For several months now, Suzanne Noubissie, a housewife in Douala, Cameroon's economic capital, has been swapping her coal-burning stove for one that uses a recycled oil. The device, designed by a ...

particularly if you’re currently relying on a costly oil or electric heating system. While pellet stoves are cleaner-burning than a fireplace or traditional wood stove, they do release more air ...

"When old engine oil is burned at very high temperatures in an oxygenated system, the combustion process becomes more efficient and cleaner compared to traditional burning methods," he says.

For several months now, Suzanne Noubissie, a housewife in Douala, Cameroon's economic capital, has been swapping her coal-burning stove for one that uses a recycled oil. The device, designed by a ...