RETRACTED ARTICLE: Upgrading of anaerobic digestion of thickened waste activated sludge by microwave-assisted alkali pretreatment

Yong Zhi Chi, Xue Ning Fei, Hong Ying Yuan, Shao Po Wang, Gyokuyu Ri, Jian Xing Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pretreatment of thickened waste activated sludge (TWAS) can facilitate the hydrolysis step of mesophilic anaerobic digestion (MAD) and improves the digestibility. This study examined the effects of microwave/alkali pretreatment on TWAS disintegration and its subsequent batch and semi-continuous MAD. The maximum solubilization ratio of volatile suspended solids, 77%, achieved at 210°C with 0.15 g-NaOH/g-TSS and 10 min holding time. In the biochemical methane potential tests, the vials fed with pretreated TWAS produced 18-46% higher biogas compared to the control. The semi-continuous reacter fed with the pretreated TWAS without neutralization was stable, and the VS reductions and methane yield were 21% and 14% higher than those of the control, respectively.

Original languageEnglish
Title of host publication2010 2nd Conference on Environmental Science and Information Application Technology, ESIAT 2010
PublisherIEEE Computer Society
Pages316-320
Number of pages5
ISBN (Print)9781424473885
DOIs
Publication statusPublished - 2010 Jan 1

Publication series

Name2010 2nd Conference on Environmental Science and Information Application Technology, ESIAT 2010
Volume1

Keywords

  • Mesophilic anaerobic digestion
  • Microwave/alkali pretreatment
  • Thickened waste activated sludge

ASJC Scopus subject areas

  • Information Systems and Management
  • Environmental Science(all)

Fingerprint Dive into the research topics of 'RETRACTED ARTICLE: Upgrading of anaerobic digestion of thickened waste activated sludge by microwave-assisted alkali pretreatment'. Together they form a unique fingerprint.

Cite this