Fertiliser from egg shells

Here’s a piece of good news. We recently reported on research in the United States which is looking to turn chicken feathers into fibre for fabrics. Now, Brazilian researchers have developed an ecological fertiliser based on egg shells.

Poultry World reports that the fertiliser, an alternative to chemical fertilisers, is developed by “mechanochemical milling in which materials are transformed through thermal energy and friction”.

According to researchers, almost 6 million tonnes of egg shells are produced worldwide annually.

“We use waste, such as egg shells, which are rich in calcium, or asbestos, which is a toxic waste,” said one of the researchers.

Great idea, but perhaps there’s more controversy ahead.