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	Provedor de dados BABT (2) Autor Cuba,Renata Medici Frayne (2) Borba,Lana Lima (1) Castro,Martha Nascimento (1) Duarte,Iolanda Cristina (1) Foresti,Eugenio (1) Mendes,Thiago Augusto (1) Saavedra,Nora Katia (1) Terán,Francisco Javier Cuba (1) Varesche,Maria Bernadete Amâncio (1) Mais... Palavra-chave Adsorption (1) Agroindustrial waste (1) Biochar (1) Denitrification (1) Glyphosate commercial formulation (1) Methane oxidation (1) Methylomonas sp (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2019 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Use of Adsorbent Biochar from Pequi (Caryocar Brasiliense) Husks for the Removal of Commercial Formulation of Glyphosate from Aqueous Media BABT Borba,Lana Lima; Cuba,Renata Medici Frayne; Terán,Francisco Javier Cuba; Castro,Martha Nascimento; Mendes,Thiago Augusto. Abstract This study evaluated the capacity of adsorbent biochar derived from pequi husks to remove glyphosate (commercial formulation) in aqueous medium under three pH conditions (5.5, 7.0 and 8.0). This biochar presented a mean yield of 33.1% ± 2.66% and a high amount of surface particles of small dimensions endowing it with high surface area. The results showed that removal is proportional to pH increase in the range of 5.5 to 8.0. Adsorption assays performed at pH 7 and 8 fitted better to the Langmuir pseudo-first order kinetics model with fast adsorption in the first 15 to 30 minutes. The results for the acidic pH range fit none of the adopted models satisfactorily. The results obtained suggest that adsorbent can be used as an efficient and inexpensive... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agroindustrial waste; Glyphosate commercial formulation; Biochar; Adsorption. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100603 Denitrification coupled with methane anoxic oxidation and microbial community involved identification BABT Cuba,Renata Medici Frayne; Duarte,Iolanda Cristina; Saavedra,Nora Katia; Varesche,Maria Bernadete Amâncio; Foresti,Eugenio. In this work, the biological denitrification associated with anoxic oxidation of methane and the microbial diversity involved were studied. Kinetic tests for nitrate (NO3-) and nitrite (NO2-) removal and methane uptake were carried out in 100 mL batch reactors incubated in a shaker (40 rpm) at 30 ºC. Denitrificant/methanotrophic biomass was taken from a laboratory scale reactor fed with synthetic nitrified substrates (40 mgN L-1 of NO3- and subsequently NO2-) and methane as carbon source. Results obtained from nitrate removal followed a first order reaction, presenting a kinetic apparent constant (kNO3)) of 0.0577±0.0057d-1. Two notable points of the denitrification rate (0.12gNO3--N g-1 AVS d-1 and 0.07gNO3--N g-1 AVS d-1) were observed in the beginning... Tipo: Info:eu-repo/semantics/article Palavras-chave: Denitrification; Methylomonas sp; Methane oxidation. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000100022 Registros recuperados: 2 Primeira ... 1 ... Última

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