The Use of TiO 2 -SiO 2 in Photocatalytic Process to Degrade Toxic and Dangerous Waste  

Oleh:

Destiarti, Lia ; Tjokronegoro, Roekmiati ; Rakhmawaty, Diana ; Rudiyansyah

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Makara Seri Sains vol. 19 no. 1 (Mar. 2015)
Topik: Cr(VI); LAS; phenol; photocatalyst; TiO2-SiO2
Fulltext: 4475-8303-3-PB_ros.pdf (440.6KB)

Isi artikel

This study was conducted to investigate the use of TiO 2 immobilized on SiO 2 (TiO 2 -SiO ) in a photocatalytic process to degrade toxic industrial waste, phenol, linear alkylbenzene sulfonate (LAS), and Cr(VI), which is dangerous for humans and the environment. Titanium dioxide (TiO 2 2 ), as a photocatalyst, can make the solution become turbid. Thus, TiO SiO was used to increase the possibility of ultraviolet (UV) transmission. The phenol and LAS levels were measured with the Indonesian National Standard (INS) while the Cr(VI) level was determined with the colorimetric method. The activity test for the catalyst in suspension and immobilization against phenol showed that TiO 2 was more active than TiO 2 . By using the photocatalytic process with the TiO 2 -SiO 2 2 photocatalyst for 8 h, degradation of phenol and LAS reached 50% as a single compound and 12% as a mixture. However, TiO 2 -SiO did not decrease Cr(VI). 2 -SiO 2 2

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