Journal
ENERGY TECHNOLOGY
Volume 5, Issue 1, Pages 151-171Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201600183
Keywords
biomass; nitrogen; heterocycles; pyrolysis; renewable resources
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Funding
- Spanish MINECO [CTQ201347260-R]
- Aragon Government (GPT group, Thermochemical Processes Group)
- European Social Fund
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A procedure to analyze sewage sludge (SS) pyrolysis liquids based on solvent fractionation has been developed. Pyrolysis liquids are separated into three different fractions: heptane soluble (Hep-sol), dichloromethane soluble (DCM-sol), and hydrochloric acid soluble (HCl-sol). Diverse techniques (GC-MS, UPLC-TOF-MS) were employed to qualitatively and quantitatively analyze liquid fractions to assess the potential production of value-added chemicals. Aliphatic hydrocarbons, aliphatic nitriles, and steroids were mostly separated in the Hep-sol fraction, phenols and fatty acids in the DCMsol fraction, and carboxylic acids and amides in the HCl-sol fraction. The largest production was obtained for ammonia (10-14 kg per tonne of SS) and a-olefins (8-9 kg per tonne of SS). The potential production of some of these valueadded chemicals from SS pyrolysis liquid was compared with their current European production. In the case of a-olefins, 16% of their European production could be achieved by SS pyrolysis.
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