Tadeáš Ochodek

Aerosols and the methods of determining the characteristics of nanoparticles

The purpose of this paper is to address the issue of aerosols by defining and dividing them in terms of their size, spatial localization and composition. The paper briefly deals with the issue of the origins and formation of aerosols. Further, it describes the trends in measuring nanoparticles based on their electric field mobility behavior, condensation, optical properties and aerosol particle acceleration in an air-stream.

Lump wood combustion process

The article deals with the combustion process for lump wood in low-power fireplaces (units to dozens of kW). Such a combustion process is cyclical in its nature, and what combustion facility users are most interested in is the frequency, at which fuel needs to be stoked to the fireplace. The paper defines the basic terms such as burnout curve and burning rate curve, which are closely related to the stocking frequency. The fuel burning rate is directly dependent on the immediate thermal power of the fireplace. This is also related to the temperature achieved in the fireplace, magnitude of flue gas losses and the ability to generate conditions favouring the full burnout of the fuel’s combustible component, which, at once ensures the minimum production of combustible pollutants. Another part of the paper describes experiments conducted in traditional fireplaces with a grate, at which well-dried lump wood was combusted.

Emission of nanoparticles during combustion of waste biomass in fireplace

Contamination of air by solid particles is serious problem for human health and also environment. Small particles in nano-sizes are more dangerous than same weight of larger size. Negative effect namely of the solid particles depends on (i) number, (ii) specific surface area (iii) respirability and (iv) bonding of others substances (e.g. PAHs, As, Cd, Zn, Cu etc.) which are higher for smaller (nano-sizes) particles compared to larger one. For this reason mentioned above this contribution deals with measuring of amount, and distribution of nanoparticles produced form combustion of waste city biomass in small combustion unit with impactor DLPI.

RETRACTED ARTICLE: Legal status of biochar in Europe

This article has been retracted following an investigation by the Editor-in-Chief of a complaint received against it. After consultation with the corresponding authors, both the Editor in Chief and corresponding authors have agreed that substantial portions of the text came from other papers without proper attribution. The article has therefore been retracted at the request of the Editor-in-Chief due to plagiarism.

Technical Aspects in Heat and Electric Energy Production by Waste Biomass Gasification in South Moravia Sawmill

The paper presents results of tests on a pilot plant using waste from the process timber. Experiments presented were obtained from the gasification of different biomass fuels, as well as various types of reactors. Presented biomass gasification technology shows the optimization process of converting fuel to its energy use in cogeneration unit. Installation requires few refinements of various gas purification components and the preparation of a long work to obtain the best possible economic effects. Abstrakt Přispěvek prezentuje výsledky testů na pilotnim zařizeni urcenem pro využiti odpadniho dřeva z pilařskeho průmyslu. Prezentovany experimenty byly ziskany ze zplyňovani různých paliv, v různých typech reaktorů. Prezentovana technologie zplyňovani biomasy ukazuje optimalizaci procesu přeměny pevneho paliva na plyn a jeho energeticke využiti v kogeneracni jednotce. Instalace vyžaduje vylepneni systemu cintěni plynu a připravu dlouhodobeho provozu pro ziskani co nejlepnich ekonomických výsledků.