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Article
Energy & Fuels
Anna M. Kisiela-Czajka et al.
Summary: In this study, the kinetic parameters of SO2 adsorption on unburned carbons and activated carbons were determined using linear and non-linear regression methods. The fitting quality of different models was assessed and it was found that linear regression is more accurate in reflecting the behavior of the adsorption system. Different mechanisms were observed for the two types of carbons.
Article
Energy & Fuels
Volodymyr Gursky et al.
Summary: A new design of dual-frequency inertial drive has been developed to improve the processing efficiency of bulk materials by generating excitation force with variable amplitude and frequency; Finite element model is used to check strength, achieving more efficient motion trajectories and energy saving.
Article
Energy & Fuels
Maciej Gorka et al.
Summary: Landfills are major sources of greenhouse gas emissions and contribute to climate change. Spatial distribution and isotopic composition of methane and carbon dioxide around landfill sites show significant variability, and landfill management practices can play a role in reducing methane emissions into the air.
Article
Energy & Fuels
Pawel Strzalkowski
Summary: Natural dimension stone processing generates significant amounts of stone waste, impacting the environment and efficiency of stone-processing plants. The key to reducing waste is through rational planning, maximizing material usage efficiency, and utilizing modern processing machines. Efforts should be made to manage and reduce this significant volume of stone waste for increased profitability and environmental protection.
Review
Energy & Fuels
Tomasz Hardy et al.
Summary: The use of low-emission combustion technologies in power boilers may lead to increased risk of high-temperature corrosion and failure. Therefore, the development of fast and reliable corrosion diagnostic techniques is crucial for maintaining the security of energy supply.
Article
Energy & Fuels
Karol Krol et al.
Summary: This paper investigates the mechanical properties of coal and biomass ash during the sintering process, utilizing ash composition and ultimate analysis to determine common ash deposition indices. Mechanical tests and pressure drop tests were conducted, showing promising results in early prediction of slagging/fouling risks through fracture stress testing and pressure drop testing.
Article
Energy & Fuels
Agnieszka Sobianowska-Turek et al.
Summary: This study investigated the removal of Zn(II) and Mn(II) from dilute aqueous solutions derived from waste batteries through an ion flotation process. Optimal conditions and process parameters were established for selective removal of these metals, with good selectivity coefficients achieved under specific conditions.
Article
Energy & Fuels
Zbigniew Krysa et al.
Summary: The article analyzes the influence of selected operating environment parameters on the operation of a technological system in a mine and examines the profitability of exploiting a deposit of low quality. The results show that maintaining the operating environment in good technical condition positively influences machine operating cycle times, the required total time of the transportation task and the operating costs.
Article
Energy & Fuels
Robert Cichowicz et al.
Summary: Winter period in many regions of the world sees poor air quality due to increased use of heating systems, leading to higher concentrations of pollutants. This pollution is often worsened by meteorological conditions, affecting the levels of particulate matter and gaseous pollutants.
Article
Energy & Fuels
Krzysztof M. Czajka
Summary: This research investigated the impact of thermal lag on gasification of different coal types in CO2 atmosphere through experiments and numerical modeling. Results showed that thermal lag in CO2 is about 11% greater than in N-2, and has a significant influence on kinetic parameters.
Article
Energy & Fuels
Dawid Szurgacz
Summary: This study focused on determining the dynamic power of a hydraulic leg, which is essential for maintaining the position of a powered roof support. The analysis revealed that the power of the hydraulic leg must exceed the energy of rock mass impact, which is primarily generated by tremors caused during mining exploitation.
Article
Energy & Fuels
Agnieszka Urbanowska et al.
Summary: The new regulations restrict traditional ways of utilizing the by-product of anaerobic digestion, prompting the exploration of innovative methods such as hydrothermal carbonisation (HTC) for more efficient valorisation. By recirculating process water back to the HTC process, nutrient recovery efficiency can be enhanced. The use of cascade membrane systems has been found to be effective in separating organic by-products of HTC and water, achieving a COD removal efficiency of nearly 60%.
Article
Energy & Fuels
Witold Kawalec et al.
Summary: Exploitation of lignite in continuous surface mines requires significant energy consumption, but by converting the potential gravitational energy of conveyed overburden into electric energy, environmental impact can be reduced and energy consumption can be saved. Investing in regenerative inverters for powering the overburden conveyor can pay off within a few years.
Article
Energy & Fuels
Weronika Urbanska et al.
