Water is a basic necessity in every household but how can one differentiate between clean water and dirty water? Bristol Robotics Laboratory at the University of West of England in partnership with other researchers have come up with a low cost sensor in 3D printing technology to detect bacteria in water.

According to Engineering Technology news, the low cost device designed by Scientists from the department of Chemical engineering can be used to determine the quality of drinking water in real time without using expensive lab equipments.

It adds that the sensor contains bacteria that produce a small amount of measurable electric current as they emerge and when bacteria comes into contact with toxins in water, the electric current drops showing that the water is polluted.

Researchers measure bacteria entry in water by inputting a microbial fuel cell that converts chemical energy into electrical energy. 

“The injection of pollutant into the water saw an instant drop in the electric current created and the drop was relative to the amount of toxin present. The current is recovered once the toxin level falls,” adds Engineering Technology News.

In conclusion, other methods used to ascertain water pollution include use of fish or daphnia which is costly, time consuming and cumbersome to reproduce results quickly.

Source: Engineering Technology news




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