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- Title
USO DE QUITINA E QUITOSANA COMO ADSORVENTES DE AMÔNIA DE EFLUENTES AQUÍCOLAS: REVISÃO DE LITERATURA.
- Authors
Bernardi, Fernanda
- Abstract
Aquaculture residues are derived from fish feed and excretion and may be sedimented, suspended or dissolved, resulting in high BOD, COD, nitrogen and phosphorus values. Shrimp production in Brazil has generated high amounts of solid waste, since shrimp exoskeletons account for about 40% of their total weight, resulting in a strong environmental impact. Several researches involving chitin are being developed in the area of water treatment, mainly due to its ability to form film, being used in filter systems. This polysaccharide can also be used as a flocculating agent in the treatment of effluents, as an adsorbent in the clarification of oils, and especially in the production of chitosan. Currently, chitosan has multidimensional applications, from areas such as human nutrition, biotechnology, materials science, pharmaceutical industry, agriculture, gene therapy and environmental protection. Chitosan is very efficient in the removal of pollutants at different concentrations. It presents high capacity and high adsorption velocity, good efficiency and selectivity both in solutions that have high or low concentrations. The use of biotechnology, through the adsorption process using natural and cheap adsorbents such as chitin and chitosan, minimizes the environmental impacts of aquaculture both in relation to those caused by the release of effluents into the environment and those caused by the inappropriate disposal of processing residues of shrimps.
- Publication
Arquivos de Ciências Veterinárias e Zoologia da Unipar, 2022, Vol 25, Issue 2, p1
- ISSN
1415-8167
- Publication type
Article
- DOI
10.25110/arqvet.v25i2conv.20226378