sulfuric acid solutions
Argemone mexicana Leaf Extract for Inhibition of Mild Steel Corrosion in Sulfuric Acid Solutions
... It was found that AMLE inhibited mild steel corrosion in sulfuric acid solutions effectively with maximum inhibition efficiency of 87% at 600 mg L -1 inhibitor concentration. Results of weight loss ...
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Energy efficiency of iron-boron-silicon metallic glasses in sulfuric acid solutions
... in sulfuric acid solutions is proposed for the first ...of sulfuric acid ...the acid concentration and time were produced by fitting the experimental data to a numerical model ...
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Precipitation of Cerium Sulfate Converted from Cerium Oxide in Sulfuric Acid Solutions and the Conversion Kinetics
... concentrated acid solutions and at elevated temperatures, although it is the most stable phase among the rare earth oxides so there are many dif fi culties associated with dissolving it in acidic ...using ...
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Passivation Behavior of a Zr60Cu20Ni8Al7Hf3Ti2 Bulk Metallic Glass in Sulfuric Acid Solutions
... It is recognized that the passive films of alloys consist of one or several oxides and their thickness range is from several nanometers to tens of nanometers, possessing typical semiconductor properties. Consequently, in ...
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Comparative leaching of spent zinc-manganese-carbon batteries using sulfur dioxide in ammoniacal and sulfuric acid solutions
... dissolved in acid, Mn(III/IV) oxides can only be partially dissolved in acid due to their low solubility in the absence of reducing agents (Ferella et al., 2008; El Nadi et al. 2007; Sayilgan et al., 2009b; ...
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Chronoamperometric Cu(II) Analysis at Gold Ultramicroelectrodes in Concentrated Sulfuric Acid Solutions
... from sulfuric acid in a wide concentration range and from additives such as thiourea and glue showed that they do not affect the linearity between the stationary current values and Cu(II) ...
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Development of Metal Recovery Process from Alkaline Manganese Batteries in Sulfuric Acid Solutions
... A process for the recovery of Mn from a waste of spent alkaline batteries using sulfuric acid and hydrogen peroxide has been investigated. The proposed procedure consisted of mechanical separation of ...
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Titanium Dissolution from Indonesian Ilmenite
... the sulfuric acid concentration were increased from 50 % to ...aqueous sulfuric acid solution when the decomposed ilmenite were dissolve into 75 % sulfuric acid solutions ...
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I. The Ionization of Amino Acids and Other Polyfunctional Organic Compounds in the Solvent Sulfuric Acid. II. Studies on the Chemistry of Azlactones. III. Miscellaneous Observations on Amino Acid Derivatives. IV. The Nodal Silver Stain: its Mechanism and Relation to the Potassium Loss of Isolated Nerve
... The results of our cryoscopic measurements on sulfuric acid solutions of potassium sulfate, barium sulfate and benzoic acid are summarized in Table II... How-.[r] ...
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Leaching of Zinc Oxide in Acidic Solution
... hydrochloric acid and sulfuric acid solutions are controlled by the mass trans- portations the leaching rates should depend upon the rotating speed of the zinc oxide ...
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Recovery of Calcium Carbonate and Calcium Sulfate from Waste Gypsum
... Abstract— This study was carried out to recover calcium sulfate and calcium carbonate from the waste desulfurization gypsum which is buried as industrial general wastes. The availability of waste sulfuric ...
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ACID AND ALKALINE HYDROLYSIS TECHNOLOGIES FOR BIOETHANOL PRODUCTION: AN OVERVIEW
... The sulfuric acid-based hydrolysis process is operated under two different conditions; (í) a process that uses high sulfuric acid concentration that operates at a lower temperature and, (íí) a ...
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Corrosion inhibition of mild steel by ceftriaxone in 1m sulfuric acid medium
... of sulfuric acid during d pickling, acid descaling and industrial cleaning ...from acid corrosion, other factors like- temperature variation, tidal action of seawater, man-made pollutants, ...
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Air pollution.ppt
... Acid deposition of sulfuric acid droplets – damage to. Acid deposition of sulfuric acid droplets – damage to[r] ...
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Isoprenoids Production from Lipid-Extracted Microalgal Biomass Residues Using the Engineered E. coli
... The compositions of LMBRs were determined with previous methods. Cellulose and hemicellulose were analyzed according to the method of NREL Laboratory Analytical Procedure (LAP) [15]. This method is used to detect the ...
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Determination of Tea Saponin in Camellia Seed Oil with UV and HPLC Analysis
... The standard tea saponin solution (0.95 mg/ml) was prepared in the following steps: 0.1 g standard tea sapo- nin powder (containing 95% tea saponin) was weighted precisely put into a 100 ml volumetric flask. The sapo- ...
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Sulfuric acid bleaching of kraft pulp II: Behavior of lignin and carbohydrate during sulfuric acid bleaching
... Two lignin samples were prepared from the effluents gained after both beech kraft pulp bleaching and red pine kraft pulp bleaching: One is acid lignin, which was pr[r] ...
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I Direct titration of sulfate II High precision spectrophotometric analysis
... An experiment with pure methanol solutions of barium chloride as titrant and of sulfuric acid as sample gave an end point change in the vicinity of a ratio of one barium ion to two sulfa[r] ...
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Study on Anodic Oxidation and Sealing of Aluminum Alloy
... surface roughness data shows that the sample’s surface became smoother after anodic oxidation. The anodic oxidation film became denser and more compact in the sulfuric acid solution, and the amounts of the ...
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Fast and sensitive determination of sulfur dioxide in herbal medicines by microchip-based field asymmetric-wave ion mobility spectrometry
... An alkaline extraction solution, a 5% of sulfuric acid solution, a standard reaction solution (5% of sulfuric acid reacted with sodium sulfite solution) and a sample reaction solution ([r] ...
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