کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
230331 1427380 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enzymatic synthesis of soybean biodiesel using supercritical carbon dioxide as solvent in a continuous expanded-bed reactor
ترجمه فارسی عنوان
سنتز آنزیمی بیودیزل سویا با استفاده از دی اکسید کربن فوق بحرانی به عنوان حلال در یک رآکتور کوچک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Soybean biodiesel production using SC-CO2 was investigated in a continuous expanded-bed reactor.
• Reaction of 90% was obtained at 200 bar, oil to ethanol molar ratio of 1:9, and substrate to solvent mass ratio of 1:3.
• Continuous enzymatic process of biodiesel using SC-CO2 showed to be a promising technology for large-scale purposes.

The enzymatic synthesis of soybean biodiesel using supercritical carbon dioxide (SC-CO2) as solvent in a continuous expanded-bed reactor was investigated. For this purpose, the commercial immobilized lipase Novozym 435 was used as catalyst and the variables investigated were the amount of enzyme (10–70 g), oil to ethanol molar ratio (1:9–1:21) and substrate to solvent mass ratio (1:1–1:3), pressure ranging from 100 to 200 bar at 70 °C. Reaction conversions as high as 90% were obtained at 200 bar, oil to ethanol molar ratio of 1:9, substrate to solvent mass ratio of 1:3 using 40 g of enzyme. The continuous process for enzymatic synthesis of biodiesel using SC-CO2 showed to be a promising technology for large-scale purposes. The proposed system demonstrated to be possible to obtain high conversion using lesser enzyme than in a packed-bed reactor, which might be an important advantage, due to the exhibited enzyme high-costs.

Influence of pressure on biodiesel conversion in the continuous expanded-bed reactor using SC-CO2 as co-solvent. Substrate to solvent mass ratio and soybean oil to ethanol molar ratio were kept at 1:3 and 1:9, respectively, using 30 g of enzyme and 70 °C. Legend: ●100 bar and substrate to solvent ratio of 1:3, ■ 148 bar and substrate to solvent ratio of 1:2, ♦ 200 bar and substrate to solvent ratio of 1:3.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 97, February 2015, Pages 16–21
نویسندگان
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