Abstract
In order to apply grinding method for degradation of pentachlorophenol (PCP) to an industrial scale, the proportion of different materials [CaO, SiO2 and CO(NH2)2] and the size of grinding balls were examined. For saving energy and increasing dechlorination efficiency, the rotation speed and grinding time were maintained at relatively low values. At a mass ratio of grinding balls to materials (40:1), PCP was added into a big steel jar (300ml) with other materials to grind at 300r·min−1 for 5h. The results indicated that when PCP was mixed with CaO and SiO2 in a molar ratio of 1:60:60, the best dechlorination of 58.4% was achieved. CO(NH2)2 could not be used as hydrogen donor in the dehalogenation by mechanochemical reaction, since it restrained the dechlorination process. The size of grinding balls has significant effect on the reaction. The experiment with 5mm steel balls indicates that the weight is too light to provide appropriate energy for the reaction, while steel balls of 10 and 15mm could give better dechlorination reaction. It indicates that dechlorination depends on the mass of balls and fill rate.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
