VOL. 10 (2008)

Full text of each article is available in PDF format. CD with full texts could be ordered on our web site.
All articles have been reviewed by the members of Scientific Board.


An analysis of the current condition of waste management in Poland and the directions for its development as exemplified by the city of Krakow
Kwiatkowsk M., W±sik S.
(in Polish)
Abstract
The article presents an analysis of the current condition of waste management in Krakow and in Poland, as well as the potential directions for its development, taking into account the environmental, economic and social aspects. It also covers the results of the survey targeted in particular at determining the ways of perceiving the problems related to waste management in Poland by the local community and its expectations as to the future activities in this respect. The survey was to provide information on the city dwellers’ assessment of the availability of the infrastructure for selective waste collection and the obstacles for its development. Another purpose of the survey was to evaluate the level of education in terms of waste management and to assess public opinion on the planned construction of a waste incineration plant and the concept of introducing common deposit for returnable containers, patterned after other countries. The survey also involved a request to define the dwellers’ readiness to incur the costs of introducing new solutions in the field of waste management.

Waste disposal system with energy recovery
Pilawski M.
(in Polish)
Abstract
Waste transformation system works as a system of alternative fuels production. One can use that alternative fuels to transformation of other kinds of wastes. In technological line is created idea : „ WWW System - Waste Works on Waste System „. In consistency WWW System works as a „ all waste liquidation system”. In the paper is described one of possible of WWW System with tires transformation process into gas fuel using to transformation of waste plastic materials into liquid fuel components, etc. Excess of fuel or energy production is sold on the market.

The future of electronic waste management in Poland
Pikoń K.
(in Polish)
Abstract
Electronic wastes are the relatively large part of hazardous waste total volume. Their prop-erties and composition could make thread for natural environment. This is why EU pays special attention in its waste policy to this group of waste. In the article law requirements relevant to electronic waste management was presented. Its place in polish and EU law system was indicated. In the separate chapter streams of various electronic waste types was described as well as the overall balance of 16 02 group waste in recent years. Challenges for the future as far as electronic waste is concerned were discussed in the article.

Two layers gas-generator to biomass gasification - mathematical model
Poskrobko S.
(in Polish)
Abstract
The work presents the conception of formulation of the mathematical model of generator processes, which includes basic physical and chemical phenomena of high-temperature transformation of biomass, i.e. gasification and degasification. Within the frames of mathematical description given are simplified mass and energy balance equations, the solu-tion of which leads to the identification of essential technological parameters being indis-pensable in the course of designing of gas generators. Discussed problems concern manu-facturing of synthetic gas (generator gas) for needs of power engineering.

Polyethylene form waste – whether problematic waste or energy resource?
Hryb W.
(in Polish)
Abstract
Waste foil for the last time, especially in the media are referred to as particularly dangerous for the environment. In the markets is limited to the issue of plastic bags, introduces the reusable bags called them ecological. This paper presents a proposal for the use of polyethylene waste as a valuable component of the formed fuel. It presented the results of the research of the properties of formed fuel containing waste polyethylene and give an example of the sorting plant, which obtains this type of product as a result of municipal and industrial waste processing.

Thermal conversion of used abrasive materials for electrocorund recovery
Wasielewski R., Stelmach S.
(in Polish)
Abstract
The paper presents preliminary results of used abrasive materials thermal conversion. These investigations have been performed for assessment of electrocorund recovery possibility. Sample of mixed used cutting discs and abrasive papers obtained from abrasives manufacturer has been utilize for testing. Firstly, detailed physicochemical properties of tested waste have been determined. The test of thermal conversion has been realized at fixed-bed laboratory scale installation with temperature rise up to 1000oC. It has been found that thermal conversion of used abrasive materials could be a preliminary step of its preparing for further electrocorund recovery. Recovery of electrocorund from solid residue produced during thermal conversion of used abrasive materials should be based on typical methods exploited for enrichment of minerals, e.g. flotation or magnetic separation with rotating magnetic field.

The influence of storing of the fuel based on sewage sludge and sawdust on its chosen prosperities
Wzorek M.
(in Polish)
Abstract
In the paper the influence of storing of the fuel based on  sewage sludge and sawdust on its chosen prosperities is presented.
Energy characteristic and physical prosperities, which have important to transport and stor-ing operation before its co-combustion with coal, have been defined. The investigations were led by period of six months, during which the changes of prosperities e.i. moisture, the heat value and drop strength have been marked. It was also done the tests of resistance to forst and waterproofness of the fuel. To determine the environmental impact when the fuel is stored, the produced fuel was subjected to the tests on harmful substance elution. Basing of conducted experimental tests it is possible to affirm that the fuel from sewage sludge and sawdust could be periodically store before its combustion.

Disassembly, recovery and recycling of waste of selected electrical and electronic equipment
Alwaeli M.
(in Polish)
Abstract
Waste of selected electrical and electronic (E&E) equipment appertain to 16 02 09 industrial waste group and 20 01 35 municipal waste group. In view of deleterious substance content, most often E&E , classified as hazardous waste. Among of E&E waste, the greatest part come from computer equipment waste. Hence, considerable part of this work will be devote for present the methods of recycling and dealing with computer equipment waste.