| Autor: |
Marrone PA; Leidos, Inc., Framingham, MA 01778, USA., Elliott DC, Billing JM, Hallen RT, Hart TR, Kadota P, Moeller JC, Randel MA, Schmidt AJ |
| Jazyk: |
angličtina |
| Zdroj: |
Water environment research : a research publication of the Water Environment Federation [Water Environ Res] 2018 Apr 01; Vol. 90 (4), pp. 329-342. |
| DOI: |
10.2175/106143017X15131012152861 |
| Abstrakt: |
Hydrothermal Liquefaction (HTL) and Catalytic Hydrothermal Gasification (CHG) proof-of-concept bench-scale tests were performed to assess the potential of hydrothermal treatment for handling municipal wastewater sludge. HTL tests were conducted at 300 to 350 °C and 20 MPa on three different feeds: primary sludge, secondary sludge, and digested solids. Corresponding CHG tests were conducted at 350 °C and 20 MPa on the HTL aqueous phase output using a ruthenium-based catalyst. Biocrude yields ranged from 25 to 37%. Biocrude composition and quality were comparable to biocrudes generated from algae feeds. Subsequent hydrotreating of biocrude resulted in a product with comparable physical and chemical properties to crude oil. CHG product gas methane yields on a carbon basis ranged from 47 to 64%. Siloxane concentrations in the CHG product gas were below engine limits. The HTL-CHG process resulted in a chemical oxygen demand (COD) reduction of > 99.9% and a reduction in residual solids for disposal of 94 to 99%. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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