1.   Dissolved metals form a solid waste.

2.   There are, however, natural systems in which dissolved metals move freely through membranes, irrespective of concentration.

3.   Below the foil, the dissolved metal had turned the red sauce black.

4.   Deason has designed a series of ponds and limestone spillways to aerate the water and raise its pH from acid to alkaline until the dissolved metals drop out.

5.   Once the microbes solidify the dissolved metal, the hardened particles can be scooped up and removed, Lovley said.