the growth of S. equisimilis and on the sorption capacity of S. equisimilis, vermiculite, and a S. equisimilis biofilm supported on vermiculite are reported by our team in Costa et al. (2014) and Quintelas et al. (2011, 2012). Bioremoval of diethylketone and Cd 2+ by a S. equisimilis biofilm supported in vermiculite—pilot scale experiments
Get PricePortugal b Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30060, Krakow, Poland highlights graphical abstract Combined NaOH/acid treatment of vermiculite increased its adsorption capacity. Mixture of EtOH and NaCl solution was used for efficient adsorbent regeneration. Different behavior of dyes was observed in binary mixtures.
Get Pricedeposits, Western Portugal The clay fractions in the Pliocene to Pleistocene coastal margin record are usually dominated by kaolinite and illite, with lesser amounts of vermiculite, 1014 mixed layer clays and smectite. The high clay mineral crys ... by Xray diffraction (XRD). The analysis was con
Get PriceAdanson, who derived the genus name from the Chinese epithet for one of the species, described the genus Kalanchoe in 1763. The species name luciae honours Lucy Dufour, for whom this species was named by Raymond Hamet in 1908.. The genus Kalanchoe occurs most abundantly in Madagascar but also throughout Africa, Cyprus, Indochina and is a very well .
Get Price10/04/2018 · Removal of emerging pollutants, such as pharmaceuticals, from wastewater is a challenge. Adsorption is a simple and efficient process that can be applied. Clays, which are natural and lowcost materials, have been investigated as adsorbent. In this work, raw vermiculite and its three modified forms (expanded, base, and acid/base treated) were tested for removal of a widely used .
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Get PriceWeathering of granites in a temperate climate (NW Portugal): granitic saprolites and arenization Sequeira Bragaa,*, H. Paquetb, A. Begonhac aDepartamento de Cieˆncias da Terra, CCA/CT, Universidade do Minho, Braga, Portugal bCentre de Ge´ochimie de la Surface (CNRS), 1, Rue Blessig, 67084 Strasbourg, Cedex, France cFaculdade de .
Get Price22/03/2016 · 22/03/2016 · The influence of different acid treatments over vermiculite was evaluated. Equilibrium, kinetic and column studies have been conducted. The results showed that vermiculite first treated with nitric acid and then with citric acid has higher adsorption capacity, presenting maximum adsorption capacities in column experiments: for Astrazon Red (AR), .
Get PriceAsbestos Analysis of Vermiculite Vermiculite Containing Materials. Overview. Vermiculite is a problem matrix for asbestos analysis. Large particle size, sample heterogeneity and the presence of nonregulated amphiboles are just some of the issues associated with this material. There are numerous analytical approaches available that try to ...
Get PriceXray diffraction (XRD) was used from the analysis of the vermiculite as received to the nanocomposite characterization using coupling agents. These results were confirmed using the transmission electronic microscopy (TEM) and scanning electronic microscopy (SEM), using focused ion beam (FIB), as well.
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Get Price31/08/2002 · The clay fraction is characterized by a predominance of kaolinite and gibbsite, with subordinate 2:1 minerals (illite, chlorite, vermiculitic mixed layers, vermiculite). The significance of the secondary minerals in granitic saprolites from Northwest Portugal is .
Get Price01/01/1990 · Amphibole weathering to vermiculite in ferromagnesian sandy grains of saprolite and C horizon of a Typic Rhodoxeralf from southern Portugal is studied. Minerals identifiion and alteration studies were accomplished by Xray diffraction, optical and electron (scanning and transmission) microscopy and electron microprobe analysis.
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Get PriceWeathering of granites in a temperate climate (NW Portugal): granitic saprolites and arenization Sequeira Bragaa,*, H. Paquetb, A. Begonhac aDepartamento de Cieˆncias da Terra, CCA/CT, Universidade do Minho, Braga, Portugal bCentre de Ge´ochimie de la Surface (CNRS), 1, Rue Blessig, 67084 Strasbourg, Cedex, France cFaculdade de Engenharia da Universidade do Porto, Rua .
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Get Price01/01/1990 · Amphibole weathering to vermiculite in ferromagnesian sandy grains of saprolite and C horizon of a Typic Rhodoxeralf from southern Portugal is studied. Minerals identifiion and alteration studies were accomplished by Xray diffraction, optical and electron (scanning and transmission) microscopy and electron microprobe analysis.
Get PriceThe vermiculite when expanded decreases its hydrophobicity requiring the use of a hydrophobizing leaving the organoclay. In this work were used in the process of modifying the particle sizes of vermiculite 18+16, 16 +20 and 20 +35 #.
Get PriceRecent work has shown that randomly interstratified 2:1 clays are abundant in sedimentary rocks. Xray diffraction patterns are presented which show a wide variety of randomly interstratified clays composed of illitemontmorillonite, chloritevermiculite, illitechloritemontmorillonite, and regularly interstratified of identifying and estimating the ratio of mixed ...
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Get PriceXray diffraction analysis results suggested that Cs desorption was completed through enhanced diffusion of Mg(2+) ions into collapsed interlayer space under hydrothermal condition resulting in subsequent interlayer decollapse and readily release of Cs(+). DOI: /: ISSN: : Citation: J Hazard Mater. 2017 ...
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