The technologies for the conversion of biomass which includes biomass from landscape conservation and maintenance work into bioenergy including electricity, heat and fuel can be classified into two categories: Thermochemical conversion and Biochemical conversion.
Biomass originating from landscape conservation and maintenance work is often underused. Compared to composting, use for energy production is rather limited. How can this feedstock be utilized? Which technologies, utilization pathways and strategies are most suitable?
Serra is a small mountain town of 3,000 inhabitants in the Region of Valencia on the Spanish Mediterranean coast. The municipality covers an area of 5,730 hectares, with 95% of this territory lying within the Sierra Calderona Natural Park and 85% being forest. Serra’s biomass management project began eight years ago as an environmental bet, turning green waste coming form gardening, into a solid fuel used in a 35 kw biomass boiler to heat the municipal nursery.
An overall scheme of conversion routes from biomass to bioenergy including their stage of development offers the report Renewable Energy Sources and Climate Change Mitigation written by the IPCC in 2012 or the report Biomass for heat and power by the International Energy Agency (IEA) from 2015.
Mostly, wood from landscape conservation work consists of bushes and has small dimensions. The processing of this biomass to woodchips is ideal because it allows the use as fuel in furnaces with mechanical auto feed. Woodchippers are available in different sizes and construction types.