Articles producció científica> Enginyeria Química

Influence of catalysts on the hydrothermal liquefaction of municipal primary sludge: Upgrading to a higher quality biocrude

  • Identification data

    Identifier: imarina:9369662
    Authors:
    Cheikhwafa, JackyTorrens, EstherBengoa, Christophe
    Abstract:
    Effect of homogeneous and heterogeneous catalysts on hydrothermal liquefaction of primary sludge was studied. Biocrude, biochar, aqueous phase and biogas were all affected, in terms of quantity and quality. HTL without any catalyst attained a biocrude yield of 37.7 % (w/w VS ). The best improvements in biocrude yield are observed with CuSO 4 (10 %), 42.20 % (w/w VS ) and TiO 2 (20 %), 41.90 % (w/w VS ). All experiments with catalyst produced a biocrude with HHV higher than 30 MJ/kg and with carbon content higher than 60 %. The analysis demonstrated that the major fraction of biocrude were asphaltenes, the heavier phase. While, the light phase, oils, in most of the cases, contained more saturates than polars. Biochar and aqueous phase were recuperated with high organic contents, that enables their usages in further applications. Even though gas fractions were small, their compositions varied between CO, CO 2 and hydrocarbons. Catalysts were normally recuperated with the solid phase, except some cases due to their particle sizes. Most of the ashes of primary sludge were transferred to biochar. Some parts of them went to the aqueous phase and biocrude during separation process.
  • Others:

    Author, as appears in the article.: Cheikhwafa, Jacky; Torrens, Esther; Bengoa, Christophe
    Department: Enginyeria Química
    URV's Author/s: Bengoa, Christophe José / Cheikhwafa, Jacky / Torrens Serrahima, Esther
    Keywords: Waste-water Temperature Sewage-sludge Process optimization Primary sludge Microalgae Hydrothermal liquefaction Homogeneous and heterogeneous catalysts Biocrud Bio-oil Alga
    Abstract: Effect of homogeneous and heterogeneous catalysts on hydrothermal liquefaction of primary sludge was studied. Biocrude, biochar, aqueous phase and biogas were all affected, in terms of quantity and quality. HTL without any catalyst attained a biocrude yield of 37.7 % (w/w VS ). The best improvements in biocrude yield are observed with CuSO 4 (10 %), 42.20 % (w/w VS ) and TiO 2 (20 %), 41.90 % (w/w VS ). All experiments with catalyst produced a biocrude with HHV higher than 30 MJ/kg and with carbon content higher than 60 %. The analysis demonstrated that the major fraction of biocrude were asphaltenes, the heavier phase. While, the light phase, oils, in most of the cases, contained more saturates than polars. Biochar and aqueous phase were recuperated with high organic contents, that enables their usages in further applications. Even though gas fractions were small, their compositions varied between CO, CO 2 and hydrocarbons. Catalysts were normally recuperated with the solid phase, except some cases due to their particle sizes. Most of the ashes of primary sludge were transferred to biochar. Some parts of them went to the aqueous phase and biocrude during separation process.
    Thematic Areas: Saúde coletiva Química Organic chemistry Odontología Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências General chemical engineering Fuel technology Farmacia Ensino Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy & fuels Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Biodiversidade Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: jacky.cheikhwafa@urv.cat jacky.cheikhwafa@urv.cat christophe.bengoa@urv.cat esther.torrens@urv.cat esther.torrens@urv.cat
    Author identifier: 0000-0001-9160-5010
    Record's date: 2024-08-03
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0016236124008639
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Fuel. 369 131715-
    APA: Cheikhwafa, Jacky; Torrens, Esther; Bengoa, Christophe (2024). Influence of catalysts on the hydrothermal liquefaction of municipal primary sludge: Upgrading to a higher quality biocrude. Fuel, 369(), 131715-. DOI: 10.1016/j.fuel.2024.131715
    Article's DOI: 10.1016/j.fuel.2024.131715
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2024
    Publication Type: Journal Publications
  • Keywords:

    Chemical Engineering (Miscellaneous),Energy & Fuels,Energy Engineering and Power Technology,Engineering, Chemical,Fuel Technology,Organic Chemistry
    Waste-water
    Temperature
    Sewage-sludge
    Process optimization
    Primary sludge
    Microalgae
    Hydrothermal liquefaction
    Homogeneous and heterogeneous catalysts
    Biocrud
    Bio-oil
    Alga
    Saúde coletiva
    Química
    Organic chemistry
    Odontología
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Geociências
    General chemical engineering
    Fuel technology
    Farmacia
    Ensino
    Engineering, chemical
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Energy engineering and power technology
    Energy & fuels
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
    Biotecnología
    Biodiversidade
    Astronomia / física
  • Documents:

  • Cerca a google

    Search to google scholar