Prospect of Algal Biodiesel Production in Bangladesh: Overview from Developed Countries

Abstract

In recent decade's world's energy demands are fulfilled by coal, natural gas as well as petroleum though the price of oil is skyrocketing. Moreover, geopolitical tensions around the world may push it higher and demand also increasing as well. The world is faced two new problems severely like energy crisis and environmental degradation. If this continues, global recession is unavoidable and depletion of world reserve accelerates undoubtedly. To produce more fuels and energy more environmental hamper is done by the world that's why many investigations have been done to find out an environment friendly, economically competitive and technically feasible alternative source of energy. Very recently, Biodiesel is found to be more sustainable, non toxic and energy efficient technology which is biodegradable. Around 350 oil bearing crops rapeseed, soybean, jatropha, sunflower, linseed and coconut are the main sources of Biodiesel. But these edible material sources were proved to be unfeasible where demand is much higher than the production. But non-edible materials like algae is acceptable source of biodiesel not only in research but also many recently developed countries like China, Malaysia and India are accepted this technology in production and export. This paper provides an overview of algal biodiesel production at Bangladesh where fuel (oil, gas, coal) is too expensive day by day and to ensure a degradation free environment, alternative source of fuel (Biodiesel) is the time demanding decision for Bangladesh. Both mechanical and chemical methods of biodiesel production are analysed. In China, fundamental research on microalgae energy has a strong engineering and technological base. Several projects were taken from 2005 and algal biodiesel would be the giant source of energy within few years at China. National Biofuel policy of Malaysia increasing productivity and maximising returns in the sector of second generation biofuel technology like biodiesel from algae. In India, they started with jatropha based biodiesel and finally carried out extensive work to find out hydrocarbon at Indian water from hydrocarbon producing algae. For Bangladesh in fostering the development of biofuels industries, government have to play important role to adapt the technologies for their own condition, which raises issues of technology transfer. For both sustainable development and environmental protection, advanced technologies of biodiesel production is imperative for Bangladesh.

Potentiality of biodiesel and bioethanol production from feedstock in Bangladesh: A review

“…Stony, sandy and saline lands are most suitable for growing Castor. Castor oil seeds contain 67.7% oil [ 52 ]. The free fatty acid (FFA) content and viscosity have been found considerably higher such as 33.5% and 253 mm 2 /s, respectively [ 53 ].…”

“… Free fatty acids (FFA) of Jatropha oil are about 14.02%. Castor oil [ 52 , 53 ] The oil content of Castor seeds is about 67.7%. The free fatty acid (FFA) content of Castor seeds is 33.5%.…”

Potential of biodiesel as a renewable energy source in Bangladesh

“…And lastly, state of the art biodiesel production technology needs to be introduced as soon as possible. At present there is actually no working projects running in Bangladesh for producing biofuels [26]. But in future some initiatives should be taken care of.…”

Investigation of Flow Dynamics for a Microalgae Suspension in an Open Pond System

“…Generally three ingredients are needed for algae growth including Carbon-dioxide, Water and Sunlight [15]. Among them the sunlight is mandatory to support nutrients functioning properly [16]. To ensure the highest prod-uctivity from cultivation the sunlight reaching the suspension system must be kept within the tolerance level [17].…”