Mechanisms of water interaction with pore systems of hydrochar and pyrochar from poplar forestry waste.
Identifieur interne : 002141 ( Main/Exploration ); précédent : 002140; suivant : 002142Mechanisms of water interaction with pore systems of hydrochar and pyrochar from poplar forestry waste.
Auteurs : Pellegrino Conte [Italie] ; Ulrich M. Hanke ; Valentina Marsala ; Giulia Cim ; Giuseppe Alonzo ; Bruno GlaserSource :
- Journal of agricultural and food chemistry [ 1520-5118 ] ; 2014.
Descripteurs français
- KwdFr :
- MESH :
- analyse : Déchets.
- composition chimique : Charbon de bois, Eau, Populus.
- Porosité, Science forêt, Spectroscopie par résonance magnétique, Température.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Waste Products.
- chemical , chemistry : Charcoal, Water.
- chemistry : Populus.
- Forestry, Magnetic Resonance Spectroscopy, Porosity, Temperature.
Abstract
The aim of this study was to understand the water-surface interactions of two chars obtained by gasification (pyrochar) and hydrothermal carbonization (hydrochar) of a poplar biomass. The two samples revealed different chemical compositions as evidenced by solid state (13)C NMR spectroscopy. In fact, hydrochar resulted in a lignin-like material still containing oxygenated functionalities. Pyrochar was a polyaromatic system in which no heteronuclei were detected. After saturation with water, hydrochar and pyrochar were analyzed by fast field cycling (FFC) NMR relaxometry. Results showed that water movement in hydrochar was mainly confined in very small pores. Conversely, water movement in pyrochar led to the conclusion that a larger number of transitional and very large pores were present. These results were confirmed by porosity evaluation derived from gas adsorption. Variable-temperature FFC NMR experiments confirmed a slow-motion regime due to a preferential diffusion of water on the solid surface. Conversely, the higher number of large pores in pyrochar allowed slow movement only up to 50 °C. As the temperature was raised to 80 °C, water interactions with the pore surface became weaker, thereby allowing a three-dimensional water exchange with the bulk liquid. This paper has shown that pore size distribution was more important than chemical composition in affecting water movement in two chemically different charred systems.
DOI: 10.1021/jf5010034
PubMed: 24814907
Affiliations:
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Hanke</name></author><author><name sortKey="Marsala, Valentina" sort="Marsala, Valentina" uniqKey="Marsala V" first="Valentina" last="Marsala">Valentina Marsala</name></author><author><name sortKey="Cim, Giulia" sort="Cim, Giulia" uniqKey="Cim G" first="Giulia" last="Cim">Giulia Cim</name></author><author><name sortKey="Alonzo, Giuseppe" sort="Alonzo, Giuseppe" uniqKey="Alonzo G" first="Giuseppe" last="Alonzo">Giuseppe Alonzo</name></author><author><name sortKey="Glaser, Bruno" sort="Glaser, Bruno" uniqKey="Glaser B" first="Bruno" last="Glaser">Bruno Glaser</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2014">2014</date><idno type="RBID">pubmed:24814907</idno><idno type="pmid">24814907</idno><idno type="doi">10.1021/jf5010034</idno><idno type="wicri:Area/Main/Corpus">002191</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">002191</idno><idno type="wicri:Area/Main/Curation">002191</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">002191</idno><idno type="wicri:Area/Main/Exploration">002191</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Mechanisms of water interaction with pore systems of hydrochar and pyrochar from poplar forestry waste.</title><author><name sortKey="Conte, Pellegrino" sort="Conte, Pellegrino" uniqKey="Conte P" first="Pellegrino" last="Conte">Pellegrino Conte</name><affiliation wicri:level="1"><nlm:affiliation>Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo , v.le delle Scienze edificio 4, 90128 Palermo, Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo , v.le delle Scienze edificio 4, 90128 Palermo</wicri:regionArea><wicri:noRegion>90128 Palermo</wicri:noRegion></affiliation></author><author><name sortKey="Hanke, Ulrich M" sort="Hanke, Ulrich M" uniqKey="Hanke U" first="Ulrich M" last="Hanke">Ulrich M. Hanke</name></author><author><name sortKey="Marsala, Valentina" sort="Marsala, Valentina" uniqKey="Marsala V" first="Valentina" last="Marsala">Valentina Marsala</name></author><author><name sortKey="Cim, Giulia" sort="Cim, Giulia" uniqKey="Cim G" first="Giulia" last="Cim">Giulia Cim</name></author><author><name sortKey="Alonzo, Giuseppe" sort="Alonzo, Giuseppe" uniqKey="Alonzo G" first="Giuseppe" last="Alonzo">Giuseppe Alonzo</name></author><author><name sortKey="Glaser, Bruno" sort="Glaser, Bruno" uniqKey="Glaser B" first="Bruno" last="Glaser">Bruno Glaser</name></author></analytic><series><title level="j">Journal of agricultural and food chemistry</title><idno type="eISSN">1520-5118</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Charcoal (chemistry)</term><term>Forestry (MeSH)</term><term>Magnetic Resonance Spectroscopy (MeSH)</term><term>Populus (chemistry)</term><term>Porosity (MeSH)</term><term>Temperature (MeSH)</term><term>Waste Products (analysis)</term><term>Water (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Charbon de bois (composition chimique)</term><term>Déchets (analyse)</term><term>Eau (composition chimique)</term><term>Populus (composition chimique)</term><term>Porosité (MeSH)</term><term>Science forêt (MeSH)</term><term>Spectroscopie par résonance magnétique (MeSH)</term><term>Température (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Waste Products</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Charcoal</term><term>Water</term></keywords><keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Déchets</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Charbon de bois</term><term>Eau</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Forestry</term><term>Magnetic Resonance Spectroscopy</term><term>Porosity</term><term>Temperature</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Porosité</term><term>Science forêt</term><term>Spectroscopie par résonance magnétique</term><term>Température</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The aim of this study was to understand the water-surface interactions of two chars obtained by gasification (pyrochar) and hydrothermal carbonization (hydrochar) of a poplar biomass. The two samples revealed different chemical compositions as evidenced by solid state (13)C NMR spectroscopy. In fact, hydrochar resulted in a lignin-like material still containing oxygenated functionalities. Pyrochar was a polyaromatic system in which no heteronuclei were detected. After saturation with water, hydrochar and pyrochar were analyzed by fast field cycling (FFC) NMR relaxometry. Results showed that water movement in hydrochar was mainly confined in very small pores. Conversely, water movement in pyrochar led to the conclusion that a larger number of transitional and very large pores were present. These results were confirmed by porosity evaluation derived from gas adsorption. Variable-temperature FFC NMR experiments confirmed a slow-motion regime due to a preferential diffusion of water on the solid surface. Conversely, the higher number of large pores in pyrochar allowed slow movement only up to 50 °C. As the temperature was raised to 80 °C, water interactions with the pore surface became weaker, thereby allowing a three-dimensional water exchange with the bulk liquid. This paper has shown that pore size distribution was more important than chemical composition in affecting water movement in two chemically different charred systems. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24814907</PMID><DateCompleted><Year>2014</Year><Month>11</Month><Day>03</Day></DateCompleted><DateRevised><Year>2014</Year><Month>05</Month><Day>28</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1520-5118</ISSN><JournalIssue CitedMedium="Internet"><Volume>62</Volume><Issue>21</Issue><PubDate><Year>2014</Year><Month>May</Month><Day>28</Day></PubDate></JournalIssue><Title>Journal of agricultural and food chemistry</Title><ISOAbbreviation>J Agric Food Chem</ISOAbbreviation></Journal><ArticleTitle>Mechanisms of water interaction with pore systems of hydrochar and pyrochar from poplar forestry waste.</ArticleTitle><Pagination><MedlinePgn>4917-23</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1021/jf5010034</ELocationID><Abstract><AbstractText>The aim of this study was to understand the water-surface interactions of two chars obtained by gasification (pyrochar) and hydrothermal carbonization (hydrochar) of a poplar biomass. The two samples revealed different chemical compositions as evidenced by solid state (13)C NMR spectroscopy. In fact, hydrochar resulted in a lignin-like material still containing oxygenated functionalities. Pyrochar was a polyaromatic system in which no heteronuclei were detected. After saturation with water, hydrochar and pyrochar were analyzed by fast field cycling (FFC) NMR relaxometry. Results showed that water movement in hydrochar was mainly confined in very small pores. Conversely, water movement in pyrochar led to the conclusion that a larger number of transitional and very large pores were present. These results were confirmed by porosity evaluation derived from gas adsorption. Variable-temperature FFC NMR experiments confirmed a slow-motion regime due to a preferential diffusion of water on the solid surface. Conversely, the higher number of large pores in pyrochar allowed slow movement only up to 50 °C. As the temperature was raised to 80 °C, water interactions with the pore surface became weaker, thereby allowing a three-dimensional water exchange with the bulk liquid. This paper has shown that pore size distribution was more important than chemical composition in affecting water movement in two chemically different charred systems. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Conte</LastName><ForeName>Pellegrino</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo , v.le delle Scienze edificio 4, 90128 Palermo, Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hanke</LastName><ForeName>Ulrich M</ForeName><Initials>UM</Initials></Author><Author ValidYN="Y"><LastName>Marsala</LastName><ForeName>Valentina</ForeName><Initials>V</Initials></Author><Author ValidYN="Y"><LastName>Cimò</LastName><ForeName>Giulia</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Alonzo</LastName><ForeName>Giuseppe</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Glaser</LastName><ForeName>Bruno</ForeName><Initials>B</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>05</Month><Day>14</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Agric Food Chem</MedlineTA><NlmUniqueID>0374755</NlmUniqueID><ISSNLinking>0021-8561</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D014866">Waste Products</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="C540010">biochar</NameOfSubstance></Chemical><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical><Chemical><RegistryNumber>16291-96-6</RegistryNumber><NameOfSubstance UI="D002606">Charcoal</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002606" MajorTopicYN="N">Charcoal</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D016468" MajorTopicYN="N">Forestry</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009682" MajorTopicYN="N">Magnetic Resonance Spectroscopy</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D016062" MajorTopicYN="N">Porosity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013696" MajorTopicYN="N">Temperature</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014866" MajorTopicYN="N">Waste Products</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="Y">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>5</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>5</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>11</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24814907</ArticleId><ArticleId IdType="doi">10.1021/jf5010034</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Italie</li></country></list><tree><noCountry><name sortKey="Alonzo, Giuseppe" sort="Alonzo, Giuseppe" uniqKey="Alonzo G" first="Giuseppe" last="Alonzo">Giuseppe Alonzo</name><name sortKey="Cim, Giulia" sort="Cim, Giulia" uniqKey="Cim G" first="Giulia" last="Cim">Giulia Cim</name><name sortKey="Glaser, Bruno" sort="Glaser, Bruno" uniqKey="Glaser B" first="Bruno" last="Glaser">Bruno Glaser</name><name sortKey="Hanke, Ulrich M" sort="Hanke, Ulrich M" uniqKey="Hanke U" first="Ulrich M" last="Hanke">Ulrich M. Hanke</name><name sortKey="Marsala, Valentina" sort="Marsala, Valentina" uniqKey="Marsala V" first="Valentina" last="Marsala">Valentina Marsala</name></noCountry><country name="Italie"><noRegion><name sortKey="Conte, Pellegrino" sort="Conte, Pellegrino" uniqKey="Conte P" first="Pellegrino" last="Conte">Pellegrino Conte</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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