Chlorite
Mostrando 1-12 de 60 artigos, teses e dissertações.
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1. An alternative route to extract nickel and cobalt from non-commercial laterite ore
Abstract Laterite ores, which represent around two-thirds of nickel reserves, became an important source of nickel and cobalt metals. The objective of the present study was to investigate the efficiency of a hybrid route to extract nickel and cobalt present in a laterite ore sample which was not commercially attractive to be processed through the current rou
REM - International Engineering Journal. Publicado em: 2022
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2. Agroindustry Residues as a Source for Cellulose Nanofibers Production
Our study was motivated by the large amount of crop residues produced in Brazil, which represent underutilized waste biomass and a serious threat to the environment because of the landfilling. For example, even though the corn crop is not popular in Brazil, it is produced in the area of around 18-20 million hectares with an average production of 5-6 t ha-1.
J. Braz. Chem. Soc.. Publicado em: 2021-04
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3. The combined effect of exposure time to sodium chlorite (NaClO2) solution and packaging on postharvest quality of white button mushroom (Agaricus bisporus) stored at 4 °C
Abstract Agaricus bisporus was washed with 1 g/L sodium chlorite (NaClO2) (SC) solution for 30, 60 and 120 s, packed with a non-perforated polyvinyl chloride (PVC) film and stored at 4 °C for 12 days. Washing the mushrooms with the SC solution and packaging with the PVC film slowed down the change in colour and firmness of the mushrooms, but treating the mu
Food Sci. Technol. Publicado em: 2020-12
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4. Metamorphic modeling and petrochronology of metapelitic rocks from the Luminárias Nappe, southern Brasília belt (SE Brazil)
Abstract The Luminárias Nappe was formed in the agglutination of West Gondwana. A high-pressure metamorphic gradient oblique to the geological contacts is recorded in metapelitic rocks from this Nappe. In the northern portion, the metamorphic peak conditions are at high-pressure lower-amphibolite facies at 580 ± 4°C and ca. 0.9 GPa (Chl + Ky + St + Ms + Q
Braz. J. Geol.. Publicado em: 06/06/2019
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5. Análisis arqueométrico de pigmentos del sitio arqueológico Tambo Colorado por difracción de rayos X sincrotrón
ABSTRACT Despite the exceptional architecture and polychromy of archaeological site of Tambo Colorado, there has been no conservation work or in the architectural structures of raw earth, nor on the surfaces. These jobs require a proper understanding of the state of conservation of the site architecture and the analysis of the materials used. With this purpo
Matéria (Rio J.). Publicado em: 20/05/2019
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6. Enhancement of Hevea brasiliensis properties through chemical application
ABSTRACT The effects of four different types of bleaching agents (hydrogen peroxide, sodium hypochlorite, sodium chlorite and oxalic acid) mixed together with 2% boron-based preservative (Celbor SP) were studied on green sawn rubberwood. Two concentration levels (1% and 2%) of were used. Whitish values (W) and colour changes (ΔE) of sawn rubberwood were ass
An. Acad. Bras. Ciênc.. Publicado em: 2016-12
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7. Evaluation of Disinfectants Used in Pre-Chilling water Tanks of Poultry Processing Plants
ABSTRACT In poultry processing plants, disinfectants are often added to pre-chilling water tanks to reduce microbial contamination. The present study aimed at evaluating the effect of five disinfectants (acidified sodium chlorite, alkyl dimethyl benzyl ammonium chloride, chlorine dioxide, peracetic acid, and sodium hypochlorite) on the populations of food qu
Rev. Bras. Cienc. Avic.. Publicado em: 2016-06
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8. Desinfestação e estabelecimento in vitro de segmentos caulinares de camu-camuzeiro / Disinfestation and in vitro establishment of stem segments of camu-camu tree
The camu-camu tree (Myrciaria dubia (H.B.K.) McVaugh) is a fruit-bearing species belonging to the family Myrtaceae of spontaneous occurrence on the banks of rivers and lakes of Amazonia. It presents economic potential, since its fruits are thought the greatest natural source of vitamin C, bordering 6,112g of ascorbic acid per 100 g of pulp, arising commercia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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9. Tempo de exposição e fonte de cálcio na seleção de soja tolerante ao alumínio em hidroponia.
RESUMO: Realizaram-se testes com genótipos de soja para determinar qual a combinação entre a concentração e o período de exposição ao alumínio (Al) e a fonte de cálcio (cloreto ou nitrato), sendo esta mais eficiente na seleção de plantas tolerantes ao Al em solução nutritiva. Os genótipos avaliados foram BR86 5974, BR86 7396, BR86 7485, FT Cri
Planaltina. Publicado em: 2011
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10. Aplicação do dióxido de cloro no tratamento de água para consumo humano: desinfecção para controle de oocistos de Cryptosporidium sp., formação de subprodutos e manutenção de residuais desinfetantes em sistemas de distribuição / Chlorine dioxide use in drinking-water treatment: disinfection control of Cryptosporidium sp., byproducts formation, and maintenance of disinfectant residuals in distribution systems
This work aimed at evaluating the use of chlorine dioxide in drinking-water treatment, with emphasis on byproducts formation, maintenance of disinfectant residuals in distribution systems and removal of Cryptosporidium oocysts. In jar test experiments, the application of chlorine dioxide in samples of raw water (simulating pre-oxidation), settled and filtere
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2010
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11. Evolução magmática, alteração hidrotermal e gênese da mineralização de ouro e cobre do Palito, Província Aurífera do Tapajós (PA) / Magmatic evolution, hydrothermal alteration and geneseis of gold-copper mineralization at Palito, Tapajós Gold Province (PA)
The Palito porphyry type copper-gold deposit is located in the central region of the Amazonian craton, in the Tapajós Gold Province (TGP), in an area that is dominated by intermediate to felsic granitic and volcanic rocks of late Paleoproterozoic age. Three lithotypes make up this deposit. The Palito Granite, with porphyritic features, is the host rock for
Publicado em: 2010
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12. Geoquímica de rochas metabasálticas da mina da Palma, Bloco São Gabriel, escudo sul-rio-grandense: um possível platô oceânico
The Mina da Palma oceanic plateau is described for the first time in the São Gabriel Block, southern Brazilian Shield. It is composed mostly of metabasalts, marbles and metachert. Two deformational events are recognized in the Palma region, thrust faulting followed by dextral subvertical shearing. The rocks were metamorphosed in the greenschist facies, as s
Publicado em: 2010