|
|
Use of Sodium Bicarbonate for Flue Gas Treatment in Small Scale.
Zach, Boleslav ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Václavková, Šárka ; Moško, Jaroslav ; Brynda, Jiří ; Punčochář, Miroslav
The trend of reduction of landfilling can lead, especially in areas with low population density, to the need to build new waste-to-energy capacities in the form of small units. However, flue gas treatment in small scale has to be sufficiently simple to decrease capital costs and allow the construction of such facilities. For that reason, the possibility of one-step dry flue gas treatment at compromise conditions was investigated as well as the limitation of flue gas composition.\n\n
Fulltext:  PDF
|
|
| |
|
| |
|
| |
|
|
Breaking of Rod-shaped Model Material during Compression.
Kulaviak, Lukáš ; Pěnkavová, Věra ; Růžička, Marek ; Punčochář, Miroslav ; Zámostný, P. ; Grof, Z. ; Štěpánek, F. ; Schöngut, M. ; Havlica, Jaromír
The breakage of a model anisometric dry granular material caused by uniaxial compression was studied. The bed of uniform rod-like pasta particles (8 mm long, aspect ratio 1:8) was compressed (Gamlen Tablet Press) and their size distribution was measured after each run (Dynamic Image Analysing). The compression dynamics was recorded and the effect of several parameters was tested (rate of compression, volume of granular bed, pressure magnitude and mode of application). Besides the experiments, numerical modelling of the compressed breakable material was performed as well, employing the DEM approach (Discrete Element Method). The comparison between the data and the model looks promising.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22018011012170 - PDF
|
|
|
Powder Rheology of Nanocrystalic Particles.
Kulaviak, Lukáš ; Pěnkavová, Věra ; Růžička, Marek ; Punčochář, Miroslav ; Zámostný, P. ; Grof, Z. ; Štěpánek, F. ; Schöngut, M. ; Havlica, Jaromír
Pigments are mostly nanometric powder of anisometric particles providing complex rheological behaviour. The interparticle forces of grains (> 100 μm) are based on direct contact, which is mainly influenced by the particle size and shape. On the other hand powder (< 4 μm) and especialy nanometric powder (< 100 nm) is influenced mainly by electrostatic charges and by moisture (respectively by the liquid and solid bridges forming). However the morphology affects the surface area and thus the distribution of surface charge and\nthe moisture content on/in single particle. Last but not least, it is also good to know the history of the powder, i.e. the effect of aging and the memory of the powder on the strength of the material. The nanometric powder TiO2 was chosen as a demonstration material and measuring device was FT4 powder rheometer.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22018011012520 - PDF
|
|
| |
|
| |
|
|
Complexity of analytical sampling procedures for persistent toxic compounds. Water Sampling by Semipermeable membrane device and Data Analysis.
Ocelka, Tomáš ; Ševčík, Jiří (advisor) ; Vrána, Branislav (referee) ; Punčochář, Miroslav (referee)
Charles University Faculty of Natural Sciences Department of Analytical Chemistry Summary of Doctoral Thesis STUDY AND DEVELOPMENT OF SAMPLING METHODS FOR PERSISTENT ORGANIC COMPOUNDS METHODOLOGY OF DATA ANALYSIS FOR POPS ASSESSMENT Dipl. Ing. Tomas Ocelka Prague 2010 Complexity of analytical sampling procedures of toxic compounds. Water Sampling by Semipermeable membrane device and Data analysis. Summary of Doctoral Thesis. TABLE OF CONTENTS 3 TABLE OF CONTENTS Section Page TABLE OF CONTENTS .....................................................................................3 1 INTRODUCTION/THEORY ..................................................................5 2 EXPERIMENTAL PART..........................................................................7 A. Semipermeable membrane device (SPMDs).................................7 B. Used biota, bioassays.....................................................................8 C. Sampling protocol ..........................................................................8 D. Analytical methods.........................................................................9 E. Statistical and gnostic methods .....................................................9 F. Applications.................................................................................. 11 3...
|
|
| |
guest ::
RSS feed.