Yusuf, Iman Dimassetya Yanuar (2015) Recovery Garam Dari Air Konsentrat Reverse Osmosis Menggunakan Elektrodialisis Dengan Variasi Rapat Arus Dan Jumlah Kompartemen - Salt Recovery From Reverse Osmosis Concentrate Using Electrodialysis With Variations Of Current Density And Number Of Compartement. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Konsentrat reverse osmosis mengandung salinitas tinggi
sehingga mempengaruhi ekosistem laut. Elektrodialisis
merupakan salah satu alternatif pengolahan konsentrat reverse
osmosis. Proses yang terjadi adalah pemisahan garam dan air
yang terdapat pada limbah reverse osmosis. Rapat arus dan
jumlah kompartemen mempengaruhi efektifitas elektrodialisis
dalam mengolah konsentrat reverse osmosis. Penelitian ini
bertujuan untuk menganalisis efektifitas elektrodialisis dalam
mengolah limbah reverse osmosis dengan variasi rapat arus dan
jumlah kompartemen. Produk samping yang dihasilkan yaitu
recovery garam dan gas klor diteliti lebih lanjut.
Penelitian dilakukan dalam skala laboratorium dengan
reaktor sistem batch. Variabel yang akan diuji adalah rapat arus
dan jumlah kompartemen. Platina digunakan sebagai anoda dan
stainless steel sebagai katoda. Platina yang digunakan adalah
pen bekas patah tulang. Luas efektif membran sebesar 200 cm2.
Uji karakteristik konsentrat reverse osmosis dilakukan untuk
mengetahui parameter TDS, salinitas, pH, Cl- dan nilai
permanganat. Penelitian pendahuluan dilaksanakan untuk
mengetahui waktu operasi optimal untuk melakukan penelitian
utama. Prinsip kerja reaktor elektrodialisis adalah dengan
mengalirkan air konsentrat reverse osmosis pada kompartemen
anoda dan katoda sehingga kation dan anion bergerak ke
kompartemen tengah sehingga pada kompartemen tengah
terbentuk konsentrasi garam. Parameter yang diuji pada setiap
variasi adalah kandungan salinitas, pH, Cl- total chlorine dan nilai
permanganat Proses elektrodialisis dilakukan selama 36 jam pada
masing-masing variasi. Hasil pengamatan menunjukkan bahwa
semakin besar rapat arus maka penurunan salinitas juga semakin
tinggi. Berdasarkan analisis statistik, rapat arus dan jumlah
kompartemen berpengaruh signifikan terhadap penurunan
salinitas. Hal ini ditunjukkan dengan hasil penurunan salinitas
terbesar berada pada rapat arus 2,5 mA/cm2 dengan lima
kompartemen yaitu 20,56%. Hasil produk samping berupa
recovery garam terbesar adalah 29,28% sedangkan produksi
total chlorine terbesar adalah 50,83 mg/L yang terjadi pada
variasi 2,5 mA/cm2 dengan lima kompartemen.
========================================================================================================================
Reverse osmosis concentrate contains high salinity that
may pose adverse effects on marine ecosystems. Electrodialysis
is one alternative methods for reverse osmosis concentrate
treatment. Processes that occur in electrodialysis are cation-anion
separation which promotes salt recovery and chloride
minimisation through oxidation to produce chlorine gas. Current
density and number of compartement in the electrodialysis affects
the effectiveness of reverse osmosis concentrate treatment.
Relation between current density and number of compartement
for the effectiveness of treatment were investigated. Salt recovery
and production of chlorine gas further investigated.
This study was conducted in a laboratory scale with bacth
reactor system. Variables to be tested are current density and
number of compartement. Pt is used as anode and stainless steel
used as cathode. Membrane effective area is 200 cm2.
Caracteristics of reverse osmosis concentrate is tested to
determine TDS, salinity, Cl-, and permanganate value.
Preliminary studies carried out to determine the optimal duration
to be used in primary research. Principle of electrodialysis reactor
is distributing the reverse osmosis concentrate to anode and
cathode compartement so that cations and anions move into
middle compartement and forming salt concentration. Parameters
were tested at each variation are salinity, pH, total chlorine, Cl-,
and permanganate value.
Electrodialysis process performed for 36 hours on each
variation. The results showed that higher applied current density
lead to higher salinity removal efficiency. Based on statistical analysis, current density and number of compartement have a
significant effect to salinity removal efficiency. This is indicated by
the results of the highest salinity removal efficiency achieved at
current density of 2,5 mA/cm2 with five compartements was
20,56%. Results byproducts such as highest salt recovery is
29,28% while the highest production of total chlorine was 50,83
mg/L which occurs in 2,5 mA/cm2 with five compartements.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSL 628.167 Yus r |
| Uncontrolled Keywords: | elektrodialisis, jumlah kompartemen, rapat arus, recovery, reverse osmosis, current density, electrodialysis, number of compartement, recovery, reverse osmosis |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD479.3 Saline water conversion |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering |
| Depositing User: | ansi aflacha |
| Date Deposited: | 20 Nov 2019 04:01 |
| Last Modified: | 20 Nov 2019 04:01 |
| URI: | http://repository.its.ac.id/id/eprint/71910 |
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