Analysis of heavy metal content in the dry matter of different energy crops
2015
Cubars, E., Rezekne Higher Educational Institution (Latvia). Research Inst. for Regional Studies | Poisa, L., Latvia Univ. of Agriculture, Jelgava (Latvia) | Noviks, G., Rezekne Higher Educational Institution (Latvia). Research Inst. for Regional Studies | Platace, R., Latvia Univ. of Agriculture, Jelgava (Latvia) | Bumane, S., Latvian Plant Protection Research Centre, Riga (Latvia)
The study shows results of research on heavy metal concentration in the biomass of common reed, hemp and reed canary grass. Research of common reed was performed in winter from 2010 until 2012 in 11 natural and artificial water bodies of Latvia. Samples of hemp and reed canary grass collected in the spring of 2009 and 2010 were analysed. Analysis of the collected samples of common reed allowed detecting heavy metal content (Cd, Pb, Cu, Ni, Fe) in the biomass. Studies of samples of hemp and reed canary grass revealed that Cd and Pb were present in the biomass. Basing on these results, suitability of the plant biomass for energy production was analyzed. Heavy metal content in the common reed biomass complies with the requirements of solid biofuel. Common reed from all the reed beds of Latgale region can be collected in one place and used for the production of fuel. Removal of common reed would help to reduce the concentration of heavy metals in natural waters and sediment of the reed beds. The content of heavy metals in the samples of hemp and reed canary grass was periodically analysed. It was found out that in some of the research samples the amount of heavy metals exceeded the maximum acceptable concentrations for fuel.
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