E-peroxone process for the treatment of laundry wastewater: A case study. Issue 5 (October 2017)
- Record Type:
- Journal Article
- Title:
- E-peroxone process for the treatment of laundry wastewater: A case study. Issue 5 (October 2017)
- Main Title:
- E-peroxone process for the treatment of laundry wastewater: A case study
- Authors:
- Turkay, Ozge
Barışçı, Sibel
Sillanpää, Mika - Abstract:
- Highlights: The concentration of H2 O2 and OH was determined as 10 g L 1− and 0.1567 μM in the E-peroxone, respectively. The OH concentration was 0.1872 μM in the ozonation, which is greater than E-peroxone. E-peroxone was not highly effective in eliminating COD; it did remove almost 77% methylene blue active substance (MBAS). EOX and ozonation processes removed 86% MBAS. Anion concentration increased dramatically during E-peroxone. Abstract: The treatment of laundry wastewater by ozonation, electro-oxidation (EOX), electro-oxidation with oxygen sparging (EOX with O2 sparging) and the combined electro-peroxone (E-peroxone) process was investigated. E-peroxone process is based on the production of H2 O2 electrochemically from O2 in sparged ozone generator effluent (O2 and O3 gas mixture) using carbon-polytetrafluorethylene (carbon-PTFE) cathodes. The electro-generated H2 O2 then reacts with sparged O3 to produce OH. The concentration of H2 O2 and OH was determined as ∼10 g L 1− and 0.1567 μM in the E-peroxone process, respectively. While no OH was produced in EOX, the measured OH concentration was 0.1872 μM in the ozonation process, which is greater than E-peroxone. All advanced processes adopted in this study effectively removed turbidity. Although, E-peroxone was not highly effective in eliminating chemical oxygen demand (COD) from laundry wastewater, it removed almost 77% methylene blue active substance (MBAS), whereas EOX and ozonation processes removed 86% MBAS. Besides,Highlights: The concentration of H2 O2 and OH was determined as 10 g L 1− and 0.1567 μM in the E-peroxone, respectively. The OH concentration was 0.1872 μM in the ozonation, which is greater than E-peroxone. E-peroxone was not highly effective in eliminating COD; it did remove almost 77% methylene blue active substance (MBAS). EOX and ozonation processes removed 86% MBAS. Anion concentration increased dramatically during E-peroxone. Abstract: The treatment of laundry wastewater by ozonation, electro-oxidation (EOX), electro-oxidation with oxygen sparging (EOX with O2 sparging) and the combined electro-peroxone (E-peroxone) process was investigated. E-peroxone process is based on the production of H2 O2 electrochemically from O2 in sparged ozone generator effluent (O2 and O3 gas mixture) using carbon-polytetrafluorethylene (carbon-PTFE) cathodes. The electro-generated H2 O2 then reacts with sparged O3 to produce OH. The concentration of H2 O2 and OH was determined as ∼10 g L 1− and 0.1567 μM in the E-peroxone process, respectively. While no OH was produced in EOX, the measured OH concentration was 0.1872 μM in the ozonation process, which is greater than E-peroxone. All advanced processes adopted in this study effectively removed turbidity. Although, E-peroxone was not highly effective in eliminating chemical oxygen demand (COD) from laundry wastewater, it removed almost 77% methylene blue active substance (MBAS), whereas EOX and ozonation processes removed 86% MBAS. Besides, anion concentration increased dramatically during E-peroxone treatment. This suggests that E-peroxone is insufficient to remove inorganics. Regarding the toxicity analysis, the lowest toxicity was observed in E-peroxone process as the inhibition rate was reduced to 22.45% from 80.64%. Moreover, specific energy consumption (SEC) values were calculated as 0.003, 0.079 and 0.067 kWh kg −1 for EOX, ozonation and E-peroxone, respectively. Hence, E-peroxone was found to be more cost-effective than ozonation in this case. However, EOX was found to be the most cost-effective process for laundry wastewater treatment. … (more)
- Is Part Of:
- Journal of environmental chemical engineering. Volume 5:Issue 5(2017)
- Journal:
- Journal of environmental chemical engineering
- Issue:
- Volume 5:Issue 5(2017)
- Issue Display:
- Volume 5, Issue 5 (2017)
- Year:
- 2017
- Volume:
- 5
- Issue:
- 5
- Issue Sort Value:
- 2017-0005-0005-0000
- Page Start:
- 4282
- Page End:
- 4290
- Publication Date:
- 2017-10
- Subjects:
- Electro-oxidation -- Electro-peroxone -- Ozonation -- Laundry wastewater -- Surfactant & COD removal
Chemical engineering -- Environmental aspects -- Periodicals
Environmental engineering -- Periodicals
Chemical engineering -- Environmental aspects
Environmental engineering
Periodicals
660.0286 - Journal URLs:
- http://www.sciencedirect.com/science/journal/22133437 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.jece.2017.08.012 ↗
- Languages:
- English
- ISSNs:
- 2213-2929
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 8555.xml