Search Results - "Viana, Rúbia R."

Adsorption of thorium cation on modified clays MTTZ derivative by Guerra, Denis L., Viana, Rúbia R., Airoldi, Claudio

“…Diquite (D) and bentonite (B) mineral samples from the Amazon region, Brazil, were modified by MTTZ derivative (5-mercapto-1-methyltetrazole) using…”
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Adsorption of methylene blue on raw and MTZ/imogolite hybrid surfaces: Effect of concentration and calorimetric investigation by Guerra, Denis L., Batista, Adriano C., Viana, Rúbia R., Airoldi, Claudio

“…The synthetic imogolite sample was used for organofunctionalization process with 2-mercaptothiazoline (MTZ). The compound 2-mercaptothiazoline was anchored…”
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Use of raw and chemically modified hectorites as adsorbents for Th(IV), U(VI) and Eu(III) uptake from aqueous solutions by Guerra, Denis L., Viana, Rúbia R., Airoldi, Claudio

“…Hectorite (H) clay sample from the Amazon region, Brazil, has been modified with 2-mercaptobenzimidazole (MBI) using homogeneous and heterogeneous routes. The…”
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Application of Brazilian kaolinite clay as adsorbent to removal of U(VI) from aqueous solution: Kinetic and thermodynamic of cation–basic interactions by Guerra, Denis L., Leidens, Victor L., Viana, Rúbia R., Airoldi, Claudio

“…The compound N 1-[3-(trimethoxysilyl)propyl]diethylenetriamine was anchored onto Amazon kaolinite surface by heterogeneous route. The modified and natural…”
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Adsorption of arsenic ions on Brazilian sepiolite: Effect of contact time, pH, concentration, and calorimetric investigation by Guerra, Denis L., Batista, Adriano C., Corrêa da costa, Paulo C., Viana, Rúbia R., Airoldi, Claudio

“…This investigation reports the use of original and modified sepiolite as alternative absorbents. The compound 2-aminomethylpyridine was anchored onto Amazon…”
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Organofunctionalized Amazon smectite for dye removal from aqueous medium—Kinetic and thermodynamic adsorption investigations by Guerra, Denis L., Silva, Weber L.L., Oliveira, Helen C.P., Viana, Rúbia R., Airoldi, Claudio

“…The objective of this study is to examine the adsorption behavior of Sumifix Brilliant Orange 3R textile dye from aqueous solution on smectite sample, an…”
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Designed pendant chain covalently bonded to analogue of heulandite for removal of divalent toxic metals from aqueous solution: Thermodynamic and equilibrium study by GUERRA, Denis L, VIANA, Rúbia R, AIROLDI, Claudio

“…An analogue of heulandite was synthesized by using inorganic salts as a source for silicon and aluminum in the hydrothermal synthesis of the material. The…”
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Layer silicates modified with 1,4-bis(3-aminopropyl)piperazine for the removal of Th(IV), U(VI) and Eu(III) from aqueous media by GUERRA, Denis L, PINTO, Alane A, VIANA, Rúbia R, AIROLDI, Claudio

“…Natural montmorillonite (M) and synthetic kanemite (K) have been functionalized with 1,4-bis(3-aminopropyl)piperazine reacted with methylacrylate to yield new…”
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Sodium alginate films modified by raw and functionalized attapulgite for use of thorium(IV) adsorption: A thermodynamic approach by GUERRA, Denis L, VIANA, Rúbia R, DA COSTA, Luiz P, AIROLDI, Claudio

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Immobilization of 5-amino-1,3,4-thiadiazole-thiol onto kanemite for thorium(IV) removal: Thermodynamics and equilibrium study by GUERRA, Denis L, CARVALHO, Marcos A, LEIDENS, Victor L, PINTO, Alane A, VIANA, Rúbia R, AIROLDI, Claudio

“…The compound 5-amino-1,3,4-thiadiazole-thiol (ATT) was anchored onto an Amazon kanemite surface (K) by homogeneous and heterogeneous routes. Both kanemite…”
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Use of natural and modified magadiite as adsorbents to remove Th(IV), U(VI), and Eu(III) from aqueous media; thermodynamic and equilibrium study by Guerra, Denis L, Ferrreira, Josane N, Pereira, Mário J, Viana, Rúbia R, Airoldi, Claudio

“…The contamination of aquatic environments by toxic metals such as radionuclides is of great concern because of the tendency of those metals to accumulate in…”
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Modification of magadiite surface by organofunctionalization for application in removing As(V) from aqueous media: Kinetic and thermodynamic by GUERRA, Denis L, PINTO, Alane A, VIANA, Rúbia R, AIROLDI, Claudio

“…A synthetic Na-magadiite sample has been modified by organofunctionalization process using synthetic route involved the reaction of 2-mercaptopyrimidine with…”
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Adsorption of rubidium on raw and MTZ- and MBI-imogolite hybrid surfaces: An evidence of the chelate effect by Guerra, Denis L, Batista, Adriano C, Viana, Rúbia R, Airoldi, Claudio

“…Imogolite is an important paracrystalline hydrous aluminosilicate with a unique nanofiber structure. The synthetic imogolite sample was used for…”
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Amazon kaolinite functionalized with diethylenetriamine moieties for U(VI) removal: Thermodynamic of cation-basic interactions by Guerra, Denis L., Leidens, Victor L., Viana, Rúbia R., Airoldi, Claudio

“…The compound N-[3-(trimethoxysilyl)propyl]diethylenetriamine (MPDET) was anchored onto Amazon kaolinite surface (KLT) by heterogeneous route. The modified and…”
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Chemical zoning of muscovite megacrystal from the Brazilian Pegmatite Province by Viana, Rúbia R., Evangelista, Hanna J., Stern, Willem B.

“…Macroscopically homogenous muscovite plate from the Cruzeiro pegmatite, located in the Eastern Pegmatite Province in Minas Gerais, may show complex…”
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Adsorption of chromium(VI) ions on Brazilian smectite: Effect of contact time, pH, concentration, and calorimetric investigation by Guerra, Denis L., Oliveira, Helen C.P., da Costa, Paulo C. Corrêa, Viana, Rúbia R., Airoldi, Claudio

“…The original smectite clay mineral has been collected from Amazon region, Brazil. The compound 2-aminomethylpyridine (AMP) was anchored onto Amazon smectite…”
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Application of natural and modified hectorite clays as adsorbents to removal of Cr(VI) from aqueous solution-Thermodynamic and equilibrium study by GUERRA, Denis L, VIANA, Rúbia R, AIROLDI, Claudio

“…A hectorite (H) clay sample has been modified with 2-mercaptobenzimidazole (MBI) using homogeneous and heterogeneous routes. Both modification methodologies…”
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Adsorption of thorium(IV) on chemically modified Amazon clays by Guerra, Denis L., Viana, Rúbia R., Airoldi, Claudio

“…Kaolinite and smectite clay samples from the Amazon region, Brazil, were modified with 2-mercaptobenzimidazole (MBI) using homogeneous and heterogeneous…”
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Modification of hectorite by organofunctionalization for use in removing U(VI) from aqueous media: thermodynamic approach by GUERRA, Denis L, AIROLDI, Claudio, VIANA, Rúbia R

“…A Hectorite sample (H) has been chemically modified with N-propyldiethylenetrimethoxysilane and bis[3-(triethoxysilyl)propyl]tetrasulfide. The resulting…”
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Retraction notice to: Modification of hectorite by organofunctionalization for use in removing U(VI) from aqueous media: Thermodynamic approach by Guerra, Denis L., Airoldi, Claudio, Viana, Rúbia R.

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