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Showing 1 to 20 of 32 for “"sodium sulphate"”.
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Potassium sulphate production from an aqueous sodium sulphate waste from lead acid battery recycling
In Canada and around the globe, government and regulatory agencies have implemented regulations to regulate the industries' amount and concentration of waste disposed into the environment. The regulations are enacted and executed to protect human, animal or plant health or the environment and other …
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Cristallizzazione del solfato di sodio in calcari biomicritici: l'uso di inibitori per la mitigazione del degrado
… can be found in these sites producing decay. Sodium sulphate is very common where there is the combination between cement and pollution. This salt is very harmful for porous materials due to his high crystallization pressure and the possibility to change to anhydrous phase to hydrated one. …
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Studies of the drying of particulate slurries
… into three parts: Pure water drops, Aqueous sodium sulphate decahydrate drops, and, Slurry drops from nine detergent formulations. The value of the constant,'Ψ, reported by Ranz and Marshall, was found to be temperature dependent. In the temperature range o 26.5≤T≤118.5°C,Ψ , for pure water …
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Impurities in crystals formed by eutectic freeze crystallization
… component of many South African waste brines is sodium sulphate. This work has therefore focused on the purity of sodium sulphate obtained from two different South African brines.
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An experimental method to measure crystal growth rate in porous materials and quantity deformation developed during crystal growth
… a wide range of environmental conditions [125]. Sodium sulphate in particular is widely recognised to be the most damaging salt because of the difference in solubility between phases and the very temperature-sensitive solubility of the stable phase at room temperature. It is known to have two …
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The drying of small drops of particulate slurries
… of suspended drops of pure water and aqueous sodium sulphate decahydrate with concentrations varying from 5 to 54. 1 wt. %. Individual drops were suspended from a glass filament balance in a 26 mm I.D. vertical wind tunnel, designed and constructed to supply hot de-humidified air, to simulate …
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Chemical Modification on Gold Slides to Gain Better Control of Patterning Techniques
… were used in the investigation, including sodium sulphate, potassium sulphate, magnesium sulphate, sodium fluoride, sodium chloride, sodium bromide, and sodium iodide, potassium chloride, potassium bromide, potassium iodide, potassium dihydrogen phosphate, and potassium hydrogen …
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The Durability of Mortar with Ground Clay Brick as Partial Cement Replacement
… of ground brick mortar when exposed to sodium sulphate solution and synthetic seawater. It is seen that depending on the chemical and phase composition, the effect of ground brick can increase substantially the rate of deterioration of mortar or can reduce significantly the expansion …
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Rapid analysis of inorganic and organic anions in kraft pulping liquors by capillary zone electrophoresis
… inorganic sulphur species, including: thiosulphate, sulphate, sulphite, sulphide and polysulphide in kraft pulping liquors and effluents by capillary zone electrophoresis. In addition, several other key anions, including: hydroxide, carbonate, oxalate, formate and chloride can be quantified …
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Shallow Groundwater Quality in Alberta (Canada) with a Focus on the Occurrence of Nitrate and Methane
… aesthetic objective for total dissolved solids, sodium, sulphate, and chloride in 79%, 61%, 9.4%, and 3.2% of samples, respectively
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A new process for the separation and purification of egg yolk antibodies
… purification of IgY using precipitation with sodium sulphate. The overall recovery of the process was approximately 50%, and the purity 95% or greater depending on the number of precipitation steps used. An automated liquid chromatography system was developed to allow efficient study of …
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Rauchgasseitige Korrosion von Nickelbasislegierungen für zukünftige 700C-Dampfkraftwerke
… their hot corrosion behaviour. It is known that sodium sulphate may generate hot corrosion on those alloys at temperatures above its melting point of 884°C. On nickel base alloys an eutectic mixture of nickel sulphate and sodium sulphate with a melting point of 671°C can be generated, which leads …
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Experimental and theoretical studies on the nucleation, growth and habit modification of some inorganic carbonates, phosphates and sulphates
… kinetics and growth of some inorganic sulphates and carbonates, in view of their growing importance as enviromentally friendly high surface area powders in detergent applications. Predictions of the crystal morphology based on lattice geometry laws have been obtained and compared to the …
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Evaluation of the Potential Expansion Mechanisms of Bottom Ash in Unbound Sub-base Materials
… mix proportions of IBA and chemical additions of sodium sulphate (Na2SO4), sodium hydroxide (NaOH) and Calcium Chloride (CaCl2) were made to hasten chemical reactions. Several standard tests and new hybrid tests were performed to determine the properties of the mix proportions. Tests such as rapid …
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Chemical performance of cement stabilised contaminated clay
… of common soil components (Humic acid and sodium sulphate), and increasing hydration durations were also assessed, to inform containment effectiveness and chemical durability. Findings showed that the assessment method was suitable for chemical characterisation of stabilised matrices, as a …
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Application of natural dyes in textile industry and the treatment of dye solutions using electrolytic techniques
… resorufin (RS) from aqueous solutions containing sodium chloride. Results indicated that between 84 to 100% of each dye of phenothiazine was removed during 60 minutes of electrolysis. The percentage removals for the phenothiazine dyes followed the following decreasing order: (MG ≈ MV) > (DMMB ≈ …
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Development and characterisation of medicated wound dressings for chronic wound healing
… (CS), hydroxypropylmethylcellulose (HPMC) and sodium alginate (SA) in different weight ratios were used to prepare films by the solvent casting technique and evaluated using scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC) and Fourier …
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Dense Collagen Materials and the Modulation of Fibrillogenesis for Tissue Engineering
… as more biomimetic substrates in vitro, while sodium-sulphate-enhanced sheets integrate well in vivo, exhibiting host-cell infiltration and early neovascularisation without adverse fibrosis. Overall, this scalable absorptive-deformation method produces robust collagen tubes and adaptable sheets …
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The role of mucus in the cross talk between gut bacteria and the host
… mice showed increased susceptibility to dextran sodium sulphate (DSS)-induced colitis, alterations in mucin expression, glycosylation and goblet cell numbers, but maintained an intact mucus layer in vivo. Moreover, TCRδ-/- mice showed reduced levels of interleukin-33 mRNA, a mediator of mucosal …
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Neurochemical drivers of visceral pain: insights into the roles of interleukin-17 and the proton-sensing G protein-coupled receptor GPR68
… disease severity, as shown in an acute dextran sodium sulphate (DSS)-induced colitis model. Using GPR68 knockout mice and selective pharmacological modulators, I demonstrated that GPR68 contributes to acid-induced nociception in both in vitro and ex vivo settings. Together, my research …
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