Study and review of biogas experience in Bangladesh and other countries

Abstract

With large amount of population (density 1113.98/km2) Bangladesh demand a large amount of energy. But its economic condition is not enough strong to yield and endure with demand of energy for increasing population and raising economy. Alternative source of energy especially biogas technology has been initiated in Bangladesh for many years. Bangladesh is blessed with congruous geographical location (200 34/ N – 260 38/ N, 880 01/ – 920 41/ E) for renewable energy and perfect weather condition for Biomass energy. It is a low lying and tropical country and its temperature is very suitable for the fermentation of organic materials throughout the year. But in this country biogas technology is not popular as it was presumed. This study is conducted with the desire to investigate the reasons why biogas technology is not yet popular as like as solar home system (SHS) in both grid and off grid areas in Bangladesh. The expense of per unit PV electricity is ultimately higher than biogas scheme. Poor people can‘t bear the expenditure for such technology but it is often seen that they have a solar panel on their roof. Bangladesh is eager to invest huge amount of money in fossil fuel based electricity plant and buy electricity from neighbour countries also. This study does not trying to discover the lacking of other renewable energy sources rather an attempt to investigate the experience of biogas technology in Bangladesh. Gradually Bangladeshi people is adopting renewable energy, it is now required to accelerate this adoption to complement the requisite amount of energy for extended population and blooming economy .This review work focuses on the drawback of biogas technology on the basis of opinion and speculation of who use and who does not use biogas. In addition, people will get benefits from improved plant growth and crop yields through bio-slurry use. The financial benefits are likely greater when switching from liquid petroleum gas (LPG) to biogas as opposed to changing from collected wood to biogas. In this way it will be possible to make a hit to economy and environment.