provides a non-polluting and renewable source of energy. efficient way of energy conversion (saves fuel wood). saves women and children from drudgery of collection and carrying of firewood, exposure to smoke in the kitchen, and time consumed for cooking and cleaning of utensils.
produces enriched organic manure, which can supplement or even replace chemical fertilizers. leads to improvement in the environment, and sanitation and hygiene. provides a source for decentralized power generation. leads to employment generation in the rural areas.
household wastes and bio-wastes can be disposed of usefully and in a healthy manner. the technology is cheaper and much simpler than those for other bio-fuels, and it is ideal for small scale application. dilute waste materials (2-10% solids) can be used as in feed materials. any biodegradable matter can be used as substrate.
anaerobic digestion inactivates pathogens and parasites, and is quite effective in reducing the incidence of water borne diseases. environmental benefits on a global scale: Biogas plants significantly lower the greenhouse effects on the earth’s atmosphere. The plants lower methane emissions by entrapping the harmful gas and using it as fuel.
renewable source of energy. comparatively lesser pollution generating energy. helps in cleanliness in villages and cities. provides manure for the agriculture and gardens. there is tremendous potential to generate biogas energy. cheaper and reliable.
it can be generated from everyday human and animal wastes, vegetable and agriculture left-over etc. recycling of waste reduces pollution and spread of diseases. heat energy that one gets from biogas is 3.5 times the heat from burning wood.
because of more heat produced the time required for cooking is lesser. pressure on the surrounding forest and scrubs can be reduced when biogas is used as cooking fuel. more cost effective means of acquiring energy as compared to oil supplies. growing biomass crops use up carbon dioxide and produces oxygen.
loss of the organic waste for compost or fertilizer very limited in the quantity of electricity it can produce on the global scale little or no control on the rate of gas production encourage deflation of goods prices bring about high corruption level
pollution would be on the increase both sound, air, & water pollution food shortage obnoxious smells degasification increase the risk of evaporation of ammonia it contains some gases as impurities
agricultural wastes will not be available if the basic crop is no longer grown additional work is needed in areas land used for energy crops maybe in demand for other purposes some biomass conservation projects are from animal wastes & are relatively small & therefore are limited
research is needed to reduce the costs of production of biomass based fuels major cause of pollution expensive to install technology to process & recycle wastes use up too much land
maintaining a supply of the waste product in sufficient quantities to maintain energy production can be difficult burning produces greenhouse gases global warming