Electronic Theses and Dissertation

Pencemaran limbah emulsi minyak dari aktivitas industri menjadi salah satu tantangan lingkungan serius. Penelitian ini bertujuan mengembangkan membran berbasis sellulosa asetat (CA) dari filter rokok yang dimodifikasi dengan penambahan asam tanin dan FeCl3+ sebagai aditif menggunakan teknik pelapisan vacuum filtration. Filter rokok yang mengandung 97% selulosa asetat dipilih sebagai bahan baku utama karena ketersediaannya yang melimpah dan potensi sebagai bahan ramah lingkungan. Asam tanin dan FeCl3+ di tambahkan pada membran dengan tujuan meningkatkan sifat hidrofilik, sifat anti-fouling, dan efisiensi pemisahan emulsi minyak. Uji karakteristik membran meliputi analisis morfologi dengan SEM, analisis gugus fungsi menggunakan FTIR, serta pengukuran porositas, water uptake, dan sudut kontak air (WCA). Uji filtrasi membran meliputi pengukuran fluks air murni, selektivitas terhadap emulsi minyak, dan uji antifouling. Hasil penelitian menunjukkan membran dengan penambahan asam tanin dan FeCl3+ memiliki distribusi pori lebih merata, sifat hidrofilisitas yang lebih baik, dan kinerja antifouling yang lebih tinggi dibandingkan membran tanpa aditif. Selektivitas terhadap emulsi minyak mencapai >95%, dengan nilai fluks air murni yang optimal pada komposisi tertentu. Penambahan asam tanin dan FeCl3+ terbukti efektif dalam meningkatkan ketahanan fouling hingga mencapai nilai 84%, menjadikan membran berbasis filter rokok sebagai solusi inovatif dan ekonomis dalam pengolahan limbah emulsi minyak.

Oil emulsion waste pollution from industrial activities is one of the serious environmental challenges. This study aims to develop a cellulose acetate (CA)-based membrane from cigarette filters modified with the addition of tannic acid and FeCl3+ as additives using a vacuum filtration coating technique. Cigarette filters containing 97% cellulose acetate were selected as the main raw material because of their abundant availability and potential as environmentally friendly materials. Tannic acid and FeCl3+ were added to the membrane with the aim of increasing the hydrophilic properties, anti-fouling properties, and efficiency of oil emulsion separation. Membrane characteristic tests included morphological analysis with SEM, functional group analysis using FTIR, and measurement of porosity, water uptake, and water contact angle (WCA). Membrane filtration tests included measurement of pure water flux, selectivity to oil emulsions, and antifouling tests. The results showed that the membrane with the addition of tannic acid and FeCl3+ had a more even pore distribution, better hydrophilicity properties, and higher antifouling performance compared to the membrane without additives. Selectivity to oil emulsion reaches >95%, with optimal pure water flux value at certain composition. The addition of tannic acid and FeCl3+ has been proven effective in increasing fouling resistance up to 84%, making cigarette filter-based membrane an innovative and economical solution in oil emulsion waste processing.