Clinoptilolite
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. K2O SUPORTADO EM ZEÓLITA NATURAL: SÍNTESE, CARACTERIZAÇÃO E APLICAÇÃO PRODUÇÃO DE BIODIESEL A PARTIR DO ÓLEO DE GIRASSOL
Biodiesel is a renewable fuel, a substitute for fossil diesel, which is important for reducing GHG in Brazil. Therefore, this work aims to synthesize and characterize the catalyst using the support of natural zeolite impregnated with K2O and apply it in the production of biodiesel through the transesterification reaction. Through the analysis of characteriza
Química Nova. Publicado em: 2022
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2. Reordering of Depolymerized Silicates as Adsorbents for Large Nitrogen Compounds
The adsorption capacities of two synthesized zeolites (crystalline ZSM-5 and semi-crystalline faujasite Y) for a mixture of indole, quinoline and carbazole were studied. The different samples obtained show different crystalline degree, mesoporosity and Si/Al ratios. The synthesis procedure is based on the simultaneous depolymerization of a mixture of high su
J. Braz. Chem. Soc.. Publicado em: 2021-01
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3. Crystallization of Zeolite A Coatings from Natural Zeolite
An investigation was carried out to determine the possibility of preparing coatings of synthetic zeolites on stainless steel from mixtures containing natural zeolite. Hydrothermal synthesis was applied and the coatings obtained were characterized by various techniques. It was observed that crystalline zeolite A coatings could be prepared from natural clinopt
Mat. Res.. Publicado em: 10/11/2016
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4. Nano Fe2O3, clinoptilolite and H3PW12O40 as efficient catalysts for solvent-free synthesis of 5(4H)-isoxazolone under microwave irradiation conditions
Uma abordagem rápida e sem solvente envolvendo a exposição de reagentes puros a radiação de micro-ondas em conjunto com o uso dos catalisadores clinopetilolita, H3PW12O40 e nanopartículas de Fe2O3 é descrita. Neste trabalho, a condensação de cloridrato de hidroxilamina, acetato de sódio, acetoacetato ou benzoilacetato de etila e aldeídos apropriad
J. Braz. Chem. Soc.. Publicado em: 2013-10
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5. Effects of dietary clinoptilolite and calcium levels on the performance and egg quality of commercial layers
Among the different feed additives studied in poultry production, clinoptilolite, an aluminosilicate capable of adsorbing harmful substances and of improving live performance and egg and meat quality, was evaluated. The objective of the present study was to evaluate the influence of dietary clinoptilolite and calcium levels on the performance and egg quality
Rev. Bras. Cienc. Avic.. Publicado em: 2013-09
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6. Effects of dietary clinoptilolite and calcium levels on uric acid and calcium blood concentrations and bone quality of commercial layers
The objective of the present study was to evaluate the effect of clinoptilolite and calcium levels on uric acid and calcium blood profile and bone quality of commercial layers. A total of 576 birds were distributed according to a completely randomized experimental design in a 3x4 factorial arrangement (calcium levels of 2.5, 3.1, or 3.7% and clinoptilolite l
Rev. Bras. Cienc. Avic.. Publicado em: 2013-06
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7. Increasing levels of zeolite and Yucca schidigera in diets for adult cats
The effect of the additives Yucca schidigera (YSC) and zeolite (clinoptilolite) on digestibility, fecal texture and odor, blood parameters and urine pH of domesticated felines was evaluated. The experiment was conducted in a randomized block design, with twenty-one cats, in two periods, distributed in seven treatments: moist commercial feed (control); contro
Revista Brasileira de Zootecnia. Publicado em: 2011-11
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8. Batch-wise adsorption, saxs and microscopic studies of zeolite pelletized with biopolymeric alginate
Removal of nitrates, sulfate and Zn(II) ions from aqueous solutions through adsorption onto biopolymeric alginate/clinoptilolite-rich tuff pellets was studied by using an equilibrium batch technique. The idea of this approach of biosorbent fabrication is to promote the native zeolite adsorption performance and thus to prepare more efficient amphoteric tailor
Brazilian Journal of Chemical Engineering. Publicado em: 2011-03
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9. Zeolita em dietas de bovinos de corte / Zeolite in diets for beef cattle
The objective was to evaluate the effect of adding different levels of zeolite on the intake and total and partial apparent digestibility of nutrients, ruminal parameters (pH and ammonia nitrogen), production of microbial nitrogen compounds, microbial efficiency and blood parameters (glucose and urea) in the diet of beef cattle. The treatments consisted of t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2010
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10. Increasing levels of zeolite (clinoptilolite) and Yucca schidigera in diets for adults cats / NÃveis de zeÃlita (clinoptilolita) e Yucca schidigera em raÃÃes de gatos adultos / NÃveis de zeÃlita (clinoptilolita) e Yucca schidigera em raÃÃes de gatos adultos / Increasing levels of zeolite (clinoptilolite) and Yucca schidigera in diets for adults cats
In order to evaluate the effect of additives zeolite (clinoptilolite) and extract of Yucca schidigera (YSC) to domestic cats, two tests were conducted at the Center for Nutrition of Companion Animals (CENAC) Federal University of Lavras, MG. At first, 21 cats were randomly allocated to seven treatments: wet commercial diet (control), control + 125, 250 and 3
Publicado em: 2009
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11. Remoção do íon amônio de águas produzidas na exploração de petróleo em áreas offshore por adsorção em clinoptilolita
This work describes the use of clinoptilolite for removal of ammonium ions present in waters produced at the Campos' Basin. Samples were previously treated in order to remove organic compounds and metals. Experiments were run in fixed- and fluidized-bed systems, at room temperature. The fluidized-bed systems did not remove efficiently the ammonium ion. The b
Química Nova. Publicado em: 2008
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12. Remoção de cor de efluente de tituraria em leito poroso / Color removal from textile wastewater in porous bed
Textile industry processes have one of the greatest wastewater productions, increasing quantitatively and qualitatively polluting load discharge in surface water. Colored water result of their process generate great environment damages once they not only reduce the water quality but also block sun light from penetrating in the aquatic ecosystem harming biota
Publicado em: 2007