Now,’bio-battery’ that runs on waste paper

The process is unlike conventional batteries -- and initially at least,much more like the action of a digestive system.

Sony has developed a battery that can digest waste paper and turn it into energy.

In 2007,the company demonstrated a Walkman that used a bio battery — an organic battery that generates electricity by digesting food,just like humans do.

But the companys latest development shows off a much more useful product,the Daily Mail reported.

The prototype — on show at Eco-Products 2011 in Tokyo,shows how it could be possible to use enzymes to break down waste paper into a fuel we can use. The prototype generates enough energy to power a (very) small fan.

The process is unlike conventional batteries — and initially at least,much more like the action of a digestive system.

A digestive enzyme,cellulase,breaks down the cellulose in paper into glucose,a sugar that Sonys bio batteries can use as fuel.