Microbially induced palygorskite-sepiolite authigenesis in modern hypersaline lakes (Central Spain)
نویسندگان
چکیده
منابع مشابه
Properties and Applications of Palygorskite-sepiolite Clays
The palygorskite-sepiolite group of clay minerals has a wide range of industrial applications derived mainly from its sorptive, rheological and catalytic properties which are based on the fabric, surface area, porosity, crystal morphology, structure and composition of these minerals. For assessing potential industrial uses, the mineralogical and chemical composition of the clay and its basic ph...
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a £SRF, BP 220 F-38043 Grenoble Cedex, France b Dpto, Geologia, Universidad de Salamanca, £-37008 Salamanca, Spain C Dpto. Cristalogra/ia y Mineralogia, U Complutense de Madrid, £-28040 Madrid, Spain d INFM, clo £SRF, BP 220 F-38043 Grenoble Cedex, France e Lab. Cristallographie, CN RS, Grenoble BP 166, F-38042 Grenoble Cedex 09, France f INAH, Mexico DF, Mexico g TASC-INFM Area Science Park, 1...
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-The role of adsorbed and structural Fe n+ in palygorskite and sepiolite with respect to the oxidation of hydrocortisone in aqueous suspension has been evaluated using electron spin resonance and UVvisible spectroscopy. Natural surface-adsorbed Fe 3+ showed an important activity in the oxidation process, although smaller than octahedral Fe 3+. The kinetics of oxidative degradation of hydrocorti...
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Ž In this work, a pharmaceutical preformulation study of four Spanish clays two sepiolites, one . palygorskite and one bentonite is presented, comparing the results obtained with those of three mineral products currently used in pharmaceutical technology. The results showed that the mineralogical and chemical purity of these clays is similar and even higher than that of the three commercial pro...
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Bacteria employ a diverse array of strategies to survive under extreme environmental conditions but maintaining these adaptations comes at an energetic cost. If energy reserves drop too low, extremophiles may enter a dormant state to persist. We estimated bacterial dormancy and identified the environmental variables influencing our activity proxy in 10 hypersaline and freshwater lakes across th...
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ژورنال
عنوان ژورنال: Applied Clay Science
سال: 2018
ISSN: 0169-1317
DOI: 10.1016/j.clay.2018.02.020