Biobattery: Conversion of Sewage Sludge to Engine Oil and Electricity


Published Date : Mar 17, 2015

A group of scientists and researchers from a Germany based institute for energy and environment have successfully been able to improve and enhance biogas plants efficiency. They have developed a biobattery process which apart from supplying heat and electricity also supplies high standard products such as vegetable carbon, oil, and gas. These materials can be used as and when needed, like, for the production of electricity, or as an aviation or marine fuel, fertilizers, and fuel mixture. 

These can also provide simple basic materials meant for chemical industries. Biobattery is primarily modular and contains a group of ecofriendly technologies which include thermal storage, biogas plants, and engines and carburetors for producing electricity. This is based on the principle of TCR (Thermo-catalytic reforming). With the help of this, the scientists and specialists convert carbons from organic substances such as animal excrement, scrap wood, wastes of industrial biomass, straw, sewage sludge, and fermentation residue derived from bioethanol production and biogas plants. This results in biomass cokes, gas, and oil. Researchers state that the biobattery’s main advantage is that several types of raw materials can be utilized efficiently which otherwise are mostly disposed off. In fact, the cost of disposing of these materials is quite costly. 

Researchers are trying to demonstrate that this can be applied and operated in a pilot facility/plant that utilizes close to 30 kilograms of residues of fermentation per hour. The raw inputs first have to through a special sluice without the supply of oxygen and goes into a screw that is continuously rotating. The material there gets heated and is broken down to biochar and vapors that are highly volatile.