کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6638275 461156 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mass cultivation of microalgae and extraction of total hydrocarbons: A kinetic and thermodynamic study
ترجمه فارسی عنوان
کشت جمعی از میکروالگوها و استخراج کل هیدروکربن ها: یک مطالعه جنبشی و ترمودینامیکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
In this present investigation, the biofuel alga Botryococcus braunii (B. braunii) was mass cultivated in 10 m2 open raceway pond at batch mode. This study was mainly focused on the kinetics and thermodynamics approach for total lipid and hydrocarbon extraction. At batch mode cultivation the alga produced highest dry biomass of 23 g m−2 d−1. The algal cells were harvested by autoflocculation method and dried. Different pre-treatment methods, solvents systems and optimization of extraction parameters were carried out in the dry biomass containing moisture less than 1 wt%. This reveals ultrasonication combined with chloroform: methanol, extracted maximum of 24.2 wt% total lipid and hydrocarbon. Temperature effects (308-338 K) on kinetics were investigated. The extraction follows first order kinetics and their rate constants and activation energy were determined as 3.0431 s−1and 36.7214 kJ mol−1 respectively. Thermodynamic activation parameters ΔG≠, ΔH≠ and ΔS≠ were measured, which suggest that the process was endothermic, irreversible and spontaneous.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 119, 1 March 2014, Pages 308-312
نویسندگان
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