IMPACT OF LASER ON MICROORGANISMS IN THE DIGESTATE
DOI:
https://doi.org/10.17770/etr2017vol1.2648Keywords:
laser, digestate, bacteriaAbstract
At the biogas plant total of 40 digestate samples have been collected and investigated. The microbiological composition of digestate has been analysed before and after laser processing with wavelength λ 445 nm with power 2 - 4 W. Salmonella spp. has not been stated in any of the samples, Escherichia coli and Enterococcus spp. amount does not correspond Eiropean Union regulation R142/2011 requirements in any of the investigated samples; Staphylococcus aureus has been stated in 24 samples out of 40. By decreasing laser scanning speed and increasing power, the total number of microorganism colonies in digestate has decreased.Downloads
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