03876nas a2200469 a 4500 20260817163008.0 210704s2021 th u m rtt 000 a eng d .b12371932 AIT Thesis no.EV-21-09 Natakorn Thamthinawut Application of zinc oxide on indoor volatile organic compound removal Pathum Thani, Thailand : Asian Institute of Technology, 2021 48 leaves : ill. Thesis ; no. EV-21-09 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Environmental Engineering and Management Thesis (M. Eng.) - Asian Institute of Technology, 2021 Nowadays, indoor air quality is a concern of many people since people spend long time indoor than outdoor, and it can cause health problems. Indoor air pollutants are referring to total suspended particles (TSP), Sulfur Dioxide (SO2), Nitrogen Oxides (NOx), and Volatile Organic Compounds (VOCs), etc. Recently, Photocatalyst has been used to remove VOCs for improve indoor air quality. However, the effects of Photocatalyst on the Toluene as total VOCs concentration have not been studied. In this study, the photocatalytic reactor with the size of 22 x 28 x 20 cm3 which was a rectangular box with a volume of 8.5 L was used. An electric fan of 5 V was placed inside the box for completely mix of a Toluene gas in the box. The catalyst plates with the size of 15 x 20 cm2 and a brass valve of 1/4 inches with polyurethane tube of 1/8 inches were used for gas sampling. The measurement of VOC concentration was done by MiniRAE 3000. A Zinc Oxide (ZnO) was coated on glass sheet by hydrothermal synthesis of ZnO nanorods which could provide photocatalytic activity with visible light from halogen lamp source. The catalyst absorption spectrums were peak at 360 nm. The photocatalytic activity test in methylene blue under visible light irradiation demonstrated that there was photocatalytic activity by removing methylene blue by 25% more than photolysis by the removal with only halogen lamp. For the effect of ZnO catalyst with VOC removal, the ZnO catalyst removed 12.57% of VOC at catalyst area per air volume of 37.6 cm2 /L with an irradiation of 450 W/m2 . Increasing in catalyst area increased the VOC removal efficiency. Zinc oxide Air Pollution Health aspects Volatile organic compounds Environmental aspects Ekbordin Winijkul, Chairperson Thammarat Koottatep, Examination Committee Bora, Tanujjal, Examination committee Royal Thai Government Fellowship, Scholarship Donor Asian Institute of Technology. Thesis ; no. EV-21-09 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B13480 .b12371932 mnait m 240418 0 210704 m a m 0 mnait mnait mnarc mnarc 40 67 20 Barcode : 30050120885982 CREATED : 2021-07-14 RECORD # : i13349521 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : - CREATED : 2021-07-14 RECORD # : i13349533 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121022148 CREATED : 2023-12-01 RECORD # : i13424592 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121022130 CREATED : 2023-12-01 RECORD # : i13424609 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 6951 6951 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.EV-21-09 30050120885982 2026-08-17 16:30:08 1 2026-08-17 40 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.EV-21-09 2026-08-17 16:30:08 2026-08-17 67 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-21-09 30050121022148 2026-08-17 16:30:08 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-21-09 30050121022130 2026-08-17 16:30:08 2 2026-08-17 20