Abstract
A dielectric barrier discharge (DBD) pretreatment of waste activated sludge (WAS) was developed for boosting the releasing of organic matter from floc structures and microbial cells. The changes of protein and polysaccharide in different extracellular polymeric substances layers of SCOD releasing from sludge were determined by using three-dimensional fluorescence spectra. Significantly improved cumulative methane production was achieved via enhancing anaerobic digestion, which was 83.5% higher than that of the control. The formed ∙OH radicals play a key role in sludge hydrolysis, thus improving the biodegradability of WAS. Furthermore, high-throughput sequencing analysis showed that DBD pretreatment improved the relative abundances of the main functional microbes with respect to sludge hydrolysis and anaerobic digestion. Therefore, this study verifies the feasibility of DBD pretreatment in sludge hydrolysis and is expected to provide a practical new technology for anaerobic digestion of WAS.
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.
