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Title: Modularized Production of Value-Added Products and Fuels from Distributed Waste Carbon-Rich Feedstocks

Abstract

Here, we have adapted and characterized electrolysis reactors to complement the conversion of regional- and community-scale quantities of waste into fuel or chemicals. The overall process must be able to contend with a wide range of feedstocks, must be inherently safe, and should not rely on external facilities for co-reactants or heat rejection and supply. Our current approach is based on the upgrading of bio-oil produced by the hydrothermal liquefaction (HTL) of carbon-containing waste feedstocks. HTL can convert a variety of feedstocks into a bio-oil that requires much less upgrading than the products of other ways of deconstructing biomass. We are now investigating the use of electrochemical processes for the further conversions needed to transform the bio-oil from HTL into fuel or higher value chemicals. We, and others, have shown that electrochemical reduction can offer adequate reaction rates and at least some of the necessary generality. In addition, an electrochemical reactor necessarily both oxidizes (removes electrons) on one side of the reactor and reduces (adds electrons) on the other side. Therefore, the two types of reactions could, in principle, be coupled to upgrade the bio-oil and simultaneously polish the water that is employed as a reactant and a carrier inmore » the upstream HTL. Here, we overview a notional process, the possible conversion chemistry, and the economics of an HTL-electrochemical process.« less

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1564371
Alternate Identifier(s):
OSTI ID: 1439098; OSTI ID: 1509980
Report Number(s):
PNNL-SA-131136; PNNL-SA-135520
Journal ID: ISSN 2095-8099; S2095809917306860; PII: S2095809917306860
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Published Article
Journal Name:
Engineering
Additional Journal Information:
Journal Name: Engineering Journal Volume: 4 Journal Issue: 3; Journal ID: ISSN 2095-8099
Publisher:
Elsevier
Country of Publication:
China
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Reducing generation and discharge of pollutants; Chemical engineering

Citation Formats

Weber, Robert S., and Holladay, Johnathan E. Modularized Production of Value-Added Products and Fuels from Distributed Waste Carbon-Rich Feedstocks. China: N. p., 2018. Web. https://doi.org/10.1016/j.eng.2018.05.012.
Weber, Robert S., & Holladay, Johnathan E. Modularized Production of Value-Added Products and Fuels from Distributed Waste Carbon-Rich Feedstocks. China. https://doi.org/10.1016/j.eng.2018.05.012
Weber, Robert S., and Holladay, Johnathan E. Fri . "Modularized Production of Value-Added Products and Fuels from Distributed Waste Carbon-Rich Feedstocks". China. https://doi.org/10.1016/j.eng.2018.05.012.
@article{osti_1564371,
title = {Modularized Production of Value-Added Products and Fuels from Distributed Waste Carbon-Rich Feedstocks},
author = {Weber, Robert S. and Holladay, Johnathan E.},
abstractNote = {Here, we have adapted and characterized electrolysis reactors to complement the conversion of regional- and community-scale quantities of waste into fuel or chemicals. The overall process must be able to contend with a wide range of feedstocks, must be inherently safe, and should not rely on external facilities for co-reactants or heat rejection and supply. Our current approach is based on the upgrading of bio-oil produced by the hydrothermal liquefaction (HTL) of carbon-containing waste feedstocks. HTL can convert a variety of feedstocks into a bio-oil that requires much less upgrading than the products of other ways of deconstructing biomass. We are now investigating the use of electrochemical processes for the further conversions needed to transform the bio-oil from HTL into fuel or higher value chemicals. We, and others, have shown that electrochemical reduction can offer adequate reaction rates and at least some of the necessary generality. In addition, an electrochemical reactor necessarily both oxidizes (removes electrons) on one side of the reactor and reduces (adds electrons) on the other side. Therefore, the two types of reactions could, in principle, be coupled to upgrade the bio-oil and simultaneously polish the water that is employed as a reactant and a carrier in the upstream HTL. Here, we overview a notional process, the possible conversion chemistry, and the economics of an HTL-electrochemical process.},
doi = {10.1016/j.eng.2018.05.012},
journal = {Engineering},
number = 3,
volume = 4,
place = {China},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.eng.2018.05.012

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: A skid-mountable HTL unit developed at PNNL. The carboy pictured at front right has a volume of about 1 m3.

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