Gaseous emissions during the solid state fermentation of different wastes for enzyme production at pilot scale

Caterina Maulini-Duran, Juliana Abraham, Sheila Rodríguez-Pérez, Alejandra Patricia Cerda Llanos, Pedro Jiménez-Peñalver, Raquel Barrena, Teresa Gea, Adriana Artola, Xavier Font, Antoni Sánchez

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)

Abstract

© 2014 Elsevier Ltd. The emissions of volatile organic compounds (VOC), CH 4 , N 2 O and NH 3 during the solid state fermentation process of some selected wastes to obtain different enzymes have been determined at pilot scale. Orange peel+compost (OP), hair wastes+raw sludge (HW) and winterization residue+raw sludge (WR) have been processed in duplicate in 50L reactors to provide emission factors and to identify the different VOC families present in exhaust gaseous emissions. Ammonia emission from HW fermentation (3.2±0.5kgMg -1 dry matter) and VOC emission during OP processes (18±6kgMg -1 dry matter) should be considered in an industrial application of these processes. Terpenes have been the most emitted VOC family during all the processes although the emission of sulphide molecules during HW SSF is notable. The most emitted compound was dimethyl disulfide in HW and WR processes, and limonene in the SSF of OP.
Original languageEnglish
Pages (from-to)211-218
JournalBioresource Technology
Volume179
DOIs
Publication statusPublished - 1 Mar 2015

Keywords

  • Ammonia
  • Emission factors
  • Methane
  • Solid state fermentation
  • VOC characterization

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