Intermittent-vacuum assisted thermophilic co-digestion of corn stover and liquid swine manure: Salinity inhibition

Renchuan Zhang, Erik Anderson, Paul L Chen, Min M Addy, Yanling Cheng, Lu Wang, Yuhuan Liu, R. R Ruan

Research output: Contribution to journalArticle

Abstract

In this study, the effects of Intermittent-Vacuum Stripping (IVS) on activities of methanogenesis in co-digestion of corn stover with liquid swine manure (LSM + CS) under thermophilic anaerobic digestion (TAD) conditions were evaluated. A 65% methanogenesis activity inhibition was observed in pretreated LSM plus corn stover (pLSM + CS), while 60 and 165 mL/L/day CH4 productions were achieved in pLSM + CS and LSM + CS, respectively. The high salinity condition (5.28%) after IVS pretreatment was considered the primary inhibitor in pLSM + CS, while the ammonia (≤600 mg/L), C:N ratio (15.52) and volatile solid loading rate (3 g/kg−1·day−1) didn't show a negative effect on CH4 production. When salinities were increased from 2% to 4% and 8%, 50% and 100% inhibition were observed respectively. The butyrate accumulation was a potential indicator of the non-salinity-inhibition status for methanogenesis in TAD.

LanguageEnglish (US)
Pages16-23
Number of pages8
JournalBioresource Technology
Volume271
DOIs
StatePublished - Jan 1 2019

Fingerprint

Anaerobic digestion
Manures
methanogenesis
digestion
maize
Vacuum
salinity
Butyrates
Liquids
Ammonia
inhibitor
ammonia
liquid manure
anaerobic digestion
effect

Keywords

  • Intermittent-Vacuum Stripping (IVS)
  • Lignocellulose utilization
  • Salinity inhibition
  • Thermophilic anaerobic co-digestion

PubMed: MeSH publication types

  • Journal Article

Cite this

Intermittent-vacuum assisted thermophilic co-digestion of corn stover and liquid swine manure : Salinity inhibition. / Zhang, Renchuan; Anderson, Erik; Chen, Paul L; Addy, Min M; Cheng, Yanling; Wang, Lu; Liu, Yuhuan; Ruan, R. R.

In: Bioresource Technology, Vol. 271, 01.01.2019, p. 16-23.

Research output: Contribution to journalArticle

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