High nutrient removal rate from swine wastes and protein biomass production by full-scale duckweed ponds

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High nutrient removal rate from swine wastes and protein biomass production by full-scale duckweed ponds

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dc.contributor.author Belli Filho, Paulo
dc.contributor.author Costa, Rejane H. R.
dc.contributor.author Mohedano, Rodrigo A.
dc.contributor.author Tavares, Flávia A.
dc.date.accessioned 2015-03-09T18:04:21Z
dc.date.available 2015-03-09T18:04:21Z
dc.date.issued 2012-02-16
dc.identifier.other doi:10.1016/j.biortech.2012.02.083
dc.identifier.uri https://repositorio.ufsc.br/xmlui/handle/123456789/130375
dc.description Artigo publicado em: Elsevier - Bioresource Technology pt_BR
dc.description.abstract Duckweed ponds have been successfully used in swine waste polishing, generating a biomass with high protein content. Therefore, the present study evaluated the efficiency of two full-scale duckweed ponds considering nutrient recovery from a piggery farm effluent (produced by 300 animals), as well as the biomass yield and crude protein (CP) content. A significant improvement in the effluent quality was observed, with the removal of 98.0% of the TKN (Total Kjeldahl Nitrogen) and 98.8% of the TP (Total Phosphorous), on average. The observed nitrogen removal rate is one of the highest reported (4.4 g/m2day of TKN). Additionally, the dissolved oxygen level rose from 0.0 to 3.0 mg/L, on average. The two ponds together produced over 13 tons of biomass (68 t/hayear of dry biomass), with 35% crude protein content. Because of the excellent nutrient removal and protein biomass production, the duckweed ponds revealed a great potential for the polishing and valorisation of swine waste, under the presented conditions. pt_BR
dc.language.iso en_US pt_BR
dc.subject Duckweed pond pt_BR
dc.subject Swine waste pt_BR
dc.subject Biomass production pt_BR
dc.subject Landoltia punctata pt_BR
dc.subject Nutrient recovery pt_BR
dc.title High nutrient removal rate from swine wastes and protein biomass production by full-scale duckweed ponds pt_BR
dc.type Article pt_BR


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