Consulta: creatorFacets:"Teixeira,Breno Cardoso"
Registros recuperados: 2
Data/hora: 02/06/2024 16:56:47

Functionalized Charcoal as a Buffering Matrix of Copper and Zinc Availability
Provedor de dados: 90
Autores: Guimarães,Gelton Geraldo Fernandes; Giroto,Amanda Soares; Teixeira,Breno Cardoso; Vergütz,Leonardus; Cantarutti,Reinaldo Bertola.
ABSTRACT: High copper (Cu) and zinc (Zn) contents in soil can cause phytotoxicity to plants and contaminate surface and groundwater, with negative effects on agriculture and the environment. Functionalized charcoal (OCh) has high cation exchange capacity (CEC) and the ability to adsorb Cu and Zn and control their availability in the soil and water. An adsorption study at two pH levels was carried out to evaluate increasing Cu and Zn sorption capacity provided by the functionalization process of a charcoal. In addition, a kinetics study of competitive and non-competitive adsorption-desorption of Cu and Zn in OCh was also evaluated. The results showed that functionalized charcoal (Ch) increased CEC 8.7 times due to an increase in carboxyl and phenolic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorption; Desorption; Metals; Remediation; Biochar.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100530

Value of Functionalized Charcoal for Increasing the Efficiency of Urea N Uptake: Insights into the Functionalization Process and the Physicochemical Characteristics of Charcoal
Provedor de dados: 90
Autores: Paiva,Diogo Mendes de; Guimarães,Gelton Geraldo Fernandes; Teixeira,Breno Cardoso; Cantarutti,Reinaldo Bertola.
ABSTRACT Functionalized charcoal (CHox) incorporated into urea is known for its ability to reduce NH3 volatilization and increase agronomic efficiency. However, it is important to optimize the functionalization process and to elucidate its relationship with the physicochemical properties of CHox for N supply. Thus, charcoal obtained from eucalyptus wood was functionalized with different HNO3 concentrations and reaction times. Ammonia adsorption by CHox was evaluated in chambers with high NH3 concentrations. Dry matter yield, N uptake, and apparent N recovery efficiency of corn plants were evaluated after the application of the urea-CHox mixture to soil in a greenhouse experiment. The properties of CHox, such as pH, isoelectric point, and total acidity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochar; NH3 adsorption; NH3 volatilization; Efficient fertilization.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100305