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To decrease the CO2 levels in the atmosphere without compromising with the electricity production and energy security two different issues have to be addressed ? replacement of the current use of fossil fuels with CO2-neutral fuels and increase in the efficiency of the existing processes for thermal conversion. Fluidized bed (FB) thermal conversion is usually considered as the most energy efficient choice when biomass and municipal solid waste are used as fuels. The bed material that is used commonly within FB boi...

The issues of rational use of land resources have become increasingly relevant, as all economies depend on the goods and services provided by the natural environment. Soils as a natural resource perform a number of key environmental, social and economic functions. In Latvia, utilised agricultural land occupies 2.3 mln. ha, yet no research investigations into organic soils have been conducted. The use of agricultural land, organic soils in particular, is associated with negative environmental impacts. Therefore, th...

The transport sector is one the most energy-intensive sector on planet. Whether we are discussing about cargo or travelers, the transport sector is causing environmental damage. Therefore an Impact Assessment study in the Transport sector concerning energy efficiency should draws attention. First of all the transport cost decrease, and second it contributes to the natural resources to be saved by the fossil fuels.Reducing greenhouse gas emissions and current rate of global warming can happen using a proper energy ...

The paper presents the overview of using the modification natural zeolites for heavy metals removal from aquatic environment. Zeolites occurred naturally as microporous materials. They are hydrated aluminosilicates with special ion-exchange and sorption properties. These minerals with special three-dimensional porous structure possess advantages over other cation exchange materials such as prize, the strong selectivity for different cations at low temperatures followed with loosen of non-toxic replaceable cations ...

Kalman filter is a set of mathematical equations that provide an efficient and recursive calculation of the means to estimate the state of a process, in a way that minimizes the average square error. The filter is very powerful in several aspects: supports estimations of past, present, and future states, and it can do so even when the precise nature of the shaped system is unknown. The concept of "closed loop" in Reservoir management is currently considered significant in the oil industry. The technique of updatin...

Application of geophysical methods when purposefully deployed, is an efficient tool for getting excellent information while resolving many tasks in various disciplines. The article is about utilisation of data gained by deploying electrical resistivity tomography while resolving stability of non-stable rock block. In this case the task of the mine meter was to calculate volume of eroded rock in discussed rock massif. Information of geophysical measurement by non-traditional method were used. In this case are resul...

This paper deals with alternative options for the recovery of ash from metallurgical production, which is considered to be waste generated by the above-mentioned production process and is currently being disposed of by landfilling. It is precisely the recovery of such waste that contributes to the sustainable development of the environment, to the increase of the metallurgical business itself and thus to the preservation of its competitiveness. Based on quantitative and qualitative analyzes of the ash produced, it...

Nowadays a biomass belong to main sphere of interest by reason of global energy politics. A many researcher works are concentrated on feasible solutions according with the politics a main strategy to elimination of energy and environmental load. This work is fall under solutions for energy saving and fossil fuel substitution by biomass. In concrete, the interest of authors is in iron ore sintering area and utilization of biomass as a part of sintering mixture or as a partial replacement for agglomeration coke. The...

Reliability of renewable energy generation forecast became particularly important since its share denotes a constant growth in the global energy mix and the uncertainty of supply continuity resulting from this rises. Given the numerous geographic and meteorological factors that greatly influence the results of a more general probabilistic determination, an accurate prospect is hardly possible when enlarging the territory or the time span. Moreover, power systems disturbances and load variation, also unpredictable,...

Over the last decade, the rise in energy demands for industries and households all over the world has caught the attention of environmentalists. Higher energy demands calls for more energy sources, yet majority of the energy sources have an immense effect on the environment and atmosphere. Today, smart cities are the model for future city planning and urban development by integrating information communication technology (ICT) solutions as well as energy conservation and climate change combating mechanisms where wi...

The article deals with the use of voluntary associations of municipalities for investment purposes in connection with regional policy. Voluntary associations of municipalities represent one of the ways of interregional co-operation. Usually they take form of a public group or association as a legal entity and the purpose of all associations of municipalities is to provide public services to their members. The aim of the article is to find a possible way of financing investment activities in a community with a focu...

The main objective of the paper is to propose an innovative approach to analyzing the vulnerability of electricity networks from natural hazards. The proposed innovative approach is based on the principles (technology) of virtual reality (VR). The main features and advantages of VR are discussed. The possibilities of VR for the study of the negative impact of natural hazards on the infrastructure are analyzed. The importance and timeliness of an in-depth analysis of the vulnerability of electricity networks from t...

Water resources are the national wealth of any country and one of the basic foundations of its economic development. The growth of cities, rapid industrial development, intensification of agriculture, a significant expansion of irrigated land and many other factors make the problems of rational water resource management more difficult. The activity of the mining and chemical enterprise mainly leads to the soil and the water pollution. After the closure of the enterprise, it is necessary to develop a remediation pr...

History of water supply and sewerage systems dates back to ancient times, since water is a scarce resource needed for life. Worldwide, it is possible to find the remains of various drinking water pipelines. Various ways of dealing with wastewater are also documented. This article deals with water management in the Czech Republic area. The topicality of the text is supported by the fact that not all residents in the Czech Republic are currently supplied by drinking water from public water systems and the proportion...

Wave equations for the dynamics of the ontogeny of linden leaves growing near a highway with intensive movement are given. The way of the analysis of parameters (lengths, width, perimeter and the area) for engineering biology and bioindication of the surrounding air environment is shown by oscillatory indignations of leaves. On the roadside, choose a tree and measure the distance from the middle of the root neck to the curb perpendicular to the road. In each zone a group of not less than 5 leaves is selected, mark...

This paper presents a novel control system design for the wind turbine model with PIC microcontroller power control system. The system uses Doubly Fed Induction Generator (DFIG) for wind power generation to generate electricity. For controlling power generation process the system applies microcontrollers PIC operating in multitasking mode. The proposed PIC controlled DFIG not only provides a low cost solution to today?s electric power needs, but also is aimed at delivering better power quality, making it ideally s...

Zarechensk barite-polymetallic deposit is located in the northwest part of Ore Altai megatrough, which has long-lasting history of its development and complicated geological structure. Within the ore district, which is the northwest part of the devonian Zmeinogorsk-Bystrushinsky trough, ore mineralization is associated with the system of northwest border faults and cross branch faults. At these deposit four main stages and five phases of minerogenesis were determined. The first stage is the stage of oregenesis beg...

A specific feature of thermal power plants (TPP) is the multivariate nature of their intense technogenic impact on the environment, including pollution of air, environmental waters, soils, as well as disturbance of the geologic environment. Besides, TPPs cause thermal, radiation, noise and electromagnetic pollution; they also induce physical littering of the terrain and problems associated with storage of ash waste. Due to the reasons stated above, a comprehensive study of environmental damage zones caused by TPP ...