Pengaruh Laju Alir Umpan dan Arus Recycle Terhadap Proses Fermentasi Bioetanol Menggunakan Integrated Aerobic-Anaerobic Baffled Reactor (IAABR)

M. Margono, Muhammad Azis Rigit Manfaat, Afianto Suryo Hutomo, Aida Nur Ramadhani
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Abstract

Abstrak. Bahan bakar berbasis minyak bumi merupakan sumber energi utama yang digunakan di dunia. Namun, ada masalah di masa depan dengan cadangan minyak bumi yang menurun. Oleh karena itu beralih ke sumber energi alternatif adalah suatu keharusan. Penelitian ini bertujuan untuk mengetahui pengaruh laju alir umpan dan laju alir daur ulang terhadap proses fermentasi bioetanol menggunakan baffled reactor aerob-anaerobik terintegrasi, khususnya terhadap produksi bioetanol dan konsumsi gula. Proses start up dijalankan dengan volume kerja medium 25 L selama 54 jam inkubasi. Aliran daur ulang bervariasi menjadi 5 L/jam dan 10 L/jam ketika feed rate 12,6 L/jam. Dalam percobaan lain, laju aliran umpan dijalankan pada 5 dan 12,6 L/jam ketika laju aliran daur ulang adalah 10 L/jam. Sampel kaldu diambil secara berkala untuk pengukuran konsentrasi bioetanol, populasi ragi dan sisa gula konsumsi. Percobaan menghasilkan konsentrasi bioetanol tertinggi sebesar 14% v/v pada limbah reaktor. Ini lebih tinggi dari proses tanpa daur ulang media proses. Namun demikian, tidak ada perbedaan pengaruh laju alir daur ulang 5 L/jam dan 10 L/jam terhadap produksi bioetanol. Abstract. Petroleum based fuel is the main energy source used in the world. However, there is a future problem with the declined petroleum reserves. Therefore changing to alternative energy resource is a must. This reserach was to investigate the effects of feed flowrate and recycle flow rate on bioethanol fermentation process using integrated aerobic-anaerobic baffled reactor, especially on bioethanol production and sugar consumption. Start up process was run with working volume of 25 L medium for 54 hours incubation. The recycle flow varried into 5 L/h and 10 L/h when the feed rate was 12.6 L/h. In other experiments, the feed flow rate  was run at 5 and 12.6 L/h when the recycle flow rate was 10 L/h. The broth samples were taken out periodically for measurements of bioethanol concentration, yeast population and residual sugar of consumptions. The experiments results in the highest bioethanol concentration of 14% v/v at the effluent of reactor. It is higher from the process without recyle of process medium. Nevertherless, no difference effect of the recycle flow rate of 5 L/h and 10 L/h on the bioethanol production. Keywords: Bioethanol, Baffled Reactor, Feed, Recycle
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抽象。以石油为基础的燃料是世界上主要的能源。然而,未来存在一个问题,石油储备正在减少。因此,转向替代能源是必须的。这项研究的目的是确定诱饵流速和回收流速对生物乙醇的发酵过程的影响。启动过程是在25升(5.5加仑)的培养皿中运行,潜伏期为54小时。当速率为12.6 L/小时时,回收率将分为5 L/小时和10 L/小时。在另一项实验中,当回收率为每小时5到12.6 L时,鱼饵流速度是每小时10 L。肉汤样本定期提取,以测量酵母的浓度、摄入糖的剩余成分。试验产生反应堆废物中14%的生物乙醇浓度最高。这比没有循环处理介质的过程要高。然而,径流对生物乙醇的生产没有影响。抽象。石油基础燃料是世界上使用的主要能源。悬浮,退化石油储备有一个未来的问题。在改变替代能源之前,这是必须的。这一研究是研究生物乙醇活性循环率和循环率的作用开始诉讼是根据25个L介质的体积运行54小时。当利率是12.6 L/h时,循环流会减少到5 L/h。另一方面,flow利率在5点和12点6分运行,当循环偏速速率是10 L/h。样本的质量是周期性的,以补充生物乙醇的集中、叶人口和剩余糖分。在最高度的生物乙醇集中的14%的浓度的反应器。它比加工过程高,没有再加工介质。在生物乙醇生产中,再循环值的5 L/h和10 L/h没有什么影响。基准词:生物乙醇,缓冲反应器,饲料,循环
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