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Title: | Detoksifikasi Hidrolisat Asam dari Ubi Kayu dengan Metode Arang Aktif untuk Produksi Bioetanol Detoxification of Cassava’s Acid Hydrolyzate by Activated Carbon Method for Bioethanol Production |
Authors: | Setyaningsih, Dwi Yuliasih, Indah Juara, Saud Richy |
Keywords: | detoxification overliming activated carbon HMF ethanol |
Issue Date: | 2011 |
Publisher: | IPB (Bogor Agricultural University) |
Abstract: | Minyak mentah merupakan bahan baku utama untuk memenuhi kebutuhan energi, namun bahan ini berasal dari bahan baku fosil yang tidak terbaharukan. Oleh sebab itu, diperlukan suatu alternatif untuk memecahkan permasalahan kebutuhan energi tersebut. Salah satu alternatifnya adalah bioetanol. Bioetanol diperoleh melalui proses fermentasi menggunakan galur khamir Saccharomyces cerevisiae yang mampu mengkonversi gula sederhana seperti sukrosa, glukosa, fruktosa, maltosa dan rafinosa menjadi etanol. Pada penelitian ini bahan baku yang digunakan untuk menghasilkan bioetanol adalah ubi kayu. Hidrolisis ubi kayu untuk pembuatan bioetanol dapat dilakukan dengan metode hidrolisis asam ataupun hidrolisis enzimatis. Metode yang digunakan pada penelitian ini yaitu hidrolisis asam menggunakan H2SO4. Metode hidrolisis asam diharapkan bahan baku seperti pati, selulosa dan hemiselulosa dapat terhidrolisis. Cassava is one of natural resources for carbohydrate that also available for bioethanol production. Starch and fibers hydrolysis maybe conducted on acid condition. The restriction in acid hydrolysis is 5-hydroxymethyl furfural (HMF) and furfural formation, which inhibit yeast fermentation. This study applied two stages of detoxification, which are overliming and activated carbon adsorption methods for lowering HMF and furfural concentrations. In order to obtain tolerable amount in sugar solution, detoxification by activated carbon adsorption was done by concentration of 1%, 2.5%, 5% and 10% and duration of contact are 30 45 and 60 minutes. The results showed that overliming method decreased HMF and furfural concentrations 34.38% and 60.81%, respectively. Overliming followed by 5% activated carbon adsorption for 30 minutes produced the best sugar solution which has a lower HMF and furfural concentrations by 72.03% and 89.11%, respectively. Adsorption constants of HMF and furfural by 5% activated carbon were 0.044 g/min and 3,7 x 10-5 g/min, respectively. The concentration of ethanol produced was 5.00% (b/v) or 63.22% higher than obtained from detoxification by neutralization (NH4OH) which produced ethanol only 3.06%. |
URI: | http://repository.ipb.ac.id/handle/123456789/57241 |
Appears in Collections: | MT - Agriculture Technology |
Files in This Item:
File | Description | Size | Format | |
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2011srj.pdf Restricted Access | full text | 1.91 MB | Adobe PDF | View/Open |
ABSTRACT.pdf Restricted Access | Abstract | 316.04 kB | Adobe PDF | View/Open |
BAB I PENDAHULUAN.pdf Restricted Access | BAB I | 325.46 kB | Adobe PDF | View/Open |
BAB II TINJAUAN PUSTAKA.pdf Restricted Access | BAB II | 475.34 kB | Adobe PDF | View/Open |
BAB III METODOLOGI PENELITIAN.pdf Restricted Access | BAB III | 446.72 kB | Adobe PDF | View/Open |
BAB IV HASIL DAN PEMBAHASAN.pdf Restricted Access | BAB IV | 726.34 kB | Adobe PDF | View/Open |
BAB V KESIMPULAN DAN SARAN.pdf Restricted Access | BAB V | 281.46 kB | Adobe PDF | View/Open |
COVER.pdf Restricted Access | Cover | 288.33 kB | Adobe PDF | View/Open |
DAFTAR PUSTAKA.pdf Restricted Access | Daftar Pustaka | 356.12 kB | Adobe PDF | View/Open |
LAMPIRAN.pdf Restricted Access | Lampiran | 798.55 kB | Adobe PDF | View/Open |
RINGKASAN.pdf Restricted Access | Ringkasan | 323.61 kB | Adobe PDF | View/Open |
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