Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6638275 | Fuel | 2014 | 5 Pages |
Abstract
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 mâ2 dâ1. 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 sâ1and 36.7214 kJ molâ1 respectively. Thermodynamic activation parameters ÎGâ , ÎHâ and ÎSâ were measured, which suggest that the process was endothermic, irreversible and spontaneous.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Veeramuthu Ashokkumar, Ramasamy Rengasamy, S. Deepalakshmi, A. Sivalingam, Pandian Sivakumar,