synthesized by one-electron oxidation from an iron(IV) precursor. Single-crystal X-ray diffraction analyses showed metal-centered oxidation elongating the iron nitride bond, bringing the high-valence iron center closer to a trigonal bipyramid. Fe-57 Mossbauer, EPR, UV/vis electronic absorption spectroscopy, and quantum chemical calculations identified the factors affecting the structure and electronic nature of the complex.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Environmental Sciences
Yu Xiang, Hui Xu, Chun-fu Li, Hailu Demissie, Kun Li, Hua Fan
Summary: The study demonstrated that the addition of algal cells could enhance fluoride removal efficiency by increasing the distribution of Al(OH)(3) in flocs. However, excessive Al3+ could damage algal cells and worsen the defluoridation effect by releasing intracellular organic matter. On the other hand, Al-13 mainly removed fluoride through ion exchange, substitution, and hydrogen bonding, maintaining defluoridation performance effectively at high dosages without damaging the integrity of algal cells.
Article
Environmental Sciences
Emeric Kochoni, Caroline Doose, Patrice Gonzalez, Claude Fortin
Summary: Metal uptake and toxicity are influenced by its aqueous speciation and competitive ions, as well as internal biological feedback mechanisms. This study found that the uptake rate of Cu2+ significantly increased in algal cells acclimated to a low Fe3+ environment, up to 4.7 times higher compared to non-acclimated cells. The overexpression of certain genes suggests the activation of a high affinity Fe3+ assimilation system, which may explain the increase in Cu2+ uptake rate in acclimatized algae.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Yunpeng Wang, Fei Li, Jiayu Du, Xiaoyang Shi, Aixi Tang, Ming-Lai Fu, Wenjie Sun, Baoling Yuan
Summary: The study investigated the contribution of two algae species, M. aeruginosa and C. meneghiniana, to the formation of nitrosamines during chloramination in drinking water treatment. Results showed that increasing reaction time and algae cell concentration enhanced the formation potential of different NAs, with IOM being the main source of NAs precursors for both algae species. EEM analysis confirmed that SMPs and protein-like substances were the main cellular components contributing to NAs formation for both algae.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Applied
Shun-Lai Li, Run Zhou, Wei-Jing Zhao, Hong-Guang Du
Summary: By designing and synthesizing four new ligand catalysts, it is possible to effectively degrade dye wastewater, especially for companies engaged in industrial dye production that need to prioritize environmental protection. Acyclic catalysts A and B show good performance in treating dye wastewater, efficiently removing COD and achieving decolorization.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Xavier Mayali, Ty J. Samo, Jeff A. Kimbrel, Megan M. Morris, Kristina Rolison, Courtney Swink, Christina Ramon, Young-Mo Kim, Nathalie Munoz-Munoz, Carrie Nicora, Sam Purvine, Mary Lipton, Rhona K. Stuart, Peter K. Weber
Summary: This study quantified carbon and nitrogen incorporation in bacterial co-cultures growing with diatom at the single-cell level. Unexpected strain and cell variability were observed, and three distinct functional guilds were identified.
NATURE COMMUNICATIONS
(2023)
Article
Electrochemistry
Nur Jannati Ramjam, Khairul Nizam Mohamed
Summary: The concentration of Fe(III) was determined at different dissolved fractionation using a newly developed adsorptive-cathodic stripping voltammetry method. The results showed an increase in dissolved Fe(III) concentration compared to small colloidal Fe(III), but no significant differences were found between the two phases. The low concentration of Fe(III) was sufficient to support phytoplankton growth in the study area.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Fisheries
Eman A. El-Sharkawy, Ibrahim M. Abd El-Razek, Asem A. Amer, Ali A. Soliman, Mustafa Shukry, Mahmoud S. Gewaily, Guillermo Tellez-Isaias, Zulhisyam Abdul Kari, Mahmoud A. O. Dawood
Summary: This study investigated the effects of sodium butyrate (SB) on Thinlip Grey Mullet. The results showed that fish-fed SB had better growth performance, digestive enzyme activity, and blood biochemistry.
AQUACULTURE REPORTS
(2023)
Article
Chemistry, Analytical
Oceane Hourtane, Genevieve Rioux, Peter G. C. Campbell, Claude Fortin
Summary: This study investigates the uptake of platinum by two microalgae species and its inhibitory effects on growth. Surprisingly, the presence of organic matter enhances platinum toxicity in the algae. This raises concerns about the impact of platinum on microalgae under realistic environmental conditions.
ENVIRONMENTAL CHEMISTRY
(2022)
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)
Review
Environmental Sciences
Lianxue Wei, Haixiao Li, Jinfeng Lu
Summary: This paper comprehensively reviews the latest research on algae-induced antibiotic photodegradation, showing that extracellular organic matters (EOMs) secreted by algae are essential for antibiotic photodegradation. Various factors, including algae species, antibiotic types, and environmental variables, influence algae-induced photodegradation.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Lesley A. Clementson, Anthony J. Richardson, Wayne A. Rochester, Kadija Oubelkheir, Bingqing Liu, Eurico J. D'Sa, Luiz Felipe Mendes Gusmao, Penelope Ajani, Thomas Schroeder, Phillip W. Ford, Michele A. Burford, Emily Saeck, Andrew D. L. Steven
Summary: Subtropical systems experience occasional severe floods that lead to significant changes in phytoplankton community structure. A study in an Australian subtropical bay found that a 1:100 year summer flood resulted in rapid shifts from micro-phytoplankton dominance to nano- and pico-plankton dominance. This shift was attributed to increased nutrient availability stimulating the growth of smaller phytoplankton species.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biology
Raissa L. Gill, Sinead Collins, Phoebe A. Argyle, Michaela E. Larsson, Robert Fleck, Martina A. Doblin
Summary: This study demonstrates that the predictability of temperature fluctuations has a significant impact on the phenotype of marine diatom, as irregular fluctuations result in decreased cellular complexity and growth, while regular fluctuations lead to increased growth. These findings suggest that shifts in environmental stochasticity may have widespread consequences for ocean primary producers.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Michaela E. Larsson, Anna R. Bramucci, Sinead Collins, Gustaaf Hallegraeff, Tim Kahlke, Jean-Baptiste Raina, Justin R. Seymour, Martina A. Doblin
Summary: The authors describe the sophisticated feeding strategy of a mixotrophic dinoflagellate and its impact on the vertical flux of carbon. The mixotrophic dinoflagellate produces carbon-rich 'mucospheres' that attract and capture microbial prey, contributing significantly to the oceanic carbon flux. This study highlights the importance of complex foraging behavior in the vertical transport of carbon in the ocean.
NATURE COMMUNICATIONS
(2022)
Article
Biodiversity Conservation
Fei-Xue Fu, Bernhard Tschitschko, David A. Hutchins, Michaela E. Larsson, Kirralee G. Baker, Allison McInnes, Tim Kahlke, Arjun Verma, Shauna A. Murray, Martina A. Doblin
Summary: Tropical taxa may be vulnerable to temperature variations due to their relatively stable temperatures, and microbial responses to temperature fluctuations vary depending on their thermal history. This study highlights the divergent effects of temperature fluctuations on microbial growth and metabolism.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Matthias Windhagauer, Raffaela M. Abbriano, Dorothea A. Pittrich, Martina A. Doblin
Summary: Diatoms such as Phaeodactylum tricornutum are being considered as sustainable alternatives for traditional microbial cell factories. This study investigated the effect of constitutive and inducible expression of the heterologous poly-3-hydroxybutyrate (PHB) pathway in P. tricornutum. Inducible expression outperformed constitutive expression, and the dynamics of PHB accumulation were further optimized by supplementing CO2. The results highlight the importance of genetic design and substrate availability for improved product accumulation.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Environmental Sciences
Arnold G. Dekker, Lesley A. Clementson, Magnus Wettle, Nagur Cherukuru, Hannelie Botha, Kadija Oubelkheir
Summary: This study examined the bio-optical properties of coral reef waters in coral reef ecosystems untouched by land-derived run-off. The results showed significant differences in optical and biogeochemical properties between on-reef waters and the surrounding ocean waters. These differences have implications for estimating sunlight absorption, temperature distributions, and nutrient and carbon fluxes in coral reef ecosystems.
Article
Environmental Sciences
Lesley A. Clementson, Kadija Oubelkheir, Phillip W. Ford, David Blondeau-Patissier
Summary: Distinct absorption peaks were observed in the UV region of water samples collected in Keppel Bay during the presence of sporadic Trichodesmium colonies. The largest absorption coefficients were observed in near-surface samples, indicating the impact of Trichodesmium blooms. The accuracy of satellite retrieved estimates of ocean colour products related to CDOM and particulate absorption coefficients can be significantly affected.
Article
Oceanography
Monika Soja-Wozniak, Lesley Clementson, Bozena Wojtasiewicz, Mark Baird
Summary: This paper reconstructs the absorption spectra of phytoplankton using pigment concentration and absorption coefficients. Small phytoplankton samples show no significant difference between calculated and measured absorption. The reconstructed phytoplankton absorption is overestimated at one wavelength and underestimated over a specific range.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Multidisciplinary Sciences
Nathan Drayson, Janet Anstee, Hannelie Botha, Gemma Kerrisk, Phillip Ford, Bozena Wojtasiewicz, Lesley Clementson, James McLaughlin, Marlee Hutton
Summary: The authors present bio-optical data collected from 34 inland waterbodies in Australia spanning 316 sets of observations. The data, collected from 2013 to 2021, includes measurements of remote sensing reflectance, diffuse attenuation extinction coefficient, optical backscattering, absorption of colored dissolved organic matter, phytoplankton, and non-algal particles, as well as analysis of algal pigments and carbon concentrations. The dataset covers a diverse range of optical water types and is suitable for algorithm development, satellite calibration and validation, and machine learning applications.
Article
Microbiology
Michael P. Doane, Martin Ostrowski, Mark Brown, Anna Bramucci, Levente Bodrossy, Jodie van de Kamp, Andrew Bissett, Peter Steinberg, Martina A. Doblin, Justin Seymour
Summary: This study investigates the drivers of bacterioplankton assembly and finds that both environmental factors and biotic interactions are important in shaping bacterioplankton diversity. The importance of these factors varies depending on the environmental heterogeneity of the location, with environmental factors playing a larger role in more variable environments and biotic interactions being more important in stable environments.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Environmental Sciences
Kadija Oubelkheir, Phillip W. W. Ford, Nagur Cherukuru, Lesley A. A. Clementson, Caroline Petus, Michelle Devlin, Thomas Schroeder, Andrew D. L. Steven
Summary: In January 2013, tropical cyclone Oswald caused significant flooding in the North-East coast of Australia, resulting in substantial changes in physical, biogeochemical and optical properties of Princess Charlotte Bay. The freshwater outflows from the Normanby and Kennedy rivers played a major role in these changes.
Article
Oceanography
Giselle F. Firme, David J. Hughes, Leonardo Laiolo, Moninya Roughan, Iain M. Suthers, Martina A. Doblin
Summary: Mesoscale eddies play a significant role in driving variability in phytoplankton functional trait composition and primary productivity relative to adjacent waters. In the offshore waters of southeast Australia, these eddies provide an important enrichment mechanism in nitrogen-limited areas, but there is limited knowledge about primary productivity within cold and warm-core eddies and the factors that affect phytoplankton communities in this variable environment. This study quantified net primary productivity and compared phytoplankton species composition in five different environments, highlighting the importance of cold-core eddies in regulating primary productivity in eastern Australian waters and the need to incorporate phytoplankton size structure in eddy-resolving models for accurate forecasts.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2023)
Article
Geosciences, Multidisciplinary
Laura A. Dalman, Christina Schallenberg, Alexander D. Fraser, Sophie Bestley, Eun Jin Yang, Lesley Clementson, Klaus M. Meiners
Summary: Microalgae in Antarctic sea ice are crucial for early-season production in Southern Ocean ecosystems. This study investigates the absorption coefficients, pigments, and community composition of ice algae and non-algal particles in pack ice off East Antarctica and the Weddell Sea. The results show that ice algae dominate particulate absorption in both regions. Light conditions influence pigment production and community composition.
JOURNAL OF MARINE SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Marion Fourquez, David J. Janssen, Tim M. Conway, Damien Cabanes, Michael J. Ellwood, Matthias Sieber, Scarlett Trimborn, Christel Hassler
Summary: The availability of dissolved iron (dFe) in the Southern Ocean (SO) affects the uptake of atmospheric CO2 by the SO biological pump and has a direct impact on climate. Fe uptake experiments with Phaeocystis antarctica reveal that the range of dFe bioavailability in natural samples is wider than previously thought, with higher bioavailability near glacial sources. The degree of bioavailability is not solely dependent on in situ dFe concentration and depth, challenging the assumption used in modeling studies.
Article
Ecology
Phoebe A. Argyle, Nathan G. Walworth, Jana Hinners, Sinead Collins, Naomi M. Levine, Martina A. Doblin
Summary: Trait-based approaches have become popular in phytoplankton ecology, with this study demonstrating that phenotypic diversity within the marine diatom genus Thalassiosira cannot be predicted from genotypic diversity. Plasticity can lead to highly divergent phenotypes, represented by multivariate phenotypes in a reduced dimensional space termed as a 'trait-scape'. Understanding trait-scapes can reveal common constraints on multi-trait plasticity in phytoplankton and will be critical in predicting microbial responses to environmental change.
ISME COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Morgane Leon, Pieter van Beek, Virginie Sanial, Marc Souhaut, Paul Henderson, Matthew A. Charette
Summary: The analysis of radium and actinium isotopes in seawater requires the collection of large volumes of water and the use of high sensitivity instruments. To concentrate these isotopes, filters impregnated with MnO2 are typically used. However, the extraction efficiency of these filters for the target isotopes needs to be determined.