Biodigesters available in SSA for household, community, and institutional installations include variations of fixed dome, plug flow, and floating cover digesters.
That decision barred the use of fixed quotas in affirmative action plans.
In general, 3 types of digesters are used, which are the fixed dome, the floating cover digester, which was further developed to the ARTI biogas system, and the plug flow (or tube) system (Fig. 4).
The space agency NASA is pleased with the use of fixed-price contracts.
This study aims at bridging this gap and bringing additional insights to the scientific literature by investigating the sustainability of the Nepali type fixed dome digester within the context of rural Cameroon.
An innovative fixed dome biodigester design, which uses stabilised soil blocks instead of bricks, was identified as optimal for both Kenyan and Cameroonian rural households.
Biomethanation of poultry litter was studied in conventional fixed dome anaerobic digester (CFDAD) and high rate self mixed anaerobic digester (SMAD) for possible decentralized application in poultry farms generating litter in the range of 500 kg/day.
The aim was to compare the fixed dome and plastic tubular digester in terms of biogas production, cost and environmental impact, using the life cycle assessment methodology.
Plants with fixed dome, portable gas digesters, and small tanks/bags are the three most frequently used designs for biogas operating plants in Pakistan [60].
Savings were primarily made by reducing the focal length of the telescope – which allowed the use of a smaller dome – and relocating non-essential functions outside the dome to a simpler (and thus cheaper) rectangular annexe.
