Low Cost Adsorbents
Mostrando 1-12 de 16 artigos, teses e dissertações.
-
1. Avaliação de diferentes fatores na remoção de remazol brilliant blue de soluções aquosas por adsorção em fibras de cana de açúcar e coco verde
RESUMO As indústrias têxteis, durante o processo de tingimento, liberam uma grande quantidade de corantes na água. Além do seu efeito visual e seus impactos adversos em relação à fotossíntese e demanda química de oxigênio, muitos corantes sintéticos são tóxicos, recalcitrantes, mutagênicos e carcinogênicos. Dessa forma, novas alternativas de t
Matéria (Rio J.). Publicado em: 16/09/2019
-
2. Aplicação de processo adsortivo para dessulfurização de combustíveis utilizando fibra de coco como adsorvente
RESUMO A presença de compostos orgânicos contendo enxofre nos combustíveis é um dos contribuintes da poluição atmosférica, pois quando entram em combustão nos motores, emitem poluentes derivados do enxofre, como os óxidos (SOx), que afetam negativamente a saúde humana e o meio ambiente. A remoção do excesso de enxofre presente na gasolina pode se
Matéria (Rio J.). Publicado em: 16/09/2019
-
3. FUNCTIONALIZED GRAPHENE-BASED MATERIALS AS INNOVATIVE ADSORBENTS OF ORGANIC POLLUTANTS: A CONCISE OVERVIEW
ABSTRACT The functionalization of graphene nanosheets is the cutting edge of materials sciences nowadays. Such research promotes the development of innovative, low cost and highly capable sorbents. This review article aims to assemble the available information on functionalized graphene used for the adsorption of organic pollutants and establishes a critical
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
-
4. Storage of purified biogas (biomethane) at low pressure
ABSTRACT The global use of fossil energy sources has led to the need to develop technologies capable of mitigating its consequences. One such option is anaerobic biodigestion, which is already scientifically well-established, although the use of its main products (biogas and biomethane) still requires further development before they can be employed in automo
Braz. arch. biol. technol.. Publicado em: 22/10/2018
-
5. Removal of Remazol brilliant violet textile dye by adsorption using rice hulls
Abstract The release of industrial effluents into the environment causes widespread contamination of aquatic systems. Adsorption is seen as one of the most promising treatment processes, and lignocellulosic materials have gained prominence as adsorbents. This study investigates the potential of rice hulls, either in natura or treated with nitric acid, as ads
Polímeros. Publicado em: 2017-03
-
6. PREPARING AGRICULTURAL RESIDUE BASED ADSORBENTS FOR REMOVAL OF DYES FROM EFFLUENTS - A REVIEW
Abstract Industries engaged in dyeing operation generate coloured effluent due to the presence of spent dyes. Adsorption is among the various treatment processes employed for removal of dyes from effluents. Activated carbon is mostly used as an adsorbent in the treatment process. Attempts have been made by researchers to use non-conventional, low-cost, natur
Braz. J. Chem. Eng.. Publicado em: 2015-03
-
7. Biosorption and removal of chromium from water by using moringa seed cake (Moringa oleifera Lam.)
This study evaluated the adsorption capacity of chromium from contaminated aqueous solutions by using Moringa oleifera Lam. seeds. Parameters such as solution pH, adsorbent mass, contact time between solution and adsorbent, isotherms, thermodynamic, kinetics, and desorption were evaluated. The maximum adsorption capacity (Qm) calculated to be 3.191 mg g-1 fo
Quím. Nova. Publicado em: 2013
-
8. Estudo da captura de dióxido de carbono por misturas de hidróxido de cálcio e óxido de magnésio em baixas temperaturas
The present work has studied the carbonation reaction of hydrated lime modified by small percentages of magnesium dioxide (MgO) by the carbon dioxide (CO2) from the exhaust gas of a petrol engine. For this purpose, spherical pellets of solid adsorbents were synthesized and submitted to carbonation essays in a lab-scale fixed bed reactor. The samples conversi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
-
9. A kinetic and equilibrium study of zinc removal by Brazilian bentonite clay
This paper aimed to study the removal of zinc using bentonite clay from the Northeastern Brazil, as an adsorbent. A study of the clay subjected to thermal and chemical treatment was performed in order to evaluate the optimization of the adsorption capacity of this material. For the evaluation of the kinetic equilibrium of the process, experimental tests were
Mat. Res.. Publicado em: 02/11/2012
-
10. Adsorção de corantes têxteis utilizando biossorventes alternativos
The textile effluents when launched into water bodies reduce the penetration of sun light harming the photosynthesis processes. Besides this, the dyes have been pointed out as potentially toxic substances. In general, the removal processes are based on physicochemical systems followed by biological treatment. The sorption process, besides presenting high rem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
11. Estudo da ecotoxicidade de efluentes da mineração de carvão e a aplicação de adsorventes alternativos em associação com fotocatálise heterogênea na remoção de metais e HPAs
A concentração de Fe, Ni, Cd, Mn, Zn, Cr e Pb, determinada por TXRF, foi investigada em matrizes de água, sedimento e fígados de peixes, amostrados em rios da região mineradora de carvão de Criciúma - SC/Brasil - afetadas por descargas de drenagem ácida de mina (DAM). A relação destes metais com a toxicidade para o bioindicador Daphnia magna (24 e
Publicado em: 2010
-
12. Biosorvents synthesis and characterization from imobilized Sargassum sp biomass using sol-gel process in ceramics matrix / Sintese e caracterização de biossorventes a partir da imobilização da biomassa Sargassum sp em matrizes ceramicas pelo processo sol-gel
In this work had been made a research and the development of an alternative adsorbent which may be applied in the treatment of industrial liquid effluents containing low concentration of heavy metals, Cd, Cu and Zn. The main objective was to produce 4A type zeolite-Sargassum sp. adsorbents spheres with the following characteristics: competitive fabrication c
Publicado em: 2007