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Possibilities of utilizing waste from the production of cement-bonded particleboards in building materials
Bartoň, Andrej ; Vacula, Miroslav (referee) ; Bydžovský, Jiří (advisor)
This bachelor thesis deals with possible applications of waste created during cement-bonded particleboard in building materials production. The theoretical part of the thesis analyzes the individual components and processes in the production of cement-bonded particleboard, production processes during which the waste is produced, and the form and quantity the waste can be found in. The theoretical part focuses on the treatment of the various waste forms and their further use in modified or untreated form. In the practical part, the influence of the binder parts substitution on the cement matrix properties is verified. Fine loose waste from the cement-bonded particleboard was used for the sample production.
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Captived by Waste: An Ethnographic Study of the Activities Not Only Around the Bulk Container
Hájková, Zuzana ; Novotná, Hedvika (advisor) ; Zandlová, Markéta (referee)
Abctract In my diploma thesis I deal with actions that happen around bulk containers, that are intended to collect larger pieces of domestic waste and that are periodically placed in public space in Prague. I consider the bulk container as an actor, which leads us to particular practices of guarding, disposession and collecting stuff (from the container). I use method of multi-sited ethnography to investigate how the value of disposed objects change according to actions around container and according to change of the context in which it is newly placed. I identify several kinds of value, that are inscribed to wasted objects by their new owners. Waste can become valuable with regard to its economic potencial (as a thing or material that can be sold), with regard to possibility of its further practic use (as a household equipment or material), with regard to its estethic value (as an indicator of taste or as an artefact) or it can gain some specific kind of value in socially engaged context. It is possible to consider the bulk container as an actor of recyclation. I research how various groups of people that are concerned with reusing of waste, interact and how are their interactions, their relationships and their specific practices constitutive for reality of waste in surrounded area of the cotainer and...
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The impact of metal powder recycling on the porosity of parts produced by Selective Laser Melting
Sůkal, Jan ; Hudák, Radovan (referee) ; Paloušek, David (advisor)
Diploma thesis deals with the influence of recycling of powder steel 1.2709 on porosity of parts processed by SLM technology. Theoretical part of this thesis gives an overview of the influence of selected process parameters of this additive technology on the porosity of manufactured parts. The presence of pores in the material is the main cause of worse mechanical properties compared to conventionally manufactured materials. Since the advantage of this technology is the possibility of wasteless production, one of the possible causes of pore formation and degradation of properties of the powder material is due to standard recycling by means of sieving to remove the contaminants generated during the construction. This paper compares the porosity of parts produced by two different machines, analyzes the possible consequences of sieving on powder properties, establishes recommendations for setting the recycling process, and compares the degree of influence of process parameters on porosity.
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Low-energy recycling of poly(ethylen terephthalate) waste
Slabá, Jitka ; Beneš, Hynek (advisor) ; Cajthaml, Tomáš (referee)
This thesis deals with a new low-energy method of chemical recycling of poly(ethylene terephthalate) (PET) using natural oils as reagents and microwave irradiation to accelerate depolymerization. The results of experiments with PET waste and castor oil, when the reaction mixture was heated in microwave reactor, showed that a complete depolymerization of PET chain has occured. Optimal conditions for the depolymerization PET were established: wt. ratio of PET / castor oil = 1 / 9.7, when the molar ratio of ester bonds of PET / hydroxyl groups of castor oil = 1 / 2.7, catalyst : zinc acetate at wt 1% from the PET mass, reaction temperature ranging from 235 to 245řC and the reaction time 60 min. Decomposition experiments also showed, that microwave irradiation accelerated decomposition of PET. Depolymerization reactionin MW reactor was complete at 6x shorter reaction time than the decomposition in the classically heated reactor. The results of analysis showed that the resulting product,the recyclate, was composed of unreacted castor oil and polyol products, that contained partially or fully esterified structural unit of PET, which were ended by ester-linked units of castor oil.
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Features of Local Self-Support of Housing Development
Grmela, Daniel
The paper is the introductory to the topic of local self-efficiency of residential complexes. It provides the overview of basic elements which enables to assure the local self-sufficiency, including constructing materials, constructing works, electric power supplies, heating, water heating, drinking water management, utility water management and food supplies.
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Evaluation of industrial heritage
Navrátil, Oldřich ; Králová, Eva (referee) ; Zemánek, Václav (referee) ; Ryšková, Michaela (referee) ; Zemánková, Helena (advisor)
The main subject is evaluation of effective use in terms of care (not only within protection of monuments) in order to save and protect industrial heritage. Pointing out on critical issues connected with the end of production of traditional branches which played the key role in historical development of our cities. Nowadays abandoned buildings and sites are represented by memory of the place or its prosperity. New owners often don't share the positive approach to the industrial heritage, developers are seeking new sites, cities and inhabitants have developed new needs through the time. The work will demonstrate examples within European context and will make recommendations in monitoring and classification of industrial heritage to prevent undo able losses.
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Launching and Running a Company Using Project Management Methods
Šura, Jiří ; Szturc, Eugeniusz (referee) ; Smolíková, Lenka (advisor)
The thesis is focused on finding proper methods of business plan realisation, in order to launch an ecologic car wrecks disposal and recyclation company. Suggestions on how to conduct this project have been made according to IPMA competence baseline and analytic work has been done using MS Project tool. This thesis consists of theoretical information, analytical and practical part, focused on business plan description, and choice of a proper realisation methods.
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Analysis of packaging technology in the food industry and their impact on logistics operations
LÍSKOVEC, Petr
The main objective of work is to analyze the requirements for food packaging in terms of logistics operations with respect to the needs of consumers and on the basis of so revealed facts I tried to design consumer package, which fully complies with consumers, producers and also the needs arising from the logistics operations which relate to the package. The operational objective of the my work was to propose better solutions of goods fixation method that is based on widely used Euro-pallets. Because currently used shrink film can be applied only once so their use creates a significant amount of waste.
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Business plan for waste recycation
Vavřina, Radek ; Kovář, František (advisor)
Item of the bachelor work is a business plan. It includes external analysys, competition, market and marketng analysys. History of the company and management. There are budget, financial and logistic plans, costing of products, cash-flow plans and financial analysys with financial ratio indikators for next 5 years.
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