A sand filter, or "filtration basin", is a stormwater quality treatment system that works by using a two-component clarification system: the first is a sediment forebay for settling large particles ...

New research could help settle questions about one of biochar's biggest benefits -- the seemingly contradictory ability to make clay soils drain faster and sandy soils drain slower. As more gardeners ...

Researchers at the University of Delaware have transformed discarded corn cobs and other agricultural byproducts into high performance biochar filters that capture both ammonia and tiny plastic ...