Tobermorite minerals are important in many industrial processes typically occurring in hydrous environment. Their functionality is therefore governed in various aspects by their morphology and surface stability/reactivity. Here, we present the results of the surface energies and morphology of no...

Tobermorite has attracted extensive attention as the main hydrothermal product of autoclaved aerated concrete. The optimum hydrothermal synthesis conditions, micro-nanostructure and properties of the solid wastes-based tobermorite were analyzed using XRD, SEM, XRF, TG-DSC, FT-IR, MAS-NMR and nan...

Pastes of calcium silicate binders with low CaO/SiO2 (C/S) ratio with an overall C/S molar ratio of 1.1 were produced by mixing these materials with water or with an aqueous solution of Na2SiO3. Both types of pastes (non-activated and Na2SiO3 activated) were analysed using X-ray diffraction (XRD...

CoMn-K was mechanically mixed with a Pd/Ba/Al2O3 catalyst to enhance its NOx storage and reduction properties. The Pd/Ba/Al2O3 and CoMn-K mixture showed a synergetic effect with respect to NOx storage capacity and improved NOx reduction ability. The addition of K+ ions promoted the catalytic per...

Schwertmannite is a metastable Fe(III)-bearing mineral that can rapidly transform to more stable Fe(III) oxides upon Fe(II) sorption, via a dissolution-reprecipitation pathway. Phosphate (PO43−) is a nutrient found in varying quantities in natural systems, but the influence of PO43− on the Fe(II...

The kinetics of the reaction of CuII(GGG), CuII(GGGGG) and CuII(GGGGS), where G = glycine and S = sarcosine, with 4-nitrophenyl-acetate were measured. The results point out that at pH 9.0 hydroxide is an axial, or equatorial ligand to a significant amount of these complexes. The source of the di...

Hydrocalumite (CaAl-LDH) was prepared by the co-precipitation method with different Ca2+/Al3+ molar ratios. Hydrocalumite at the molar ratio of 4:1 Ca2+/Al3+ (4HC) showed to be efficient in the removal of Cu2+, Ni2+ or Zn2+ from the aqueous solution. The products formed between 4HC and the Cu2+,...

ABSTRACTGreen and sustainable strategies aim for the development of manufacturing processes that maximize the use of resources instigating semiconductor industry to adopt zero-liquid discharge policies. Complexity and variations of semiconductor wastewater effluents opens an opportunity for reso...

A tetra-amine copper(II) chitosan bead system ([email protected] composite beads) was developed by grafting tetra-amine copper(II) (TAC) with chitosan (CS) and utilized for phosphate removal. The prepared [email protected] composite beads possess enhanced phosphate sorption capacity (SC) of 41.4...

Quantitative mineral analysis (QMA) performed using energy-dispersive x-ray spectrometry and scanning electron microscopes (EDS-SEM) provide reliable information on the mineral abundance and texture of prepared rocks. This information helps in the optimization of the mining and milling processes...

The Gercus Basalt is a recently discovered body within the Gercus Formation, which is exposed on both limbs of the large, double-plunging, NW/SE-trending Bekhair Anticline to the north of Duhok city, northern Iraq. The basalt is mostly basanitic and alkaline in nature, greenish to grayish black ...

To keep the stability and integrity of wellbore, it is required to figure out the interaction between clays, water and rock strength in the drilling process. As revealed in available literatures, a high content of clays usually leads to a low value of rock strength and can easily result in the d...

The Jiguanzui Cu–Au deposit is an important skarn deposit in the Edong ore district of the Middle–Lower Yangtze River Valley metallogenic belt (MLYRB, Eastern China). The mineralization occurred dominantly in the Lower-Middle Triassic Jialingjiang Formation marble, either along interlayer frac...

The Igarapé Bahia IOCG Cu–Au deposit, located in the Carajás Domain, the northern part of the Carajás Province in the Amazon Craton, is one of the most economically important deposits in the province. The deposit is hosted in the metavolcanosedimentary Igarapé Bahia Group and the metasedime...

The Singhbhum Shear Zone (SSZ) in eastern India is one of the major uranium repositories of the country. Some of the important uranium deposits viz., Bagjata, Jaduguda, Bhatin, Narwapahar, and Banadungri-Singridungri are juxtaposed in the central part of SSZ. The uranium mineralization in centra...

The Baiyanghe Be-U deposit is located in the Xuemisitan volcanic belt of the northwest margin of the Junggar plate, NW China. It is the largest beryllium deposit in Asia, but the physicochemical conditions of ore precipitation and mechanisms of transportation and precipitation of Be and U are st...

Complex assemblages consisting of native iron + pentlandite, pentlandite + heazlewoodite + magnetite, heazlewoodite + magnetite + platinum-group minerals (PGM), and millerite ± heazlewoodite are associated with three types of altered chromites (partly altered chromite, double-rimmed chromite, a...

We report density functional calculations of the structures and properties of anhydrite (CaSO4), polyhalite (K2SO4·MgSO4·2CaSO4·2H2O) and carnallite (KCl·MgCl2·6H2O). Densities of states are systematically investigated and phonon analysis using density functional perturbation theory is perf...

The relationship between sylvinite (KCl + NaCl) and carnallite (KCl·MgCl2·6H2O) is important in potash mines containing carnallite, and especially where sylvinite overlies carnallite. It is generally believed that this reversal of the normal depositional sequence may be caused by dissolution o...

Carnallite is a double salt (KCl·MgCl2·6H2O or KMgCl3·6H2O), which is a common source of potassium chloride (KCl). It is treated with a mother liquor containing magnesium chloride (MgCl2), KCl and sodium chloride (NaCl), and then KCl and NaCl precipitate in the mother liquor solution. The amo...