Abstract
Coal pyrolysis wastewater has high chemical oxygen demand (COD) and ammonia nitrogen (NH3-N) contents, which seriously endanger human health and environment. In this work, supercritical water oxidation attempted to dispose coal pyrolysis wastewater. The results showed that the removal rates of COD and NH3-N were significantly improved with the increase of reaction temperature, oxidation coefficient, residence time and initial COD concentration. Residence time and reaction temperature played more important roles in organic matter degradation, and their extremum differences in orthogonal tests were 6.8% and 2.6%, respectively. The supercritical water oxidation processes of the N-containing compound 2-(N-Morpholino)ethanesulfonic acid in coal pyrolysis wastewater were speculated to mainly include two reaction pathways, in which large amounts of hexadecane, heptadecane and butyramide were found in the second pathway.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
