Removal of dyes using immobilized titanium dioxide illuminated by fluorescent lamps.
The photodegradation of various dyes in aqueous solution was studied. Experiments were carried out using glass coated titanium dioxide thin film as photocatalyst. Photodegradation processes of methylene blue (MB), methyl orange (MO), indigo carmine (IC), chicago sky blue 6B (CSB), and mixed dye (MD, mixture of the four mentioned single dye) were reported. As each photodegradation system is pH dependent, the photodegradation experiment was carried out in each dye photodegradation reactive pH range at approximately 28 degrees C. The dyes removal efficiency was studied and compared using UV-vis spectrophotometer analysis. The total removal of each dye was: methylene blue (90.3%), methyl orange (98.5%), indigo carmine (92.4%), chicago sky blue 6B (60.3%), and mixed dyes (70.1%), respectively. The characteristic of the photocatalyst was investigated using X-ray diffractometer (XRD). The amount of each dye intermediate produced in the photodegradation process was also determined with the help of total organic carbon (TOC) analysis.
Zainal
Zulkarnain
Z
Chemistry Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia. zulkar@fsas.upm.edu.my
Hui
Lee Kong
LK
Hussein
Mohd Zobir
MZ
Taufiq-Yap
Yun Hin
YH
Abdullah
Abdul Halim
AH
Ramli
Irmawati
I
D001391:Azo Compounds / Q000302:isolation & purification; D004396:Coloring Agents / Q000302:isolation & purification*; D005453:Fluorescence; D006863:Hydrogen-Ion Concentration; D007203:Indigo Carmine / Q000302:isolation & purification; D008751:Methylene Blue / Q000302:isolation & purification; D010777:Photochemistry / Q000295:instrumentation / Q000379:methods; D014025:Titanium; D014343:Trypan Blue; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D014877:Water Pollution, Chemical / Q000517:prevention & control*; D014961:X-Ray Diffraction / Q000379:methods
D001391:Azo Compounds; D004396:Coloring Agents; D014874:Water Pollutants, Chemical; D014867:Water; C009495:titanium dioxide; C009000:pontamine sky blue; C100258:methyl orange; D014025:Titanium; D007203:Indigo Carmine; D014343:Trypan Blue; D008751:Methylene Blue