Comment by cyberax

> The process can be powered simply by ambient wind to pass the water vapor through the mesh.

That's not how chemistry works. You need to input external energy to produce ammonia out of water and nitrogen. It's the law of energy conservation.

In this case, the ultimate energy source appears to be the wind. It tears off microdroplets of water from larger water bodies, so the energy is stored in the surface tension of microdroplets.