Comparative Evaluation of Organic Acid Pretreatment of Eucalyptus for Kraft Dissolving Pulp Production
Pretreatment is an essential process for the extensive utilization of lignocellulose materials. The effect of four common organic acid pretreatments for Kraft dissolving pulp production was comparatively investigated. It was found that under acidic conditions, hemicellulose can be effectively remove...
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| Veröffentlicht in: | Materials 2020-01, Vol.13 (2), p.361 |
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| creator | Chen, Yuanhang Yan, Zhenyun Liang, Long Ran, Miao Wu, Ting Wang, Baobin Zou, Xiuxiu Zhao, Mengke Fang, Guigan Shen, Kuizhong |
| description | Pretreatment is an essential process for the extensive utilization of lignocellulose materials. The effect of four common organic acid pretreatments for Kraft dissolving pulp production was comparatively investigated. It was found that under acidic conditions, hemicellulose can be effectively removed and more reducing sugars can be recovered. During acetic acid pretreatment, lignin that was dissolved in acetic acid could form a lignin-related film which would alleviate cellulose hydrolysis, while other organic acids caused severe cellulose degradation. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD) were used to characterize the pretreated chips in the process. Lignin droplets were attached to the surface of the treated wood chips according to the SEM results. The FTIR spectrum showed that the lignin peak signal becomes stronger, and the hemicellulose peak signal becomes weaker with acid pretreatment. The XRD spectrum demonstrated that the crystallinity index of the wood chips increased. The acetic acid pretreatment process-assisted Kraft process achieved higher yield (31.66%) and higher α-cellulose (98.28%) than any other organic acid pretreatment. Furthermore, extensive utilization of biomass was evaluated with the acetic acid pretreatment-assisted Kraft process. 43.8% polysaccharide (12.14% reducing sugar and 31.66% dissolving pulp) and 22.24% lignin (0.29% acetic acid lignin and 21.95% sulfate lignin) were recovered during the process. Biomass utilization could reach 66.04%. Acetic acid pretreatment is a promising process for extensive biomass utilization. |
| doi_str_mv | 10.3390/ma13020361 |
| format | Article |
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The effect of four common organic acid pretreatments for Kraft dissolving pulp production was comparatively investigated. It was found that under acidic conditions, hemicellulose can be effectively removed and more reducing sugars can be recovered. During acetic acid pretreatment, lignin that was dissolved in acetic acid could form a lignin-related film which would alleviate cellulose hydrolysis, while other organic acids caused severe cellulose degradation. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD) were used to characterize the pretreated chips in the process. Lignin droplets were attached to the surface of the treated wood chips according to the SEM results. The FTIR spectrum showed that the lignin peak signal becomes stronger, and the hemicellulose peak signal becomes weaker with acid pretreatment. The XRD spectrum demonstrated that the crystallinity index of the wood chips increased. The acetic acid pretreatment process-assisted Kraft process achieved higher yield (31.66%) and higher α-cellulose (98.28%) than any other organic acid pretreatment. Furthermore, extensive utilization of biomass was evaluated with the acetic acid pretreatment-assisted Kraft process. 43.8% polysaccharide (12.14% reducing sugar and 31.66% dissolving pulp) and 22.24% lignin (0.29% acetic acid lignin and 21.95% sulfate lignin) were recovered during the process. Biomass utilization could reach 66.04%. Acetic acid pretreatment is a promising process for extensive biomass utilization.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma13020361</identifier><identifier>PMID: 31940949</identifier><language>eng</language><publisher>Switzerland: MDPI AG</publisher><subject>Acetic acid ; Biomass ; Cellulose ; Eucalyptus ; Fourier transforms ; Infrared spectroscopy ; Kraft process (woodpulp) ; Lignin ; Lignocellulose ; Methods ; Microwaves ; Organic acids ; Polysaccharides ; Pretreatment ; Scanning electron microscopy ; Spectrum analysis ; Sugar ; Utilization ; Wood chips</subject><ispartof>Materials, 2020-01, Vol.13 (2), p.361</ispartof><rights>2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2020 by the authors. 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c406t-4d869e2cb3718ce2e28ebd05f26f114b243698b9dd8d5b7723f329cc12b3701a3</citedby><cites>FETCH-LOGICAL-c406t-4d869e2cb3718ce2e28ebd05f26f114b243698b9dd8d5b7723f329cc12b3701a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014399/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014399/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,881,27903,27904,53770,53772</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31940949$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Yuanhang</creatorcontrib><creatorcontrib>Yan, Zhenyun</creatorcontrib><creatorcontrib>Liang, Long</creatorcontrib><creatorcontrib>Ran, Miao</creatorcontrib><creatorcontrib>Wu, Ting</creatorcontrib><creatorcontrib>Wang, Baobin</creatorcontrib><creatorcontrib>Zou, Xiuxiu</creatorcontrib><creatorcontrib>Zhao, Mengke</creatorcontrib><creatorcontrib>Fang, Guigan</creatorcontrib><creatorcontrib>Shen, Kuizhong</creatorcontrib><title>Comparative Evaluation of Organic Acid Pretreatment of Eucalyptus for Kraft Dissolving Pulp Production</title><title>Materials</title><addtitle>Materials (Basel)</addtitle><description>Pretreatment is an essential process for the extensive utilization of lignocellulose materials. The effect of four common organic acid pretreatments for Kraft dissolving pulp production was comparatively investigated. It was found that under acidic conditions, hemicellulose can be effectively removed and more reducing sugars can be recovered. During acetic acid pretreatment, lignin that was dissolved in acetic acid could form a lignin-related film which would alleviate cellulose hydrolysis, while other organic acids caused severe cellulose degradation. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD) were used to characterize the pretreated chips in the process. Lignin droplets were attached to the surface of the treated wood chips according to the SEM results. The FTIR spectrum showed that the lignin peak signal becomes stronger, and the hemicellulose peak signal becomes weaker with acid pretreatment. The XRD spectrum demonstrated that the crystallinity index of the wood chips increased. The acetic acid pretreatment process-assisted Kraft process achieved higher yield (31.66%) and higher α-cellulose (98.28%) than any other organic acid pretreatment. Furthermore, extensive utilization of biomass was evaluated with the acetic acid pretreatment-assisted Kraft process. 43.8% polysaccharide (12.14% reducing sugar and 31.66% dissolving pulp) and 22.24% lignin (0.29% acetic acid lignin and 21.95% sulfate lignin) were recovered during the process. Biomass utilization could reach 66.04%. Acetic acid pretreatment is a promising process for extensive biomass utilization.</description><subject>Acetic acid</subject><subject>Biomass</subject><subject>Cellulose</subject><subject>Eucalyptus</subject><subject>Fourier transforms</subject><subject>Infrared spectroscopy</subject><subject>Kraft process (woodpulp)</subject><subject>Lignin</subject><subject>Lignocellulose</subject><subject>Methods</subject><subject>Microwaves</subject><subject>Organic acids</subject><subject>Polysaccharides</subject><subject>Pretreatment</subject><subject>Scanning electron microscopy</subject><subject>Spectrum analysis</subject><subject>Sugar</subject><subject>Utilization</subject><subject>Wood chips</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkV1LBCEUhiWKiuqmHxBCNxFs-bWO3gSxbR8U1EVdi-PoZsyMk44L_ftc-s4bD-c85-XVF4B9jE4olei005gigijHa2AbS8knWDK2_qveAnspvaByKMWCyE2wRUsfSSa3gZuFbtBRj35p4Xyp21zK0MPg4H1c6N4beG58Ax-iHaPVY2f7cTWcZ6Pbt2HMCboQ4W3UboQXPqXQLn2_gA-5HcpSaLJZ6e2CDafbZPc-7x3wdDl_nF1P7u6vbmbndxPDEB8nrBFcWmJqWmFhLLFE2LpBU0e4w5jVhFEuRS2bRjTTuqoIdZRIYzApGwhrugPOPnSHXHe2McVt1K0aou90fFNBe_V30vtntQhLVbYZlbIIHH0KxPCabRpV55Oxbat7G3JSpHx6JUklSEEP_6EvIce-PE-RKROcccJFoY4_KBNDStG6bzMYqVWC6ifBAh_8tv-NfuVF3wGjapct</recordid><startdate>20200112</startdate><enddate>20200112</enddate><creator>Chen, Yuanhang</creator><creator>Yan, Zhenyun</creator><creator>Liang, Long</creator><creator>Ran, Miao</creator><creator>Wu, Ting</creator><creator>Wang, Baobin</creator><creator>Zou, Xiuxiu</creator><creator>Zhao, Mengke</creator><creator>Fang, Guigan</creator><creator>Shen, Kuizhong</creator><general>MDPI AG</general><general>MDPI</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20200112</creationdate><title>Comparative Evaluation of Organic Acid Pretreatment of Eucalyptus for Kraft Dissolving Pulp Production</title><author>Chen, Yuanhang ; 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The effect of four common organic acid pretreatments for Kraft dissolving pulp production was comparatively investigated. It was found that under acidic conditions, hemicellulose can be effectively removed and more reducing sugars can be recovered. During acetic acid pretreatment, lignin that was dissolved in acetic acid could form a lignin-related film which would alleviate cellulose hydrolysis, while other organic acids caused severe cellulose degradation. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD) were used to characterize the pretreated chips in the process. Lignin droplets were attached to the surface of the treated wood chips according to the SEM results. The FTIR spectrum showed that the lignin peak signal becomes stronger, and the hemicellulose peak signal becomes weaker with acid pretreatment. The XRD spectrum demonstrated that the crystallinity index of the wood chips increased. The acetic acid pretreatment process-assisted Kraft process achieved higher yield (31.66%) and higher α-cellulose (98.28%) than any other organic acid pretreatment. Furthermore, extensive utilization of biomass was evaluated with the acetic acid pretreatment-assisted Kraft process. 43.8% polysaccharide (12.14% reducing sugar and 31.66% dissolving pulp) and 22.24% lignin (0.29% acetic acid lignin and 21.95% sulfate lignin) were recovered during the process. Biomass utilization could reach 66.04%. Acetic acid pretreatment is a promising process for extensive biomass utilization.</abstract><cop>Switzerland</cop><pub>MDPI AG</pub><pmid>31940949</pmid><doi>10.3390/ma13020361</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Acetic acid Biomass Cellulose Eucalyptus Fourier transforms Infrared spectroscopy Kraft process (woodpulp) Lignin Lignocellulose Methods Microwaves Organic acids Polysaccharides Pretreatment Scanning electron microscopy Spectrum analysis Sugar Utilization Wood chips |
| title | Comparative Evaluation of Organic Acid Pretreatment of Eucalyptus for Kraft Dissolving Pulp Production |
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