Green water-purification system works without heavy metals or corrosive chemicals

Green water-purification system works without heavy metals or corrosive chemicals

This photo shows a concentrator where samples were placed. Credit: Dan Wang

Scientists at the Institute of Process Engineering (IPE) at the Chinese Academy of Sciences in Beijing and Yangzhou University (YZU) in Jiangsu have developed an effective and energy-efficient technique for purifying water by using graphitic carbon nitride sheets.

Their prototype, presented February 7 in the journal Chem, purified pathogen-rich water in 30 min, killing over 99.9999% of … [more…]

Tucson Water mistakenly sent contaminated water to thousands of residents

photo: water treatment plant. Tucson Water mistakenly sent contaminated water to thousands of residents

Well water injected with hydrogen peroxide passes through UV/AOP Reactors at Tucson Water’s Advanced Oxidation Process Water Treatment facility near Irvington and I-19 on Sept. 26, 2018. Ultraviolet light, used in concert with hydrogen peroxide, creates a photochemical process that breaks down 1,4-dioxane molecules into harmless components. Water treated at AOP is passed to the older TARP facility to remove TCE. Rick Wiley / Arizona Daily Star

Tucson Water recently

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Sunscreen chemicals in water may harm fish embryos

photo: sunset over the ocean. Sunscreen chemicals in water may harm fish embryos

Photo: CC0 Public Domain

A painful sunburn can ruin a vacation, and too much sun can also lead to more serious problems like premature skin aging and melanoma. Therefore, manufacturers have added ultraviolet (UV) filters to many personal care products, including sunscreens, moisturizers and makeup.

Scientists have detected these substances in the environment, but most studies have concluded that individual sunscreen chemicals are not present at high-enough levels to harm … [more…]