Modifikasi Tembikar Tanah Liat Dengan Fotokatalis Tio2 Untuk Menurunkan Kadar Polutan Organik Air Gambut
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Date
2018-03-08
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Abstract
Has been made modifications Clay pottery commonly used as a container of water for
household needs. The pottery acts as a top-cut photocatalyst reactor so that the surface
area of the sample will be more readily exposed to UV, wherein the inner side of the
Pottery is coated with TiO2 sol gel method of split coating technique. TiO2 paste is
prepared by dissolving 5 gr of TiO2 (anatase) powder in 20 mL of ethanol. The paste is
stirred with a magnetic stirrer for 30 minutes at a rotational speed of 300 rpm for a
homogeneous solution. Prepared TiO2 paste is placed on the inner side of the Pottery by
split coating the TiO2 paste and flattened with a spatula, this layer is made up to 3 layers.
After the coating process, the pottery is allowed to dry in the open air. Then Titania coated
pottery is ready for dehydrolysis at 400 ° C for 10 minutes for the organic material to
evaporate. The results of crystal structure testing with x-ray diffractometer (XRD) showed
that more coatings were done causing the crystal quality of TiO2 thin films would be
increase. In addition, more coatings are done causing the crystal size of the TiO2 thin film
to increase. The results of test COD and BOD values, showed photocatalyst reactor from
clay pottery modification can reduce the content of BOD by 4.45mg / l and COD by 27.20
mg / l. The organic substance and the acidity level of the peat water samples appear to be
reduced is indicated by PH 5.7
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Keywords
Photocatalyst, Split Coating, Organic Pollutants