"We should not neglect the natural biomass that is rich in this element," she and colleagues assert in the January 30 issue of the Journal of Hazardous Materials. This element cranks up carbon's ability to clean sulfur from the air, a process called adsorption. But coffee grounds also come equipped with a special ingredient that boosts their smell-fighting power.Ĭaffeine, the stimulant that gives coffee its energy jolt, contains nitrogen. ![]() ![]() ![]() Professor Bandosz realized that our modern coffee culture could supply an abundant source of eco-friendly organic waste. Much like the grains of charcoal packed into the filter of a tabletop water pitcher, her filters use a form of charcoal called "activated carbon."Ĭarbon producers already use materials like coal, wood, peat, fruit pits, and coconut shells to make filters. Teresa Bandosz, CCNY professor of chemistry and chemical engineering develops and tests materials that scrub toxic gases like hydrogen sulfide from air in industrial facilities and pollution control plants. In research to develop a novel, eco-friendly filter to remove toxic gases from the air, scientists at The City College of New York (CCNY) found that a material made from used coffee grounds can sop up hydrogen sulfide gas, the chemical that makes raw sewage stinky.ĭr.
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