PRODUKSI BIOETANOL DARI BATANG TUA KELAPA SAWIT DENGAN AIR PANAS BERTEKANAN DAN <i>BALL MILL</i>
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Abstract
Bioethanol from oil palm trunk is one important source of energy to reduce greenhouse gas emissions and to avoid competition between the use for food and for energy as happens in other commodities. Pre-treatment of lignocellulosic biomass using sulfuric acid has high efficiency but requires high cost to neutralize the byproducts formed. Pre-treatment using hot compressed water and ball mill can be used to break down the structure and composition of lignocellulose so as to increase the rate of enzymatic hydrolysis and increase the sugar yield. Hydrolysis using an enzyme cocktail with hot compressed water and ball mill can each produce 210 mg of glucose at a temperature of 220°C and 200 mg of glucose for 120 minutes at room temperature per gram of oil palm trunk. Both of these processes are environmentally friendly and have a high efficiency in the production of bioethanol from oil palm trunks.
Keywords:Â bioethanol, oil palm trunk, ball mill, hot compressed water, hydrolysisÂ
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ABSTRAK
Bioetanol dari batang kelapa sawit adalah salah satu sumber energi yang penting untuk mengurangi emisi rumah kaca dan menghindari konflik kepentingan antara kebutuhan bahan pangan dan penggunaan energi sebagaimana terjadi pada komoditas lain. Pengolahan awal biomassa lignoselulosa menggunakan asam sulfat memiliki efisiensi yang tinggi tetapi membutuhkan biaya yang tinggi guna menetralisisr produk samping yang terbentuk. Pengolahan awal menggunakan air panas bertekanan dan ball mill dapat digunakan untuk memecah struktur dan komposisi lignoselulosa sehingga dapat meningkatkan laju hidrolisis enzim dan meningkatkan hasil gula. Hidrolisis menggunakan multienzim dengan air panas bertekanan dan ball mill masing-masing dapat menghasilkan 210 mg glukosa pada suhu 220°C dan 200 mg glukosa selama 120 menit pada suhu kamar per gram batang kelapa sawit. Kedua proses tersebut ramah lingkungan dan memiliki efisiensi yang tinggi pada produksi bioetanol dari batang kelapa sawit.
Kata Kunci: bioetanol, batang kelapa sawit, ball mill, air panas bertekanan, hidrolisis
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References
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