Maurício César Palmieri

Dr. Maurício César Palmieri


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 January 2019 in Metals
Verified
Journal Article
Open access
PDF file
DNDryelle Nazaré Oliveira Do Nascimento
Dryelle Nazaré Oliveira Do Nascimento
ALAdriano Reis Lucheta
Adriano Reis Lucheta
MPMaurício César Palmieri
Maurício César Palmieri
ACAndre Luiz Vilaça Do Carmo
Andre Luiz Vilaça Do Carmo
PSPatricia Magalhães Pereira Silva
Patricia Magalhães Pereira Silva
JAJoner Alves
Joner Alves
The use of biotechnology to explore low-grade ore deposits and mining tailings is one of the most promising alternatives to reduce environmental impacts and costs of copper extraction. However, such technology still depends on improvements to be fully applied in Brazil under industrial scale. In this way, the bioleaching, by Acidithiobacillus ferrooxidans, in columns and stirred reactors were evaluated regarding to copper extraction of a mineral sulfide and a weathered ore from the Brazilian Amazon region. Samples (granulometry of 2.0/4.75 mm) were characterized by X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF) spectrometry and scanning electrons microscopy (SEM). The pH and Oxidation-reduction potential (Eh) were daily monitored and leachate samples were collected for copper extraction determination by EDXRF. After 47 days, the columns bioleaching efficiency was 1% (1298 mg Cu·L−1) and 0.95% (985 mg Cu·L−1) for 2.00/4.75 mm sulfide ore, respectively, whereas the stirred reactors bioleaching resulted in 4% (348 mg Cu·L−1) for the mineral sulfide and 47% (295.5 mg Cu·L−1) for the weathered ore.

1 January 2018 in Tecnologia em Metalurgia, Materiais e Mineração
Verified
Journal Article
Closed access
DNDryelle de Nazaré Oliveira Do Nascimento
Dryelle de Nazaré Oliveira Do Nascimento
MPMaurício César Palmieri
Maurício César Palmieri
ACAndre Luiz Vilaça Do Carmo
Andre Luiz Vilaça Do Carmo
ENEmanuele Pereira Nogueira
Emanuele Pereira Nogueira
ALAdriano Reis Lucheta
Adriano Reis Lucheta
JAJoner Alves
Joner Alves