A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING
This study deals with a biorefinery concept based on larch wood. Wood chips of Siberian larch (Larix sibirica Lebed.) were treated with water before pulping at the optimal pre-extraction (PE) condition of 150 °C and 90 minutes. Through PE, about 12.4% of the wood mass is dissolved, mainly from the a...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2012-06-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_3_3539_Horhammer_van%20Heiningen_Larch_Biorefinery_PSAQ_Pulping/1616 |
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| author | Hanna S. Hörhammer , Adriaan R. van Heiningen |
| author_facet | Hanna S. Hörhammer , Adriaan R. van Heiningen |
| author_sort | Hanna S. Hörhammer |
| collection | DOAJ |
| description | This study deals with a biorefinery concept based on larch wood. Wood chips of Siberian larch (Larix sibirica Lebed.) were treated with water before pulping at the optimal pre-extraction (PE) condition of 150 °C and 90 minutes. Through PE, about 12.4% of the wood mass is dissolved, mainly from the arabinogalactan hemicellulose component. Fermentation of the hemicellulose-rich larch extract with Bacillus coagulans resulted in consumption of all C6 and C5 sugars and produced lactic acid in high yield. PE before pulping resulted in lower (4 to 5%) pulp yield than for control kraft pulps. However, the pulp yield loss may be reduced by addition of polysulfide (PS) and anthraquinone (AQ). The present study focuses on the effect of the degree of washing of the extracted chips and that of the PS charge in PSAQ pulping on the final properties of the pulp. Three different levels of washing and three different PS charges were tested. The characteristics of the extract, wash water, pulp, and black liquor samples were determined. The amount of sugars in the combined stream of collected extract and wash water obtained by mild washing was 10.2% on o.d. wood. |
| first_indexed | 2024-12-21T08:33:55Z |
| format | Article |
| id | doaj.art-4a23c6e1ac6a476284ce3d1610fda3d2 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-21T08:33:55Z |
| publishDate | 2012-06-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-4a23c6e1ac6a476284ce3d1610fda3d22022-12-21T19:10:07ZengNorth Carolina State UniversityBioResources1930-21262012-06-017335393554A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPINGHanna S. Hörhammer, Adriaan R. van HeiningenThis study deals with a biorefinery concept based on larch wood. Wood chips of Siberian larch (Larix sibirica Lebed.) were treated with water before pulping at the optimal pre-extraction (PE) condition of 150 °C and 90 minutes. Through PE, about 12.4% of the wood mass is dissolved, mainly from the arabinogalactan hemicellulose component. Fermentation of the hemicellulose-rich larch extract with Bacillus coagulans resulted in consumption of all C6 and C5 sugars and produced lactic acid in high yield. PE before pulping resulted in lower (4 to 5%) pulp yield than for control kraft pulps. However, the pulp yield loss may be reduced by addition of polysulfide (PS) and anthraquinone (AQ). The present study focuses on the effect of the degree of washing of the extracted chips and that of the PS charge in PSAQ pulping on the final properties of the pulp. Three different levels of washing and three different PS charges were tested. The characteristics of the extract, wash water, pulp, and black liquor samples were determined. The amount of sugars in the combined stream of collected extract and wash water obtained by mild washing was 10.2% on o.d. wood.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_3_3539_Horhammer_van%20Heiningen_Larch_Biorefinery_PSAQ_Pulping/1616LarchLarix sibiricaBiorefineryPre-extractionWashingPulpingPolysulfideAnthraquinonePS chargePulp properties |
| spellingShingle | Hanna S. Hörhammer , Adriaan R. van Heiningen A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING BioResources Larch Larix sibirica Biorefinery Pre-extraction Washing Pulping Polysulfide Anthraquinone PS charge Pulp properties |
| title | A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING |
| title_full | A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING |
| title_fullStr | A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING |
| title_full_unstemmed | A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING |
| title_short | A LARCH BIOREFINERY: INFLUENCE OF WASHING AND PS CHARGE ON PRE-EXTRACTION PSAQ PULPING |
| title_sort | larch biorefinery influence of washing and ps charge on pre extraction psaq pulping |
| topic | Larch Larix sibirica Biorefinery Pre-extraction Washing Pulping Polysulfide Anthraquinone PS charge Pulp properties |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_3_3539_Horhammer_van%20Heiningen_Larch_Biorefinery_PSAQ_Pulping/1616 |
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