Sustainable Pyrolytic Production of Zerovalent Iron

dc.contributor.author Lawrinenko, Michael
dc.contributor.author Laird, David
dc.contributor.author van Leeuwen, Johannes
dc.contributor.department Food Science and Human Nutrition
dc.contributor.department Civil, Construction and Environmental Engineering
dc.contributor.department Agronomy
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-18T09:11:39.000
dc.date.accessioned 2020-06-30T01:12:02Z
dc.date.available 2020-06-30T01:12:02Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2017
dc.date.issued 2017-01-01
dc.description.abstract <p>Pyrolysis of biorenewable feedstocks and iron oxides is potentially a greener and more sustainable pathway to producing zerovalent iron (ZVI) for environmental rehabilitation. The resulting biochar-zerovalent iron (BC-ZVI) also shows improved remediation kinetics of trichloroethylene over conventional ZVI. Understanding the transformations of iron to ZVI and the influence of feedstock chemistry on ZVI is critical to the production of BC-ZVI and has not been reported previously. BC-ZVI production was studied by one-step pyrolysis of cellulose, corn stover, dried distillers’ grain, red oak, and switchgrass pretreated with FeCl3. Pyrolysis at 900 °C effectively reduced Fe to ZVI with most feedstocks; however, the association of silicon (Si) and phosphorus (P) with Fe resulted in formation of fayalite and Fe phosphates and phosphides, which limited ZVI production efficiency and/or facilitated corrosion of ZVI. Dispersion of ZVI phases on biochar surfaces and association with Si facilitated oxidation of ZVI due to greater accessibility to oxygen and enhanced corrodibility of ZVI in association with fayalite. Feedstocks low in Si and P such as cellulose and red oak yield BC-ZVI suitable for environmental applications.</p>
dc.description.comments <p>Reprinted with permission from <em>ACS Sustainable Chemistry and Engineering </em>5 (2017): 767, doi:<a href="http://dx.doi.org/10.1021/acssuschemeng.6b02105" target="_blank">10.1021/acssuschemeng.6b02105</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ccee_pubs/116/
dc.identifier.articleid 1114
dc.identifier.contextkey 10041493
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ccee_pubs/116
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/13755
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_pubs/116/0-2016_vanLeeuwen_SustainablePyrolytic_License.pdf|||Fri Jan 14 18:54:02 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/ccee_pubs/116/2016_vanLeeuwen_SustainablePyrolytic.pdf|||Fri Jan 14 18:54:04 UTC 2022
dc.source.uri 10.1021/acssuschemeng.6b02105
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Biochar zerovalent iron
dc.subject.keywords Pyrolysis
dc.subject.keywords Cellulose
dc.subject.keywords Corn stover
dc.subject.keywords Dried distillers’ grain
dc.subject.keywords Red oak
dc.subject.keywords Switchgrass
dc.subject.keywords Trichloroethylene remediation
dc.title Sustainable Pyrolytic Production of Zerovalent Iron
dc.type article
dc.type.genre article
dspace.entity.type Publication
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