Engineered sand zaps storm water pollutants

Science Daily  August 30, 2018
To provide a passive, low-cost means of oxidizing substituted phenols, aromatic amines, and other electron-rich organic compounds during infiltration of contaminated waters, an international team of researchers (USA – UC Berkeley, the Netherlands) coated sand with manganese oxide using a new approach involving the room-temperature oxidation of Mn2+ with permanganate. The coated sand effectively oxidized bisphenol A under typical infiltration conditions and sustained reactivity longer than previously described geomedia. The results suggest that it is possible to regenerate the oxidative capacity of manganese oxide-coated sands without excavating stormwater infiltration systems and manganese oxide geomedia may be a cost-effective means of treating urban stormwater and other contaminated waters… read more. TECHNICAL ARTICLE

Storm drain. Credit: © darkfoxelixir / Fotolia

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