Lithofacies belonging to mud-flat and palustrine deposits (lake margin) in the Miocene of Madrid Basin (Spain) have been studied. Four lithofacies corresponding mud flat (1 3) (2 4) differentiated. Units 1 3 consist mainly mudstones carbonates (calcretes diolocretes). The clay fraction is dominated by trioctahedral smectite (up 79%) with illite kaolinite as minor components. d(060) spacing valu...

This study was focused on how to improve the gas sensing properties of resistive gas sensors based on zinc oxide to dimethyl sulfide (DMS). The aim of this research was to investigate possible ways of improvement detection of dimethyl sulfide, such as volume doping with synthesized gold nanoparticles or applying sepiolite passive filter. The addition of noble metal into the gas sensing layer is...

introduction industrialization and urbanization of societies have caused many environmental problems. therefore, environmental protection has recently become highly important. water resources are particularly of high risk of pollution from industrial waste disposal to river, surface, and ground water, and also from discharge of water to municipal waste water collection systems. these effluents ...

This work addresses the rehabilitation of water contaminated with atrazine, entrapping it in a permeable and sustainable barrier designed waste materials (sepiolite) biomaterials (cork pine bark). Atrazine adsorption was assessed by kinetics equilibrium assays desorption tested different extraction solvents. Adsorbed atrazine 100% recovered from sepiolite using 20% acetonitrile solution, while ...

Abstract The development of nanocellulose-clay materials resulted great relevance, as it opened up the applications nanocellulose, but still requires new approaches that could contribute to improve preparation procedures and features this type biohybrid materials. In context, nanocellulose-sepiolite (NC-S) biocomposite foams films have already been successfully tested for some applications. How...

Abstract Aim of study was to verify the effect temperature on pozzolanic reactivity thermally activated attapulgite and sepiolite samples. Activation temperatures were selected: 650, 700 750 °C for 800, 825 850 sepiolite. Content reactive SiO 2 Al O 3 after thermal treatment amount Ca(OH) consumed in reaction measured. It should be noted that a higher activation improves The upper limit increas...

Abstract Steam reforming of toluene (SRT) has been studied initially in eight nickel-based catalysts where nickel (10 wt%) was incorporated different supports (olivine, Al2O3, MgO, LDH, ZrO2, CeO2 and natural sepiolite) by the incipient wetness impregnation method. Among them, catalyst based on sepiolite exhibited a promising catalytic performance, with high conversion (16%), selectivity to hyd...