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Showing 1 to 20 of 64 for “"Oxalic acid"”.
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Remediation of spent oxalic acid nuclear decontamination solutions using ozone
… chemically cleaning (i.e. decontamination) with oxalic acid is used to aid in the removal of residual quantities. Although oxalic acid works for cleaning the tanks, its downstream impacts are considered detrimental. To better understand and quantify the impacts, detailed models were developed to …
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Contributions to the history of the compounds of oxalic acid
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemistry, 1869
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Pokeweed: mineral and oxalic acid content with a comparison to spinach
… calcium, magnesium, phosphorus, iron, zinc, and oxalic acid. Since pokeweed and spinach are considered to be of similar eating quality, a comparison was made to like nutrient values of spinach. Pokeweed leaves produced the highest amount of phosphorus, zinc, and iron and the least amount of …
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Fabrication of TiO2 Films by Anodisation of Ti-Foils in Oxalic Acid
… voltages from 100 to 200 V (at 10 min for 0.2 M oxalic acid and current density 60 mA / cm^2). Data from Raman showed that anatase was present in all films and its intensity increased with increasing voltage. FESEM images showed that, at anodisation voltages of 10-20 V, a flat layer was formed, …
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Equilibrium Study of the Three Component System Oxalic Acid — Sodium Oxalate — Water at 25°
The experimental measurement of chemical equilibria frequently presents problems of considerable difficulty. In some cases the position of equilibrium may be such that the reaction goes nearly to completion in one direction, resulting in an extremely small concentration of one or more of the …
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Course and extent of alteration of selected ferromagnesian silicates by aqueous solutions of oxalic acid
Thesis (M.S.)--Michigan State University. Dept. of Geology, 1967
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Oxalic acid production by the ectomycorrhizal fungus Hebeloma westraliensis and its role in the nutrient acquisition and growth of Eucalyptus diversicolor in calcareous soil
… Chapter 2 reports on a study on the growth and oxalic acid production of <u>H. westraliensis</u> in calcareous and noncalcareous liquid media. Oxalic acid is thought to chelate cations from phosphate precipitates allowing the release of phosphate into solution. L-threonine was added as an …
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Laboratory and Field Studies Directed toward Accelerating Arsenic Remediation at a Major US Superfund Site in New Jersey
… pore volumes suggest that treatment with 10 mM oxalic acid could lower the time necessary for clean up at the Vineland site from 600 years (with current techniques involving just groundwater) to potentially on the order of 4 years. Small scale (<1 mm2) X-ray fluorescence maps from columns …
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Application of organic acid functionalized cellulose for batch and aqueous two-phase extraction of sulfonamides from different matrices
… adsorption, cellulose was functionalized with oxalic and adipic acid. The resulting sorbents were then analyzed using FTIR, PXRD and SEM techniques. Based on FTIR analysis the optimal reaction time for cellulose functionalized with adipic acid and oxalic acid via hydrothermal treatment in an …
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Applications of CO2 in CO2-responsive foams and pyrochlore froth flotation
… project compares the effect of CO2 used as an acid instead of HCl or oxalic acid in pyrochlore mineral flotation. In micro-flotation testing it was found that at a pH of 4, the use of CO2 led to recoveries of pyrochlore and the gangue minerals quartz and microcline that are comparable with the …
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Host and pathogen genomics: the molecular repertoire of soybean and Sclerotinia interactions
… S. sclerotiorum or its primary virulence factor, oxalic acid. Microarray expression data was obtained from a transgenic soybean line expressing oxalate oxidase (OxO), an enzyme that degrades oxalic acid, and from its parent, the soybean cultivar ‘AC-Colibri’. Treatments included direct …
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Real time nanogravimetric monitoring of corrosion in radioactive environments
… in real time and with high sensitivity. Oxalic acid has been widely used in nuclear plants and installations as a corrosion inhibitor for carbon steels and as a decontamination cleaning agent due to its ability to remove rust from the surface of ferritic metals and alloys. As an exemplar …
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Co-processing of drugs and co-crystal formers and its effect on pharmaceutical dosage-form performance. Co-crystallization of urea/ 2-methoxybenzamide, caffeine/ malonic acid, caffeine/ oxalic acid and theophylline/ malonic acid systems: Solid-state characterization including imaging, thermal, X-ray and Raman spectroscopic techniques with subsequent evaluation of tableting behaviour
… form performance. Urea/ 2-MB, caffeine/ malonic acid, caffeine/ oxalic acid and theophylline/ malonic acid co-crystals were prepared using co-grinding- and co-precipitation techniques. In addition, the synthesis of co-crystals through two novel methods has been demonstrated. This includes …
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Transcriptomic characterization of soybean – sclerotinia sclerotiorum interaction at early infection stages
… (OxO) which contains an enzyme that degrades the oxalic acid (OA) produced by S. sclerotiorum thereby conferring resistance. The leaves were infected with S. sclerotiorum and samples were collected at 4 and 8 hours post inoculation (hpi) to characterize this interaction and to examine the key …
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A study of the comparative methods for the rare earth determination in bones and the rare earth content in human bones
… Method, the Calcium Sulfate Method, and the Oxalic Acid Method, for the chemical separation of the rare earth group from the other elements in bone ash have been investigated and the difficulties of each of the methods have been cited. A method separation based on the use of oxalic acid as …
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Systematic Study of Parameters Affecting Unconventional Magnetism in Gold Nanostructures
… low-potential anodization of gold in oxalic acid is studied with the goal of deducing mechanism and improving applicability. Oxalic acid is shown not to be the uniquely suitable electrolyte, with the finding of hydroquinone as a replacement, offering support to our model involving a …
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Advances in the theoretical determination of molecular structure with applications to anion photoelectron spectroscopy
… been observed experimentally. Acetoacetic acid (AA), equipped with neighbouring carboxylic and keto groups, is a promising system for studies of intramolecular proton transfer. The results of my computational search for the most stable tautomers and conformers of the neutral and anionic AA …
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Isolation and characterization of ferulic acid carbohydrate esters from corn hull (Zea mays)
… corn hulls (bran) were hydrolyzed with 30 mM oxalic acid in order to release carbohydrate fragments containing ferulic acid. The fragments which were high in ferulic acid also contained high levels of arabinose, xylose, and galactose, which are characteristic of sugars comprising corn hull …
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