Photocatalytic degradation of palm oil mill secondary effluent (POMSE) using zinc oxide nanoparticles
Palm oil mill secondary effluent (POMSE) properties still does not achieve the discharged requirement by the department of environment (DOE). Hence, it would be a solution to the POMSE treatment to recover and reuse the photocatalyst as to meet the development of greener and advanced technolog...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1122/2/24p%20NUR%20ZARIFAH%20ZAINURI.pdf http://eprints.uthm.edu.my/1122/1/NUR%20ZARIFAH%20ZAINURI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1122/3/NUR%20ZARIFAH%20ZAINURI%20WATERMARK.pdf |
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| Summary: | Palm oil mill secondary effluent (POMSE) properties still does not achieve the
discharged requirement by the department of environment (DOE). Hence, it would be
a solution to the POMSE treatment to recover and reuse the photocatalyst as to meet
the development of greener and advanced technologies. However, the study on
POMSE treatment using photocatalysis process in presence of ZnO-PEG nanoparticles
and its physicochemical is still limited. Therefore, this study reports on the comparison
of physicochemical properties between the ZnO nanoparticles in presence of the
different type of capping agent Commercial ZnO, ZnO-PEG and ZnO-PVP,
photocatalysis of POMSE by using ZnO nanoparticles and their potential of their
reusability. The physicochemical of the ZnO nanoparticles had been analysed using
XRD, FTIR and TEM where the results show that there are no impurities present in
the samples and presenting the nature and chemical bonds for ZnO-PEG, besides
having less agglomeration and smaller average in size (25-150 nm) compared to
Commercial ZnO and ZnO-PVP. ZnO-PEG nanoparticles have a great potential in
degradation of POMSE and this is supported with the results evaluated from four
potential factors which are (A) different type of photocatalysts, (B) initial pH of the
POMSE, (C) loading of ZnO-PEG and (D) concentration ratio of POMSE. It was
found that all the four main factors were substantial, with contributions of (A) 73%,
(B) 73 %, (C) 84% and (D) 84% respectively, to the POMSE degradation.
Accordingly, the most favourable condition for the photocatalysis process of POMSE
is under pH 6.5 in presence of ZnO-PEG with 0.5 g/L for the 25% of concentration
ratio of POMSE dilution. The calcination methods portrayed the maximum
degradation of POMSE colour after second use by 74% colour removal. Besides, the
same molecular components and structures for XRD and FTIR were portrayed which
indicates the reusability method is performed well. |
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