Supercritical water gasification of sewage sludge: gas production and phosphorus recovery

N.Y. Acelas Soto, D.P. Lopez, Derk Willem Frederik Brilman, Sascha R.A. Kersten, A.M.J. Kootstra

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

In this study, the feasibility of the gasification of dewatered sewage sludge in supercritical water (SCW) for energy recovery combined with P-recovery from the solid residue generated in this process was investigated. SCWG temperature (400 °C, 500 °C, 600 °C) and residence time (15 min, 30 min, 60 min) were varied to investigate their effects on gas production and the P recovery by acid leaching. The results show that the dry gas composition for this uncatalyzed gasification of sewage sludge in SCW mainly comprised of CO2, CO, CH4, H2, and some C2–C3 compounds. Higher temperatures and longer residence times favored the production of H2 and CH4. After SCWG, more than 95% of the P could be recovered from the solid residue by leaching with acids. SCWG combined with acid leaching seems an effective method for both energy recovery and high P recovery from sewage sludge.
Original languageEnglish
Pages (from-to)167-175
Number of pages9
JournalBioresource technology
Volume174
DOIs
Publication statusPublished - 2014

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Sewage sludge
Gasification
gas production
Phosphorus
Gases
leaching
phosphorus
Recovery
Water
residence time
acid
Leaching
Acids
water
Carbon Monoxide
gas
gasification
sewage sludge
temperature
Temperature

Keywords

  • METIS-307761
  • IR-95032

Cite this

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title = "Supercritical water gasification of sewage sludge: gas production and phosphorus recovery",
abstract = "In this study, the feasibility of the gasification of dewatered sewage sludge in supercritical water (SCW) for energy recovery combined with P-recovery from the solid residue generated in this process was investigated. SCWG temperature (400 °C, 500 °C, 600 °C) and residence time (15 min, 30 min, 60 min) were varied to investigate their effects on gas production and the P recovery by acid leaching. The results show that the dry gas composition for this uncatalyzed gasification of sewage sludge in SCW mainly comprised of CO2, CO, CH4, H2, and some C2–C3 compounds. Higher temperatures and longer residence times favored the production of H2 and CH4. After SCWG, more than 95{\%} of the P could be recovered from the solid residue by leaching with acids. SCWG combined with acid leaching seems an effective method for both energy recovery and high P recovery from sewage sludge.",
keywords = "METIS-307761, IR-95032",
author = "{Acelas Soto}, N.Y. and D.P. Lopez and Brilman, {Derk Willem Frederik} and Kersten, {Sascha R.A.} and A.M.J. Kootstra",
year = "2014",
doi = "10.1016/j.biortech.2014.10.003",
language = "English",
volume = "174",
pages = "167--175",
journal = "Bioresource technology",
issn = "0960-8524",
publisher = "Elsevier",

}

Supercritical water gasification of sewage sludge: gas production and phosphorus recovery. / Acelas Soto, N.Y.; Lopez, D.P.; Brilman, Derk Willem Frederik; Kersten, Sascha R.A.; Kootstra, A.M.J.

In: Bioresource technology, Vol. 174, 2014, p. 167-175.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Supercritical water gasification of sewage sludge: gas production and phosphorus recovery

AU - Acelas Soto, N.Y.

AU - Lopez, D.P.

AU - Brilman, Derk Willem Frederik

AU - Kersten, Sascha R.A.

AU - Kootstra, A.M.J.

PY - 2014

Y1 - 2014

N2 - In this study, the feasibility of the gasification of dewatered sewage sludge in supercritical water (SCW) for energy recovery combined with P-recovery from the solid residue generated in this process was investigated. SCWG temperature (400 °C, 500 °C, 600 °C) and residence time (15 min, 30 min, 60 min) were varied to investigate their effects on gas production and the P recovery by acid leaching. The results show that the dry gas composition for this uncatalyzed gasification of sewage sludge in SCW mainly comprised of CO2, CO, CH4, H2, and some C2–C3 compounds. Higher temperatures and longer residence times favored the production of H2 and CH4. After SCWG, more than 95% of the P could be recovered from the solid residue by leaching with acids. SCWG combined with acid leaching seems an effective method for both energy recovery and high P recovery from sewage sludge.

AB - In this study, the feasibility of the gasification of dewatered sewage sludge in supercritical water (SCW) for energy recovery combined with P-recovery from the solid residue generated in this process was investigated. SCWG temperature (400 °C, 500 °C, 600 °C) and residence time (15 min, 30 min, 60 min) were varied to investigate their effects on gas production and the P recovery by acid leaching. The results show that the dry gas composition for this uncatalyzed gasification of sewage sludge in SCW mainly comprised of CO2, CO, CH4, H2, and some C2–C3 compounds. Higher temperatures and longer residence times favored the production of H2 and CH4. After SCWG, more than 95% of the P could be recovered from the solid residue by leaching with acids. SCWG combined with acid leaching seems an effective method for both energy recovery and high P recovery from sewage sludge.

KW - METIS-307761

KW - IR-95032

U2 - 10.1016/j.biortech.2014.10.003

DO - 10.1016/j.biortech.2014.10.003

M3 - Article

VL - 174

SP - 167

EP - 175

JO - Bioresource technology

JF - Bioresource technology

SN - 0960-8524

ER -