The sludge is initially treated with an acid, causing it to produce soluble calcium. The urea is then added to that calcium, forming what is known as a cementation solution. Special bacteria are ...

Thanks to a novel process, human urine can be turned into bio-bricks. Robyn Walker Initially, curiosity. Some years ago I read about a US based company called BioMASON that uses the same process we do ...

Chemists in germany have constructed artificial cells with stoppered pores that open for the uptake of calcium ions and then close. The process resembles the functioning of gated calcium channels in ...