ABSTRAKTelah dilakukan penelitian mengenai pengaruh kombinasi sistem adsorpsidan fotoelektrodegradasi untuk dekolorisasi Remazol Yellow FG. Adsorpsidilakukan menggunakan adsorben alumina dan silika yang diaktivasimenggunakan H2SO4 1 M dan NaOH 1 M. Fotoelektrodegradasi dilakukanmenggunakan elektroda Ti/TiO2 sebagai katoda dan Ti/TiO2-PbO sebagai anoda.Karakterisasi material dilakukan menggunakan spektrofotometer UV-Vis, X-RayDiffraction (XRD), dan Fourier Transform Infra Red (FTIR). Aktivasi adsorbendapat meningkatkan kemampuan adsorpsi Remazol Yellow FG pada aluminaaktivasi asam dan silika aktivasi basa masing-masing sebesar 99,50% dan81,63%. 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 zatwarna hingga 72,75%. Hasil sistem adsorpsi dan fotoelektrodegradasi dapat dikombinasikan sehingga menghasilkan persentase dekolorisasi Remazol Yellow FGmencapai 99,70%.Kata Kunci: Adsorpsi, fotoelektrodegradasi, Remazol Yellow FG, TiO2-PbOABSTRACTThe combination of adsorption and photoelectrodegradation system forRemazol Yellow FG decolorization has been studied. Adsorption was done usingalumina 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 andTi/TiO2-PbO as an anode. Material characterization were performed bySpectrophotometer UV-Vis, X-Ray Diffraction (XRD), and Fourier TransformInfra Red (FTIR). Activation of the adsorbent can increase Remazol Yellow FGadsorption on alumina base and silica acid were reached 99,50% and 81,63%,respectively. The optimum condition of Remazol Yellow FG 6 adsorption byalumina acid was at pH = 3, alumina base were at pH = 4 and pH = 10, silica acidwas at pH = 5, and silica base were at pH = 6 and pH = 10. Degradation ofRemazol Yellow FG using TiO2-PbO electrode was 72,75% at a potential cells of7,5 Volts for 10 minutes. The combination of adsorption andphotoelectrodegradation can decrease the concentration Remazol Yellow FGachieved 99,70%.Key words: Adsorption, photoelectrodegradation, Remazol Yellow FG, TiO2-PbO