comparing leachate before during and after filtering
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Photo credit: © Jason Smalley / Alamy / Afripics
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Keywords: black, chemical, clean, cleanse, compare, comparing, conservation, conserve, contaminate, contaminated, electrical, environmental, filter, filtering, heavy, highly, landfill, leach, leachate, measure, pipe, poison, poisonous, polluted, purification, purify, quantify, research, researcher, rubbish, scienti