Abstract
The research into oxidation of aqueous humic substances (HS) with pulsed corona discharge (PCD) was undertaken to estimate the energy efficiency of the treatment. The PCD system consists of a voltage pulse generator and reactor, in which the gas-phase discharge generating ·OH radicals and ozone treats the water showered between electrodes. The influence of HS initial concentration, pulse repetition frequency,water flow rate, and the atmosphere composition was evaluated by the decrease in total organic carbon (TOC) and color. The PCD treatment reduced TOC by 40 to 50% and the color by up to 97%. The PCD energy efficiency ranged about 20 g kW -1 h -1 in air and 30 g kW -1 h -1 in oxygen for the lowest initial color of about 50 Pt-Co degrees. Ozone contributed about 30% to the color reduction and only 15% to the reduction in TOC, indicating predominant role of ·OH radicals in mineralization of oxidation by-products.
| Original language | English |
|---|---|
| Pages (from-to) | 238-245 |
| Number of pages | 8 |
| Journal | Water Science and Technology: Water Supply |
| Volume | 11 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2011 |
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Keywords
- Advanced oxidation processes
- AOPs
- Energy efficiency
- Humic acids
- Ozone
- Water
ASJC Scopus subject areas
- Water Science and Technology
Cite this
Pulsed corona discharge for degradation of aqueous humic substances. / Panorel, Iris; Kornev, Iakov; Hatakka, Henry; Preis, Sergey.
In: Water Science and Technology: Water Supply, Vol. 11, No. 2, 2011, p. 238-245.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Pulsed corona discharge for degradation of aqueous humic substances
AU - Panorel, Iris
AU - Kornev, Iakov
AU - Hatakka, Henry
AU - Preis, Sergey
PY - 2011
Y1 - 2011
N2 - The research into oxidation of aqueous humic substances (HS) with pulsed corona discharge (PCD) was undertaken to estimate the energy efficiency of the treatment. The PCD system consists of a voltage pulse generator and reactor, in which the gas-phase discharge generating ·OH radicals and ozone treats the water showered between electrodes. The influence of HS initial concentration, pulse repetition frequency,water flow rate, and the atmosphere composition was evaluated by the decrease in total organic carbon (TOC) and color. The PCD treatment reduced TOC by 40 to 50% and the color by up to 97%. The PCD energy efficiency ranged about 20 g kW -1 h -1 in air and 30 g kW -1 h -1 in oxygen for the lowest initial color of about 50 Pt-Co degrees. Ozone contributed about 30% to the color reduction and only 15% to the reduction in TOC, indicating predominant role of ·OH radicals in mineralization of oxidation by-products.
AB - The research into oxidation of aqueous humic substances (HS) with pulsed corona discharge (PCD) was undertaken to estimate the energy efficiency of the treatment. The PCD system consists of a voltage pulse generator and reactor, in which the gas-phase discharge generating ·OH radicals and ozone treats the water showered between electrodes. The influence of HS initial concentration, pulse repetition frequency,water flow rate, and the atmosphere composition was evaluated by the decrease in total organic carbon (TOC) and color. The PCD treatment reduced TOC by 40 to 50% and the color by up to 97%. The PCD energy efficiency ranged about 20 g kW -1 h -1 in air and 30 g kW -1 h -1 in oxygen for the lowest initial color of about 50 Pt-Co degrees. Ozone contributed about 30% to the color reduction and only 15% to the reduction in TOC, indicating predominant role of ·OH radicals in mineralization of oxidation by-products.
KW - Advanced oxidation processes
KW - AOPs
KW - Energy efficiency
KW - Humic acids
KW - Ozone
KW - Water
UR - http://www.scopus.com/inward/record.url?scp=80051739957&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80051739957&partnerID=8YFLogxK
U2 - 10.2166/ws.2011.045
DO - 10.2166/ws.2011.045
M3 - Article
VL - 11
SP - 238
EP - 245
JO - Water Science and Technology: Water Supply
JF - Water Science and Technology: Water Supply
SN - 1606-9749
IS - 2
ER -