Review
Environmental Sciences
Harshavardhan Mohan, Sethumathavan Vadivel, Saravanan Rajendran
Summary: Harmful algal blooms (HABs) are a global problem caused by human activities such as eutrophication and climate change. Photocatalysis has been identified as the most promising solution for removing HABs, with advantages over other methods.
Article
Fisheries
Marta P. Sanderson, Karen L. Hudson, Lauren S. Gregg, Amanda B. Chesler-Poole, Jessica M. Small, Kimberly S. Reece, Ryan B. Carnegie, Juliette L. Smith
Summary: This study investigated the water treatment and algal toxin detection in hatcheries on the East Coast of the US. The results showed the presence of various algal toxins in hatchery water, despite the absence of visible harmful algal bloom cells. It was also found that sand filtration and activated charcoal filtration successfully reduced the toxin concentrations in the source water.
Review
Chemistry, Multidisciplinary
Barathan Balaji-Prasath, Ying Wang, Yu Ping Su, David P. Hamilton, Hong Lin, Luwei Zheng, Yong Zhang
Summary: This article reviews physical, chemical, and biological control methods applicable to red tide species in marine and estuarine water bodies, and discusses the mechanisms of algal bloom outbreaks and their applications.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Review
Food Science & Technology
Wolfgang Karl Hofbauer
Summary: This article provides a comprehensive overview of potentially harmful algae in the built environment, including toxic, allergenic, and pathogenic species. These algae can negatively affect human health and the integrity of building materials. In addition to cyanobacteria, other green algae and forms may also possess harmful properties.
Article
Biotechnology & Applied Microbiology
Barathan Balaji-Prasath, Ying Wang, Yuping Su, Minghua Chen, Yi Zheng
Summary: The fermentation processes of algicidal bacteria offer a promising and eco-friendly approach for controlling harmful algae blooms (HABs). This study analyzed the microbial fermentation of algicidal bacterium Ba3 and its potential ability to produce algicidal compounds. The results show that the fermentation products have the potential to control dinoflagellate blooms, providing an encouraging basis for large-scale fermentation production and the control of red tide outbreaks.
FERMENTATION-BASEL
(2022)
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)
Article
Biotechnology & Applied Microbiology
Alina A. Corcoran, Ryan W. Hunt
Summary: Harmful Algal Blooms (HABs) pose threats to ecosystems and human health globally. By integrating HAB biomass into a bio-foundry business model, there is an opportunity to combine HAB prevention and control strategies with sustainable manufacturing. Successful partnership between environmental managers and manufacturers will require overcoming technical and logistical challenges, as well as changes in regulatory frameworks and cultural shifts to explore innovative solutions, materials, and products.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Environmental Sciences
Abdullah H. Alshahri, Luca Fortunato, Noreddine Ghaffour, TorOve Leiknes
Summary: Liquid ferrate and clays can effectively remove algal organic matter in seawater desalination plants, contributing to the improvement of system performance.
Article
Chemistry, Analytical
Kate Jang, Ochan Otim
Summary: Harmful algae blooms are unwelcome annual events in California's waterbodies, causing harm to marine life and posing risks to human health. The lack of statewide monitoring standards hinders a comprehensive understanding of the distribution and trends of harmful algae blooms. This study utilizes empirical data to examine the spatiotemporal distribution of harmful algae blooms, revealing an increase in their frequency statewide and identifying regions that are most affected.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Article
Microbiology
Erik F. J. Weenink, Hans C. P. Matthijs, J. Merijn Schuurmans, Tim Piel, Maria J. van Herk, Corrien A. M. Sigon, Petra M. Visser, Jef Huisman
Summary: Oceanographic studies have shown that heterotrophic bacteria can protect marine cyanobacteria against oxidative stress caused by hydrogen peroxide. In freshwater ecosystems, less-sensitive green algae can protect cyanobacteria by degrading H2O2 faster and providing antioxidant enzymes. The level of protection depends on the density of green algae.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Marine & Freshwater Biology
Edson Silva, Franois Counillon, Julien Brajard, Lasse H. Pettersson, Lars Naustvoll
Summary: This study assesses the environmental conditions and develops a sub-seasonal forecast model to predict the abundance of D. acuminata cells in the Lyngen fjord. The model uses past cell concentration, sea surface temperature, Photosynthetic Active Radiation, and wind speed to predict future cell abundance.
Article
Chemistry, Multidisciplinary
Prabhdeep Kaur Brar, Banu Ormeci, Amit Dhir
Summary: Microalgae have been recognized as a promising source of biomass for wastewater bioremediation and biodiesel production. They can be cultivated in various types of water, including wastewater which provides essential nutrients for growth. This study compares sustainable microalgae cultivation systems and harvesting methods, and explores the potential of in-situ transesterification for biodiesel production. The challenges faced in integrated processes are thoroughly discussed, and lab-scale studies support the proposed methodology, highlighting the future prospects of this research.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Materials Science, Multidisciplinary
Is Fatimah, Ika Yanti, Hiroko Kawaii Wijayanti, Elfira Ulya Nisa, Suresh Sagadevan, Muchammad Tamyiz, Ruey-an Doong
Summary: By supporting NiFe2O4 onto montmorillonite, a highly active and reusable catalyst for methyl violet oxidation was obtained. Through XRD, TEM, XPS, and VSM analyses, it was found that the concentration of precursor played a crucial role in determining the specific surface area, NiFe2O4 particle size, and magnetism. The study also revealed that adsorption had an impact on both the enhancement of catalytic activity and the stability of the catalysts.
Article
Engineering, Environmental
Bingcong Zhang, Bifei Mao
Summary: In this study, a novel magnetic starch-grafted-cationic polyacrylamide composite (MAG@ST-g-CPAM) was developed as a flocculant for algae harvesting. The efficiency of the composite was compared to other flocculants, and the optimal feeding ratios and impacting factors were determined. The MAG@ST-g-CPAM flocculant showed superior harvesting efficiencies and facilitated water reuse through the elimination of fulvic acids.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Environmental Sciences
Xiaoyan Sun, Xiaopeng Li, Shi Tang, Kairong Lin, Tongtiegang Zhao, Xiaohong Chen
Summary: This paper discusses the demand for environmentally friendly and cost-effective technologies for aquaculture tail water (ATW) treatment and the potential of algal-bacterial symbiosis system (ABSS) in this process. It analyzes the characteristics of ABSS based technology for ATW treatment, such as energy consumption, greenhouse gas emission, environmental adaptability, and the possibility of carbon, nitrogen and phosphorus removal or recovery as resources. It introduces key environmental factors, species of algae and bacteria, and their proportions commonly used in the establishment of ABSS. Finally, it reviews and discusses reactor technologies and relevant research gaps in the establishment of ABSS.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Arvin Sohrabi, Mousa Meratizaman, Shuli Liu
Summary: This paper simulates and discusses possible solutions to improve the economic and technical performances of a battery-less renewable energy-powered BWRO system under real climate conditions. The study finds that the photovoltaic-based system performs better in terms of specific energy consumption and unused energy ratio.
Article
Engineering, Chemical
Chunlan Pan, Xiaoyin Hu, Vishal Goyal, Theyab R. Alsenani, Salem Alkhalaf, Tamim Alkhalifah, Fahad Alturise, Hamad Almujibah, H. Elhosiny Ali
Summary: This paper introduces a novel waste heat recovery method using the hot flue gas from a ship's engine to produce liquefied hydrogen while meeting the ship's air-conditioning requirement. A comprehensive feasibility assessment is conducted and an artificial neural network with a multiobjective grey wolf optimization method is used for optimization. The findings indicate the highest mean sensitivity index of the flash temperature and the best optimization scenario for exergy efficiency, CO2 emission reduction, and liquefied hydrogen cost.
Article
Engineering, Chemical
Daniele Chinello, Jan Post, Louis C. P. M. de Smet
Summary: In this study, PVDF-based anion-exchange membranes were designed to selectively separate nitrate from chloride. Experimental data showed that increasing the concentration of PVDF enhanced nitrate transport but also increased the membrane electrical resistance. The selectivity of nitrate was found to be independent of the membrane thickness and mainly driven by the increased affinity between the anion and the membrane.
Article
Engineering, Chemical
Umar Noor, Muhammad Fayyaz Farid, Ammara Sharif, Amna Saleem, Zubair Nabi, Muhammad Furqan Mughal, Kiran Abbas, Toheed Ahmed
Summary: Global water scarcity is increasing, and water desalination is an important solution. Multifunctional advanced materials, such as membrane materials and solar-driven desalination, play a crucial role in water desalination. Additionally, these materials can be used for water purification, wastewater treatment, and pollutant elimination.
Article
Engineering, Chemical
Emrah Gumus
Summary: With growing global concerns about climate change and environmental impacts, the use of nuclear energy in naval vessels offers a cleaner and more efficient solution to reduce emissions and address water and energy supply challenges. This study explores a novel system that combines a nuclear-driven supercritical carbon dioxide power cycle with reverse osmosis cogeneration to meet the water and electricity demands in maritime operations, enhancing the sustainability, efficiency, and self-sufficiency of naval vessels. The results indicate that the system has the potential to be a viable and effective solution for naval operations.
Article
Engineering, Chemical
Dao Thi Thanh Huyen, Saikat Sinha Ray, Young -Nam Kwon
Summary: This study focuses on the modification of a commercially available polyamide thin-film composite membrane with a zwitterionic material to enhance its fouling resistance. The modified membrane shows improved salt rejection and reduced permeability compared to the pristine membrane. Fouling tests demonstrate that the modified membrane has a lower fouling ratio and higher recovery ratio. The enhanced antifouling characteristics are attributed to the improved hydrophilicity resulting from the zwitterionic brushes and the salting-in effect.
Article
Engineering, Chemical
Niklas Koeller, Lukas Mankertz, Selina Finger, Christian J. Linnartz, Matthias Wessling
Summary: This study presents a methodology to scale up Flow-electrode Capacitive Deionization (FCDI) technology from lab-scale to pilot-scale systems. By increasing membrane area and using a stacking approach, the FCDI modules were successfully scaled up and achieved a salt transfer rate comparable to lab-scale systems. This provides a foundation for future assessments of energy demand and economics.
Article
Engineering, Chemical
Mona Gulied, Sifani Zavahir, Tasneem Elmakki, Hyunwoong Park, Guillermo Hijos Gago, Ho Kyong Shon, Dong Suk Han
Summary: This study introduces a novel hybrid system that combines direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX) to facilitate seawater reverse osmosis (SWRO) brine enrichment and selective lithium recovery.
Article
Engineering, Chemical
Zhiqiang Zhang, Ruifeng Deng, Jiao Zhang, Lu She, Guangfeng Wei, Renyong Jia, Pengyu Xiang, Siqing Xia
Summary: A transmembrane electro-chemisorption system with authigenic acid and base was developed for enhancing ammonia recovery from strong ammonia wastewater. The system efficiently transformed ammonium into free ammonia, which was then adsorbed and recovered through transmembrane chemisorption. This system yielded pure (NH4)2SO4 product and produced valuable byproducts of pure hydrogen and oxygen. Higher applied voltage resulted in better ammonia recovery.
Article
Engineering, Chemical
Alena Popova, Sandrine Boivin, Takuji Shintani, Takahiro Fujioka
Summary: This study aimed to produce a high-integrity RO membrane by forming a polyamide skin layer on a TE support layer, in order to enhance the integrity of the membrane and improve the microbiological safety of potable water reuse.
Article
Engineering, Chemical
Sanjana Yagnambhatt, Saber Khanmohammadi, Jonathan Maisonneuve
Summary: This study investigates the concept of using heat to enhance reverse osmosis (RO) desalination. The effect of temperature on water permeate flux, specific energy, permeate quality, and applied operating pressures is evaluated using an analytical model. The results suggest that under specific conditions, the tradeoff between savings in mechanical pump work and thermal energy input in thermally-enhanced RO can be favorable, leading to overall energy savings.
Article
Engineering, Chemical
Jiangju Si, Chenrui Xue, Shun Li, Linchao Yang, Weiwei Li, Jie Yang, Jihong Lan, Ningbo Sun
Summary: To meet the huge demand for lithium resources, there is an urgent need to develop a new efficient technology for lithium recovery from salt-lake brines. In this study, a selective membrane capacitive deionization system is reported, which achieves high lithium recovery capacity and rate through the use of materials with efficient intercalated pseudo-capacitance and a high specific area porous carbon. The use of a modified thin-coated membrane allows for selective Li+ recovery, and adjusting the concentrations of Li+ and Mg2+ in the feed solution enables higher Li+/Mg2+ selectivity.
Article
Engineering, Chemical
Mohamed R. Salem, R. Y. Sakr, Ghazy M. R. Assassa, Omar A. Aly
Summary: This research proposes a new method of using wasted thermal energies as an additional heating source for solar still distillation units (SSDUs) to increase productivity and reduce pollution and global warming. By testing two SSDUs, the study shows that heating airflow can raise temperatures, enhance freshwater production, and improve system thermal efficiency.
Article
Engineering, Chemical
Qimeng Sun, Miao Sun, Linyan Yang, Yuan Gao, Xinghai Zhou, Lihua Lyu, Chunyan Wei
Summary: This study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation and achieves high evaporation efficiency with excellent thermal management ability. The evaporator has demonstrated advanced light-harvesting capability and can produce freshwater that meets drinking water standards, showing great potential for applications in desalination and sewage treatment.
Article
Engineering, Chemical
Yidong Zhang, Wangfang Deng, Meiyan Wu, Chao Liu, Guang Yu, Qiu Cui, Pedram Fatehi, Chunlin Xu, Bin Li
Summary: In this study, a novel polydopamine-functionalized lignin-containing pulp foam evaporator with high-efficiency desalination and multi-contaminant adsorption capabilities was designed. The foam evaporator showed excellent light absorption, water absorption, thermal conductivity, and chelation abilities, allowing for solar evaporation and contaminant adsorption synergistically. It also exhibited potential applications in metal ion concentration and contaminated seawater treatments, and demonstrated superior biodegradability compared to poly-styrene foam. This foam material holds promise for developing multifunctional photo-thermal systems for solar-driven water purification.