Essay on Biogas (Gobar Gas) - Biology Discussion.

The farmer’s handbook “Implementation guide for small-scale biogas plants” This guideline presents the basics of biogas production and utilization and describes the essential steps for developing a biogas project (from the idea to plant operation).

The science teachers asked them to write an essay about the biogas technology. This was marked and used as part of their continuous assessment results. The students had gathered their paper wastes in class. Volunteer students were assigned to cut the paper, mix in the cow manure and put the mixture into the biogas digester.

The study investigated biogas potentials of six different plants, Cow rumen liquor, Cowpea, and poultry waste. The Slurry used was prepared by mixing 60 g of plants sample with 20 g of chicken.

In the case of a biogas plant that is directly connected to the stable, it is advisable to install the mixing pit deep enough to allow installation of a floating gutter leading directly into the pit. Care must also be taken to ensure that the low position of the mixing pit does not result in premature digestion.

To come to a successfully constructed biogas plant, the mason should not only respect the dimensions as indicated on the drawing but also follow the correct construction method. Hereunder, in a step-by-step fashion, the right construction method of the 2047 design GGC model biogas plant is given. 1. Different Sizes of Plant.

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Biogas is a mixture of methane (CH 4), carbon dioxide (CO 2), hydrogen (H 2) and hydrogen sulphide (H 2 S). It contains about 65% methane which as an excellent fuel. Biogas is obtained by the anaerobic fermentation of animal and plant wastes in the presence of water.

This is my attempt at constructing a medium sized Biogas plant for home use as well for demonstration to students and others using a 750 liter capacity tank as digester and a 500 liter capacity tank as a gas holder, a floating type gas holder method. I have provided easy to understand step-by-step instructions on how to build the plant.

It is a major aspect of current climate change, and has been demonstrated by direct temperature measurements and by measurements of various effects of the warming. Global warming is the increase of average world temperatures as a result of what is known as the greenhouse effect. This Working model on environment for science exhibition is best.

The TK-BIOGAS school bio gas kits are available from Kemtec (Pennsylvania, USA) This kit includes a biogas digester, a one gallon biogas collection bag, all necessary fittings and tubing, a check valve, a combustion nozzle assembly, and safety equipment for one person (goggles, gloves, and apron).

The few commercially run biogas plants in Botswana e.g. Cumberland Hotel (uses kitchen leftovers) and the Richmark (uses chicken waste) have shown high success, with high capital returns. The plants are economic viable, and lead to alternative energy sources, away from coal generated electricity.

In the case of a family-size biogas plant intended primarily as a source of energy, implementation should only be recommended, if the plant can be expected to cover the calculated energy demand. Information about the economic evaluation of a biogas plant can be found in the section on Costs and Benefits.