Bioetanol merupakan salah satu baha

Bioetanol merupakan salah satu bahan bakar alternatif yang dianggap lebih ramah lingkungan. Jerami padi merupakan limbah yang selama ini tidak banyak dimanfaatkan, sehingga dalam waktu yang relatif panjang keberadaan limbah tersebut mendatangkan masalah tersendiri antara lain pencemaran. Jerami padi memiliki kandungan lignoselulosa yang cukup tinggi. Jerami padi memiliki kandungan lignosellulosa yang cukup tinggi yang dapat didegradasi menjadi bentuk yang lebih sederhana yaitu glukosa sebagai sumber pembentukan bioetanol. Metode yang digunakan untuk menghasilkan bioetanol yang lebih banyak yaitu dengan hidrolisis asam dengan variasi konsentrasi Asam Sulfat sebesar 3%, 4%, 5%, 6%, 7% pada temperatur hidrolisis 120oC. Waktu fermentasi yang digunakan selama 72 jam, 120 jam dan 168 jam. Jenis ragi pada proses fermentasi berupa ragi roti (Saccharomyces cereviseae) dengan kadar 20% dari berat bahan baku. Berdasarkan hasil metode kadar etanol tertinggi yang dihasilkan terdapat pada metode hidrolisis menggunakan konsentrasi 6%, temperatur 120oC dan waktu fermentasi selama 120 jam yaitu sebesar 15,100 %.

Results (English) 1:

Bioetanol is one of the alternative fuel are considered to be more environmentally friendly. Rice straw is a waste as long as it's not much utilized, resulting in a relatively long existence of the waste incurred a problem of its own pollution, among others. Rice straw has a fairly high content of lignoselulosa. Rice straw has a fairly high lignosellulosa content that can be didegradasi into a simpler form i.e. glucose as a source of formation of bioetanol. The methods used to produce more bioetanol i.e. acid by hydrolysis with Sulfuric Acid concentration variation of 3%, 4%, 5%, 6%, 7% at the temperature of hydrolysis to 120oC. The fermentation time used during 72 hours, 120 hours and 168 hours. This type of yeast in the fermentation process in the form of bread yeast (Saccharomyces cereviseae) and levels of 20% of the weight of the raw material. Based on the results of the methods of the highest levels of ethanol produced there are Etchant on methods using a concentration of 6%, temperature is 120oC and fermentation time during 120 hours, i.e. of 15.100%.

Results (English) 2:

Bioethanol fuel is one alternative that is considered more environmentally friendly. Rice straw is the waste that has not been used, resulting in a relatively long existence of such waste can create problems of its own among other contamination. Rice straw has a high content of lignocellulose enough. Lignosellulosa rice straw contains high enough to be degraded to a simpler form called glucose as a source of bio-ethanol formation. The method used to produce bioethanol more is by acid hydrolysis with sulfuric acid concentration variation of 3%, 4%, 5%, 6%, 7% at hydrolysis temperature of 120oC. Fermentation time is used for 72 hours, 120 hours and 168 hours. This kind of yeast in the fermentation process in the form of baker's yeast (Saccharomyces cereviseae) grading 20% ​​by weight of raw materials. Based on the results of the method produced the highest ethanol content contained in the hydrolysis method using a concentration of 6%, a temperature of 120oC and fermentation time during the 120 hours that is equal to 15.100%.