Browsing by Author "Andrio, David"
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Item Biokonversi Limbah Cair Pabrik Kelapa Sawit Dengan Bioreaktor Hybrid Anaerob Fasa Tunggal(2013-05-08) Ahmad, Adrianto; Bahrudin; Zul Amraini, Said; Andrio, DavidThe performance of anaerobic processes in the bioconversion of palm oil mill effluent into gaseous fuel is very dependent on the concentration of biomass. Effort to increase the concentration of anaerobic biomass can be done by using anaerobic hybrid bioreactor. The bioreactor used had 3 chambers, each divided for an up and down flow pattern and having a working volume of 2,5 m3. Several series of experiments were conducted with variable hydraulic retention time (HRT) of 1; 1,5; 2; 2,5; 3; 3,5; 4 and 5 day under room temperature conditions and continuous operation. This study uses two anaerobic hybrid bioreactors equipped with cell immobilization media. Media used in cell immobilization is a medium density form of solid palm oil mills waste, namely: empty fruit bunch and palm midrib. The results showed that the anaerobic hybrid bioreactor system was capable of converting single-phase oil palm mill effluent with a good performance, and high organic loading rate of COD removal efficiency of 84% for the bioreactor with palm midrib media and 88% for the bioreactor with empty fruit bunch media within bioconversion of one day and the stability of the bioreactor is relatively high so as to convert liquid waste into fuel gas.Item Bioreaktor Hybrid Anaerob Dua Fasa Untuk Biokonversi Limbah Cair Pabrik Kelapa Sawit(2013-05-08) Ahmad, Adrianto; Bahrudin; Zul Amraini, Said; Andrio, DavidAnaerobic hybrid bioreactor configuration in converting the liquid waste content of high organic materials can be done with a single-phase configuration and two-phase configuration. In a single-phase anaerobic hybrid bioreactor, methanogenesis and acidogenesis take place in a single bioreactor. As a result it is somewhat difficult to control pH and low process stability. To overcome these weaknesses, the anaerobic hybrid bioreactor uses two phases. Condition of operation two-phase anaerobic hybrid bioreactor was conducted at room temperature and continuous. The hydraulic residence time in the bioreactor tested for acidogenesis ranged from 0.3, 0.5, 0.7, 1 day with COD loading rate ranges from 150, 100, 75 dan 50 kg/m³-day, while the hydraulic residence time in the bioreactor for methanogenesis was 1 day with COD loading rate of 50 kg/m³-day. Testing at high organic loading is done by the variable residence time the same of methanogenesis and acidogenesis bioreactors i.e 0.5, 0.7, 1 day with COD loading rate ranges from 150, 100, dan 50 kg/m³-day. The results showed that the hydraulic residence time was optimum at 1.5 days (0.5 days in acidogenesis phase and 1 day in methanogenesis phase) with a COD removal efficiency of 84 % is capable of removing COD by 92 kgCOD/m3-day with the quality of effluent at COD 8,000 mgCOD/L and the content of nutrients (NPK), which is relatively good and the acquisition of specific methane gas by 46 m3/kgCOD removed. In addition, system stability is relatively good with the ratio of volatile fatty acids and alkalinity of 0,052.Item Performa Kompor Gasifikasi Champion Stove(wahyu sari yeni, 2019-01-09) Julita, Retna; Rionaldo, Hari; Andrio, David; Zulfansyah, ZulfansyahEnergy requirements for houshold cooking needs still depend on LPG (Liquefied Petroleum Gas). However, the lack of LPG supply and poor distribution are still obstacles in the community. Biomass waste is one of the alternative fuels for society so that cooking energy needs can be met. The objective of research is to study the effect of type of biomass and biomass size on the performance of gasification stoves by using a water boiling test (WBT) analysis. The experiments were carried out in batches with two WBT phases, namely cold start and hot start. The first stage was a cold start, where the tester uses a stove at room temperature an a number of fuels to boil 2.5 liters of water in a standard pan. The second stage was called the hot start test, where water is boiled with a hot stove with the aim of identifying the difference in the stove’s power when it’s cold and when it’s hot. In addition, the flame temperature and stove operating time are the performance parameters of the stove champion gasification stove. Water content for each biomass used is between 10-13%. The thermal efficiency of gasification stove was in the range of 19-36%. The result showed that combustion rate was in the range of 12-23 gr/minutes and fire power of 3-7 kWth. The maximum flame temperature produced by the stove is 806 oC using mahogany wood. The longest operating time using acacia wood was 38.22 minutes.Item UJI KlNERJA BIOREAKTOR HIBRIO ANAEROB DALAM MENGOLAH LIMBAH CAIR PABRIK KELAPA SAWIT DENGAN BEBAN KEJUT(2014-02-06) Ahmad, Adrianto; Bahruddin; Amraini, Said Zul; Andrio, DavidThe performance of anaerobic processes in the bioconversion of palm oil mill effluent into gaseous fuel is ve/y dependent on the concentration of biomass. Effort to increase the concentration of anaerobic biomass can be done by using anaerobic hybrid bioreactor. The bioreactor used had 3 chambers, each divided for an up and down flow pattem and having a working volume of 2,5 rrr. This study uses two anaerobic hybrid bioreactors equipped with cell immobilization media. Media used in cell immobilization is a medium density form of solid palm oil mills waste, namely: empty fmit bunch and palm midrib. Both bioreactors tested their performance by increasing feed flow rate unexpectedly by 50%, 100% and 150% under room temperature conditions and continuous operation. The results showed that the anaerobic hybrid bioreactor system was capable of converting single-phase oil palm mill effluent with a good performance, and testing with the feed Dow rate increased abruptly by 50%, 100%, and 150% indicates that the recovery time of the anaerobic hybrid bioreactor system is Single-phase of media empty fruit bunches