Topic
Potassium dichromate
About: Potassium dichromate is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 18967 citations. The topic is also known as: Potassium dichromate(VI) & Chromium potassium oxide.
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24 Jun 2018
TL;DR: In this paper, the authors investigated the interference of hydrogen peroxide from plasma treatment by reducing the potassium dichromate oxidizing agent, and then measured the residual peroxide and overall chemical oxygen demand of the samples.
Abstract: Plasma-liquid interaction generates hydrogen peroxide, ozone, and other reactive species along with ultraviolet radiation and short-lived highly reactive hydroxyl radicals, thus representing a novel advanced oxidation process for removal of recalcitrant organic compounds and overall chemical oxygen demand (COD). The COD test is ubiquitous in wastewater treatment as a measurement of the pollution potential of organic matter present in the waste stream; however, residual hydrogen peroxide from plasma treatment interferes with COD analysis by reducing the potassium dichromate oxidizing agent. The magnitude of this interference is investigated by dosing waters with hydrogen peroxide by chemical solution and by dielectric barrier discharge plasma jet, and then measuring the residual peroxide and COD of the samples. Corresponding samples are aerated to strip the hydrogen peroxide and the COD is assessed. Tests are performed with deionized water, as well as diluted solutions of methylene blue and ethylene glycol.
9 citations
TL;DR: In this paper, the dissolution of Ni 3 S 2 in sulphuric acid solutions containing potassium dichromate was investigated and the effect of temperature, dichromates ion concentration, sulphur acid concentration and particle size has been examined.
9 citations
TL;DR: The accuracy of the standardization of a sodium thiosulfate solution by potassium dichromate was discussed from the apparent assays of potassium dichromaate under different measurement conditions.
9 citations
TL;DR: The results suggest that not only the existence of collagen macromolecules with right-handed triple helix structure but also their long-range arrangement is essential for the spiral growth of K 2 Cr 2 O 7.
Abstract: We have studied the effect of salts, adenosine triphosphate (ATP) and glycoprotein on the growth of huge right-handed spiral crystals of potassium dichromate (K 2 Cr 2 O 7 ) in gelatin gel. These materials are known to induce, respectively, amorphous, short-range and long-range arrangements of collagen macromolecules that constitute the gelatin-gel network. It was revealed that both salts and ATP have a clear tendency to reduce the spiral growth of K 2 Cr 2 O 7 , while glycoprotein strongly enhances it. These results suggest that not only the existence of collagen macromolecules with right-handed triple helix structure but also their long-range arrangement is essential for the spiral growth of K 2 Cr 2 O 7 .
9 citations
9 citations