scholarly journals III. On the oxidation of glycol, and on some salts of glyoxylic acid

1859 ◽  
Vol 9 ◽  
pp. 711-716
Keyword(s):  
Nitric Acid ◽  
Glycolic Acid ◽  
Glyoxylic Acid ◽  
Oxalic Acids

If glycol be oxidized with nitric acid, according to Wurtz, it is converted into glycolic and oxalic acids. Glycol. C 2 H 6 O 2 + O 2 = C 2 H 4 O 3 + Glycolic acid H 2 O Water. Glycol. C 2 H 6 O 2 + O 4 = C 2 H 2 O 4 + Glycolic acid 2H 2 O Water.

Glyoxylic Acid Separation from Products of Glyoxal Oxidation in the Form of its Calcium Salt

2015 ◽  
Vol 1085 ◽  
pp. 74-78 ◽  
Author(s):  
Maxim A. Pozdniakov ◽  
Konstantin V. Rubtsov ◽  
Lyudmila A. Rasskazova ◽  
Anatoly Filimoshkin
Keyword(s):  
Infrared Spectroscopy ◽  
Nitric Acid ◽  
Aqueous Solutions ◽  
Calcium Salt ◽  
Glyoxylic Acid ◽  
Oxidation Products ◽  
Complex Mixtures ◽  
Research Strategies ◽  
Calcium Salts ◽  
Oxalic Acids

Synthesis of glyoxylic acid was carried out by oxidation of glyoxal aqueous solutions by nitric acid. Glyoxylic acid and oxalic acid (as a by-product) were isolated from technological mixtures in the form of their calcium salts in a strictly defined region of pH. Previously, model calcium salts were synthesized from the commercial acids as reference objects.The results of infrared spectroscopy and complexometric titration of precipitates of calcium salts of glyoxylic and oxalic acids, isolated in various pH regions, allow one to construct reliable research strategies of complex mixtures, such as obtained from the oxidation products of aqueous solutions of glyoxal.

scholarly journals Oxidation of Glyoxylic Acid to Oxalic Acid by Glycolic Acid Oxidase

1961 ◽  
Vol 236 (5) ◽  
pp. 1280-1284
Author(s):  
K.E. Richardson ◽  
N.E. Tolbert
Keyword(s):  
Oxalic Acid ◽  
Glycolic Acid ◽  
Glyoxylic Acid ◽  
Acid Oxidase

Effects of organic and inorganic acids on phosphorus release from municipal sludge

2007 ◽  
Vol 56 (9) ◽  
pp. 87-94 ◽  
Author(s):  
N.B. Pakdil ◽  
A. Filibeli
Keyword(s):  
Nitric Acid ◽  
Organic Acids ◽  
Chemical Constituents ◽  
Ammonium Phosphate ◽  
Phosphorus Release ◽  
Major Elements ◽  
Phosphorus Recovery ◽  
Magnesium Ammonium Phosphate ◽  
Inorganic Acids ◽  
Oxalic Acids

This paper reports on the effects of inorganic acids (sulphuric acid, hydrochloric acid, nitric acid) and organic acids (citric acid, oxalic acids) for phosphorus recovery from sludge and struvite precipitation results. It was observed that both inorganic acid and organic acids were effective at phosphorus release. The studies on precipitation of released phosphorus from sludge as magnesium ammonium phosphate (struvite) were also done using nitric and oxalic acids. Phosphorus and heavy metals of leachate were analyzed before and after precipitation. It was observed that heavy metal concentrations in the extracted samples decrease after precipitation. Precipitation was accomplished by using extract derived with nitric acid; however, in oxalic acid applications, it was not achieved. When the chemical constituents of the dried material were examined oxygen, sodium and nitrogen were found to be the major elements.

scholarly journals Degradation of 1,4-Dioxane and Cyclic Ethers by an Isolated Fungus

2005 ◽  
Vol 71 (3) ◽  
pp. 1254-1258 ◽  
Author(s):  
Kunichika Nakamiya ◽  
Syunji Hashimoto ◽  
Hiroyasu Ito ◽  
John S. Edmonds ◽  
Masatoshi Morita
Keyword(s):  
Oxalic Acid ◽  
Ethylene Glycol ◽  
Glycolic Acid ◽  
Tricarboxylic Acid Cycle ◽  
Glyoxylic Acid ◽  
Sole Source ◽  
Cordyceps Sinensis ◽  
Mass Spectrometry Analysis ◽  
Cyclic Ethers ◽  
Rrna Gene

ABSTRACT By using 1,4-dioxane as the sole source of carbon, a 1,4-dioxane-degrading microorganism was isolated from soil. The fungus, termed strain A, was able to utilize 1,4-dioxane and many kinds of cyclic ethers as the sole source of carbon and was identified as Cordyceps sinensis from its 18S rRNA gene sequence. Ethylene glycol was identified as a degradation product of 1,4-dioxane by the use of deuterated 1,4-dioxane-d 8 and gas chromatography-mass spectrometry analysis. A degradation pathway involving ethylene glycol, glycolic acid, and oxalic acid was proposed, followed by incorporation of the glycolic acid and/or oxalic acid via glyoxylic acid into the tricarboxylic acid cycle.

scholarly journals XII. On the action of ammonia on glyoxal

1858 ◽  
Vol 148 ◽  
pp. 205-209 ◽  
Keyword(s):  
Nitric Acid ◽  
Royal Society ◽  
Glyoxylic Acid ◽  
Other Substances

If alcohol be slowly oxidized at ordinary temperatures by nitric acid, besides other substances, glyoxal, C 2 H 2 O 2 , and glyoxylic acid, C 2 H 4 O 4 *, are produced. I have continued the investigation of these substances, and beg to lay before the Royal Society some of the more interesting results.

scholarly journals A Simple Spectrophotometric Method for Determination of Glyoxylic Acid in Its Synthesis Mixture

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Mazhar Abdulwahed ◽  
Lamia Mamoly ◽  
Wael Bosnali
Keyword(s):  
Standard Deviation ◽  
Spectrophotometric Method ◽  
Glycolic Acid ◽  
Glyoxylic Acid ◽  
Reference Method ◽  
Recovery Ratio ◽  
Molar Ratios ◽  
Relative Standard ◽  
Reaction Stoichiometry

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. The limits of detection (LOD) and quantitation (LOQ) are 0.0019 M and 0.00577 M, respectively. The LOD, LOQ, standard deviation, relative standard deviation, and recovery ratio of the proposed method are comparable with a selected HPLC reference method. Both methods displayed same precision and credibility. Reaction stoichiometry between tryptophan and glyoxylic acid is assumed to be 2 : 3. Reaction mechanism has been postulated based on identified molar ratios of reactants. Glyoxal gave a negative test with tryptophan although it is a dialdehyde.

IX. Researches on the action of ammonia on glyoxal

1859 ◽  
Vol 9 ◽  
pp. 297-299
Keyword(s):  
Nitric Acid ◽  
Royal Society ◽  
Glyoxylic Acid ◽  
Other Substances

If alcohol be slowly oxidized by nitric acid at ordinary temperatures, besides other substances, glyoxal, C 2 H 2 O 2 , and glyoxylic acid, C 2 H 4 O 4 , are formed. I have continued the investigation of these substances, and beg to lay before the Royal Society some of the more interesting results.

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