Topic
1,4-Dioxane
About: 1,4-Dioxane is a research topic. Over the lifetime, 669 publications have been published within this topic receiving 9005 citations. The topic is also known as: Diethylene dioxide & Diethylene ether.
Papers published on a yearly basis
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Papers
TL;DR: In this article, the density, viscosity, refractive index for the sodium D-line, and speed of sound in binary mixtures of water with N,N-dimethylformamide, dimethyl sulfoxide, n,Ndimethylacetamide, acetonitrile, ethylene glycol, diethylene glyco-col, 1,4-dioxane, tetrahydrofuran, 2-methoxyethanol, and 2-ethoxy-ethanol have been determined at 298.15 K over the whole range of
Abstract: The density, viscosity, refractive index for the sodium D-line, and speed of sound in binary mixtures of water with N,N-dimethylformamide, dimethyl sulfoxide, N,N-dimethylacetamide, acetonitrile, ethylene glycol, diethylene glycol, 1,4-dioxane, tetrahydrofuran, 2-methoxyethanol, and 2-ethoxyethanol have been determined at 298.15 K over the whole range of mixture compositions. From these results, the excess molar volume, deviations in viscosity, speed of sound, molar refractivity, and isentropic compressibility have been calculated. The computed results are fitted to the Redlich-Kister polynomial equation to estimate the adjustable parameters and standard deviations. The observed negative VE values are compared with the available literature results.
357 citations
TL;DR: In this paper, the solubility of indomethacin (IMC) in 1,4-dioxane+water cosolvent mixtures was determined at several temperatures, 293.15-313.15 K. The authors used van't Hoff and Gibbs equations to obtain the thermodynamic functions: Gibbs energy, enthalpy, and entropy of solution and of mixing.
313 citations
TL;DR: AOPs are the only proven technology for 1,4-Dioxane treatment as discussed by the authors, however, recent studies have shown that 1 4-dioxane can be biodegraded as a sole carbon and energy source and that cost effective biological treatment processes can be developed.
Abstract: 1,4-Dioxane is classified as a probable human carcinogen. It is used as a stabilizer for chlorinated solvents, particularly, 1,1,1-trichloroethane (TCA), and it is formed as a by-product during the manufacture of polyester and various polyethoxylated compounds. Improper disposal of industrial waste and accidental solvent spills have resulted in the contamination of groundwater with 1,4-dioxane. Volatilization and sorption are not significant attenuation mechanisms due to 1,4-dioxane's complete miscibility with water. At present, advanced oxidation processes (AOPs) are the only proven technology for 1,4-dioxane treatment. 1,4-Dioxane was believed to be very resistant to both abiotic and biologically mediated degradation due to its heterocyclic structure with two ether linkages. However, recent studies have shown that 1,4-dioxane can be biodegraded as a sole carbon and energy source, and that cost-effective biological treatment processes can be developed. Future work should be oriented towards the developme...
287 citations
TL;DR: In this paper, the degradation mechanism of 1,4-dioxane and its byproducts in dilute aqueous solution toward complete mineralization was investigated by using the UV/H2O2 process in a UV semibatch reactor.
Abstract: 1,4-Dioxane is an EPA priority pollutant often found in contaminated groundwaters and industrial effluents. The common techniques used for water purification are not applicable to 1,4-dioxane, and the currently used method (distillation) is laborious and expensive. This study aims to understand the degradation mechanism of 1,4-dioxane and its byproducts in dilute aqueous solution toward complete mineralization, by using the UV/H2O2 process in a UV semibatch reactor. The decay of 1,4-dioxane generated several intermediates identified and quantified as aldehydes (formaldehyde, acetaldehyde, and glyoxal), organic acids (formic, methoxyacetic, acetic, glycolic, glyoxylic, and oxalic) and the mono- and diformate esters of 1,2-ethanediol. Measurement of the total organic carbon (TOC) during the treatment indicated a good agreement between the experimentally determined TOC values and those calculated from the quantified reaction intermediates, ending in complete mineralization. A reaction mechanism, which accoun...
267 citations
TL;DR: It has been demonstrated that the pKa values extrapolated from such solvent water mixtures are consistent with each other and with previously reported measurements.
236 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 7 |
| 2024 | 14 |
| 2023 | 20 |
| 2022 | 32 |
| 2021 | 21 |
| 2020 | 16 |