Ramadhani, Arnesya (2021) Modifikasi Membran Cellulose Acetate/Polyethylene Glycol (CA/PEG) Dengan Penambahan Nanopartikel PEG-g-GO-SiO2, PEG-g-GO-TiO2 dan PEG-g-GO/CNT Untuk Proses Desalinasi. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pertumbuhan penduduk yang semakin pesat berbanding terbalik dengan
ketersediaan air bersih, untuk mengatasi krisis air bersih beberapa jenis teknologi
desalinasi air laut telah dikembangkan. Desalinasi sangat menjanjikan karena dapat
mengurangi kandungan garam atau zat terlarut sampai konsentrasi tertentu sehingga
dapat dikonsumsi. Membran Cellulose Acetate/Polyethylene Glycol (CA/PEG)
merupakan jenis membran yang digunakan dalam reverse osmosis. Tujuan dari
penelitian ini yaitu untuk mengetahui pengaruh variasi non solvent seperti
isopropanol, metanol, isopropanol-air, metanol-air terhadap membran Cellulose
Acetate/Polyethylene Glycol/Polyethylene Glycol - grafting - Graphene Oxide
(CA/PEG/PEG-g-GO), serta mengetahui pengaruh penambahan nanopartikel
Polyethylene Glycol - grafting - Graphene Oxide - Silikon Dioksida (PEG-g-GOSiO2), Polyethylene Glycol - grafting - Graphene Oxide - Titanium Dioksida (PEGg-GO-TiO2) dan Polyethylene Glycol - grafting - Graphene Oxide/Carbon
Nanotube (PEG-g-GO/CNT) terhadap membran CA/PEG. Tahapan pertama yang
dilakukan adalah sintesa membran CA/PEG/PEG-g-GO mengunakan solvent N,NDimethylformamide (DMF) dan variasi non-solvent. Tahapan kedua adalah sintesa
membran CA/PEG terbaik dengan non-solvent terbaik kemudian ditambahkan
nanopartikel PEG-g-GO/CNT sebesar rasio 100/0, 70/30, 50/50, 30/70, dan 0/100
dari 0.05% berat polimer, PEG-g-GO-TiO2 sebesar 0.01%, 0.02%, 0.03%, 0.05%,
dan 0.07% berat polimer dan PEG-g-GO-SiO2 sebesar 0.01%, 0.02%, 0.03%,
0.05%, dan 0.07% berat polimer. Interaksi pada membran terjadi secara fisik yang
dibuktikan dengan uji XRD dan uji FT-IR. Pada tahap pertama diperoleh nonsolvent terbaik yaitu water dengan rijeksi garam dan fluks sebesar 75% dan 1985.3
L/m2.h. Pada Tahap ke dua, penambahan PEG-g-GO-SiO2 terbaik yaitu pada
variable 0.05% dihasilkan rijeksi garam dan fluks sebesar 72% dan 134 L/m2.h,
membran yang dihasilkan lebih hidrofilik. Penambahan PEG-g-GO-TiO2 terbaikii
yaitu pada variable 0.02% dihasilkan rijeksi garam dan fluks sebesar 80% dan 43
L/m2.h, pada variable ini dihasilkan tensile strength yang tinggi. Penambahan PEGg-GO/CNT terbaik yaitu pada rasio 50/50 dari 0.05% berat polimer, dihasilkan
rijeksi garam dan fluks sebesar 72% dan 45 L/m2.h, pada variable ini juga memiliki
tensile strength yang tinggi. Membran CA/PEG/PEG-g-GO-TiO2 0.02% selain
mempunyai kinerja yang terbaik juga mempunyai anti fouling yang paling tinggi
diantara nanopartikel lainnya yaitu (Flux Recovery Ratio) FRR sebesar 90%.
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The population growth which is getting faster is inversely proportional to
the number of clean water. To overcome the clean water crisis several types of
seawater desalination technology have been developed. Desalination is very
promising because it can reduce the salt or solute content to a certain concentration
so that it can be consumed. Cellulose Acetate/Polyethylene Glycol (CA PEG)
membrane is a type of membrane used in reverse osmosis. The purpose of this study
is to see the effect of non-solvent variations such as isopropanol, methanol,
isopropanol-water, methanol-water on the Cellulose Acetate/Polyethylene
Glycol/Polyethylene Glycol - grafting - Graphene Oxide (CA/PEG/PEG-g-GO)
membrane, as well as the alarm on the effect of adding Polyethylene Glycol –
grafting - Graphene Oxide – Silikon Dioksida (PEG-g-GO-SiO2), Polyethylene
Glycol – grafting - Graphene Oxide – Titanium Dioksida (PEG-g-GO-TiO2) and
Polyethylene Glycol – grafting - Graphene Oxide/Carbon Nanotube (PEG-gGO/CNT) nanoparticles against the CA/PEG membrane. The first step to take is the
synthesis of the CA/PEG/PEG-g-GO membrane using N,N-Dimethylformamide
(DMF) solvents and non-solvent variations. The second stage is the synthesis of the
best CA/PEG membrane with the best non-solvent, then adding PEG-g-GO/CNT
nanoparticles with a ratio of 100/0, 70/30, 50/50, 30/70, and 0/100 of 0.05% weight.
polymer, PEG-g-GO-TiO2 by 0.01%, 0.02%, 0.03%, 0.05%, and 0.07% by weight
of the polymer and PEG-g-GO-SiO2 by 0.01% , 0.02%, 0.03%, 0.05%, and 0.07%
by weight of the polymer. The interaction on the membrane occurs physically as
evidenced by the XRD test and FT-IR test. In the first stage, the best non-solvent
was obtained, namely water with a salt rejection and a flux of 75% and 1985.3
L/m2
.h. In the second stage, the best addition of PEG-g-GO-SiO2 at 0.05% variable
resulted in salt rejection and flux of 72% and 134 L/m2
.h, the resulting membrane
was more hydrophilic. The best addition of PEG-g-GO-TiO2 at 0.02% variable
resulted in a salt rejection and a flux of 80% and 43 L/m2
.h, on the variable that
produced high tensile strength. The best addition of PEG-g-GO/CNT with a ratio
of 50/50 of 0.05% by weight of the polymer, resulted in salt rejection and flux of
72% and 45 L/m2
.h, this variable also has high tensile strength. The CA/PEG/PEGg-GO-TiO2 membrane has the best performance which also has the highest antifouling among other nanoparticles, namely a (Flux Recovery Ratio) FRR of 90%.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | CA, PEG, nanopartikel, non pelarut |
| Subjects: | T Technology > TP Chemical technology > TP248.25.M46 Membrane separation |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Chemical Engineering > 24101-(S2) Master Thesis |
| Depositing User: | Arnesya Ramadhani |
| Date Deposited: | 05 Mar 2021 00:18 |
| Last Modified: | 05 Mar 2021 00:18 |
| URI: | http://repository.its.ac.id/id/eprint/83463 |
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