Showing 141 - 160 results of 169 for search '"sulphur"', query time: 0.04s Refine Results
  1. 141

    Study on the Corrosion Kinetics of Iron in Acid and Base Medium by D. B. Patil, A. R. Sharma

    Published 2011-01-01
    “…The corrosion kinetics was studied in sulphuric acid, nitric acid and potassium hydroxide by weight loss method at different time intervals at 25.0 °C to 40.0 °C. …”
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  2. 142

    Modification of Activated Carbon for the Adsorption of Humic Acid by H.M.B. Eustáquio, Christian W. Lopes, Rafael S. da Rocha, Brena D. Cardoso, Sibele B.C. Pergher

    Published 2015-02-01
    “…Commercial activated carbon treated with sulphuric and phosphoric acids was used to remove humic acids (HAs) from water. …”
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  3. 143

    Evaluation of a Local Clay as a Dehydration Catalyst by Susan A. Ali, Maha K. El-Aiashy, Zita S. Ayad

    Published 1996-12-01
    “…The optimum conditions for activation were obtained on treating Helwan raw clay with 20% sulphuric acid solution at 104°C at an acid solution/clay ratio of 1.5:1 by weight, followed by calcination at 500°C. …”
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  4. 144

    Corrosive Activity of Combustion Products of Aqueous and Fuel Oil Emulsions in Boiler Plants by I. I. Strikha

    Published 2003-08-01
    “…Data pertaining to determination of flows of sulphuric acid vapour condensation in chimneys at various regimes of their operation are given in the paper.…”
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  5. 145

    Extraction of Water Treatment Coagulant from Locally Abundant Kaolin Clays by Fidelis Chigondo, Benias Chomunorwa Nyamunda, Vuyo Bhebhe

    Published 2015-01-01
    “…The results showed that sulphuric acid could be used on a large scale to extract alum from kaolin clay. …”
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    Article
  6. 146

    CHEMICAL REAGENTS FOR SELECTIVITY IN IMPROVEMENT OF RHEOLOGICAL PROPERTIES OF CRUDE OIL by VALI HANAQA NURULLAYEV, BEYBALA TACI USUBALIYEV, FIKRET SULEYMAN GEHREMANOV, ULKER FIKRET GEHREMANOVA

    Published 2019-03-01
    “…Now the increasing number of high-sulphurous and high-paraffinic oil fields is brought into development. …”
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    Article
  7. 147

    Inhibition of Mild Steel Corrosion in Acidic Medium by Aqueous Extract of Tridax procumbens L. by G. Ilayaraja, A. R. Sasieekhumar, P. Dhanakodi

    Published 2011-01-01
    “…Also, it was found that the corrosion inhibition behavior of Tridax procumbens L. is greater in sulphuric acid than hydrochloric acid medium. So Tridax procumbens L. can be used as a good inhibitor for preventing mild steel material.…”
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  8. 148

    Synthesis and Biological Evaluation of Substituted Thiophenyl Derivatives of Indane-1, 3-Dione by D. Giles, M. S. Prakash, K. V. Ramseshu

    Published 2007-01-01
    “…Indane-1, 3-dione (1) synthesized by condensation of diethyl phthalate and ethyl acetate in presence of sodium ethoxide gave sodium salt of ester derivative, which on neutralization in presence of sulphuric acid afford 1. Various thiols where converted to their respective disulphide (3) which on treatment with 1 gave 2-substituted thio phenyl derivatives (4a-g) of 1. …”
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  9. 149

    Corrosion Behaviour of Mild Steel in Acidic Medium in Presence of Aqueous Extract of Allamanda Blanchetii by B. Anand, V. Balasubramanian

    Published 2011-01-01
    “…Also, it was found that the corrosion inhibition behavior of Allamanda blanchetii is greater in sulphuric acid than citric acid medium. So Allamanda blanchetti can be used as a good inhibitor for preventing mild steel material. …”
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  10. 150

    Copper recovery in a bench-scale carrier facilitated tubular supported liquid membrane system by Makaka S., Aziz M., Nesbitt A.

    Published 2010-01-01
    “…Dilute Copper solution passed through the centre pipe and sulphuric acid as strippant passed through the shell side. …”
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  11. 151

    On the Use of Potential Denaturing Agents for Ethanol in Direct Ethanol Fuel Cells by Domnik Bayer, Florina Jung, Birgit Kintzel, Martin Joos, Carsten Cremers, Dierk Martin, Jörg Bernard, Jens Tübke

    Published 2011-01-01
    “…Experiments were carried out both in sulphuric acid and potassium hydroxide solution. Beside, basic electrochemical tests, differential electrochemical mass spectrometry (DEMS) and fuel cell tests were conducted. …”
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  12. 152

    An Electrochemical Impedance Spectroscopic Study of the Passive State on AISI 304 Stainless Steel by A. Fattah-alhosseini, S. Taheri Shoja, B. Heydari Zebardast, P. Mohamadian Samim

    Published 2011-01-01
    “…In this study, the electrochemical behavior of passive films anodically formed on AISI 304 stainless steel in sulfuric acid solution has been examined using electrochemical impedance spectroscopy. AISI 304 in sulphuric acid solution is characterized by high interfacial impedance, thereby illustrating its high corrosion resistance. …”
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  13. 153

    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

    Published 1999-04-01
    “…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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  14. 154

    A Simple Spectrophotometric Method for Determination of Glyoxylic Acid in Its Synthesis Mixture by Mazhar Abdulwahed, Lamia Mamoly, Wael Bosnali

    Published 2020-01-01
    “…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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  15. 155

    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

    Published 2011-01-01
    “…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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  16. 156

    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

    Published 2015-01-01
    “…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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  17. 157

    Partial Purification and Characterization of Rhodanese from Rainbow Trout (Oncorhynchus mykiss) Liver by Hossein Tayefi-Nasrabadi, Reza Rahmani

    Published 2012-01-01
    “…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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  18. 158

    Spectrophotometric Determination of Reboxetine through Condensation and Diazo-Coupling Reactions by K. Srikanth, K. A. Emmanuel

    Published 2011-01-01
    “…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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  19. 159

    Examination of the Effectiveness of Physical and Chemical Activation of Natural Bentonite for the Removal of Heavy Metal Ions from Aqueous Solutions by Fawzi Banat, Sameer Al-Asheh, Leena Abu-Aitah

    Published 2002-03-01
    “…The uptake of Cu 2+ and Ni 2+ ions decreased significantly with an increase in the NaCl and KCl concentrations present in the aqueous solution. Sulphuric acid of 0.1 M concentration was found to be an effective desorbent for bentonite laden with heavy metals.…”
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  20. 160

    Copper solvent extraction from chalcopyrite concentrate acid leach solutions by LIX 984 by Elamari K., Jdid E.A., Blazy P.

    Published 2006-01-01
    “…Stripping of the loaded copper by treating the organic phases was easily obtained by a sulphuric acid solution.…”
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