Chemical processing applications, including those involving fertilizer manufacturing and waste acid recovery, often require heating or cooling of hot air streams, energy-intensive processes that increase economic and environmental costs. In addition, chemical manufacturers often have to deal with excess moisture in high humidity environments. Humid air can cause products to stick and clump, creating problems that affect overall production efficiency. Dehumidifying incoming air with an UHI rotary dehumidification system creates an ideal environment for producing, packaging, shipping and storing moisture-sensitive products.