Question: In chemical engineering, which gas separation technique relies on the principle of adsorption onto a solid surface to separate gases based on their affinity for the adsorbent material, often utilized in the production of high$-$purity gases for industrial applications?

a$)$ Distillation$-$based separation

b$)$ Adsorption$-$based separation

c$)$ Filtration$-$based separation

d$)$ Crystallization$-$based separation