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?

Lignocellulosic biofuel pathways on national and European scale

Lignocellulosic biofuel pathways on national and European scale

This article describes woodchips as feedstock for transportation fuels and their pathway in catalytic fast pyrolysis. This pathway is based on a technology developed by CERTH (Centre for Research and Technology Hellas), Royal DSM and Neste.

Feedstock conversion properties and suitable conversion technologies

Feedstock conversion properties and suitable conversion technologies

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.

Machines to produce woodchips from biomass of landscape conservation and maintenance work (LCMW)

Machines to produce woodchips from biomass of landscape conservation and maintenance work (LCMW)

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.

Results of pruning as feedstock for biofuel production on European scale

Results of pruning as feedstock for biofuel production on European scale

Can LCMW biomass from fruit, wine and olive pruning make a substantial contribution to the economic production of biofuels on European scale?

Run of the BioBoost cost optimization – Feedstock prunings- fast pyrolysis – region: Germany

Run of the BioBoost cost optimization – Feedstock prunings- fast pyrolysis – region: Germany

The use of road-side LCMW biomass as the feedstock in Germany. Description of local biomass prunings and process of the fast pyrolysis.

Conversion pathways on local scale – Biogas production potential from grass of the greenGain model regions CZ-LCMW 4 and CZ-LCMW 5

Conversion pathways on local scale – Biogas production potential from grass of the greenGain model regions CZ-LCMW 4 and CZ-LCMW 5

Since the availability of grass from LCMW activities is of discontinuous nature, the ensilage of grass may be required to ensure continuous availability of substrate. Use of grass as co-substrate in biogas plants running with agricultural substrates is recommendable.

Conversion pathways on local scale – Herbaceous biomass in biogas plants

Conversion pathways on local scale – Herbaceous biomass in biogas plants

When aiming to utilize LCMW biomass as feedstock for an energy supply chain a number of technical, environmental, socio-economic and legal factors have to be taken into account. During task 4.2 of the greenGain project key success criteria were identified to match the LCMW feedstock types with the suitable conversion technologies and define LCMW pathways.

Conversion pathways on local scale – Suitability of biomass from hedge and tree rows on banks LCMW for conversion technology

Conversion pathways on local scale – Suitability of biomass from hedge and tree rows on banks LCMW for conversion technology

For the most promising energetic utilisation pathway in greenGain the processing to wood chips and a further combustion via a Combined Heat and Power plant (CHP) was chosen and further assessed.

Arno Langenfeld @Flickr.com

Potential yearly energy supply from biomass of maintenance of hedge- and tree rows on banks in Friesland

When aiming to utilize LCMW biomass as feedstock for an energy supply chain a number of technical, environmental, socio-economic and legal factors have to be taken into account. During task 4.2 of the greenGain project key success criteria were identified to match the LCMW feedstock types with the suitable conversion technologies and define LCMW pathways.

Estimated potentials of feedstock availability in the greenGain model regions and suitable conversion technologies

Estimated potentials of feedstock availability in the greenGain model regions and suitable conversion technologies

A number of thermochemical and biochemical technologies are available for the conversion of biomass into energy and fuel. The suitability of biomass as feedstock for a conversion process depends upon its composition and heating or calorific value.

Possible biochemical conversion technologies to utilize Biomass from LCMW

Possible biochemical conversion technologies to utilize Biomass from LCMW

Utilisation of unused biomass resources from grassland areas and landscape management in Europe, e.g. roadside green cuttings or endemic plants that suppress biodiversity via anaerobic digestion has been explored in INTERREG IV B funded COMBINE-Converting Organic Matters from European urban and natural areas into storable bio-Energy project.

Possible thermochemical conversion technologies to utilize Biomass from LCMW

Possible thermochemical conversion technologies to utilize Biomass from LCMW

For conversion of woody biomass, the Netherlands based Biomass Technology Group (BTG) has designed a fast pyrolysis plant based on a rotating cone reactor developed by the University of Twente.

Serra, Biomass, Energy and Employment

Serra, Biomass, Energy and Employment

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.