Topic
Vermiculite
About: Vermiculite is a research topic. Over the lifetime, 2320 publications have been published within this topic receiving 37142 citations.
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TL;DR: In this paper, the removal of six widely used pharmaceuticals: ibuprofen, diclofenac, ketoprofen and carbamazepine, as well as endocrine disrupting chemicals (bisphenol A and triclosan) was examined by sorption onto eight adsorbents.
41 citations
TL;DR: In this paper, the thermal behavior of vermiculite was investigated by TG, DTA, emanation thermal analysis (ETA) and high temperature XRD on heating in the temperature range from 30 to 1100°C before and after vibratory mill grinding.
Abstract: Thermal behaviour of natural vermiculite (Santa Olalla, Huelva, Spain) was investigated by TG, DTA, emanation thermal analysis (ETA) and high temperature XRD on heating in the temperature range from 30 to 1100°C before and after vibratory mill grinding. Microstructure changes of natural and ground vermiculite samples were characterized by using ETA under in situ conditions of heating. By comparing the ETA and XRD results it was demonstrated that a decrease of radon release rate measured by ETA characterized the decrease in the interlayer spacing of the vermiculite samples that followed the dehydration.
41 citations
TL;DR: In this paper, the role of the clay minerals as catalysts in the formation of petroleum and in the beginning of life is discussed, and the structure of halloysite is particularly interesting, since the silicate layers are rolled up to form tabes.
Abstract: Kaolinite, illite, chlorite, montmorillonite, and vermiculite are among the most important of the clay minerals. Cations are embedded between the silicate layers and on the basal faces of the crystals. Whereas only the cations on the outer faces are exchangeable in the first three of the above minerals, those between the layers can also be replaced by others in montmorillonite and vermiculite. These characteristics and the ability of montmorillonite and vermiculite to undergo intracrystalline swelling and to form inclusion compounds are responsible for the industrial importance of kaolin and clay. The structure of halloysite is particularly interesting, since the silicate layers in this case are rolled up to form tabes. The possible role of the clay minerals as catalysts in the formation of petroleum and in the beginning of life is finally discussed.
41 citations
TL;DR: In this article, fine-grade kenaf was substituted for vermiculite in three volume ratios (1, 2 or 3) with sphagnum peat moss and perlite.
41 citations
TL;DR: In this article, vermiculite was treated by sulfuric or nitric acid aqueous solutions with different concentration, which had a significant influence on pore sizes and surface area.
41 citations