Synthesis and Characterization of Ti—MCM-41-Type Mesoporous Molecular Sieves with High Titanium Contents by A.S. Kovalenko, A.S. Korchev, J.V. Chernenko, V.G. Il'in, A.P. Filippov

“…It has been shown that most of the titanium can be expelled from the structure when the materials are treated with sulphuric acid solution. However, such treatment does not destroy their inherent hexagonal structure, thereby suggesting that the titanium is preferentially localized in the mesopore surface layer. …”
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A Simple Spectrophotometric Method for Determination of Glyoxylic Acid in Its Synthesis Mixture by Mazhar Abdulwahed, Lamia Mamoly, Wael Bosnali

“…A new simple and reliable spectrophotometric method is described to determine glyoxylic acid in its synthesis reaction mixture containing oxalic acid, glycolic acid, acetic acid, glyoxal, and ethylene glycol by means of a modified Hopkins–Cole reaction between glyoxylic acid and tryptophan in presence of ferric chloride and concentrated sulphuric acid. The linear range of glyoxylic acid concentration is 0–0.028 M. …”
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Biosorption Studies for the Removal of Malachite Green from its Aqueous Solution by Activated Carbon Prepared from Cassava Peel by C. Parvathi, T. Maruthavanan, S. Sivamani, C. Prakash

“…Silver nitrate treated cassava peel showed a better performance compared to Sulphuric acid treated and raw carbons, thus making it an interesting option for dye removal textile effluent.…”
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Effect of the Electrolyte Temperature and the Current Density on a Layer Microhardness Generated by the Anodic Aluminium Oxidation by Emil Spišák, Miroslav Gombár, Ján Kmec, Alena Vagaská, Erika Fechová, Peter Michal, Ján Piteľ, Daniel Kučerka

“…The layers were generated in the electrolytes with different concentrations of sulphuric and oxalic acids and surface current densities 1 A·dm−2, 3 A·dm−2, and 5 A·dm−2. …”
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Partial Purification and Characterization of Rhodanese from Rainbow Trout (Oncorhynchus mykiss) Liver by Hossein Tayefi-Nasrabadi, Reza Rahmani

“…Rhodanese, a ubiquitous enzyme, can catalyse the detoxification of cyanide by sulphuration reaction. In this study, rhodanese was partially purified and characterized from the liver tissue homogenate of the rainbow trout. …”
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Spectrophotometric Determination of Reboxetine through Condensation and Diazo-Coupling Reactions by K. Srikanth, K. A. Emmanuel

“…Out of the two methods developed in the laboratory, the first method involves the condensation reaction of hydrolysed reboxetine methane sulphonate with ethyl acetoacetate in sulphuric acid medium and the second method involves the diazocoupling reaction of hydrolysed reboxetine methane sulphonate with diazotized p-sulphanilic acid in alkaline medium. …”
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Copper solvent extraction from chalcopyrite concentrate acid leach solutions by LIX 984 by Elamari K., Jdid E.A., Blazy P.

“…Stripping of the loaded copper by treating the organic phases was easily obtained by a sulphuric acid solution.…”
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Durability Studies on Fly Ash Based Geopolymer Concrete Incorporated with Slag and Alkali Solutions by S. Nagajothi, S. Elavenil, S. Angalaeswari, L. Natrayan, Wubishet Degife Mammo

“…In this study, the durability of G30 grade geopolymer concrete has been investigated using tests acid resistance, water absorption, sulphate resistance, Rapid Chloride Penetration Test (RCPT), and rate of absorption (Sorptivity) test. The sulphuric acid, sodium sulphate, and water absorption tests were carried out at 28 days, 56 days, and 90 days for both the geopolymer and the conventional concrete. …”
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Production of Biodiesel from High Acid Value Waste Cooking Oil Using an Optimized Lipase Enzyme/Acid-Catalyzed Hybrid Process by N. Saifuddin, A. Z. Raziah, H. Nor Farah

“…By using a feedstock to methanol molar ratio of 1:15 and a sulphuric acid concentration of 2.5%, a biodiesel conversion of 88% was obtained at 50 °C for an hour reaction time. …”
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Evaluation of sorption properties of biochar produced by hydrothermal liquefaction of Phragmites australis by Natalia A. Muravieva, Yuliya V. Kulikova, Olga O. Babich

“…The maximum sorption capacity for methylene blue of 18.4 mg/g was achieved due to chemisorption for the sample after carbon activation with peroxide in the presence of sulphuric acid. The maximum BET surface area (18.47 m2/g) and total pore volume (0.186 cm3/g) were achieved for the sample after gas-vapor activation. …”
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Degradation of Anthraquinone Dye Reactive Blue 4 in Pyrite Ash Catalyzed Fenton Reaction by Milena Becelic-Tomin, Bozo Dalmacija, Ljiljana Rajic, Dragana Tomasevic, Djurdja Kerkez, Malcolm Watson, Miljana Prica

“…Pyrite ash (PA) is created by burning pyrite in the chemical production of sulphuric acid. The high concentration of iron oxide, mostly hematite, present in pyrite ash, gives the basis for its application as a source of catalytic iron in a modified Fenton process for anthraquinone dye reactive blue 4 (RB4) degradation. …”
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Effect of strain energy on corrosion behavior of ultrafine grained copper prepared by severe plastic deformation by Rifai M., Mujamilah M., Bagherpour E., Miyamoto H.

“…The corrosion behavior by potentiodynamic polarization curve was observed in modified Livingstone solution, 1 M NaCl, and sulphuric solution. The structure of SSE processed sample showed that the first pass of the SSE processed sample displayed large deformation by developing the elongated grain and sub-grain structure. …”
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The Reaction Extraction Combining Crystallization for Growth of Sodium Chloride in a Spray Fluidized Bed Crystallizer by Dan Zheng, Jie Yan, Jun Chen, Zeqin Wang

“…This work presents a novel approach for the growth of sodium chloride from supersaturated solutions by reaction-extractive crystallization in a spray fluidized bed crystallizer (SFBC), in which sodium sulfate solution is transformed into potassium chloride and sulphuric acid based on a reactive extraction-crystallization process using triisooctylamine (TOL) in n-octanol as the extraction system. …”
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