|
| |
|
|
Integrated Approach of Intelligent Asset Maintenance and Resource Conservation for Circular Economy
Chin, Hon Huin ; Ditl, Pavel (oponent) ; Hanika, Jiří (oponent) ; Kravanja, Zdravko (oponent) ; Klemeš, Jiří (vedoucí práce)
The rapid global industrialisation and urbanisation have placed heavy burdens on natural material resources consumption. For example, water scarcity and water pollution have been affecting human lives and economic developments for a long time, and resorting to clean fresh water has been becoming an important issue. The increasing irregular water supply and water pollution issues require more advanced water resources assessment methodologies to guide practical water use and management. Another well-known issue is the plastic waste accumulation in the option, which raises an alarming concern in achieving the optimal resources conservation network, striving towards the goal of Circular Economy. The Circular Economy concept not only focuses on resources conservation but also highlights the importance of maintaining and preserving the assets’ lifetime. This thesis is focused on developing advanced approaches for resources conservation and asset maintenance This thesis presents the extended analysis of Pinch-based methods in conserving the material resources for an industrial site. The major extensions involve the conceptual analysis on the resource conservation network that involves multiple qualities constraints, headers targeting and synthesis, and Total Site material conservation network synthesis. These methods serve as the graphical user interface for the users to select the preferable design options while ensuring the fresh resources consumptions are minimal. The study also extends the incorporation of different types of resources, such as heat and water, into the conservation network. The management issues such as resources management, subsidies and cost allocations are also studied for the eco-industrial site. Considering the asset’s lifetime prolongation, the long-term planning of a process or industrial site is incorporated in this study covering the assets’ age, depreciation and reliability. Process Integration tools are proposed to plan for the maintenance cost for a time period and workforce scheduling. The study is also extended to more analysis involving standby units and technologies investment for any process. Combining asset performance with resources conservation, the fault diagnosis and prognosis framework is applied to the Total Site/Eco-industrial park asset maintenance planning.
|
|
|
Integrated Approach of Intelligent Asset Maintenance and Resource Conservation for Circular Economy
Chin, Hon Huin ; Ditl, Pavel (oponent) ; Hanika, Jiří (oponent) ; Kravanja, Zdravko (oponent) ; Klemeš, Jiří (vedoucí práce)
The rapid global industrialisation and urbanisation have placed heavy burdens on natural material resources consumption. For example, water scarcity and water pollution have been affecting human lives and economic developments for a long time, and resorting to clean fresh water has been becoming an important issue. The increasing irregular water supply and water pollution issues require more advanced water resources assessment methodologies to guide practical water use and management. Another well-known issue is the plastic waste accumulation in the option, which raises an alarming concern in achieving the optimal resources conservation network, striving towards the goal of Circular Economy. The Circular Economy concept not only focuses on resources conservation but also highlights the importance of maintaining and preserving the assets’ lifetime. This thesis is focused on developing advanced approaches for resources conservation and asset maintenance This thesis presents the extended analysis of Pinch-based methods in conserving the material resources for an industrial site. The major extensions involve the conceptual analysis on the resource conservation network that involves multiple qualities constraints, headers targeting and synthesis, and Total Site material conservation network synthesis. These methods serve as the graphical user interface for the users to select the preferable design options while ensuring the fresh resources consumptions are minimal. The study also extends the incorporation of different types of resources, such as heat and water, into the conservation network. The management issues such as resources management, subsidies and cost allocations are also studied for the eco-industrial site. Considering the asset’s lifetime prolongation, the long-term planning of a process or industrial site is incorporated in this study covering the assets’ age, depreciation and reliability. Process Integration tools are proposed to plan for the maintenance cost for a time period and workforce scheduling. The study is also extended to more analysis involving standby units and technologies investment for any process. Combining asset performance with resources conservation, the fault diagnosis and prognosis framework is applied to the Total Site/Eco-industrial park asset maintenance planning.
|
|
| |
|
|
Usability of Extraction Techniques for Practical Applications.
Rousková, Milena ; Šabata, Stanislav ; Maléterová, Ywetta ; Hanika, Jiří ; Šolcová, Olga ; Stránská, M. ; Kaštánek, P. ; Bárnet, M. ; Svátek, A.
The aim of the study was the development of extraction procedures for the isolation of carotenoids, especially lutein, from medicinal plants (Calendula officinalis, Tagetes sp.), the obtaining of fragrances from Magnolia × pruhoniciana blooms, or the separation of waxes from Miscanthus sp. stalks.\n
Plný tet: rouskova_extrakce_abstrakt-v1 -  DOCX
Plný text: content.csg - DOCX
|
|
|
Acidic Hydrolysis of Waste Feather Biomass - Processes Scale-Up.
Hanika, Jiří ; Rousková, Milena ; Šolcová, Olga ; Šabata, Stanislav ; Jírů, M. ; Hůrková, K.
The paper present novel data on acidic hydrolysis of waste chicken feathersin presence of water solution containing carboxylic acid catalyst with the pKa value lower than 4, instirred batch reactors, in the temperature range from 114°Cto 150°C and at the pertinent vapour pressure of reaction mixture.The process was scaled-up from laboratory bench scale to pilot plant dimensions using batch high pressure autoclaves. Process conditions were applied according to patent application1. Knowledge of kinetic aspects of the featherhydrolysis and process parameters operation window are inevitable for asuccessful process scale up2,3.
Plný tet: ICCT_2019 ACIDIC HYDROLYSIS OF WASTE FEATHER BIOMASS - DOCX
Plný text: content.csg - DOCX
|
|
|
Preparation of Chitosan Based Films for Food Packaging Applications.
Soukup, Karel ; Cruz, G.J.F. ; Hanika, Jiří ; Jandová, Věra ; Hejtmánek, Vladimír ; Šolcová, Olga
In the present study, the effect both of the botanical source and proportion of starch produced from agricultural surplus on the microstructure properties of starch/chitosan/glycerin films was tested. Effective gas transport properties gas diffusion transfer was performed. Starch/chitosan/glycerol biodegradable films were obtained by casting method from giant squid (Dosidicus gigas) pen chitosan mixed with glycerin and starch. Four starch samples were prepared using exceeding or low quality biomass including broken rice grains, hard yellow corn surplus, banana surplus form exportation activity and low quality cassava in three different weight proportion (chitosan/starch) corresponding to 1/1, 2/1 and 5/1. Extraction of starch from the raw material was carried out by mixing it with a water solution of sodium disulfite (5 wt.%). Afterwards, the obtained suspension was filtered and then decanted at 5°C for 24 h. The obtained starch was washed repeatedly with distilled water and ethanol (96 vol.%). Finally, the starch samples were dried at 55°C for 48 h, crushed and sieved. It was found that the gas diffusion transport properties significantly depend on the starch source used. Differences in diffusion transport rates through the films prepared with different starches are related to the size and distribution of granules of starch in the films and/or the amylose conten.
Plný tet: SKMBT_C22019011614490 -  PDF
Plný text: content.csg - PDF
|
|
|
Simultaneous Hydrolysis of Proteins and Fats fro Waste Chicken Feathers.
Rousková, Milena ; Šolcová, Olga ; Šabata, Stanislav ; Jírů, M. ; Hůrková, K. ; Hanika, Jiří
The kinetics of the simultaneous hydrolysis of macromolecular proteins (keratin) and lipids (fat) from waste chicken feathers was investigated in this study. The perspective option pressure hydrolysis at elevated temperature was designed as one of the primary tasks within the research program in frame of the Competence Centre BIORAF, supported by the Technology Agency of the CR. The process development of simultaneous hydrolysis of proteins and lipids contained in the waste is focused on this potential alternative raw material for the preparation of valuable amino acids1 and proteins of low molecular weight. In this study, the acidic hydrolysis kinetics of the waste biomass was performed using a batch stirred bench scale autoclave at elevated temperature and pressure of inert atmosphere from 0.9 to 2.3 MPa. Produced hydrolysate was filtrated and subsequently analyzed using HPLC/MS method at the UCT Prague.
Plný tet: SKMBT_C22019011614371 - PDF
Plný text: content.csg - PDF
|
|
|
Volatile Substances Determination in Magnolia x Pruhoniciana Extracts.
Rousková, Milena ; Šabata, Stanislav ; Maléterová, Ywetta ; Hradecký, J. ; Hanika, Jiří ; Kaštánek, František ; Šolcová, Olga
Magnolia pruhoniciana is a unique hybrid originated by the crossing of Japanese M. obovata and American M. tripetala. It has been cultivated and grown since the 1950s in the Průhonice park, part of the Institute of Botany of the CAS. However, biologically active substances contained in intensely fragrant blossoms have not been\nsufficiently described, yet. From that reason the research was focused on extraction of the volatile substances from fresh blossoms using various solvents. Samples of magnolia blossom extracts revealed variously rich profiles of volatile substances, depending on the extraction agent used. To obtain information on volatile substances the analytical method GC/HRMS was employed. Magnolia extracts contained a large number of valuable substances such as alkaloids, coumarins, flavonoids, lignans and neolignans, phenyl-propanoids and terpenes have been identified. Obtained extracts possessed a typical magnolia fragrance, which confirmed that the obtained products could be potentially used for cosmetic applications.
Plný tet: SKMBT_C22019011614380 - PDF
Plný text: content.csg - PDF
|
|
| |
host ::
RSS.