BIOGAS RENEWABLE ENERGY FROM RURAL AND INDUSTRIAL WASTES FOR FUTURE BETTER LIFEProf. Dr. Ir. Nonot Soewarnoa2nd International Seminar on Fundamental and Application of Chemical Engineering 2014 (ISFAChE 2014)aDepartment of Chemical Engineering, Sepuluh Nopember Institute of Technology, Surabaya 60111, Indonesia01/29

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BIOGASAs An Alternative Energy3/29

THE ANAEROBIC PROCESSHydrolysis phase(C6H10O5)n + nH2O n(C6H12O6)Acidogenesis phaseC6H12O6 2CH3CHOHCOOH (Lactic acid)C6H12O6 CH3CH2CH2COOH (Butyric acid) + 2CO2 + 2H2OC6H12O6 CH3CH2COOH (Propionate acid) + CO2 + CO + 2H2OC6H12O6 CH3COOH (Acetic acid)

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RURAL WASTE BIOGASRural waste (cow dung)6/29

RURAL WASTEFig. 1(a) Schematic diagram of bioreactor include with gas holder7/29

RURAL WASTEFig. 1(b) Schematic diagram of skeleton of bioreactor8/29

RURAL WASTEFig. 2(a) Photo of bioreactor tank include with gas holder9/29

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Reactor5,000 LiterFlow Rate1,125 Liter/DayCirculation Ratio1 : 0.5 ~ 1COD Load3 Kg/m3.Day

RURAL WASTEFig. 2(b) Photo of circulation and manometer system11/29

RURAL WASTE3.1 Biogas calculation for the rural waster (cow-dung)12/29

Number of cows5.00Weight of cow-dung per cow 20.00kgCow-dung per day 100.00kg

Influent for ratio cowdung:water = 1:2300.00Kg or LitreCOD influent 30,000.ppmkg COD influent/day9.00kg/dayCOD reduction of 80%7.20kg/day1 kg COD = m3 biogas0.40

RURAL WASTE3.1 Biogas calculation for the rural waster (cow-dung)13/29

m3 biogas produced2.88m3/day1 m3 biogas6,500.00k calorik calori biogas/day18,720.00k calori/day1 litre kerosin10,080.00k caloriKerosin/day1.86litre/day1 litre kerosin14,000.00IDRIDR kerosin/day26,000.00IDRIDR kerosin/year9,490,000.00IDR

INDUSTRIAL WASTE3.2 Biogas calculation for the ethanol industry14/29

Alcohol per day120,000.00litreWaste water per day1,080,000.00litreCOD influent120,000.00Ppmkg COD influent/day129,600.00kg/dayCOD reduction of 80%103,680.00kg/day1 kg COD = m3 biogas0.40m3 biogas produced41,472.00m3/day1 m3 biogas6,500.00k calori

INDUSTRIAL WASTE3.2 Biogas calculation for the ethanol industry15/29

k calori biogas/day269,568,000.00k calori/day1 litre kerosin10,080.00k calorikerosin/day26,742.86litre/day1 litre kerosin14,000.00IDRIDR kerosin/day374,400,000.00IDR30,688.52US$/dayIDR kerosin/year131,040,000,000.00IDRyear

Fig. 3. Photoes of ethanol plant with anaerobic process and ethanol plantINDUSTRIAL WASTE16/29

Fig. 3. Photoes of ethanol plant with anaerobic process and ethanol plantINDUSTRIAL WASTE17/29

INDUSTRIAL WASTEFig. 4. Photoes of vinasse and anaerobic process for handling vinasse 18/29

INDUSTRIAL WASTEFig. 4. Photoes of vinasse and anaerobic process for handling vinasse 19/29

ACKNOWLEDGEMENTSThe authors would like to thank the Sepuluh Nopember Institute of Technology (ITS) and the Indonesian Directorate General of Higher Education (DIKTI) for the financial supports.20/29

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CONCLUSIONWe can handling waste water from rural or industrial waste and generate biogas.Biogas from domestic waste can be used for 2 households in Indonesia.Biogas from ethanol industrial waste with capacity 120,000 L/day could generate approximately 41,472 m3/day or 270,000,000 kCal/day, equal U.S. $ 31,200/day.28/29

ACKNOWLEDGEMENTSThe authors would like to thank the Sepuluh Nopember Institute of Technology (ITS) and the Indonesian Directorate General of Higher Education (DIKTI) for the financial supports.29/29

THANK YOU

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