FIBRICATION OF BIOCHAR FROM WASTE CASSAVA PEEL FOR APPLICATION AS METHYLENE BLUE ADSORBENT IN WASTEWATER

Abstract

In this study, waste cassava peel was calcinated without oxygen at 600 ⁰C for 1 hour to obtain biochar, namely BC-S sample for application as methylene blue adsorbent. The morphological and surface structural properties of BC-S were measured using modern analytical methods such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET). Based on the analysis results, it was shown that the surface morphology of BC-S was in the form of flat particles stacked on top of each other, containing many holes, with an average particle size of 10 µm. The BC-S sample structure existed in the form of carbon graphite crystals containing the vibration groups C-H, C=C, S=O, N-H, CO, and OH which were characteristic peaks of biochar with specific surface area of 2,66 m²/g. In application of BC-S as methylene blue adsorbent, the color adsorption capacity survey showed that the maximum adsorption capacity was 5,10 mg MB/g BC-S. The results show that it is possible to use of BC-S as an adsorbent for the treatment of colored wastewater widely on an industrial scale.