کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6588187 | 1423227 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of an oil-degrading bacterial consortium in an airlift bioreactor: Insights into the mass transfer of the oil and oxygen
ترجمه فارسی عنوان
تولید یک کنسرسیوم باکتریایی تخریب کننده نفت در یک بیوراکتور هوایی: اطلاعات در مورد انتقال جرمی نفت و اکسیژن
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The production of oil-degrading bacteria in multiphase airlift reactors (ALBs) could be limited by the mass transport of both the gaseous and oil phases. In our study, the mass transfer rates of hexadecane and oxygen (HTR/OTR) were evaluated during the production of oil-degrading bacteria in a 3-L airlift reactor. To improve the HTR/OTR ratios during kinetics, a high initial concentration of hexadecane (77â¯gâ¯Lâ1) and constant superficial gas velocity (UG) in the range of 1.5-3.5â¯cmâ¯sâ1 were used. Under these conditions, all initial HTR/OTR were close to the stoichiometric consumption ratio (SCR, â¼0.28), which in turn decreased at the end of the culture until 0.173â¯Â±â¯0.013, 0.108â¯Â±â¯0.006 and 0.123â¯Â±â¯0.006 (g HXD) (g O2)â1 for UG of 1.5, 2.5, 3.5â¯cmâ¯sâ1, respectively. The evaluation of the Damköhler numbers suggested an enhancement of HXD mass transport that allowed for obtaining a maximum suspended solids (SS) production of 4.9-6.0â¯g SS (L h)â1. Since the operation of the ALB at high superficial gas velocities may lead to high power inputs, the variable UG technique was used for energy saving, finding similar maximum SS production (6.09â¯g SS (L h)â1) to that obtained at a constant UG of 2.5â¯cmâ¯sâ1 and an energy saving of 33.4%. The improvement in the HTR/OTR ratio during ALB performance allowed us to enhance the production of an oil-degrading microbial consortium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 192, 31 December 2018, Pages 507-515
Journal: Chemical Engineering Science - Volume 192, 31 December 2018, Pages 507-515
نویسندگان
Edgar N. Tec-Caamal, Angélica Jiménez-González, Sergio A. Medina-Moreno, Manuel Alejandro Lizardi-Jiménez,