Chitosan Iron
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Use of chitosan in the remediation of water from purification of biodiesel
Abstract This article evaluates the efficiency of the degradation of pollutants present in water from the purification of biodiesel, characterized by high content of chemical oxygen demand (COD), suspended solids (SS), oils and greases, methanol, soap, and glycerol. The treatment process proposed was of the photo-Fenton type using iron immobilized in chitos
Polímeros. Publicado em: 29/11/2018
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2. NANOBIOCATALYTIC SYSTEMS BASED ON LIPASE-Fe3O4 AND CONVENTIONAL SYSTEMS FOR ISONIAZID SYNTHESIS: A COMPARATIVE STUDY
Abstract Superparamagnetic nanomaterials have attracted interest in many areas due to the high saturation magnetization and surface area. For enzyme immobilization, these properties favor the enzyme-support contact during the immobilization reaction and easy separation from the reaction mixture by use of low-cost magnetic processes. Iron oxide magnetic nanop
Braz. J. Chem. Eng.. Publicado em: 2016-09
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3. Preparation and evaluation of chitosan beads immobilized with Iron(III) for the removal of As(III) and As(V) from water
O adsorvente quitosana-Fe(III)-reticulado (Ch-FeCL) foi desenvolvido usando Fe(III) imobilizado em esferas de quitosana. Após o processo de secagem, as esferas apresentam um diâmetro de cerca de 1 mm e são estáveis ao ar. O comportamento de adsorção do As(III) e As(V) na Ch-FeCL foi avaliado em pH 7 por estudos realizados em batelada e em coluna. As m�
J. Braz. Chem. Soc.. Publicado em: 2013-01
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4. Elimination of dyes from aqueous solutions using iron oxides and chitosan as adsorbents: a comparative study
This work investigates the adsorption of Alizarin, Eriochrome Blue Black R and Fluorescein using chitosan, goethite and magnetite as adsorbents. For Alizarin, the best adsorbent is chitosan with a Langmuir parameter of 15.8 mmol dye/g adsorbent. For Eriochrome Blue Black R only 1.94 mmol dye/g chitosan is adsorbed. Langmuir parameters for the Alizarin adsorp
Química Nova. Publicado em: 2009
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5. SÃntese de esferas hÃbridas e seu desempenho na reaÃÃo de desidrogenaÃÃo do etilbenzeno na presenÃa de diÃxido de carbono / Synthesis of hybrid spheres and their performance in the dehydrogenation reaction of ethylbenzene in carbon dioxide presence
The various possibilities of application of the mesoporous materials, such as catalysis and adsorption, it have encouraged the research in the synthesis of these materials. In addition, but less frequent, synthetic routes have been searched in order to obtain a material whose structure and grain size allow its application in industrial reactors, without the
Publicado em: 2009
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6. Adsorção de arsênio(V) pela quitosana ferro - III reticulada
The removal of As(V) by a crosslinked iron(III)-chitosan adsorbent was evaluated under various conditions. The adsorption capacity of CH-FeCL was around 54 mg/g of As(V). The kinetics of adsorption obeys a pseudo-first-order model with rate constants equal to 0.022, 0.028, and 0.033 min-1 at 15, 25 and 35 ºC respectively. Adsorption data were well described
Química Nova. Publicado em: 2008
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7. AVALIAÇÃO DOS EFEITOS DO COMPLEXO QUITOSANA FERRO-III SOLÚVEL E INSOLÚVEL EM ANIMAIS TRATADOS COM ALOXANO / EVALUATION OF THE EFFECTS OF THE SOLUBLE AND INSOLUBLE IRON (III) -CHITOSAN COMPLEX IN ANIMALS TREATED WITH ALLOXAN
Chronic Kidney Disease consists of renal lesion and progressive, irreversible loss of glomerular, tubular and endocrine functions of the kidneys. Diseases like Diabetes mellitus and hypertension account for 79% of all cases of final stage renal disease requiring treatments like dialysis or transplant. In Chronic Renal Insufficiency (CRI), the absence of rena
Publicado em: 2007
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8. Composition of the cell wall from the ectomycorrhizal fungus Pisolithus microcarpus and Pisolithus tinctorius / Composição da parede celular dos fungos ectomicorrízicos Pisolithus microcarpus e Pisolithus tinctorius
This work aimed at assessing the chemical composition of the cell wall of isolates PT301 of Pisolithus tinctorius and H4111 of Pisolithus microcarpus, and see the effects of fungicides dimethomorph and pyroquilon in concentrations of 1, 5, 10, 15 and 30 ppm and chitosan in concentrations of 1, 2, 5 and 10 mg mL-1 on the micelial morphology. The wall of Pisol
Publicado em: 2007
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9. Microesferas de quitosana reticuladas com tripolifosfato utilizadas para remoção da acidez, ferro(III) e manganês(II) de águas contaminadas pela mineração de carvão
Considerable attention has been paid to chitosan and derivatives as efficient adsorbents of pollutants such as metal ions and dyes in aqueous medium. Nevertheless, no report can be found on the remedial actions of chitosan microspheres crosslinked with tripolyphosphate to control acidity, iron (III) and manganese (II) contents in wastewaters from coal mining
Química Nova. Publicado em: 2006-02
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10. AVALIAÇÃO TOXICOLÓGICA CRÔNICA DO POLÍMERO QUITOSANA FERRO(III) SOLÚVEL / CHRONIC TOXICOLOGY AVALIATION OF SOLUBLE IRON (III) CHITOSAN
Hyperphosphatemia is a common problem in patients with chronic renal failure, particularly in those who have reached end-stage renal diseased. The main methods of achieving control of the increased of phosphate are reduction of dietary intake, reduction of gastrointestinal absorption by use of binding agents and removal by dialysis. In this study, we evaluat
Publicado em: 2006
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11. STUDY ON THE INTERACTION OF THE POLYMER CHITOSAN-IRON(III)R WITH INORGANIC IONS IN AQUEOUS MEDIA / ESTUDO DA INTERAÇÃO DO POLÍMERO QUITOSANA-FERRO(III)-R COM ÍONS INORGÂNICOS EM MEIO AQUOSO
A Extração em Fase Sólida (EFS) é um método muito utilizado para a extração e purificação de substânicas presentes em matrizes complexas ou soluçõe smuito diluídas. Na EFS geralmente são utilizados sólidos porosos com grande área superficial, para a interação com a fase líquida, na qual a substância está dissolvida. Um suporte sólido qu
Publicado em: 2006
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12. CHARACTERIZATION, STABILITY AND MAGNETIC PROPERTIES OF CHITOSAN IRON POLYMER / CARACTERIZAÇÃO, ESTABILIDADE E PROPRIEDADES MAGNÉTICAS DO POLÍMERO QUITOSANA FERRO
A pesquisa de compostos metalo-orgânicos continua a atrair muita atenção devido suas propriedades funcionais adequadas à aplicação na medicina, farmácia e engenharia biomédica, mas também à pesquisa na área de magnetismo e materiais diretamente ligados a metais que combinem transição dos íons metálicos com os ligantes que os rodeiam. O tamanho
Publicado em: 2006