Inorganic additives to increase methane generation during anaerobic digestion of livestock manure. A review

Xuna Liu, Luqing Qi, Efthalia Chatzisymeon, Ping Yang, Weiyi Sun, Lina Pang

Research output: Contribution to journalLiterature reviewpeer-review

Abstract

Recycling livestock manure provides energy and prevent pollution, yet actual transformation processes are limited in terms of performance and cost. Here we review inorganic additives used to improve anaerobic digestion. Additives include minerals such as zeolite and magnetite, metals such as bulk and nanoparticles, industrial wastes; and pH-regulating additives. We focus on microbial mechanisms in terms of microbial growth, enzymes, interspecies electron transfer and microbial community, instead of the often reported physico-chemical mechanisms. Porous additives such aszeolites are well suited to removing ammonium. Iron-based metal additives are highly influencing microbial mechanisms.
Original languageEnglish
Pages (from-to)1-26
Number of pages26
JournalEnvironmental Chemistry Letters
Early online date30 Jul 2021
DOIs
Publication statusE-pub ahead of print - 30 Jul 2021

Keywords

  • Anaerobic digestion
  • Livestock manure
  • Iron-based metal additives
  • Microbial community
  • Interspecies electron transfer

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