The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses

Jussi Rissanen; Henrik Grénman; Chunlin Xu; Jens Krogell; Stefan Willför; Dmitry Murzin; Tapio Salmi

The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses

Jussi Rissanen
, Henrik Grénman^*
, Chunlin Xu
, Jens Krogell
, Stefan Willför
, Dmitry Murzin
, Tapio Salmi

^*Korresponderande författare för detta arbete

Forskningsoutput: Konferensbidrag › Arbetsdokument › Peer review

Sammanfattning

The aqueous extraction of hemicelluloses has gained an increasing interest with new emerging applications for hemicelluloses in the modern forest-based biorefinery concept. The extraction kinetics play a key role in their industrial utilisation. Pressurised hot water extraction of spruce sap wood was investigated in the temperature range 120–170°C using a large liquid-to-solid ratio in an intensified cascade reactor system. The results show significant temperature dependence of the extraction rate, albeit low influence of pH. Moreover, a clear dependence of the hydrolysis rate on the temperature and pH was observed. The molecular mass of the extracted hemicelluloses was influenced by the chip size. A kinetic model was developed for describing the extraction kinetics.

Originalspråk	Engelska
Sidor	416-417
Antal sidor	2
Status	Publicerad - 2012
MoE-publikationstyp	O2 Other
Evenemang	4th Nordic Wood Biorefinery Conference, NWBC 2012 - Helsinki, Finland Varaktighet: 23 okt. 2012 → 25 okt. 2012

Konferens

Konferens	4th Nordic Wood Biorefinery Conference, NWBC 2012
Land/Territorium	Finland
Ort	Helsinki
Period	23/10/12 → 25/10/12

Finansiering

This research was part of the activities at the Åbo Akademi Process Chemistry Centre. This study was financed by Forestcluster Ltd. and the Finnish Funding Agency for Technology and Innovation (Tekes) within the framework of the Future Biorefinery (FuBio) Joint Research 2 programme.

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@conference{ec5593807a17465ca371c4996a7a77fc,

title = "The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses",

abstract = "The aqueous extraction of hemicelluloses has gained an increasing interest with new emerging applications for hemicelluloses in the modern forest-based biorefinery concept. The extraction kinetics play a key role in their industrial utilisation. Pressurised hot water extraction of spruce sap wood was investigated in the temperature range 120{\textendash}170°C using a large liquid-to-solid ratio in an intensified cascade reactor system. The results show significant temperature dependence of the extraction rate, albeit low influence of pH. Moreover, a clear dependence of the hydrolysis rate on the temperature and pH was observed. The molecular mass of the extracted hemicelluloses was influenced by the chip size. A kinetic model was developed for describing the extraction kinetics.",

author = "Jussi Rissanen and Henrik Gr{\'e}nman and Chunlin Xu and Jens Krogell and Stefan Willf{\"o}r and Dmitry Murzin and Tapio Salmi",

note = "Funding Information: This research was part of the activities at the {\AA}bo Akademi Process Chemistry Centre. This study was financed by Forestcluster Ltd. and the Finnish Funding Agency for Technology and Innovation (Tekes) within the framework of the Future Biorefinery (FuBio) Joint Research 2 programme. Publisher Copyright: {\textcopyright} NWBC 2012.All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 4th Nordic Wood Biorefinery Conference, NWBC 2012 ; Conference date: 23-10-2012 Through 25-10-2012",

year = "2012",

language = "English",

pages = "416--417",

}

TY - CONF

T1 - The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses

AU - Rissanen, Jussi

AU - Grénman, Henrik

AU - Xu, Chunlin

AU - Krogell, Jens

AU - Willför, Stefan

AU - Murzin, Dmitry

AU - Salmi, Tapio

N1 - Funding Information: This research was part of the activities at the Åbo Akademi Process Chemistry Centre. This study was financed by Forestcluster Ltd. and the Finnish Funding Agency for Technology and Innovation (Tekes) within the framework of the Future Biorefinery (FuBio) Joint Research 2 programme. Publisher Copyright: © NWBC 2012.All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2012

Y1 - 2012

N2 - The aqueous extraction of hemicelluloses has gained an increasing interest with new emerging applications for hemicelluloses in the modern forest-based biorefinery concept. The extraction kinetics play a key role in their industrial utilisation. Pressurised hot water extraction of spruce sap wood was investigated in the temperature range 120–170°C using a large liquid-to-solid ratio in an intensified cascade reactor system. The results show significant temperature dependence of the extraction rate, albeit low influence of pH. Moreover, a clear dependence of the hydrolysis rate on the temperature and pH was observed. The molecular mass of the extracted hemicelluloses was influenced by the chip size. A kinetic model was developed for describing the extraction kinetics.

AB - The aqueous extraction of hemicelluloses has gained an increasing interest with new emerging applications for hemicelluloses in the modern forest-based biorefinery concept. The extraction kinetics play a key role in their industrial utilisation. Pressurised hot water extraction of spruce sap wood was investigated in the temperature range 120–170°C using a large liquid-to-solid ratio in an intensified cascade reactor system. The results show significant temperature dependence of the extraction rate, albeit low influence of pH. Moreover, a clear dependence of the hydrolysis rate on the temperature and pH was observed. The molecular mass of the extracted hemicelluloses was influenced by the chip size. A kinetic model was developed for describing the extraction kinetics.

UR - https://www.scopus.com/pages/publications/85086398921

M3 - Paper (not published)

AN - SCOPUS:85086398921

SP - 416

EP - 417

T2 - 4th Nordic Wood Biorefinery Conference, NWBC 2012

Y2 - 23 October 2012 through 25 October 2012

ER -

The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses

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