Article
Environmental Sciences
Julia Clols-Fuentes, Julien A. Nguinkal, Patrick Unger, Bernd Kreikemeyer, Harry W. Palm
Summary: Fish farming in Recirculating Aquaculture Systems (RAS) is a sustainable and efficient practice. This study analyzed the influence of different stocking densities on the water microbiome composition and identified bacterial pathogens associated with common fish farming practices. The results showed that microbiomes differ across systems and sampling points, and fish biomass and water physicochemical properties affect the microbiome.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Engineering, Environmental
Daniel Ma, Mark H. Weir, Natalie M. Hull
Summary: Ultraviolet disinfection is a promising solution for decentralized drinking water systems, but photorepair of pathogens after UV disinfection poses a health risk. This study constructed a quantitative microbial risk assessment (QMRA) for photorepair after UV disinfection of drinking water in a decentralized system. The risk of infection was found to be below 1-in-10,000 under certain conditions. The model can be expanded to other pathogens and used to inform the placement of community water access points to reduce photorepair risk and ensure safe storage of UV disinfected water.
Article
Limnology
Ma Yuexin, Du Xin, Liu Yubin, Zhang Tao, Wang Yue, Zhang Saisai
Summary: This study characterized and compared the bacterial communities in the biofilters of two full-scale RASs for the culture of puffer fish. The study revealed differences in bacterial communities at different sampling dates and similarities of both biofilters. Maintaining a good water quality and health of farmed fish in RASs depended on the correct management of the bacterial communities.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2021)
Article
Fisheries
Vasco C. Mota, Maia L. Eggen, Carlo C. Lazado
Summary: This study evaluated the effects of acute PAA exposure on Atlantic salmon parr, finding that the no-observed-effect concentration for PAA should be below 1.6 mg/L. The toxicity of PAA-based disinfectants is influenced by their acidified nature, which may interfere with the water pH in low alkalinity aquaculture systems. Further research is needed to assess the long-term health and welfare consequences of PAA exposure in Atlantic salmon parr.
Article
Engineering, Environmental
Eliza M. Costigan, Morgan A. Oehler, Jean D. MacRae
Summary: Recirculating aquaculture systems (RAS) are popular for their potential to provide high-quality protein and this study investigates the applicability of a phosphorus adsorbent in RAS wastewater treatment. The results show that the adsorbent has high removal efficiencies and good selectivity for phosphate under different water conditions.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Green & Sustainable Science & Technology
Nesar Ahmed, Giovanni M. Turchini
Summary: Recirculating Aquaculture Systems (RAS) are a potential adaptation strategy for sustainable fish production in response to climate change, offering eco-friendly, water-efficient, highly productive features with minimal environmental impact. While energy consumption and greenhouse gas emissions are constraints, RAS operate indoors and are not significantly affected by climatic factors, making them a promising direction for future fisheries development.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Krzysztof Okarma, Piotr Lech, Darius Andriukaitis, Dangirutis Navikas, Agata Korzelecka-Orkisz, Adam Tanski, Krzysztof Formicki
Summary: This paper investigates the use of optical flow algorithms for estimating water flow in fish breeding tanks. A method based on the features of optical flow algorithms is proposed and verified experimentally, showing high correlation with measurement results obtained using professional water-flow meters.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Environmental
S. Santorio, A. Val del Rio, C. L. Amorim, L. Arregui, P. M. L. Castro, A. Mosquera-Corral
Summary: The study evaluated the performance of a Continuous Flow Granular Reactor (CFGR) for treating freshwater RAS stream during two consecutive dry seasons. The configuration with a mechanical stirrer and sieve showed the best results in terms of biomass retention and nitrogen removal, achieving granulation in 55 days with high removal percentages of ammonium and nitrite.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Fisheries
Stefanos Moschos, Konstantinos Ar. Kormas, Hera Karayanni
Summary: This review examines the microbiome of recirculating aquaculture systems, focusing on dominant genera and families and their metabolic functions. It also highlights the lack of information on archaeal and microeukaryotic communities and prokaryotic-protist interactions in these systems.
REVIEWS IN AQUACULTURE
(2022)
Article
Agricultural Engineering
Jani T. Pulkkinen, Anna-Kaisa Ronkanen, Antti Pasanen, Sepideh Kiani, Tapio Kiuru, Juha Koskela, Petra Lindholm-Lehto, Antti-Jussi Lindroos, Muhammad Muniruzzaman, Lauri Solismaa, Bjorn Klove, Jouni Vielma
Summary: The discharge management of Recirculating Aquaculture Systems is crucial for the development of the aquaculture sector, as RAS do not naturally result in low nutrient emissions. Danish commercial trout farms have successfully adopted wetlands and woodchip bioreactors for effluent treatment. The novel "zero-discharge" RAS system in Denmark has shown promising results in reducing nutrient effluent levels and reusing water effectively.
AQUACULTURAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Yishuai Du, Jianping Xu, Li Zhou, Fudi Chen, Tianlong Qiu, Jianming Sun
Summary: This study successfully constructed a recirculating aquaculture system for rearing Litopenaeus vannamei, achieving significant improvement in growth performance through key technologies and adjustments in sewage treatment systems.
APPLIED SCIENCES-BASEL
(2021)
Article
Fisheries
Gedi Liu, Yifeng Jiang, Keyang Zhong, Yan Yang, Yang Wang
Summary: Environmental time series modeling is crucial for the design of intelligent and predictable agricultural facilities. The accuracy of modeling environmental factors is important for grasping the situation and trend of recirculating aquaculture systems, providing early warnings for abnormal environmental conditions, and improving the accuracy of environmental control. The proposed GraphTS, a multi-graph fusion network based on GRU and graph attention neural network, shows improvement in prediction performance compared to the traditional LSTM model, with reduced average margin of error and improved Pearson correlation coefficient.
Article
Food Science & Technology
Jae-Ik Lee, Sang-Soon Kim, Dong-Hyun Kang
Summary: The study aimed to investigate the effect of amalgam UV lamp-activated gallic acid on the inactivation of foodborne pathogens. When compared with conventional low-pressure Hg UV lamp, the amalgam lamp-activated gallic acid showed significantly higher reduction levels of all three foodborne pathogens. It was found that amalgam lamp-activated gallic acid generated a wider range of reactive oxygen species (ROS), which effectively controlled foodborne pathogens in the food processing industry.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Alba Romano, Inmaculada Ortiz, Ane M. Urtiaga
Summary: This study presents a comprehensive kinetic analysis and modelling of electrochemically assisted ammonia removal from marine aquaculture waters. The proposed model combines kinetics of chlorine electrogeneration with experimentally determined mechanism and kinetic parameters of break point chlorination reactions. The model has been validated through laboratory experiments, confirming its validity and robustness in analyzing, predicting, and explaining ammonia removal performance in electrochemical treatment of marine RAS water.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Environmental
Xiaochen Liu, Xue Shang, Qinqing Cai, Jiangyong Hu
Summary: UV-LED has emerged as an alternative UV source due to its advantages. The study found that placing UV-LEDs at the outlet position of the disinfection reactor resulted in higher disinfection efficiency due to longer effective UV exposure time and higher UV fluence generated.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
