Comparison of different energy crops for solid fuel production in Latvia
2012
Komlajeva, L., Latvia Univ. of Agriculture, Jelgava (Latvia) | Adamovics, A., Latvia Univ. of Agriculture, Jelgava (Latvia) | Poisa, L., Latvia Univ. of Agriculture, Jelgava (Latvia)
Linseed and fibre flax (Linum usitatissimum L.), hemp (Cannabis sativa L.), sunflowers (Helianthus annuus L.) and reed canary grass (Phalaris arundinacea L.) are grown in Latvia, and these bioenergy crops can be used for the production of solid fuel. Some oilseed crops have large perspective for biofuels. Sunflowers, canary seed and hemp have large biomass, but flax and sunflowers have high calorific value. The ash content is quite high in all plants sheave. Linseed can be used not only for obtaining linseed oil, but also for obtaining solid fuel (briquettes, linseed pellets) from straws. Within the framework of this research 2 sunflower varieties, 11 oil and 3 fibre flax samples, 2 reed canary grass varieties and 10 varieties of hemp 2009 and 2010 were studied in the years. The aim of the research was to evaluate the variety of plant biomass qualitative properties for production of solid fuel. All of these bio-energy plants were studied for the following parameters: biomass content, moisture content of dry matter, ash content of dry material, calorific value, sulphur and chlorine content. The quantity of plant biomass yield depends on many factors. Harmful substances in almost all plants make approximately from 0.15 to 0.22% of dry matter. The average highest calorific value at V=const for dried fuel at 105 deg C of sunflower dry matter was 20.6 MJ•kgE-1, and of fibre flax - 18.5 MJ kgE-1. The growing of hemp is beneficial to the environment, and hemp is also a good resource as a biofuel. By choosing suitable plants, high dry matter biomass solid fuel products can be obtained.
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