Opportunities regarding the use of technologies of energy recovery from sewage sludge

Abstract Based on the global need to efficiently eliminate highly produced amounts of sewage sludge, alternative technologies are required be practically developed. Reduction sludge waste quantities with energy recovery is most important and modern practice, least possible impact environment. Appropriate for treating disposal currently considered: incineration, gasification pyrolysis. The main products generated during pyrolysis process bio-gas, bio-oil bio-residue, providing sustainable fuels/ biofuels adsorbents. Compared other methods has advantages in terms environment: small quantities, low emissions, level heavy metals. From a technological point view, efficient relation its final products, oil, gas solid residue that can transformed into CO 2 adsorbent help chemical thermal activation processes. incineration number disadvantages both environmentally technologically: organic pollutants, metals, toxic pollutants ash resulting from combustion needs process. A comparison different types elimination described present paper. Article Highlights Sewage increasing which requires recovery, clean way cleanest method recovery. Pyrolysis bio-oil, syngas biochar, used as fuels fossil fuels. advantageous view obtained environment,