Title:

Effectiveness of Sorbents for Reducing the Content of Nickel Cations in Water

Authors:

Iveta Pandová

Abstract:

The presence of heavy metals in waters is a relatively frequent manifestation of their pollution. The big danger with these metal elements is the fact that they are already highly toxic at very low concentrations. The use of ion exchange and sorption is one of the possible methods of the removing metals from water. Considering the economic aspects of such a process, the possibilities of using easily available natural materials, including zeolites are being sought. Zeolites belong to hydrated aluminosilicates with a regular tetrahedral structure. The aim of the work was to study and compare the sorption properties of natural and synthetic zeolite. The experiments were related to the reduction of the content of nickel cations from model aqueous solutions.

Citation:

Pandová Iveta: Effectiveness of Sorbents for Reducing the Content of Nickel Cations in Water, Advance in Thermal Processes and Energy Transformation, Volume 5, No.4, (2022), pp. 55-59, ISSN 2585-9102. https://doi.org/10.54570/atpet2022/05/04/0055

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Title:

Efficiency Possibilities of Energy Management of Apartment Building – Use Case

Authors:

Pavol Kanuch, Peter Taus

Abstract:

In this paper we are assessing the aspect of ecological renovation of typical apartment building in Slovakia from energy, ecology and user comfort point of view. For increase in energy efficiency of the building we propose to install photovoltaics on the roof and south facing façade with capacity of 45k Wp, heat pumps for utilization of waste heat from the building's sewage system and waste heat from ventilation shafts with total capacity of 50 kWp, external window shading for east, west and south facing façades, green roof and ceiling cooling for apartment units. The complex renovation represents a positive benefit not only from the user, energy and environmental point of view, but also economical.

Citation:

Kanuch Pavol, Taus Peter: Efficiency Possibilities of Energy Management of Apartment Building – Use Case, Advance in Thermal Processes and Energy Transformation, Volume 5, No. 4, (2022), p. 60-68, ISSN 2585-9102. https://doi.org/10.54570/atpet2022/05/04/0060

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Title:

New Generation of Refractories for Rotary Cement Kiln

Authors:

Miroslav Tatič, Ladislav Lukáč, Ján Kizek

Abstract:

The article describes a rotary cement kiln and its process, discusses primary and secondary fuels and presented stresses on the refractory lining. The authors present various wear and lining concepts. In the contribution are summarized practical development applied to these aggregates. Optimum lining performance throughout the kiln can be achieved by appropriate refractory selection. Finally, this article highlights some types of newly developed refractory materials for the basic lining in modern cement rotary kilns.

Citation:

Tatič Miroslav, Lukáč Ladislav, Kizek Ján: New Generation of Refractories for Rotary Cement Kiln, Advance in Thermal Processes and Energy Transformation Volume 5, No.4 (2022), p. 69-77, ISSN 2585-9102. https://doi.org/10.54570/atpet2022/05/04/0069

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