Electronic Theses and Dissertation

Membran selulosa asetat yang dimodifikasi dengan glisidil metakrilat (GMA) telah dilakukan dan dibuat dari selulosa asetat komersial. Tujuan pembuatan membran ini untuk menyerap kreatinin dalam air limbah dialisat. Hasil karakterisasi membran selulosa asetat murni (SA-GMA0%) memiliki kuat tarik 8,42 Kgf/mm2 sedangkan pada membran modifikasi glisidil metakrilat (SA-GMA15%) memiliki kuat tarik yang lebih baik sebesar 10,62 Kgf/mm2. Membran SA-GMA0% memiliki derajat pengembangan dan porositas sebesar 17,84% dan 25,67% sedangkan pada membran SA-GMA15% memiliki derajat pengembangan dan porositas lebih baik sebesar 22,85% dan 46,71%. Membran SA-GMA0% memiliki nilai fluks sebesar 22,70 L/m2 jam sedangkan pada membran SA-GMA15% memiliki nilai fluks lebih baik yaitu sebesar 40,36 L/m2 jam. Hasil pengujian membran dilakukan pada waktu kontak 300 menit (5 jam). Pengujian isoterm adsorpsi menunjukkan adsorpsi kreatinin menggunakan membran SA-GMA15% mengikuti persamaan adsorpsi isoterm Langmuir dengan nilai R2 yaitu sebesar 0,97807. Membran SA-GMA0% mampu menghilangkan kreatinin dalam proses adsorpsi kreatinin sistem kontinyu (dialisis) selama waktu 6 jam sebesar 4,357 mg/g dengan persen removal sebesar 14,35% sedangkan membran SA-GMA15% mampu menghilangkan kreatinin sebesar 5,791 mg/g dengan persen removal yaitu sebesar 56,65%. Hasil menunjukkan bahwa membran SA-GMA15% memiliki kemampuan menyerap kreatinin lebih baik dibandingkan dengan membran SA-GMA0% karena sudah mendekati kadar normal kreatinin yang ditetapkan yaitu kadar normal kreatinin pada pria 7-13 ppm sedangkan pada wanita yaitu 6-11 ppm.
Kata kunci: Membran, selulosa asetat, glisidil metakrilat, dan adsorpsi kreatinin

Cellulose acetate membrane modified with glycidyl methacrylate (GMA) has been carried out and made from commercial cellulose acetate. The purpose of making this membrane is to absorb creatinine in dialysate wastewater. The characterization results of pure cellulose acetate membrane (SA-GMA0%) have a tensile strength of 8.42 Kgf/mm2 while the glycidyl methacrylate modified membrane (SA-GMA15%) has a better tensile strength of 10.62 Kgf/mm2. The SA-GMA0% membrane has a degree of swelling and porosity of 17.84% and 25.67% while the SA-GMA15% membrane has a better degree of swelling and porosity of 22.85% and 46.71%. The SA-GMA0% membrane has a flux value of 22.70 L/m2 hour while the SA-GMA15% membrane has a better flux value of 40.36 L/m2 hour. The results of the membrane test were carried out at a contact time of 300 minutes (5 hours). The adsorption isotherm test showed that creatinine adsorption using the SA-GMA15% membrane followed the Langmuir isotherm adsorption equation with an R2 value of 0.97807. The SA-GMA0% membrane was able to remove creatinine in the continuous system creatinine adsorption process (dialysis) for 6 hours of 4.357 mg/g with a removal percentage of 14.35% while the SA-GMA15% membrane was able to remove creatinine of 5.791 mg/g with a removal percentage of 56.65%. The results showed that the SA-GMA15% membrane had a better ability to absorb creatinine compared to the SA-GMA0% membrane because it was close to the normal creatinine levels that were set, namely the normal creatinine levels in men were 7-13 ppm while in women it was 6-11 ppm. Keywords: Membrane, cellulose acetate, glycidyl methacrylate, and creatinine adsorption