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Putri Ardyarini Sekartaji. Photocatalytic degradation of humic acid in a water environment. Master's Degree(Engineering and Technology). Thammasat University. Thammasat University Library. : Thammasat University, 2015.
Photocatalytic degradation of humic acid in a water environment
keyword:
Humic acid
;
ZnO
;
TiO2
Abstract:
Humic acid (HA) is a well-known complex organic compound which can generated disinfection by-product which are harmful for health when contacted with chlorine during the drinking water treatment. The photocatalysis is a compromise alternative solution for the HA degradation in a water environment. In this study, the degradation of HA, using titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles, irradiated by ultraviolet light, is investigated. The optimum conditions of pertinent factors, which include the light wavelength (UV-A and UV-C), and light intensity, HA concentration, catalyst dose, and contact time were investigated at neutral pH conditions, considered for drinking water treatment. Kinetics Langmuir-Hinshelwood are used to understand adsorption mechanisms and kinetics of HA degradation. In terms of the HA degradation efficiency, ZnO had higher HA degradation efficiency compared to TiO2. In the short contact time 30 min to 60 min, it was reached more than 90%. Moreover, ZnO photocatalyst proved to be more compatible with UV-A light, whereas, TiO2 with UV-C. Kinetics Langmuir-Hinshelwood was indicated that for both photocatalyst, under UV-A and UV-C irradiation followed a pseudo first order kinetic expression. The reusability of catalyst was performed and still revealed effective for beneficial commercial applications
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Sandhya Babel
Role:
advisor
Created:
2015
Modified:
2021-11-16
Issued:
2021-11-16
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Engineering and Technology
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.033755 วินาที
Putri Ardyarini Sekartaji
| Title | Contributor | Type |
|---|---|---|
| Photocatalytic degradation of humic acid in a water environment
มหาวิทยาลัยธรรมศาสตร์ Putri Ardyarini Sekartaji | Sandhya Babel | วิทยานิพนธ์/Thesis |
Sandhya Babel