Air pollution control (APC) technologies are critical to protect human health and the environment by reducing emissions from stationary and mobile sources. This paper reviews principal APC technologies from a chemical standpoint: the fundamental removal mechanisms (adsorption, absorption, catalysis, filtration, electrostatic collection, and chemical transformation), device-level implementations (scrubbers, electrostatic precipitators, baghouses, selective catalytic reduction, thermal/catalytic oxidizers, activated carbon systems), and emerging materials and process intensification strategies. Representative case studies illustrate real-world performance, design considerations, and trade-offs. The review underscores the central role of chemistry — reaction pathways, surface interactions, sorbent design, and catalytic mechanisms — in driving advances in air pollution control. 1–3
Sanghratna L. Kasare (2026) studied this question.