Banca de QUALIFICAÇÃO: HERCÍLIA SAMARA CARDOSO DA COSTA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : HERCÍLIA SAMARA CARDOSO DA COSTA
DATA : 14/11/2019
HORA: 14:00
LOCAL: Auditório PgAgro
TÍTULO:

POTENTIALLY TOXIC ELEMENTS IN IRON MAGNETIZED BIOCHAR GOLD MINE SOIL

PALAVRAS-CHAVES:

Biocarbon. Ipomea asarifolia. Multicontaminated soils. Remediation

 

Biochar. Ipomea asarifolia. Multicontaminated soils. Remediation

PÁGINAS: 44
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Ciência do Solo
ESPECIALIDADE: Manejo e Conservação do Solo
RESUMO:

The increasing environmental pollution in recent decades has caused potentially toxic elements (PTEs), a constant threat to terrestrial and aquatic ecosystems, due to their persistence in the environment and their deleterious effects on the environment and human health. The use of biochar and PTE-tolerant species and their use in environmental remediation processes has been of great interest to the research, as they are economically viable and ecologically sound techniques. The objective of this study was to evaluate the influence of unmagnetized (BC) and iron magnetized (BFe) acai biochar on the availability of PTEs from a multicontaminated mining area soil in the Amazon. The experiment was conducted in the greenhouse of the Federal Rural University of Amazonia, in a 7 x 4 factorial scheme (7 treatments and 4 repetitions): T1 = contaminated soil (SC), T2 = soil kill (SM), T3 = soil kill ( SM), T3 = SC + SM, T4 = SC + SM + BC, T5 = SC + SM + BFe, T6 = SC + BC, T7 = SC + BFe. BC raises the pH of the procedures while BFe lowers the pH. The application of biocarbons increased the levels of Ca, Mg, P and K in the soil. However, they were not available due to the adsorption of these elements on the surface of the biochars. Biocarbons affected the mobility of PTEs in the soil, reducing the levels of oxidizable fraction (bound to organic matter). As the plants cultivated with biocarbons presented lower yield of dry matter, besides the higher concentration of PTEs and smaller of nutrients. This suggests that PTEs bound to the oxidizable fraction were solubilized by the decomposition of biocarbons, resulting in greater plant uptake.

MEMBROS DA BANCA:
Presidente - 6388356 - ANTONIO RODRIGUES FERNANDES
Externo à Instituição - LEÔNIDAS CARRIJO AZEVEDO MELO - UFLA
Externo à Instituição - EVANISE SILVA PENIDO - UFLA
Externo à Instituição - EDNA SANTOS DE SOUZA - UNIFESSPA