An absorption tower, also known as an absorption column or scrubber, is a vertical cylindrical vessel designed for efficient mass transfer between gas and liquid phases. Typically constructed from corrosion-resistant materials like stainless steel or glass, the tower is filled with packing materials or trays that maximize surface area, facilitating optimal interaction between the gas and liquid. As the gas flows upward through the column, it encounters a downward flow of liquid solvent that absorbs specific gases or vapors, effectively removing pollutants or desired components from the gas stream. Widely utilized in various industries and laboratory settings, absorption towers play a crucial role in applications such as gas scrubbing, air purification, chemical separation, and solvent recovery, contributing significantly to pollution control and resource recycling. Their versatile design allows for both continuous and batch operation, making them essential for enhancing the efficiency of numerous chemical and environmental processes.