|
|
Material Flows and Environmental Impacts of s-WEEE in the Czech Republic
Polák, Miloš
This thesis is a comprehensive study describing and quantifying material flows of waste electric and electronic equipment (WEEE) in the Czech Republic; specifically the material flow of small waste electric and electronic equipment (s-WEEE) as well as representative substances. The studied material flows were estimated regarding aspects of the environmental impact. The End-of-Life mobile phone is seen as a typical representative of s-WEEE ; therefore material flows of mobile phones are described in this thesis as well. To put it in concrete figures, approximately 124 thousand tons of WEEE from households originated in the Czech Republic in 2010, where each inhabitant got rid off 4 pieces of WEEE in average. Further, total production calculating also consumer-like WEEE from companies and institutions was around 141 thousand tons in 2010. S-WEEE present around 15% from the total amount of WEEE originating in 2010; however it is more than 80% as regards the number of pieces. Despite of that fact the recycling potential of Au for instance is slightly higher by s-WEEE than by large WEEE (63kg/year compared to the 59kg/year respectively). As regards estimation of the total production of EoL mobile phones, around 45 thousand pieces originated in the Czech Republic between the years 1990-2000 and 6,5...
|
|
|
Material Flows and Environmental Impacts of s-WEEE in the Czech Republic
Polák, Miloš ; Hák, Tomáš (advisor) ; Kočí, Vladimír (referee) ; Vladík, Jaroslav (referee)
This thesis is a comprehensive study describing and quantifying material flows of waste electric and electronic equipment (WEEE) in the Czech Republic; specifically the material flow of small waste electric and electronic equipment (s-WEEE) as well as representative substances. The studied material flows were estimated regarding aspects of the environmental impact. The End-of-Life mobile phone is seen as a typical representative of s-WEEE ; therefore material flows of mobile phones are described in this thesis as well. To put it in concrete figures, approximately 124 thousand tons of WEEE from households originated in the Czech Republic in 2010, where each inhabitant got rid off 4 pieces of WEEE in average. Further, total production calculating also consumer-like WEEE from companies and institutions was around 141 thousand tons in 2010. S-WEEE present around 15% from the total amount of WEEE originating in 2010; however it is more than 80% as regards the number of pieces. Despite of that fact the recycling potential of Au for instance is slightly higher by s-WEEE than by large WEEE (63kg/year compared to the 59kg/year respectively). As regards estimation of the total production of EoL mobile phones, around 45 thousand pieces originated in the Czech Republic between the years 1990-2000 and 6,5...
|
|
|
Life Cycle Assessment of water treatetment technology
Cabejšková, Zuzana ; Kočí, Vladimír (advisor) ; Pivokonský, Martin (referee)
Charles University in Prague Faculty of Science Institute for Environmental Studies Ecology and Environmental Protection Environmental Protection Bachelor Thesis - Abstract Life Cycle Assessment of Water Treatment Technology Posuzování životního cyklu výroby pitné vody Author: Zuzana Cabejšková Supervisor: Doc. Ing. Vladimír Kočí, Ph.D. Prague, May 2012 Abstract (English) This bachelor thesis consists of a Life Cycle Assessment (LCA) of two water treatment plants (WTP) in the Czech Republic. The first WTP is situated in Hrdějovice in South Bohemia and treats underground raw water. The second WTP is in Central Bohemia and treats surface water from the Želivka reservoir. The pumping of raw water and its subsequent treatment were considered for the purposes of LCA; other phases of the life cycle of potable water such as distribution weren't taken into account. Waterworks companies provided data on consumption of energy and materials. Based on this data, the environmental impacts of 1m3 of treated water were calculated and a comparison of the two WTPs within different impact categories was performed. It was found that WTP Hrdějovice has a four-time lower overall environmental impact than WTP Želivka. Global Warming Potential, Acidification Potential and Abiotic Depletion of fossil fuels were identified as the...
|
|
|
Comparison of production and conditions of use of liquid biofuels in different countries
Semerák, Adam ; Pecen, Josef (advisor) ; Krepl, Vladimír (referee)
Biofuels production has experienced rapid growth in recent years. Many countries initiated legislative measures to promote their development, production and use in the transport sector. However, there are also growing concerns about the economic, environmental and social sustainability of biofuels, as well as their ability to truly meet the expectations of energy security.
This paper attempted to point out the complexity and diversity of the production and use of liquid biofuels in the transport sector while using available information resources. More specifically, bioethanol and biodiesel which are most commonly used biofuels. Furthermore, he also tried to point out the diversity of characteristics and impacts in production and use of liquid biofuels, as well as the importance of consideration of the specific local conditions. That was examined from four perspectives of sustainability: technological, economical, socioinstitutional, and environmental. To illustrate the diversity and interdependence of the impacts of this whole issue two countries with very different human development indexes were selected. The Malaysia and India.
At the basis of this paper the author concluded that for successful and sustainable production of liquid biofuels there must be taken into account all the factors examined equally. He also emphasized the importance of further research of this renewable energy source in terms of ensuring future energy security.
|
|
|
Analýza environmentální situace lyžařských sjezdových areálů ve vybraném chráněném území
Rejchrt, Pavel
This thesis titled The analysis of the environmental situation of the downhill ski centres in the chosen protected area is aimed at identification of downhill skiing centres in the Protected landscape area (PLA) Orlické hory and evaluation of environmental impacts of their operation. For this purpose, I firstly defined potential impacts of skiing centres on the environment and society. Afterwards, I characterized the region of Protected landscape area Orlické hory putting emphasis on natural conditions and touristic utilization of the territory. Subsequently, I described particular skiing centres and pointed out the high-risk environmental factors. The evaluation shows, that the strongest environmental impacts in the area are caused by production of artificial snow, sound system installation, or noise in general and lighting during night skiing. Further impacts are caused by additional activities in the centres. With the skiing centres is also connected development of tourism in the PLA Orlické hory, which has impacts on the environment as well.
|
|
| |
|
| |
|
| |
|
| |
|
| |
guest ::
