Electronic Theses and Dissertation

Telah dilakukan penelitian membran selulosa asetat termodifikasi karbon aktif dari limbah plastik Polietilena Tereftalat (PET) untuk penghilangan urea dan kreatinin dalam limbah dialisat. Tujuan penelitian ini ialah untuk membuktikan kinerja membran selulosa asetat yang dimodifikasi dengan karbon aktif dari limbah plastik PET dalam proses penyaringan dan adsorpsi urea serta kreatinin dari larutan dialisat. Karakterisasi membran dilakukan dengan Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Bruaner-Emmert-Teller (BET), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), dan Universal Testing Machine. Membran selulosa asetat murni (SA11%-AC0%) memiliki derajat pengembangan dan porositas sebesar 45,22% dan 37,15%. Sedangkan membran termodifikasi karbon aktif (SA11%-AC40%) memiliki derajat pengembangan dan porositas lebih baik sebesar 63,44% dan 46,91%. Membran SA11%-AC0% memiliki nilai fluks sebesar 152,68 L/m2 jam, sedangkan membran SA11%-AC40% memiliki nilai fluks lebih baik sebesar 192,55 L/m
jam. Membran SA11%-AC40% mengadsorpsi urea dan kreatinin sebesar 230,662 mg/g dan 9,249 mg/g dengan total urea dan kreatinin sebesar 77,94% dan 80,06% membran termodifiksasi karbon aktif dengan penghilangan campuran
kreatinin lebih baik dibandingkan urea dalam proses penghilangan penyaringan dan adsorpsi urea dan kreatinin dalam limbah dialisat simulasi.

A study was conducted on cellulose acetate membranes modified with activated carbon derived from polyethylene terephthalate (PET) plastic waste for the removal of urea and creatinine from spent dialysate. This study aimed to evaluate the performance of activated carbon modified cellulose acetate membranes in the combined filtration and adsorption of urea and creatinine from dialysate solutions. Membrane characterization was carried out using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), and mechanical testing using a Universal Testing Machine. The pristine cellulose acetate membrane (SA11%–AC0%) exhibited a swelling degree and porosity of 45.22% and 37.15%, respectively. In comparison, the activated carbon modified membrane (SA11%–AC40%) demonstrated enhanced swelling degree and porosity of 63.44% and 46.91%, respectively. The flux of the SA11%–AC0% membrane was 152.68 L·m⁻²·h⁻¹, where as the SA11%–AC40% membrane achieved a higher flux of 192.55 L·m⁻²·h⁻¹. The SA11%–AC40% membrane exhibited urea and creatinine adsorption capacities of 230.662 mg/g and 9.249 mg/g, with total removal efficiencies of 77.94% and 80.06%, respectively. Overall, the activated carbon modified membrane showed superior removal performance for creatinine compared to urea, indicating its effectiveness for the selective removal of uremic toxins from simulated spent dialysate.