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ABSTRAK Telah dilakukan penelitian mengenai pengaruh kombinasi sistem adsorpsi dan fotoelektrodegradasi untuk dekolorisasi Remazol Yellow FG. Adsorpsi dilakukan menggunakan adsorben alumina dan silika yang diaktivasi menggunakan H2SO4 1 M dan NaOH 1 M. Fotoelektrodegradasi dilakukan menggunakan elektroda Ti/TiO2 sebagai katoda dan Ti/TiO2-PbO sebagai anoda. Karakterisasi material dilakukan menggunakan spektrofotometer UV-Vis, X-Ray Diffraction (XRD), dan Fourier Transform Infra Red (FTIR). Aktivasi adsorben dapat meningkatkan kemampuan adsorpsi Remazol Yellow FG pada alumina aktivasi asam dan silika aktivasi basa masing-masing sebesar 99,50% dan 81,63%. Faktor pH mempengaruhi kemampuan adsorpsi Remazol Yellow FG, dimana alumina asam optimum pH = 3, alumina basa optimum pH = 4 dan pH = 10, silika asam optimum pH = 5, silika basa optimum pH = 6 dan pH = 10. Fotoelektrodegradasi zat warna Remazol Yellow FG menggunakan anoda TiO2- PbO dengan beda potensial 7,5 Volt selama 10 menit mampu mendegradasi zat warna hingga 72,75%. Hasil sistem adsorpsi dan fotoelektrodegradasi dapat di kombinasikan sehingga menghasilkan persentase dekolorisasi Remazol Yellow FG mencapai 99,70%. Kata Kunci: Adsorpsi, fotoelektrodegradasi, Remazol Yellow FG, TiO2-PbO ABSTRACT The combination of adsorption and photoelectrodegradation system for Remazol Yellow FG decolorization has been studied. Adsorption was done using alumina and silica, which it were activated using H2SO4 1 M and NaOH 1 M. Photoelectrodegradation cell were built by electrode Ti/TiO2 as a cathode and Ti/TiO2-PbO as an anode. Material characterization were performed by Spectrophotometer UV-Vis, X-Ray Diffraction (XRD), and Fourier Transform Infra Red (FTIR). Activation of the adsorbent can increase Remazol Yellow FG adsorption on alumina base and silica acid were reached 99,50% and 81,63%, respectively. The optimum condition of Remazol Yellow FG 6 adsorption by alumina acid was at pH = 3, alumina base were at pH = 4 and pH = 10, silica acid was at pH = 5, and silica base were at pH = 6 and pH = 10. Degradation of Remazol Yellow FG using TiO2-PbO electrode was 72,75% at a potential cells of 7,5 Volts for 10 minutes. The combination of adsorption and photoelectrodegradation can decrease the concentration Remazol Yellow FG achieved 99,70%. Key words: Adsorption, photoelectrodegradation, Remazol Yellow FG, TiO2- PbO |