Aquaculture industry: Supply and demand, best practices, effluent and its current issues and treatment technology.

The seafood industry generates large volumes of wastes. These include processing discards consisting of shell, head, bones, intestine, fin, skin and others, and also low-value under-utilized fish, which are caught as by-catch of commercial fishing operations. In addition, fish processing generates voluminous amounts of wastewater as effluents. The discards, by-catch and effluents are rich in nutrients including proteins, amino acids, polyunsaturated fatty acids (PUFA) rich lipids, carotenoids, and minerals. The seafood wastes lead to losses of nutrients as well as serious environmental hazards. It is important that these wastes are treated by secondary processing to address the problems. Unlike most chemical processes biological treatments are environmental friendly, safe and cost-effective. These are based on bioconversions of components of the seafood waste into valuable ingredients, which are then recovered by green technologies. The bioconversion processes make use of microbial fermentations or direct actions of exogenously added enzymes. Recent developments in algal biotechnology offer novel processes for bioconversion of seafood components into algal biomass, which can be used as feedstock for the recovery of useful ingredients including biofuel. Integration of multiple processes into biorefinery have potentials for eco-friendly and cost-effective valorization of seafood wastes, which in turn can support sustainable seafood production and bioeconomy .

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Valorization of Seafood Processing Discards: Bioconversion and Bio-Refinery Approaches

Solids management in freshwater-recirculating aquaculture systems: Effectivity of inorganic and organic coagulants and the impact of operating parameters.

Recovery of nutrients from fish sludge in an aquaponic system using biological aerated filters with ceramsite plus lignocellulosic material media

Nitrogen, a critically important nutrient that boosts yields in agriculture and food production, is currently overused to meet the rising demand for food. Surplus nitrogen ends up in the environmen...

Soba Kaluthota

Papers

Aerobic bioconversion of aquaculture solid waste into liquid fertilizer: effects of bioprocess parameters on kinetics of nitrogen mineralization.

Phosphorus delays the onset of nitrification during aerobic digestion of aquaculture/aquaponic solid waste