Topic
Peroxide process
About: Peroxide process is a research topic. Over the lifetime, 18 publications have been published within this topic receiving 240 citations. The topic is also known as: Ketazine process.
Papers
TL;DR: The main goal of this work is to develop a novel and environmental-friendly technology for cotton bleaching with reduced processing costs by exploiting a combined laccase-hydrogen peroxide process assisted by ultrasound.
35 citations
Patent•
15 Apr 1991TL;DR: In this article, a process for producing N-phosphonomethylglycine by the oxidation of NPHP-hyliminodiacetic acid with a peroxide is described.
Abstract: A process is provided for producing N-phosphonomethylglycine by the oxidation of N-phosphonomethyliminodiacetic acid with a peroxide to form an intermediate N-phosphonomethyliminodiacetic acid-N-oxide. Thereafter, the N-phosphonomethyliminodiacetic acid-N-oxide is converted to N-phosphonomethylglycine by adding a catalytic amount of a metal selected from the group consisting of iron, zinc, aluminum, vanadium and copper, or a compound selected from the group consisting of water-soluble vanadium compounds, ferrous salts and cuprous salts.
30 citations
TL;DR: In this paper, a membrane based pervaporation (PV) technique has been successfully applied using the chemically compatible and highly hydrophilic chitosan membrane to dehydrate the highly alkaline aqueous layer.
25 citations
TL;DR: In this paper, the authors investigated the effect of using Mg(OH)2 as an alkali source during peroxide bleaching on the formation of oxalate and its partition between soluble and precipitated oxalates.
Abstract: Oxalate is a major source of scaling during the manufacturing process of bleached mechanical pulps and the majority is formed during the peroxide bleaching stage. In this paper, we investigated the effect of using Mg(OH)2 as an alkali source during peroxide bleaching on the formation of oxalate and its partition between soluble and precipitated oxalates. We found that at the same brightness target, the total amount of oxalate formed is similar between the Mg(OH)2‐based peroxide system and the conventional NaOH‐based system, however, almost all of the newly formed oxalate from the former was found in the soluble state, while in the NaOH‐based peroxide process, a large fraction is in the precipitate form. Therefore, the oxalate‐related scaling is significantly less or even negligible during the Mg(OH)2‐based peroxide process. The underlying mechanism accounting for the above observation will be discussed.
24 citations
Journal Article•
TL;DR: In this article, the amount of precipitated oxalate was negligible when 30-50% of the NaOH was replaced with Mg(OH) 2 during bleaching.
Abstract: Calcium oxalate scaling can be minimized by partially replacing NaOH with Mg(OH) 2 as the alkali source in the peroxide bleaching of mechanical pulps. The amount of precipitated oxalate was negligible when 30-50% of the NaOH was replaced with Mg(OH) 2 during bleaching. A higher brightness was also achieved compared to the NaOH-based peroxide process. The addition of MgSO 4 at a high dosage to a peroxide stage can also decrease the amount of precipitated oxalate, but this approach is not as effective as the partial replacement of NaOH with Mg(OH) 2 .
18 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 1 |
| 2018 | 1 |
| 2016 | 1 |
| 2015 | 1 |
| 2014 | 1 |