PHENANTHRENE PHOTODEGRADATION STUDIES WITH NANOPARTICLE-TIO2 PHOTOCATALYSTS
Phenanthrene is a type of low molecular weight Polycyclic Aromatic Hydrocarbon (PAH) that is isomeric to anthracene in chemical structure. Phenanthrene is part of coal and fossil fuel derivatives and the main product of combustion of organik materials. From an environmental aspect, phenanthrene...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/83762 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Phenanthrene is a type of low molecular weight Polycyclic Aromatic Hydrocarbon (PAH) that is
isomeric to anthracene in chemical structure. Phenanthrene is part of coal and fossil fuel derivatives
and the main product of combustion of organik materials. From an environmental aspect, phenanthrene
is toxic in the ecosystem and is included in the priority list of carcinogenic pollutants. This has prompted
research into the most effective remediation process to reduce phenanthrene contamination at certain
concentration levels. Photocatalytic process involving nanoparticles (NP)-TiO2 under ultraviolet light
is used in the photodegradation of organik compounds. This study aims to test the photodegradation of
phenanthrene based on the parameters of time, concentration, & lamp distance using NP-TiO2. NP
TiO2 was characterized using XRD and FTIR. While phenanthrene photodegradation testing by NP
TiO2 was carried out in a reactor and followed several variations, namely variations in NP-TiO2 mass,
reaction time, and lamp distance. Phenanthrene analysis was carried out with GC-FID. NP-TiO2
diffractogram shows this NP-TiO2 has a mixed phase of crystalline and amorphous. IR spectrum peaks
at wave numbers around 3400 cm-1 and 1600 cm-1 obtained are peaks due to stretching and bending of
O-H bonds in water molecules absorbed by TiO2. as well as a wide Ti-O-Ti peak in the 450-800 cm-1
region. NP-TiO2 characterization results with UV-DRS showed the lowest reflectance percentage of
31% at a wavelength of 331 nm in accordance with standard TiO2. The results of the phenanthrene
photocatalytic activity test showed that photodegradation followed pseudo first order and optimum
photodegradation occurred under conditions of TiO2 mass of 0.05 grams, lamp distance of 20 cm from
phenanthrene, and radiation time for 4 hours. Phenanthrene degraded under optimum conditions
amounted to 41.07%. |
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