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

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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