Removal of flotation collector O-isopropyl-N-ethylthionocarbamate from wastewater

Wang, Zhe (author), Yao, Jun (author), Bavcon Kralj, Mojca (author), Dolenc, Darko (author), Trebše, Polonca (author)

Flotation collector O-isopropyl N-ethylthionocarbamate (IPETC) is widely used for separation of sulfide ores. Its removal from water by several oxidation processes was studied. Photocatalytic oxidation with air in the presence of iron salts, utilizing solar irradiation or artificial UV-A light is very efficient. Oxidation leads through the formation of O-isopropyl N-ethylcarbamate and several other reaction intermediates to total decomposition of organic compound in the final stage in 1 day. Similar results were obtained with a Fenton type oxidation with hydrogen peroxide and iron salts. Treatment with sodium hypochlorite yields mainly O-isopropyl N-ethylcarbamate. The formation of this compound in wastewaters can be of concern, since simple alkyl carbamates are cancer suspect agents.

• Language: English
• Keywords: O-isopropyl-N-ethylthionocarbamate, O-isopropyl N-ethylcarbamate, iron salts, photocatalysis, hypochlorite, Fenton reaction
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology; ZF - Faculty of Health Sciences
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 11 str.
• Numbering: Vol. 26, iss. 21, art. 6676
• PID: 20.500.12556/RUL-132857
• UDC: 544.526.5:546.133.1
• ISSN on article: 1420-3049
• DOI: 10.3390/molecules26216676
• COBISS.SI-ID: 83681283
• Publication date in RUL: 05.11.2021

Record is a part of a journal

• Title: Molecules
• Shortened title: Molecules
• Publisher: MDPI
• ISSN: 1420-3049
• COBISS.SI-ID: 18462981

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 04.11.2021

Secondary language

• Language: Slovenian
• Keywords: O-izopropil-N-etiltionokarbamat, O-izopropil N-etilkarbamat, železove soli, fotokataliza, hipoklorit, Fentonova reakcija