Evaluation of Biogas Production from the Digestion and Co-Digestion of Animal Waste, Food Waste and Fruit Waste (Published)
The increased use of fossil fuels for energy consumption has causes environmental problems both locally and globally. The study investigates the anaerobic digestion in the production of biogas a renewable energy from the digestion and co-digestion of three different types of biodegradable wastes (cow dung, fruit waste and food waste) as an alternative for fossil fuels for energy consumption. This was carried out using a 25 Litres capacity plastic keg prototype biogas plant, constructed to investigate the anaerobic digestion in generating biogas. The experiment was batch operated and daily gas yield from the plant was monitored for 30 days. The slurry temperature and pH were also monitored and presented. The digester was charged with these wastes in the ratio of 1:1, of waste to water respectively. The mesophilic temperatures range attained within the testing period were 25 – 28.4 and a slurry temperature range of 24.4 -28.4. The result obtained from the biogas production showed that the co-digestion of cow dung and food waste produced the highest biogas of 164.8%, followed by the co-digestion of the three waste (cow dung, fruit waste and food waste) which has a percentage of 91.0%, co-digestion of cow dung and fruit waste (83.9%), cow dung of 79.8%, food waste of 77.4% and fruit waste of 76.4% within this retention period. During the digestion period, the volume of biogas production and the changes in pH indicate that the pH decreases as the retention period increases. These results showed that co-digestion wastes produce more biogas than when the wastes are ordinarily used for biogas production. The study recommends that biogas is not just a renewable energy source but also an appropriate way of managing waste, having potential to replace fossil fuel.
Keywords: Anaerobic Digestion, Biodegradable Wastes, Biogas, Fossil Fuel, Renewable Energy
Evaluation of Biogas Production from the Digestion and Co-Digestion of Animal Waste, Food Waste and Fruit Waste (Published)
The increased use of fossil fuels for energy consumption has causes environmental problems both locally and globally. The study investigates the anaerobic digestion in the production of biogas a renewable energy from the digestion and co-digestion of three different types of biodegradable wastes (cow dung, fruit waste and food waste) as an alternative for fossil fuels for energy consumption. This was carried out using a 25 Litres capacity plastic keg prototype biogas plant, constructed to investigate the anaerobic digestion in generating biogas. The experiment was batch operated and daily gas yield from the plant was monitored for 30 days. The slurry temperature and pH were also monitored and presented. The digester was charged with these wastes in the ratio of 1:1, of waste to water respectively. The mesophilic temperatures range attained within the testing period were 25 – 28.4 and a slurry temperature range of 24.4 -28.4 . The result obtained from the biogas production showed that the co-digestion of cow dung and food waste produced the highest biogas of 164.8%, followed by the co-digestion of the three waste (cow dung, fruit waste and food waste) which has a percentage of 91.0%, co-digestion of cow dung and fruit waste (83.9%), cow dung of 79.8%, food waste of 77.4% and fruit waste of 76.4% within this retention period. During the digestion period, the volume of biogas production and the changes in pH indicate that the pH decreases as the retention period increases. These results showed that co-digestion wastes produce more biogas than when the wastes are ordinarily used for biogas production. The study recommends that biogas is not just a renewable energy source but also an appropriate way of managing waste, having potential to replace fossil fuel.
Keywords: Anaerobic Digestion, Biodegradable Wastes, Biogas, Fossil Fuel, Renewable Energy
TO IMPROVE POWER FAILURE AND PROTECT SUSTAINABILITY OF THE ENVIRONMENT IN BANGLADESH BY THE RENEWABLE ENERGY (Published)
Developing countries are without compromising the environment, environmentally friendly, economic development of Bangladesh is a burning issue and requires a large supply of power. The use of fossil fuels is limited, solar, wind; biomass renewable energy sources such as hydro power limit option might be compensated for the other countries of similar power crisis in Bangladesh are not separated. From the power supply grid connected through three quarters (76%) of the people of Bangladesh. No doubt it is natural gas that has been limited to using a variety of purposes. Mean energy demand alarm output gap is expected to increase exponentially. Despite expectations that renewable energy sources are now in this country, you only have a 0.3% share of renewable energy in the total energy supply. In this article, not only, however, for future use in Bangladesh and the state of renewable energy that can be obtained in Bangladesh to review the renewable energy technologies. It will also try to show that the direction of future research, the use of renewable energy to meet future needs.
Keywords: Bangladesh, Electricity generation, Fossil Fuel, Renewable Energy, Sustainability