Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"secondary raw materials"”.
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Alkali-activated materials and Geopolymers from wastes and secondary raw materials: innovative and sustainable building products
L'abstract è presente nell'allegato / the abstract is in the attachment
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Designing two-stage recycling operations for increased usage of undervalued raw materials
… enable recyclers to incorporate low-quality secondary materials into higher quality finished products. Despite technological development, the use of these materials in the re-melting stage to produce final alloys is still limited. This thesis addresses this issue by raising the following …
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Analytical study and cost modeling of secondary aluminum consumption for alloy producers under uncertain demands
A series of case studies on raw materials inventory strategy for both wrought and cast aluminum alloy productions were conducted under recourse-based modeling framework with the explicit considerations of the demand uncertainty compared to the traditional strategy based on point forecast of future …
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Controlling dark fermentation of agro-industrial waste for valued organic acids production
… be properly managed and a potential resource of secondary raw materials. In this context, the present Ph.D. thesis will pay attention to the possibility to produce valuable mixtures rich in organic acids through controlled dark fermentation (DF) of sheep cheese whey (CW). The main goal is the …
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Recovery and valuation of ultrafine marble dust contained in waste slurries deriving from carbonatic natural stones processing plants
… and reusing different types of waste materials deriving from different industries. The goal of the investigation is to identify potential uses for the sawing sludge as an alternative to its disposal in dumps, a practise no compatible with the concept of sustainable development. By …
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Hydrothermal processing of biogenic residues in Germany
… the more efficient use of biogenic residues as secondary raw materials. However, high water containing biomasses are still a problem since they need an energy- and cost-intensive pre-treatment for many conversion processes, which can make their use uneconomical. Hydrothermal processes (HTP) seem …
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Návrh správkové hmoty se sníženou elektrickou impedancí
Tato bakalářská práce se zaměřuje na návrh nového složení správkové hmoty na silikátové bázi s cílem snížit elektrickou impedanci. V teoretické části budou popsány základní pojmy potřebné k pochopení tématu práce, jako jsou pojmy související s vodivostí, silikáty, kompozity a obecně správkovými …