کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6376030 | 1624835 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Combined ethanol and methane production using steam pretreated sugarcane bagasse
ترجمه فارسی عنوان
تولید اتانول ترکیبی و تولید متان با استفاده از بخار پیشگامان بخارپز شده با بخار
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کلمات کلیدی
LSDSSFHMFTOC5-Hydroxymethylfurfural - 5-هیدروکسی متیل پورفورالLime - آهکEthanol - اتانولAcetic acid - اسید استیکFormic acid - اسید فرمیکSugarcane bagasse - باگاس نیشکرBio-energy - بیو انرژیanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceTotal solids - جامدات جامدvolatile solids - جامدات فرارleast significant difference - حداقل تفاوت قابل توجهیSeverity factor - عامل شدتMethane - متان Second generation bioethanol - نسل دوم بیوتکنولAnaerobic digestion - هضم بیهوازیsimultaneous saccharification and fermentation - واکسیناسیون و تخمیر همزمانWis - وایPretreatment - پیش تصفیهTotal organic carbon - کل کربن آلی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Efficient energy production relies on complementary use of crop residues, to enhance the amount of energy obtained per unit biomass. In this frame, sugarcane bagasse (SB) was pretreated and the resulting slurry and liquid fraction served, respectively, for simultaneous saccharification and fermentation (SSF) at high solid concentration (15%), and anaerobic digestion (AD). More specifically, SB was subjected to twelve pretreatments to enhance fiber deconstruction and subsequent energy output: steam explosion alone (195 °C for 5, 10 and 15 min), after impregnation with 0.4% and 0.7% Ca(OH)2, and at 205 °C for the same three times after 0.7% Ca(OH)2 addition. After pretreatment, enzymatic hydrolysis was carried out on washed solid fraction; glucose and xylose were determined on this fraction as well as residual liquid fraction. On this latter, inhibitors (acetic and formic acid, furfural and 5-hydroxymethylfurfural) were also determined. Based on high glucose yield in enzymatic hydrolysis, three pretreatments were selected for SSF of the slurry. The same pretreatments underwent AD of the liquid fraction. Inhibitors augmented at increasing time and temperature, although never achieved critical levels. Lignin removal (range, 17-38%) was enhanced by lime addition, whereas increasing temperature and time did not contribute to delignification. Glucose yield in washed solid fraction varied accordingly. SSF exhibited the highest ethanol yield with mild lime addition (60% of theoretical) vs. steam alone (53%). However, modest yields were generally evidenced (average, 55%) as a result of high viscosity, especially in the case of high lime dose in SSF at high solid concentration. Combined energy yield (ethanol, methane and solid residue) proved lime effectiveness as catalyst in steam explosion of SB, beside two intrinsic advantages: low water consumption in SSF at high solid concentration, and the possibility of lime removal from downstream effluents through carbonation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 74, 15 November 2015, Pages 255-262
Journal: Industrial Crops and Products - Volume 74, 15 November 2015, Pages 255-262
نویسندگان
Lorenzo Capecchi, Mats Galbe, Lorenzo Barbanti, Ola Wallberg,