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The Application of Catalytic Ozonation Technique using UV and Granular Activated Carbon (GAC) for Eliminating in Waste Phenol, COD, and 1,1,2,2-Tetrachloroethane Ikhsandy, Ferry; Bismo, Setijo; Karamah, Eva Fathul
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 7, No 1 (2022): EDISI MARET 2022
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v7i1.2854

Abstract

Process eliminating compounds of phenol, Chemical Oxygen Demand (COD), and 1,1,2,2-tetrachloroethane using catalytic ozonation technique with catalyst Granular Activated Carbon (GAC) combination with Ultra Violet (UV) light emission performed in this study. This study aimed to obtain the effectiveness of applications catalytic ozonation technique using system configuration Ozone/GAC and Ozone/UV/GAC to eliminate waste phenol 1,1,2,2-tetrachloroethane COD with circulation time (0, 15, 30, 45, 60, and 120 minutes). The wastewater was derived from the wastewater Laboratory of Polyester Industrial in Bogor. The results were analyzed, comprised of COD with Ferrous Ammonium Sulphate (FAS) method, phenol using aminoantipirin method, and 1,1,2,2-tetrachloroethane with Gas Chromatography-Flame Ionization Detector (GC-FID) method. The result of study shown that the configuration of the Ozone/ UV/GAC with an initial concentration of phenol 58,00 mg/L, COD 72,00 mg/L and 1,1,2,2-tetrachloroethane 32,96 mg/L resulted in the percentage of eliminating phenol 57,76%, COD 66,67% and 1,1,2,2-tetrachloroethane 98,74% while the configuration of Ozone/GAC with an initial concentration of phenol 55,00 mg/L, COD 72,00 mg/L and 1,1,2,2-tetrachloroethane 37,70 mg/L resulted in percentage of eliminating phenol 50,91%, COD 55,56% and 1,1,2,2-tetrachloroethane 100%ABSTRAKProses penyisihan senyawa fenol, Chemical Oxygen Demand (COD) dan 1,1,2,2-tetrakloroetana menggunakan teknik ozonasi katalitik dengan katalis Granular Activated Carbon (GAC) yang dikombinasikan dengan emisi sinar Ultra Violet (UV) dilakukan dalam penelitian ini. Tujuan dari penelitian ini untuk memperoleh efektivitas aplikasi teknik ozonasi katalitik menggunakan sistem konfigurasi, yaitu: Ozon/GAC dan Ozon/UV/GAC dalam penyisihan limbah fenol, COD dan 1,1,2,2-tetrakloroetana dengan waktu sirkulasi (0, 15, 30, 45, 60, dan 120 menit). Limbah cair yang digunakan berasal dari limbah cair Laboratorium Industri Polyester di daerah Bogor. Analisis yang dilakukan meliputi analisis COD dengan metode Ferro Ammonium Sulfat (FAS), analisis Fenol dengan menggunakan metode aminoantipirin dan analisis 1,1,2,2-tetrakloroetana dengan metode Gas Chromatography-Flame Ionization Detector (GC-FID). Setelah dilakukan penelitian, diketahui bahwa konfigurasi Ozon/UV/GAC dengan konsentrasi awal fenol 58,00 mg/L, COD 72,00 mg/L dan 1,1,2,2-tetrakloroetana 32,96 mg/L menghasilkan persentase penyisihan senyawa fenol 57,76%, COD 66,67% dan 1,1,2,2-tetrakloroetana 98,74% sedangkan konfigurasi Ozon/GAC dengan konsentrasi awal fenol 55,00 mg/L, COD 72,00 mg/L dan 1,1,2,2-tetrakloroetana 37,70 mg/L menghasilkan persentase penyisihan senyawa fenol 50,91%, COD 55,56% dan 1,1,2,2-tetrakloroetana 100%.
Effect of Corn Cob Cofiring Ratio Variation on Flue Gas Emissions in a 350 MW Coal-Fired Power Plant Pujiyatmoko, Erwin; Karamah, Eva Fathul
Jurnal Rekayasa Kimia & Lingkungan Vol 20, No 2 (2025): Jurnal Rekayasa Kimia & Lingkungan (December, 2025) In Press
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v20i2.46158

Abstract

Coal-fired power plants are major contributors to greenhouse gas (GHG) emissions in Indonesia, particularly carbon dioxide (CO2), sulfur dioxide (SO2), and nitrogen oxides (NOx). This study analyzes the effect of varying corn cob biomass co-firing ratios on emission levels and thermal performance in a 350 MW subcritical coal-fired unit. Real operational data were obtained from both 100% coal combustion and a 5% corn cob co-firing field test, which were then used to calibrate an Aspen Plus V14 simulation model for higher biomass blending scenarios at 10% and 15%. Results show that increasing the biomass ratio reduces CO2 emissions from 307.44 T/h to 261.33 T/h and NOx from 215.03 to 158.15 mg/Nm, due to biomasss lower carbon and nitrogen content. In contrast, SO2 emissions increased from 206.54 to 310.05 mg/Nm at 15% co-firing, likely due to the biomass sulfur content and altered combustion behavior. Thermal efficiency declined as Specific Fuel Consumption (SFC) rose from 0.638 to 0.753 kg/kWh and Net Plant Heat Rate (NPHR) from 3191.25 to 3766.76 kCal/kWh, mainly due to the lower calorific value and higher moisture content of biomass. Although the Basic Production Cost (BPP) increased from Rp 583.80/kWh to Rp 663.48/kWh, it remains below national residential tariffs, ensuring profitability. The findings suggest that corn cob co-firing up to 15% is technically and economically viable, with potential to support Indonesias energy transition and emission reduction goals if supported by appropriate operational and policy frameworks.