Recycling Chlorine: A Recycled Idea

SWIMMERS PLUNGING INTO public pools often feel reassured by a whiff of chlorine. But the chemical is an environmental nightmare. American makers of plastics, paints, and other materials consume 12 million tons of it each year. During production, as much as half of that may combine with hydrogen to form a corrosive waste, hydrogen chloride, which turns into hydrochloric acid when dissolved in water.

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