Lignocellulose biodegradation in the biodrying process of sewage sludge and sawdust

Han-Yan Zhang, Thomas Krafft, Ding Gao, Guo-Di Zheng, Lu Cai*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

28 Citations (Web of Science)

Abstract

Lignocellulose degradation is important when applying biodrying treatment to sewage sludge intended for land use. This study investigated the lignocellulose degradation in the biodrying of sewage sludge and sawdust. The experiment analyzed lignocellulose content, lignocellulase activity, humic substances, and fungal communities. After biodrying, lignin, cellulose, and hemicellulose degradation rates were 48.4, 38.8, and 45.0%, respectively. Carboxymethyl cellulase, lignin peroxidase, and xylanase played key roles. During the thermophilic phase, more than 80% of the microorganisms in the sample contributing to lignocellulose degradation were Ascomycota. The lignocellulose degradation and a rate of increase in humic acid/fulvic acid of 380% benefit land use of biodrying product.
Original languageEnglish
Pages (from-to)316-324
Number of pages9
JournalDrying Technology
Volume36
Issue number3
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Biodrying
  • fungal communities
  • humic substances
  • lignocellulase activity
  • lignocellulose degradation
  • sewage sludge
  • PHANEROCHAETE-CHRYSOSPORIUM
  • LIGNIN DEGRADATION
  • HUMIC SUBSTANCES
  • MOISTURE-CONTENT
  • PARTICLE-SIZE
  • BULKING AGENT
  • WASTE
  • COMPOST
  • ENERGY
  • STRAW

Cite this