Chemical Engineering

Permanent URI for this collection

https://repository.unri.ac.id/handle/123456789/87

Browse

Browsing Chemical Engineering by Subject "Anaerobic"

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
    Kombinasi Pengolahan Anaerob dan Membran Ultrafiltrasi Berbahan Polipropilen Untuk Proses Pengolahan Limbah Cair Kelapa Sawit
    (2013-03-21) Talis, Salmiati; Daud Syarfi; Ahmad Adrianto
    Palm oil wastewater of PTPN V potentially contaminating environment if we can’t handle correctly. The result of analysis showed that acidic pH’s value 4.0, the value of COD is 30,000 mg/L and TSS value is 8635 mg/L. This value is not in accordance with the decree of minister Environment number 51 of 1995 for pH values were in the range 6-9, for a COD value is 500 mg/L and TSS value is 300 mg/L. Research was done to reduce the value of that parameters to fit the provisions of the Government of Indonesia. Process carried out is anaerobic process. Problems that arise in this process is the washout of biomass so that was developed by combining anaerobic digestion process with membrane ultrafiltration. Anaerobic process carried out several stages, the seeding stage, acclimatization, startup and operational. pH values obtained in the final stage anaerobic process that is equal to 8.7, COD is 5000 mg/L with an efficiency of COD is 66.67% and TSS is 1510 mg/L. The results of the anaerobic process is passed through a membrane with pressure variation is 1.6 bar , 1.8 bar, and 2.0 bar. The best pressure is 1.8 bar with a pH value is 8.5, the value of COD is 2000 mg/L with an efficiency COD is 60% and TSS is 20 mg/L with an efficiency of TSS is 98.67%
  • No Thumbnail Available
    Item
    Pengaruh Laju Pembebanan Organik terhadap pH dan Asam Asetat dalam Bioreaktor Hibrid Anaerob pada Pengolahan Limbah Cair Pabrik Sagu
    (2012-10-24) Wimin, Dewi; Ahmad Adrianto; Chairul
    Sago demand continues to rise along with the development of processing industries that use raw sago starch. Today’s national sago production reached 400,000 tons / year. In the production of starch required 20,000 liters of water per ton of sago, so it can be expected that the processing of sago require 21 000 kilolitres of water per day, of which 94% of the water will be liquid waste. Sago wastewater has high organic matter composition, when thrown into water it will degrade water quality and contaminate the environment. One of sago waste water treatment is by using hybrid anaerobic bioreaktor. Acetic acid content and pH is one factor affecting the performance of bioreactor. The purpose of this study was to determine the effect of organic loading rate on pH and the concentration of acetic acid by seeing the parameters of pH and acetic acid as well as determining the optimum loading rate on the formation of acetic acid. The research was conducted by using a hybrid anaerobic bioreaktor mediated the stone as a medium growth of microorganisms. Volume of work used in this study amounted to 10 L by varying the organic loading rate is 12.5: 16.7, 25 and 50 kg COD/m3 day. These results indicate that the optimum organic loading rate of 50 kg COD/m3 days with acetic acid concentration of 76,8 mg / L and pH of 6.13. Thus a hybrid anaerobic bioreaktor with the media of stone is capable to treat sago waste water that contains high organic.
  • No Thumbnail Available
    Item
    Penyisihan Chemical Oxygen Demand (COD) Limbah Cair Pabrik Sagu Menggunakan Bioreaktor Hibrid Anaerob Pada Kondisi Start Up
    (2012-10-23) Lestari, Azian; Ahmad Adrianto; Zahrina Ida
    Industrial development was followed by an increase of sago starch sago wastewater generated. In producing sago starch takes 20,000 liters of water per ton of starch, which is 94% water would be liquid waste sago. Sago effluent has COD (Chemical Oxygen Demand) to 100,000 mg / l. These conditions will have a negative impact on the environment if not managed properly. One way to lower the COD content by using hybrid anaerobic bioreactor. Conditions Start up is one of the important conditions in wastewater using hybrid anaerobic bioreactor, because this happens to reach the steady proliferation of microorganisms. This study aims to review the condition of the start-up of hybrid anaerobic bioreactor COD parameter and observing the resulting biogas. The research was carried out with a flow rate of 2 l / day at room temperature. The results showed that the COD removal efficiency of the largest obtained 90,45% with pH 6.2 as well as the operation of the biogas production of 14 982 ml / day. The results of this study indicate that the start-up of hybrid anaerobic bioreactor lasts for 59 days.
  • No Thumbnail Available
    Item
    PENYISIHAN KANDUNGAN PADATAN LIMBAH CAIR PABRIK SAGU DENGAN BIOREAKTOR HIBRID ANAEROB PADA KONDISI START-UP
    (2012-10-31) Fadhli, Taufiq Ul; Ahmad Adrianto; Yelmida
    Sago Liquid waste increased with the development of sago industry in Indonesia. Sago liquid waste is acidic, foul-smelling and has a high concentration of solids. Solids is one of the parameters in the identification of a wastewater pollution levels. Sago mill waste water solids can be organic and inorganic solids. Organic solids can generally be degraded by microorganisms, while inorganic solids difficult degraded by microorganisms. Therefore, it is necessary sago wastewater treatment before discharge into water bodies or water. Handling of solid sago mill waste water can be done using the anaerobic bioreactor of media anaerobic hybrid rocks. The success of this bioreactor in treating wastewater depends on the strategy of start-up bioreactor. This study aimed to isolate and get the reduced rate of sago wastewater solids content at start-up conditions. The results showed that the start-up of hybrid anaerobic bioreactor lasts for 58 days with WTH 2 L / day, operating conditions at room temperature and pH of 6.2 to 7.1 average. TS removal efficiency by 63,87%, TVS by 43,75%, TSS by 60,63% and 61,76% VSS. This shows that the hybrid anaerobic bioreactor mediated in both rock solid content aside sago mill waste water