Separation Processes for Environmental Preservation

Environmental pollution and the growing demand for efficient resource use require separation technologies that combine treatment performance with sustainability. This Reprint brings together recent advances in separation processes for environmental preservation, with emphasis on contaminant removal, wastewater treatment, waste valorization, material recovery, and circular economy strategies. The contributions address adsorption using activated carbon, biochar, and mineral residues; packed column modeling for heavy metal removal; pilot-scale flotation for winery wastewater treatment; fluidized bed separation and particle behavior in gas-solid systems; and green solvent-based fractionation of petroleum components. The studies cover diverse pollutants and matrices, including pharmaceuticals, dyes, pathogenic microorganisms, toxic metals, industrial effluents, petroleum fractions, and solid residues. By integrating experimental characterization, process evaluation, computational modeling, and pilot-scale applications, this Reprint highlights practical approaches for developing cleaner, more efficient, and environmentally responsible separation systems. It is intended for researchers, engineers, and professionals working in chemical engineering, environmental technology, materials science, wastewater treatment, and sustainable process development.