Concerns over the environment and the rising costs for energy and wastewater treatment have caused a resurgence of interest in anaerobic treatment and subsequent use of the biogas produced during this treatment of organic wastes as fuel. Biogas from faecal and landfill wastes has become a potential renewable energy source for both domestic and commercial usage especially in Ghana where a 50MW c...

Rural household biogas (RHB) systems are at a crossroads in China, yet there has been a lack of holistic evaluation of their energy and climate (greenhouse gas mitigation) efficiency under typical operating conditions. We combined data from monitoring projects and questionnaire surveys across hundreds of households from two typical Chinese villages within a consequential life cycle assessment (...

Anaerobic digestion (AD) of biowastes is one of the most common ways to produce methane-rich biogas, which has considerable potential to replace the fossil fuel used in multiple applications, such as vehicular transportation, internal combustion engines, cogeneration of heat and power systems and many other systems. Many companies are involved in the design and construction of anaerobic digesti...

The use of lignocellulosic biomass as a substrate in agricultural biogas plants is very popular and yields good results. However, the efficiency of anaerobic digestion, and thus biogas production, is not always satisfactory due to the slow or incomplete degradation (hydrolysis) of plant matter. To enhance the solubilization of the lignocellulosic biomass various physical, chemical and biologica...

The forest industry is of great importance to the Nordic countries in terms of exports and employment. Today the industry faces tough challenges related to future higher energy prices, increased competition for wood raw material, and a declining demand for traditional paper products. However, there are also possibilities related to the transition to a bio-based economy. This paper focuses on on...

Theoretical studies have assumed that the hydrostatic pressure in anaerobic digesters is likely to have a negatively influence on the effectiveness of the biochemical processes in the bioreactors and consequently on the biogas production. These assumptions made the authors approach this interesting topic and carry on experimental studies aimed to reveal the methanogens response on the hydrostat...

Energy recovery from Municipal Solid Wastes (MSW) generated in New Delhi is studied. The two options available viz., recovery of Biogas and energy due to the firing of MSW as fuel are reviewed. Continuous recovery of energy from the city’s MSW through Biogas needs a lot of planning with respect to the design, construction, operation and maintenance of landfills. The yield of Biogas with respect...

BACKGROUND Cooking and heating remain the most energy intensive activities among the world's poor, and thus improved access to clean energies for these tasks has been highlighted as a key requirement of attaining the major objectives of the UN Millennium Development Goals. A move towards clean energy technologies such as biogas systems (which produce methane from human and animal waste) has the...