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Ultrasound assisted direct transesterification of algae for biodiesel production: Analysis of emission characteristics

Namasivayam Manickam (A), Nivetha Elumalai Selvamani (A), and Gopinath K. P. (B)

(A) Department of Chemical Engineering, Adhiparasakthi Engineering College, Melmaruvathur, India.
(B) Faculty of Chemical Engineering, SSN College of Engineering, Chennai, India.

Carbon – Science and Technology 6/2 (2014) 384 – 387.

© Applied Science Innovations Private Limited, India.

Full Text (OPEN ACCESS) : CST-90.pdf

Keywords: Biodiesel, algae, Ultrasound, emission characteristic, fuel, Biofuel, Green Chemistry

Abstract: Recently, the algae-for-fuel concept has gained renewed interest with energy prices fluctuating widely. Due to some restrictions over the oil extraction from algae, direct transesterification may be considered as a good alternative. In this study, to improve the performance of direct transesterification, ultrasound induction was carried out. A sonicator probe was used to induce the direct transesterification of Cladophora fracta, a freshwater macro alga, which contains 14 % lipid on dry biomass basis. Due to ultrasonication about 25 % increased biodiesel yields were obtained and the biodiesel thus prepared was analyzed for emission characteristics. The analysis results showed that Cladophora biodiesel emits 18 mg/L of CO whereas petroleum diesel emits 50 mg/L. Similarly, the emission of NOx and particulate matter also were reduced to a considerable level. The Cladophora is a suitable source of biodiesel by ultrasound assisted direct transesterification in industrial level in the future.



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