aquaculture recirculation Articles

  • Next Generation Recirculating Aquaculture System (RAS) Technology

    The increasing number of aquaculture facilities based on RAS, or Recirculating Aquaculture Systems technology, is testament to the fact that this technology is proving highly advantageous. AquaMaof, a leader in recirculating aquaculture systems, brings a unique, multidisciplinary approach to indoor fish production, and is leading the way in developing innovative recirculating aquaculture system ...

  • Phosphatase activity and specific methanogenic activity in an anaerobic reactor treating sludge from a brackish recirculation aquaculture system

    Anaerobic treatment of high salinity sludge from marine/brackish recirculation aquaculture systems is potentially limited by inhibition of enzymatic activities and cell lysis resulting from high osmotic pressures. To further address these limitations the following investigations were conducted: effect of salinity on phosphatase activity (PA), soluble microbial products (SMP) production, and ...


    By IWA Publishing

  • Anaerobic biodegradability of fish remains: experimental investigation and parameter estimation

    The generation of organic waste associated with aquaculture fish processing has increased significantly in recent decades. The objective of this study is to evaluate the anaerobic biodegradability of several fish processing fractions, as well as water treatment sludge, for tilapia and sturgeon species cultured in recirculated aquaculture systems. After substrate characterization, the ultimate ...


    By IWA Publishing

  • CO2 Removal and Stripping Column Ventilation Rate at Bell Aquaculture

    Monitoring and controlling CO2 level in Recirculating Aquaculture Systems (RAS) is crucial not only for fish health but it is used increasingly for efficient management. Under supervision of Steve Summerfelt, a joint project has studied costs savings with optimizing ventilation based on CO2 continuous monitoring. The CO2 probe used in that project came from ...


    By Franatech GmbH

  • The 9 Advantages of Modular Recirculating Aquaculture (RAS) Systems

    When recirculating aquaculture systems were first developed and deployed at commercial fish farms in the 1990s, each one was custom-built and designed specifically for a certain site, species and production level, among other factors. Engineers would come in and plan the system from scratch. Based on the scale of the operation, it could take up to 2-3 years for a new system to get designed and ...


    By Innovasea

  • Land-based Aquaculture: Meeting the Challenge of the UN Sustainable Development Goals (SDGs)

    In 2015, all United Nations Member States agreed to 17 Global Goals, officially known as the Sustainable Development Goals, or SDGs. These goals serve as a call to action aimed at ending poverty, fighting inequality and addressing the urgency of climate change, by 2030. They are part of a broader global movement encouraging all industries — including aquaculture — to adopt more ...

  • Land-Based Aquaculture: Seven Tips for Investing Successfully

    According to the United Nations Food and Agriculture Organization, aquaculture has become the world’s fastest growing food-producing industry, currently producing over 50 percent of consumed seafood worldwide. Out of all existing aquaculture methods, Recirculating Aquaculture Systems (RAS), a land-based aquaculture technology, offers significant advantages. What is a Land-Based Aquaculture ...

  • How to Jumpstart a RAS Project?

    Inland Recirculating Aquaculture System (RAS) projects, like all large-scale projects, should be launched, developed, and executed according to an organized plan and along clearly understood stages. This helps to minimize hurdles and build a solid foundation for your RAS project. Having been involved in the inception and materialization of multiple RAS projects, I am happy to share, from my ...

  • Planning a RAS project? Be Aware of These Unique Managerial Challenges

    Interest in Recirculating Aquaculture System (RAS) land-based fish production technology is increasing as its benefits are becoming more widely recognized. As a wave of new projects come to fruition, it becomes critically important to address the range of managerial challenges that might arise for those developing these projects. Experience and Industry Specialization One of the key elements ...

  • Intensive Aquaculture - What Are the Benefits? - Case Study

    Land-based aquaculture involves farming fish and shrimp in contained tanks or ponds by pumping in water. It is usually characterized by significant land use, high water consumption and low productivity. AquaLifeNet has developed a system of free-standing fish tanks and mini-RAS biological filters that make intensive land-based fish farming possible even in places where land and water are ...


    By AquaLifeNet

  • Sustainable Aquaculture in Earthen Ponds - Case Study

    As aquaculture becomes more popular and sophisticated, many companies are offering exciting new technologies that require major infrastructure investment. But what about existing local fish farms – how can fish farmers keep up with developments without going into debt? The majority of land-based aquaculture centers around the world use earthen ponds. This traditional extensive farming ...


    By AquaLifeNet

  • Transgenic fish are ready for us. Are we ready for them?

    After decades of regulatory and legal challenges, AquaBounty aims to bring genetically engineered salmon to U.S. and Canadian markets next year. On a hill above the cold waters around Prince Edward Island, technicians painstakingly create fertilized Atlantic salmon eggs that include growth-enhancing DNA from two other fish species. The eggs will be shipped to ponds in the high rainforest of ...


    By Ensia

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