INFLUENCE OF DIRECT CURRENT VOLTAGE TOWARDS CONDUCTIVITY OF BARIUM CARBONATE SOLUTION IN ELECTRONIC WATER PURIFICATION SYSTEM (EWP) WITH GRAPHITE PLATE ELECTRODE
Electronic Water Purification (EWP) is a water purification technic which is widely developed right recently that relied on capacitive plate electrode, or commonly called CDI (Capacitive Deionization). Water purification method in this research is based on the coagulation of hardly soluble salts inf...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/19677 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Electronic Water Purification (EWP) is a water purification technic which is widely developed right recently that relied on capacitive plate electrode, or commonly called CDI (Capacitive Deionization). Water purification method in this research is based on the coagulation of hardly soluble salts influenced by electric field. The influence of direct current voltage to the conductivity of barium carbonate solution was investigated in this research. Voltage was varied from 1.5 V up to 7.5 V and the duration of electric current applied was varied from 5 minutes up to 30 minutes. Result showed that increasing of conductivity of water sample solution occured when electric current was applied. When the electric current was stopped, the value of conductivity dropped at a lower value of conductivity compare to at the initial value of conductivity before the electric current was applied. Trend and orderly pattern occur when electric current was applied at low voltage, namely 1.5 V to 4.5 Volt. The optimum condition in which the concentration of barium carbonate salts decrease in the sample occurs at 4.5 V with the duration of electric current applied was 20 minutes. This is shown through the decrease of conductivity of water sample containing barium carbonate salts. Variation of duration of electric current application led to significant change of conductivity value at 20 minutes time. The character of solution: pH 7.4, total conductivity 19 μS, total suspended solid (TSS) 0.975 ppm, total dissolved solid (TDS) 790 ppm. Result of metal analysis using atom absorption spectrocopy to the sample showed metal content of : Natrium content 9.950 ppm, Kalium 6.175 ppm, Ferrum 0.211 ppm, Calcium 29.263 ppm and Mangan 0.062 ppm. |
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