Coffee grounds can remove the toxic smell of dirt.
There is good news for coffee lovers around the world: the large amount of coffee grounds they throw away helps remove the toxic smell of dirt. In the American Journal of Hazardous Materials, researchers at the City University of New York published a study saying that coffee grounds can absorb hydrogen sulfide gases, which are often caused by the fact that the dirt smells so bad. It is now a common practice to use activated carbon in treatment facilities to absorb hydrogen sulfides from the dirt. But if activated carbon is replaced with coffee grounds, it absorbs sulfur particularly well because of a key ingredient in coffee: caffeine. The researchers carbonized coffee grounds, water and zinc after a mixture of drying. Caffeine contains nitrogen, which increases carbon's ability to remove sulfur, said study author Teresa J. Bandosz, a chemist and chemical engineer at the City University of New York.
- Prev
Drink two cups of coffee a day.
Coffee is a double edged sword. Some experts believe coffee is a dangerous irritant, others believe drinking coffee saves lives. A new Swedish study published in the American Journal of Epidemiology found that drinking two cups of coffee a day significantly reduced the risk of stroke. Drinking two cups of coffee a day can significantly reduce the risk of stroke, new research has found.
- Next
Coffee knowledge
Coffee (scientific name: Coffea arabica), also known as coffee tree, Arabica coffee, etc., is the national flower of Yemen. Before the 6th century in the park, Yemen was called Arab, so the coffee trees transported from them to other places were also called Arabian coffee trees. The name coffee comes from the Arabic word "Qahwah", which means plant drink. Later, coffee spread all over the world.
Related
- Beginners will see the "Coffee pull flower" guide!
- What is the difference between ice blog purified milk and ordinary milk coffee?
- Why is the Philippines the largest producer of crops in Liberia?
- For coffee extraction, should the fine powder be retained?
- How does extracted espresso fill pressed powder? How much strength does it take to press the powder?
- How to make jasmine cold extract coffee? Is the jasmine + latte good?
- Will this little toy really make the coffee taste better? How does Lily Drip affect coffee extraction?
- Will the action of slapping the filter cup also affect coffee extraction?
- What's the difference between powder-to-water ratio and powder-to-liquid ratio?
- What is the Ethiopian local species? What does it have to do with Heirloom native species?