Publications

The main objective of this assignment is to select the most suitable and appropriate digester type for the proposed Biogas Pilot Project in Lao PDR, to prepare quantity and cost estimation of the selected model, to develop training materials, and to formulate a training programme.

Based on the above mentioned criteria, the following models have been selected for in-depth analysis:
• Chinese fix-dome model being installed in Laos under Chinese grant aid
• Vietnam Model (KT2A) being disseminated by Biogas Programme supported by SNV
• Cambodian Farmer's Friend Model (Modification of Indian Farmer's Friend Model) being
disseminated by National Biodigester Programme, Cambodia supported by SNV
• Nepalese GGC Model being installed under the framework of BSP-Nepal supported by SNV
• Model constructed in Laos under the framework of Canada-Thailand Trilateral Environment Subproject popularly known as Lao-GTZ model.

The following factors have been considered for evaluating the biodigesters under the study, assuming that the suitability of any biodigester in a given context depends mainly upon these factors:
• Climatic and geo-physical parameters
• Technological Parameters
• Affordability of potential farmers to install biodigester
• Purpose of the use of the biodigester products
• Performance of existing models, if any, in the local and/or regional conditions
• Quality and quantity of available feeding materials.

The report contains an evaluation matrix, and concludes that the GGC model being disseminated under the Biogas Programme in Nepal is the most suitable plant model for mass dissemination in Lao PDR.