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Kompostování bioplastů
Kořínková, Aneta
The final work deals with research on the behaviour of various bioplastic materials placed in composting base under laboratory conditions and subsequent assessment of the phytotoxic effects of individual composts. Composting was carried out on the basis of modified standard ČSN EN 14045 and knowledge from standard ČSN EN 14046. The determination of chronic phytotoxic effects followed the modified standard ČSN EN 13432 and acute phytotoxicity was assessed using the Phytotoxkit test. Following completion of the composting process, decomposition was observed for the certified vegetable starch-based sample, two other samples without certification, but marked as 100% degradable, showed no evidence of decomposition. Various indicator organism growth inhibition values were observed, with chronic toxicity testing in the range of 3.4-20.9%, and phytotoxkit testing two of the samples showed a stimulating effect. Different bioplastic materials have achieved different results and represent a different level of potential environmental burden.
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Intensive composting technologies and their applications
Kuba, Petr ; Kučerík, Jiří (referee) ; Řezáčová, Veronika (advisor)
This bachelor thesis deals with intensive composting. The theoretical part of the thesis summarizes information about the composting process and the possibilities of sanitation. The ability to sanitize is essential in the treatment of potentially hazardous biodegradable wastes. The theory also includes information on the preparation of the stockpile, the appropriate composition of materials and the influence of other factors - temperature, aeration rate and turning. It also explains the differences between manual and intensive composting technologies, gives examples of technologies and explains their principles. Last but not least, the advantages of applying compost to the soil are mentioned. The experimental part is devoted to the Multiferm device and the tests of the composting process carried out on this unit. The tests aim to find the optimal parameters for the whole composting process and to ensure the sanitation process. Although the parameters are influenced by several factors, the compost sanitation process is achieved in one of the tests.
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Výzkum možností předcházení ukládání biologicky rozložitelných odpadů na skládky
Hlisnikovský, Lukáš
The purpose of this thesis is an elaboration of the methodology of composting accelerators exploitation with a vision to prevent a deposition of biologically waste on a landfill. The thesis consists of three main chapters. The description of the physical and chemical aspects of a composting process and the historical development of a composting technology is a content of the first chapter. Second chapter focuses on the up to date knowledge of compost accelerators. Third chapter describes and contain the methodology, results of experiments and discussion of advisability and suitability of the compost accelerators as a tool which could prevent a biological waste landfilling.
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