Frash process:
Dust from drilling, also leaked out sulfur can react with O
2 creating SO
2 which causes acid rain.
Contact process - essentially, same as above. Harmful gases can be leaked out.
Electrolysis of NaCl, currently there are no environmental issues because they now use the Membrane Process. The first one used was mercury cell - mercury was leaked out and went into the food chain, which affected aquatic organisms and from the food chain, human health. Diaphragm process - used asbestos which caused lung cancer :O
Saponification - not much that I of
Solvay process - CaCl
2. There's heaps of it and it's terribly useless. It can melt ice on roads. WOWWW.. so they gotta put it somewhere, but can't put it in water (Cl ions). They're trying to mix it into concrete, but there's still too much. For this reason, the Solvay process is being phased out in many areas.
Solid waste from crushed limestone is not toxic but is sometimes disposed of in waterways. This, although not toxic, irritates boaters as it can block boat passageway. It is also visually very unattractive. It is now being used in landfill and brick manufacture.
Dust is a problem for people near by. It is being improved by trick loading facilities, upgrading dust suppression systems, keeping vehicles on asphalt roadways and using a wetting solution to suppress dust.
Noise is another problem. It can be reduced by enclosure of noisy areas, using silencers and monitoring to identify sources.
Heat is yet another problem. This is being solved by the use of cooling pools to decrease the temperature. Water must also be cooled before discharge into water bodies so as to not increase temperature.
