Roorkee:
Researchers at the Indian Institute of Technology (IIT) Roorkee have come up with a new method for production of biodiesel from microalgae (‘kai’ in indi), which they claim is low-cost and more effective.
Elaborating on the research, professor BR Gurjar, head of centre for transportation systems of the institute said, “Microalgae are considered to be one of the superior resources for production of biodiesel due to the species’ ability to produce higher biomass and accumulate more lipids, which are the target material for biodiesel production. To increase the rate of production and to make it cost-effective, we used heterotrophic cultivation of microalgae using low-cost organic carbon-based feedstock such as agro waste, molasses, municipal and industrial wastes. This resulted in an automotive quality in biodiesel production.”
The cost of feedstock and expense of operation are two crucial cost components in biodiesel production. The cost of feedstock alone accounts for about 60–70% of the total cost while the cost of the substrate is also a huge factor. The method employed by IIT Roorkee considerably reduces the cost of the substrate.
IIT Roorkee researchers used the algal-based crude glycerol in the production, which is a low-cost organic carbon source and the main byproduct of the biodiesel production process. Crude glycerol works as a media feedstock for cultivation of microalgae, thereby reducing the cost of the substrate to a negligible point.
Research showed that the use of crude glycerol enhanced the accumulation of the total lipid in the algal cells. Various analyses after the production of the fuel proved it was better in terms of quality and quantity. The fuel was also comparable to the existing vehicular fuel standards.
“The method used by the team is beneficial to the environment as there is no biodiversity loss attached to it. Moreover, it minimizes waste production by using materials like agro-waste and is able to produce an enhanced quantity and quality of biodiesel,” said Richa Katiyar, an associate in the research project.
source: http://www.timesofindia.indiatimes.com / The Times of India / News> City News> Bareilly News / by Tapan Susheel / TNN / November 03rd, 2017