Research Article: Nutrient removal from rainbow trout juveniles in fish ponds using integrated biofilter duckweed (Lemna minor) and freshwater mussel (Anodonta cygnea)
Publish place: Iranian Journal of Fisheries Sciences، Vol: 23، Issue: 3
Publish Year: 1403
نوع سند: مقاله ژورنالی
زبان: English
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JR_JIFRO-23-3_002
تاریخ نمایه سازی: 17 اردیبهشت 1403
Abstract:
A biological filter (biofilter) is a technique that aims to degrade nutrients that are wasted in water bodies by utilizing living organisms such as plants and shellfish. The study aims to determine the potential of duckweeds (Lemna minor)-freshwater mussel (Anodonta cygnea) integrated biofilters in utilizing nutrients from wastewater from rearing rainbow trout (Oncorhynchus mykiss) juveniles. This study used the initial weight of ۲۵±۲.۰g of rainbow trout juveniles, freshwater mussels (A. cygnea) with an initial weight of ۵۸±۲.۰ g, and duckweeds (L. minor) with two different biomass weights (treatment ۱: ۲۷۰ g and treatment ۲: ۳۶۰ g) were used in the flow-through system. The water temperature was around ۱۳-۱۴oC during the experimental periods. Using duckweeds as a biofilter with two different stocking densities significantly affected (p<۰.۰۵) the pH, DO, nitrate, and total phosphorus values in the treatment tanks. This study's results also revealed that using duckweed-freshwater mussels integrated biofilters could minimize the concentration of ammonium and total phosphorus in wastewater from rainbow trout juvenile rearing tanks.
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Authors
M.H. Azhar
Universitas Airlangga
D. Memiş
Istanbul University
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