Applied Sciences, 2020 In this work, various physicochemical characteristics, e.g., surface properties and mineralogical compositions, of five clays collected from different sites in the Al-Hasa oasis in Saudi Arabia have been investigated.
Ibrahim A. Al-Hawas +2 more
doaj +1 more source
Petroduric and 'petrosepiolitic' horizons in soils of Namaqualand, South Africa Horizontes petrodúricos y "petrosepiolíticos" en suelos de Namaqualand, Suráfrica Horizontes petrodúricos e petrosepiolíticos em solos de Namaqualand, África do Sul [PDF]
Spanish Journal of Soil Science, 2012 <p>Indurated, light-coloured 'sepiocrete' horizons have been found in Namaqualand Calcisols and Durisols. These horizons resembled calcrete but were non- to only mildly calcareous, resisted slaking in acid and alkali, and often broke with
Michele Louise Francis +3 more
doaj +1 more source
Adsorption of Methyl Orange on a Novel Palygorskite/UiO-66 Nanocomposite
Applied Sciences, 2022 Herein, a novel composite material containing UiO-66 and palygorskite (Pal) clay mineral was prepared using a facile one-pot synthesis process. The material was studied using a variety of techniques and applied as did not affect the structure of the ...
Ioanna A. Vasiliadou +5 more
doaj +1 more source
Nanocrystalline TiO2 and halloysite clay mineral composite films prepared by sol-gel method:Synergistic effect and the case of silver modification to the photocatalytic degradation of basic blue- 41 azo dye in water [PDF]
, 2014 Tubular halloysite clay mineral and nanocrystalline TiO2 were incorporated in the preparation of nanocomposite films on glass substrates via sol-gel method at 450 °C.
Kaplani, E. +4 more
core
Monitoring the impact of desert dust outbreaks for air quality for health studies [PDF]
, 2019 We review the major features of desert dust outbreaks that are relevant to the assessment of dust impacts upon human health. Our ultimate goal is to provide scientific guidance for the acquisition of relevant population exposure information for ...
Alastuey, A. +11 more
core +2 more sources
Journal of Chemistry, Volume 2026, Issue 1, 2026.Heavy metal contamination, particularly from chromium, poses significant health risks and environmental challenges due to its prevalence in industrial effluents. This study investigates the effectiveness of activated bentonite clay sourced from Saudi Arabian deposits for the removal of hexavalent chromium (Cr(VI)) in aqueous environments.
Saad Al-Shahrani +2 more
wiley +1 more source
Prismatic to asbestiform offretite from Northern Italy. Occurrence, morphology and crystal-chemistry of a new potentially hazardous zeolite [PDF]
, 2018 A multi-methodological approach, based upon field investigation, morphological characterization, chemical analysis and structure refinement was applied to different samples of fibrous offretite, a new potentially hazardous zeolite recently discovered in ...
Arcangeli, Pierluca +6 more
core +3 more sources
Palygorskite from Padasjoki, southern Finland
Bulletin of the Geological Society of Finland, 1981 Monoclinic palygorskite with the unit cell a0 = 12.689 Å, b0 = 17.845 Å, c0 = 5.119 Å and ß = 91.22° has been found at Padasjoki, southern Finland. The mineral is thought to be of hydrothermal origin. Monoclinic symmetry is connected with an ordered Mg-Al substitution, although owing to the low Δd121‒121 value observed a low degree of ordering is ...
K. Lindqvist, I. Laitakari
openaire +2 more sources
Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.Abstract This study investigated the mechanical, microstructural, and thermal properties of Na‐based geopolymer foams (GPFs) reinforced with varying amounts of two types of reinforcements: raw phosphate mine waste rock (PMWR) as a particulate filler, and natural (hemp) or synthetic (basalt) fibers.
Sanae Sbi +6 more
wiley +1 more source
The geochemistry of gem opals as evidence of their origin [PDF]
, 2008 International audienceSeventy-seven gem opals from ten countries were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) through a dilution process, in order to establish the nature of the impurities. The results are correlated to the mode
Bouhnik-Le Coz, Martine +6 more
core +6 more sources