Topic
Oxalic acid
About: Oxalic acid is a research topic. Over the lifetime, 11584 publications have been published within this topic receiving 173263 citations. The topic is also known as: ethanedioic acid & H2ox.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this study, it is demonstrated that Mn2+ can greatly promote the Cr(VI) reduction by oxalic acid at pH<5 via an induction period and a subsequent auto-acceleration process, and shed insight into the possible roles of widely existed Mn ions (Mn2+ and Mn3+) and oxAlic acid in the transformation of Cr( VI) in natural aquatic environment.
53 citations
TL;DR: In this paper, the authors describe assembling Ce-doped Ti/SnO2-Sb (CTSS) electrodes via electrodeposition by using glucose, citric acid, tartaric acid, oxalic acid and nothing (for comparison) as an addition agent, respectively, for highly efficient organic wastewater treatment.
53 citations
TL;DR: In this paper, the authors investigated the recycling of poly(ethylene terephthalate) (PET) flakes to TPA and oxalic acid by simultaneous hydrolysis and oxygen oxidation in concentrated NaOH.
Abstract: Chemical recycling of poly(ethylene terephthalate) (PET) flakes to terephthalic acid (TPA) and oxalic acid was investigated by simultaneous hydrolysis and oxygen oxidation in concentrated NaOH. PET flakes were hydrolyzed to sodium terephthalate and ethylene glycol (EG) in NaOH solutions before oxygen introduction. Because sparingly soluble sodium terephthalate in concentrated NaOH solutions was stable to the oxidation, the TPA yield was approximately 100 mol % under all conditions. In contrast, EG was oxidized to oxalate and CO2, and the maximum oxalic acid yields were 60.7 mol % using flakes from the bodies of transparent bottles and 65.9 and 71.4 mol % using commercial transparent flakes and a mixture of transparent and green flakes from PET, respectively. If the gate fee (83.3¢/kg of PET) can be obtained as a waste PET recycling subsidy from the Japanese government, this process will generate a profit of $1,134.20 for the treatment of 1000 kg of PET as a net profit for 70 mol % of oxalic acid yield.
53 citations
TL;DR: Two processes driving chemical modifications of organic aerosol solutions are identified: formation of metabolites within several days, and rapid release of organic molecules from fungal species upon the insertion of taxa in organic aerosols solutions.
53 citations
TL;DR: In this article, a kinetic study of the electrochemical oxidation of ferulic acid (3methoxy-4-hydroxycinnamic acid) by direct electron transfer at treated gold disk was combined with results of electrolyses in order to produce total degradation into CO2 and H2O at Ta/PbO2 anode.
Abstract: A kinetic study of the electrochemical oxidation of ferulic acid (3-methoxy-4-hydroxycinnamic acid) by direct electron transfer at treated gold disk was combined with results of electrolyses in order to produce total degradation into CO2 and H2O at Ta/PbO2 anode. The oxidation of ferulic acid at gold electrode was studied by cyclic voltammetry. At low concentration, ferulic acid shows one irreversible anodic peak. The peak current shows adsorption characteristics. For ferulic acid concentrations higher than 0.02 mmol dm−3, the voltammogram shows two anodic peaks. The effect of experimental conditions on the ratio of these two peaks was examined. The proposed mechanism is based on the hypothesis of two-electron oxidation of ferulic acid molecule involving a three intermediate cation mesomers. Hydrolysis of these mesomers leads to the formation of caffeic acid, methoxyhydroquinone and 3,4-dihydroxy-5-methoxycinnamic acid. Then ferulic acid was quantitatively oxidised by electrolysis on lead dioxide to produce, via intermediate aromatic compounds, maleic acid, oxalic acid and formic acid whose oxidation leads to carbon dioxide.
53 citations