PENGEMBANGAN DAN OPTIMASI PROTOTIPE SISTEM REDUKSI KADAR COx DENGAN MENGGUNAKAN PLASMA LUCUTAN PIJAR

Abstract

The research of removal COx emission gas using non-thermal plasma has been carried out. In this research, plasma was produced in a reactor glow discharge corona with multi-points to plane configuration and wire to plane configuration that the distance between electrodes for both of tipe reactors were 7 mm. Emission simulation gas CO2 and additives gaseous (Ar, NH3, vapor H2O) were injected in the reactor and the mix of gaseous was changed to become phase plasma using DC voltage with maximum 10 kV. In phase plasma, the spicies of plasma such as; ions, energetic free radicals and energetic electrons were created in the reactor. Ions and energetic free radicals were entranced in reaction and this condition can to remove emission gas CO2 and it produced other compounds. The result of this research show that system with multi-points to plane configuration, with inter electrodes distance is 0.7 cm and oparation voltage of 6 kV reduced CO2 with decomposation efficiency (DE) about 60% On the other hand, system with wire to plane and knife to plane configuration at the same inter electrodes distance and operation voltage has DE = 85%. From spectroscopy analysis (FTIR) and anion-cation analysis, we obtained that aerosole has been produced in high temperature reaction (plasma condition) was NH4(CO3). Telah dilakukan penelitian-penelitian tentang preduksian gas emisi CO, dengan menggunakan plasma non-temiik. Dalam penelitian ini plasma dibangkitkan dalam sebuah reaktor lucutan pijar korona dengan konfigurasi multi-titik ke bidang (multi-points to plane configuration) dan kawat bidang (wire to plane configuration) yang jarak antar elektroda 7 mm. Bersama-sama dengan gas emisi CO2, gas aditif yang terdiri dad Ar, NH3, H2O uap dimasukkan ke dalam reaktor dan campuran gas tersebut diubah menjadi plasma non-termik dengan bantuan tegangan DC maksimum 10 kV. Dalam kondisi plasma, di dalam reaktor terbentuk ion-ion, radikal-radikal bebas energetik dan elektron energetik. Ion-ion dan radikal¬radikal bebas sating bereaksi dan mampu mengubah senyawa emisi CO2 menjadi bentuk senyawa lain. Hasil pereduksian menunjukkan bahwa untuk reaktor multi-titik ke bidang dengan jarak antar elektroda 0,7 cm dan tegangan operasi 6 kV mampu mengasilkan pereduksian 60 %, sedangkan untuk reaktor kawat bidang dan pisau bidang dengan jarak antar elektroda dan tegangan operasi yang sama mampu mereduksi sampai 85 %. Dad analisa spektroskopi (FTIR) dan analisa kation-anion didapatkan bahwa aerosol yang terbentuk dad hasil reaksi suhu tinggi (kondisi plasma) adalah senyawa NH4(CO3).