Tikslas. Ištirti alksnių, kaip atsinaujinančių energetinių augalų, džiovinimo procesą. Objektas. Du skirtingi džiovinimo būdai: konvekcinis ir aukštatemperatūrinis džiovinimas. Smulkinti ir nesmulkinti alksniai. Lietuvoje ką tik nupjautos medienos drėgnis gali svyruoti nuo 50 % iki 70 % drėgnio. Siekiant išvengti ir apsaugoti medieną nuo mikrobiologinių veiksnių ir savaiminio kaitimo, laikymo procesas turi būti kontroliuojamas ir medieną būtina išdžiovinti iki 8-15% drėgnio. Pateikto darbo literatūros apžvalgoje išanalizuota miško kirtimo atliekų naudojimo kurui galimybės, bei laikymo ir sandėliavimo parametrai. Ištirtas dvejopas alksnio kirtimo atliekų džiovinimas, panaudojant skirtingas džiovinimo temperatūras, bei tiekiamus oro filtracijos greičius. Nustatyta, kad džiovinant alksnius aktyviąja ventiliacija džiovinimas yra ekonomiškiausias ir labiausias atitinka natūralias gamtos sąlygas. / Purpose of the study. Investigate alder as a renewable energy crop, drying process. The object of the work. Two different drying methods: convection and high temperature drying. Alder chips and whole wood. Lithuania freshly cut wood moisture content can range from 50 % to 70 % moisture. In order to prevent and protect the wood from microbiological factors and self-heating, the storage process has to be controlled and the wood must be dried to a moisture content of 8 – 15 %. Literature of work review analyzed the logging waste for fuel options, and storage parameters. Investigated dual alder cutting waste drying, using different drying temperatures. It was found that drying Alder with active ventilation is the most economical and most natural drying method.

Legionella pneumophila is a bacterium which can be found in fresh water and causes Legionnaires’ disease, which can be deadly for humans depending on the condition of the infected individual. The bacterium is a gram-negative rod and can withstand severe conditions such as high temperature. Therefore, various treatments including heat and acid treatment are performed on the water to inhibit interfering microorganisms. However, to examine a larger volume of water, the water needs to pass through a filter, which can be very time consuming, and there are various variables that have a negative impact on the filtration speed. The aim of this study was to examine these variables and find the fastest setup for detection of L. pneumophila. To filtrate the water, a manifold with funnels, where you put the water, is used, and the manifold is connected to a pump. Under the funnels, steel frits are placed, and the filter is placed on the steel frits. To examine the fastest setup, different manifolds, pumps, filters, and settings were investigated by timing the water running through in the different settings. A new way of sterilization, that does not damage the steel frits was tested, and the recovery of bacteria was examined on the filters with the top filtration speed. In conclusion, the most efficient setup is the Cyclopore (GE Healthcare Life Sciences) filter, the pump from KNF and the manifold MBS1 (Whatman), and the new way of sterilizing should be used to reduce the damage of the steel frits.