Assessment of the Production of Value-Added Chemical Compounds from Sewage Sludge Pyrolysis Liquids

作者：Fonts Isabel^*; Navarro Puyuelo Andrea; Ruiz Gomez Nadia; Atienza Martinez Maria; Wisniewsky Alberto; Gea Gloria

来源：Energy Technology, 2017, 5(1): 151-171.

DOI：10.1002/ente.201600183

• biomass
• nitrogen
• heterocycles
• pyrolysis
• renewable resources

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.

• 出版日期2017-1