PENGARUH PENAMBAHAN AMONIUM KLORIDA TERHADAP KINERJA MEMBRAN KOMPOSIT ULTRAFILTRASI BERBASIS POLIETER SULFON/KITOSAN

Putri Citra Amanda, - (2022) PENGARUH PENAMBAHAN AMONIUM KLORIDA TERHADAP KINERJA MEMBRAN KOMPOSIT ULTRAFILTRASI BERBASIS POLIETER SULFON/KITOSAN. S1 thesis, Universitas Pendidikan Indonesia.

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Official URL: http://repository.upi.edu/

Abstract

Penelitian ini merupakan penelitian lanjutan untuk mengetahui pengaruh penambahan Amonium Klorida (NH4Cl) terhadap karakteristik dan kinerja membran komposit ultrafiltrasi berbasis Polietersulfon (PES)/Kitosan (CS). Membran PES disintesis melalui metode inversi fasa dalam pelarut dimetilasetamida (DMAc). Campuran larutan kitosan (konsentrasi tetap) dan NH4Cl (konsentrasi 100-400 ppm) dengan rasio 2:1 (v/v) ditambahkan pada membran PES melalui metode coating. Membran dikarakterisasi dengan spektroskopi FTIR, SEM, pengukuran sudut kontak, sifat mekanik, dan porositas. Kinerja membran ditentukan melalui uji permeabilitas air metode crossflow dan dead-end, rejeksi, serta sifat antifouling. Hasil penelitian menunjukkan bahwa membran komposit PES/kitosan/NH4Cl memiliki struktur asimetris berpori dan sebagian besar interaksi terjadi melalui ikatan hidrogen antara gugus O-H dan N-H. Penambahan konsentrasi NH4Cl terhadap membran komposit meningkatkan porositas dari 49% (M) menjadi 71% (M-100), sifat mekanik dari 11 MPa (M) menjadi 18 Mpa (M-0) dan hidrofilisitas (nilai θ dari 82° (M) menjadi 64° (M-400)). Fluks dan permeabilitas pada sistem filtrasi dead-end dan crossflow secara berturut-turut (M-0 ke M-400) meningkat dari 51 ke 159 L/m2.h dan dari 22 ke 26 L/m2∙h∙bar, serta dari 82 ke 182 L/m2∙h dan dari 16 ke 36 L/m2∙h∙bar. Selektivitas (rejeksi) terhadap Bovine Serum Albumine, metil jingga, dan metilen biru meningkat dari 75%, 60%, dan 47% (M) menjadi 96%, 89%, dan 97% (M-400). Membran komposit memiliki resistensi pengotoran (sifat antifouling) yang baik melalui peningkatan rasio faktor pemulihan (FRR) dari 53% (M) menjadi 70% (M-400), serta nilai rasio pengotoran (Rt, Rr, Rir) lebih rendah daripada membran PES. Berdasarkan hasil tersebut, dapat disimpulkan bahwa penambahan NH4Cl meningkatkan kinerja membran komposit PES/kitosan dalam ultrafiltrasi. This research is a follow-up study to determine the effect of adding Ammonium Chloride (NH4Cl) to the characteristics and performance of ultrafiltration composite membranes based on Polyether sulfone (PES)/Chitosan (CS). PES membranes were synthesized by phase inversion method in dimethylacetamide (DMAc) solvent. A mixture of chitosan solution (concentration fixed) and NH4Cl (concentration 100 400 ppm) with a ratio of 2:1 (v/v) added to the PES membrane through the coating. The membranes were characterized by FTIR spectroscopy, SEM, contact angle measurement, mechanical properties, and porosity. Membrane performance were tested by water permeability test with crossflow and dead-end method rejection, and antifouling. The results showed that the PES/chitosan/NH4Cl composite membrane had a porous asymmetrical structure and most of the interactions occurred through hydrogen bonds between the groups O-H and N-H. This research is a follow-up study to determine the effect of adding Ammonium Chloride (NH4Cl) to the characteristics and performance of ultrafiltration composite membranes based on Polyether sulfone (PES)/Chitosan (CS). PES membranes were synthesized by phase inversion method in dimethylacetamide (DMAc) solvent. A mixture of chitosan solution (concentration fixed) and NH4Cl (concentration 100 400 ppm) with a ratio of 2:1 (v/v) added to the PES membrane through the coating. The membranes were characterized by FTIR spectroscopy, SEM, contact angle measurement, mechanical properties, and porosity. Membrane performance were tested by water permeability test with crossflow and dead-end method rejection, and antifouling. The results showed that the PES/chitosan/NH4Cl composite membrane had a porous asymmetrical structure and most of the interactions occurred through hydrogen bonds between the groups O-H and N-H. The addition of NH4Cl concentration to the composite membrane increased the porosity and hydrophilicity (M-0). Flux and permeability in the dead-end and crossflow also increased. The selectivity (rejection) of Bovine Serum Albumin methyl orange, and methylene blue increased as the addition of NH4Cl. Composite membranes have good fouling resistance (antifouling) through an increase in the factor recovery ratio (FRR) and lower value of the impurity ratio (Rt, Rr, Rir) compared to the PES membrane. Based on these results, it can be concluded that the addition of NH4Cl improved the performance of PES/chitosan composite membranes in ultrafiltration.

Item Type: Thesis (S1)
Additional Information: Link Google Scholar Dosen Pembimbing: https://scholar.google.com/citations?user=KwSBfPgAAAAJ&hl=id&oi=ao https://scholar.google.com/citations?hl=id&user=1tY88b0AAAAJ ID SINTA Dosen Pembimbing: Fitri Khoerunnisa: 258263 Mita Nurhayati: 6745947
Uncontrolled Keywords: Membran komposit, filtrasi, uji kinerja, dead-end, cross-flow
Subjects: L Education > L Education (General)
Q Science > QD Chemistry
Divisions: Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Jurusan Pendidikan Kimia > Program Studi Kimia (non kependidikan)
Depositing User: Putri Citra Amanda
Date Deposited: 17 Oct 2022 03:48
Last Modified: 17 Oct 2022 03:48
URI: http://repository.upi.edu/id/eprint/80064

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