Natural process by which water soluble substances (such as calcium, fertilizers, pesticides) are washed out from soil or wastes. These leached out chemicals (called leachites) cause pollution of surface and sub-surface water.

Use leaching in a sentence

  • The corporation's lawyers argued that its toxic waste disposal practices were safe and environmentally friendly but conservationists produced evidence that clearly showed dangerous chemicals leaching out from contaminated soil beds.

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  • In Chemistry class today, we went over leaching which made me and my friend bored because we hated everything about it.

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  • When running an industrial plant you must be able to be good at leaching out the bad substances and getting rid of them effectively.

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