Performance of layered double hydroxides intercalated with acetate as biodenitrification carbon source: The effects of metal ions and particle size

Li Jiang, Jianyong Liu, Kang Zuo, Lianpai Zou, Yu You Li, Guangren Qian, Zhi Ping Xu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In situ synthesis of layered double hydroxides (LDHs) is an effective way to extract short chain fatty acids (SCFAs) from anaerobic fermentation liquid to be used as carbon source for biodenitrification, but the slow release performance need to be improved. Three layered double hydroxides with different metal cations (Mg-Al, Ni-Al, Ni-Fe) intercalated with acetate (Ac) were successfully prepared in the present study. The release rates decreased in the order of MgAl-LDH > NiAl-LDH > NiFe-LDH, meaning that NiFe-LDH-Ac showed the best slow release performance. The release rate of LDHs decreased greatly along with the increase of particle size. Batch denitrification tests showed that the carbon source utilization efficiency of NiFe-LDH-Ac was 79.9%, which was much higher than that of CH3COONa (48.8%) as control. These results indicate that NiFe-LDH-Ac could be successfully employed as slow release carbon source for biodenitrification.

Original languageEnglish
Pages (from-to)99-103
Number of pages5
JournalBioresource Technology
Volume259
DOIs
Publication statusPublished - 2018 Jul

Keywords

  • Carbon source
  • Denitrification
  • Layered double hydroxides (LDHs)
  • Slow release
  • Utilization efficiency

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Fingerprint Dive into the research topics of 'Performance of layered double hydroxides intercalated with acetate as biodenitrification carbon source: The effects of metal ions and particle size'. Together they form a unique fingerprint.

  • Cite this