Methane (CH4) is one of the most important greenhouse gases, and substantially impacts climate change. Over a 20-year period, its global warming potential (GWP) is approximately 80 times higher than that of carbon dioxide (CO2). One of the significant...

This study presents a comprehensive investigation of polyimide (PMDA-ODA) nanocomposite membranes incorporating hematite (Fe2O3) and magnetite (Fe3O4) nanoparticles. Incorporation of these fillers primarily aims to reduce nitrogen permeability by reducing...

Various flow regimes (FRs) are formed in bubble columns (BCs). Their boundaries are comparatively well studied only in an air-water system. In this work, a novel combined index (CI) was defined and extracted from gauge pressure (GP) fluctuations recorded...

The extraction of hydrogen sulfide (H2S) from gases is essential in numerous industrial applications to safeguard human safety, preserve equipment, and mitigate environmental harm. In these circumstances, zeolites are crucial for the extraction of H2S...

Recent studies have reported the fabrication of Polymer-Derived Ceramics (PDCs) materials using Digital Light Processing (DLP). However, these works primarily employed commercially available preceramic polymers (PCPs). In contrast, in this study we took...

This study reports the effects of magnetic alignment of the hybrid Fe3O4@ZIF-8 filler and operating parameters (humidity, membrane swelling, feed pressure, and long-term stability) on CO2/N2 separation in Pebax® 1657 thin-film nanocomposite membranes....

A significant problem in hard coal mining is the utilisation of ventilation air methane (VAM). Two basic methane combustion methods, thermal (homogeneous) and catalytic oxidation, are analysed in detail in this paper. Both processes are compared based...

The selection of carbon sources and the biosynthesis of polyhydroxybutyrate (PHB) by the Azotobacter vinelandii N-15 strain using renewable raw materials were investigated. Among the tested substrates (starch, sucrose, molasses, bran), molasses as the...

The growing concern over the long-term persistence of plastic waste has driven research into biological methods of breaking down polymers. This study investigated a process that combines physicochemical pretreatment and biodegradation of low-density...

Since fossil fuels still dominate industry and electricity production, post-combustion carbon capture remains essential for decarbonizing these sectors. The most advanced technique for widespread application, particularly in hard-to-abate industries,...

Membrane processes continue to attract significant interest, as reflected in the growing number of studies focused on the development of innovative membrane materials. Novel membranes are frequently designed for specific separation processes, in which...

Bubble columns (BCs) are widely used gas-liquid contactors in the chemical industry. Their hydrodynamic and mass transfer performance depends on the prevailing flow regime (FR) and the gas sparger (GS) type (particularly in the homogeneous FR). In this...