Heavy metals removal from influents to prevent mortality in salmon fry |
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| Institution: | 1. Department of Microbiology, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand;2. Aquatic Molecular Genetics and Biotechnology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Paholyothin Road, Klong 1, Klongluang, Pathumthani 12120, Thailand;3. National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathumthani 12120, Thailand;4. Center of Excellence for Shrimp Molecular Biology and Biotechonology, Mahidol University, 272 Rama VI Road, Bangkok, 10400, Thailand;1. Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China;2. Marine Biology Institute, Shantou University, Shantou, 515063, China;3. STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, 515063, China;4. Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen, China;1. Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China;2. Marine Biology Institute, Shantou University, Shantou 515063, China;3. Department of Pharmacology and Cancer Biology, Durham, North Carolina 27710;6. Department of Biochemistry, Durham, North Carolina 27710;4. Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina 27710;5. Department of Biochemistry and Redox Biology Center, University of Nebraska, Lincoln, Nebraska 68588 |
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| Abstract: | The concentration of heavy metals in water, above certain values, threaten industrial salmon production and have occurred in two of the most important salmon producers, Norway and Chile. Aluminum and iron are two of the main heavy metals found in fresh water of the salmon industry, although manganese, zinc and copper have also been detected. In Chile, an experimental study found a solution to remove aluminum, iron and manganese. The present works studies copper and zinc removal by ionic exchange using AMBERLITE IRC747. The resin's removal capacity is 0.025 meq/g and does not depend on the solution's pH. An ionic exchange column was designed and continuously operated to remove copper and zinc from concentrations equal to 1000 μg/L of each metal. Then, the column was modularly operated with an aluminum, iron and manganese abatement system removing them by precipitation, oxidation (for iron and manganese) and granular filtration. When operating the modular system, the final aluminum, copper, iron, manganese, and zinc concentrations were 0.1, 0.4, 0.6, 0.8 and 0.3 μg/L, respectively. As a result, the system implemented obtained values below the maximum limits allowed for aluminum, iron, manganese, copper and zinc. |
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| Keywords: | Heavy metals Aquaculture Salmon fry |
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