VOL. 11 issue 2 (2009)
text of each
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All articles have been reviewed by the members of Scientific Board.
LCA analysis of conventional heat sources
as a tool in environmental management in the building sector
The paper presents a short characteristics of conventional energy
sources. It also describes the methodology of life cycle analysis. The
most popular conventional heat sources have also been elaborated. The
paper also analyzes the choice of heat in terms of economical and
of calorific value of volatile matter from the pyrolysis process of
Pyrolysis is one of important processes undergoing during incineration
of waste. To make energy balance for these processes one must know
enthalpies of all substances taking part or emerging in processes. The
enthalpies of all substances are defined in the paper and method of
their investigation is presented. Measurements of higher calorific
values HCV of sewage sludge and char were made and respective values
for volatile matter were calculated. Values obtained by measurement and
calculations are compared with the values of other substances like coal
and municipal waste. The comparison prove that the method of
determining HCV from the parameters of other products of pyrolysis
process is fairly accurate.
of vinasse utilisation: industrial applications and laboratory scale
Ryznar-Luty A., Cibis E., Krzywonos M.
Vinasse is a by-product of ethanol manufacture from molasses. The
quantity of vinasse obtained per one litre of alcohol produced varies
between 9 and 14 l. Vinasse is characterised by a COD (Chemical Oxygen
Demand) ranging from about 15 to more than 100 g O2/l. The growing
trend observed in the global production of ethanol in the last few
years has triggered serious problems in the utilisation of the total
volume of vinasse produced. The present paper includes a review of
potential agricultural uses of this by-product, as well as an analysis
of the suggested possibility of utilising vinasse as the substrate for
the biosynthesis of organic compounds and for biomass synthesis. The
paper also contains a discussion of the results obtained during
biological and physicochemical treatment of vinasse under laboratory
and industrial conditions.
of out of use vehicle
At the turn of the last years, in Poland progress is in field of waste
management is clearly visible. Specially exchanges apply to the
recovery and recycling waste, which level is considerably
increase year of a year . The increase, connected with sharpened
the environmental regulations and the growth of ecological
consciousness of society. The work presents the rules of law apply to
proceeding with out of use vehicle in EU and Poland as well the level
of recovery and recycling of out of use vehicle. The data shows, that
thanks to the realized processes of utilization of waste as secondary
materials, in Poland the required levels were fulfilled.
aspects of sludge from sewage-treatment plant treatment during
co-combustion in energetic boilers
Pikoń K., Kokot A.
In the paper general review of methods of sludge utilization is
presented. The detailed study on thermal treatment of sludge during
co-combustion in energetic boilers is given. The analysis of costs and
benefits of application of those technologies are presented. On the
basis of data obtained form PEC – Gliwice the possible quantity of
sludge for utilization was calculated. The mass and energy flows during
co-combustion were analyzed as well as economic aspects of the process.
recovery by industrial combustion and co-combustion of used tires
Wasielewski R., Stelmach S.
Used tires can be considered as a waste, which is very noxious for
natural environment. Because used tires contain about 80% of elemental
carbon and hydrogen, they can be utilized as a fuel in some production
process (eg. cement production) or for direct heat and power
generation. Used tires can be utilized both as whole tires and after
preliminary mechanical processing, which means size reduction and metal
parts separation. The paper presents description of most important used
tires combustion and co-combustion technologies base on examples of
selected industrial installations. Some technological and environmental
aspects of thermal conversion of used tires are also discussed.
directions of modern installations in waste management plants system
Wandrasz J. W., Hryb W.
The role and the significance of waste sorting plants in the modern
waste management system are presented. The methods of assessing the
effectiveness of waste sorting plants are discussed together with the
assumption of new technology concerning landfill active reclamation.
exploitation problems of plasma destruction of the refigrea medium
In the paper the exploitation problems connected with plasma
destruction of CFC’s and HCFC’s was described. The horizontal chamber
working in continuous mode was used during examinations. The
experiments dealt with improper state of the process was considered.
The operation products was analized as a dangerous for natural
enviroment. The experimental examinations described above led to high
efficiency of the ‘wrong freons’ destruction and safe operation