Bulletin of the American Physical Society
75th Annual Gaseous Electronics Conference
Volume 67, Number 9
Monday–Friday, October 3–7, 2022;
Sendai International Center, Sendai, Japan
The session times in this program are intended for Japan Standard Time zone in Tokyo, Japan (GMT+9)
Session FF2: Green Plasma Science & Technology IV
10:00 AM–12:00 PM,
Friday, October 7, 2022
Sendai International Center
Room: Shirakashi 1
Chair: Tomohiro Nozaki, Tokyo Institute of Technology
Abstract: FF2.00008 : Photo-plasma: A new approach for efficient and enhanced mineralization of organic molecules*
11:45 AM–12:00 PM
Presenter:
Shaik Mahamad M Allabakshi
(Indian Institute of Technology Tirupati)
Authors:
Shaik Mahamad M Allabakshi
(Indian Institute of Technology Tirupati)
Psnsr R Srikar
(Indian Institute of Technology Tirupati)
Reetesh K Gangwar
(Indian Institute of Technology Tirupati)
Shihabudheen M Maliyekkal
(Indian Institute of Technology Tirupati)
Collaborations:
IIT Tirupati, CAMOST
Notably, Glauber's salts and solution pH did not influence the photo-SDBD performance. The data reveals that the new system could overcome the quenching of hydroxyl radicals due to background salts and recombination of hydroxyl radicals (•OH) and their conversion to hydrogen peroxide (H2O2). The analysis of reactive chemical species confirms a five-fold increase in the generation of hydroxyl radicals in photo-SDBD compared to SDBD. The system also showed a 2 to 10 times reduction in degradation time than SDBD or UV-C. This is attributed to breakdown of H2O2 in the presence of UV-C to •OH and possibly increased contact of reactive chemical species with the target contaminant. We believe that the present study would open pathways for developing a more efficient and green advanced treatment system to remove complex and recalcitrant organic molecules.
*Authors acknowledge the DST, Technology Mission Division [Grant no.: DST/TM/WTI/WIC/2K17/82], and SERB-DST [Grant nos.: CRG/2018/000419 and CVD/2020/000458] Government of India for supporting the research.
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