PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT
Precipitation of lignosulphonates from the liquor for sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL) by addition of Ca(OH)2 was investigated in this work. The experiment was conducted in a reaction temperature range of 20 to 75oC for 90 minutes with Ca(OH)2 charge varying f...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2012-01-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_1_0868_Yu_WL_Precip_Lignosulphonates_SPORL_Liquid_CaOH/1356 |
| _version_ | 1818872660877115392 |
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| author | Menghui Yu, Gaosheng Wang, Chunlan Liu, Ruhan A |
| author_facet | Menghui Yu, Gaosheng Wang, Chunlan Liu, Ruhan A |
| author_sort | Menghui Yu, |
| collection | DOAJ |
| description | Precipitation of lignosulphonates from the liquor for sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL) by addition of Ca(OH)2 was investigated in this work. The experiment was conducted in a reaction temperature range of 20 to 75oC for 90 minutes with Ca(OH)2 charge varying from 20 to 90 g/L and a range of liquid enrichment ratio of 1 to 5. It was found that increased Ca(OH)2 charge, duration time, reaction temperature, and liquor concentration each tended to improve lignosulphonates precipitation, but tended to hurt fermentable sugars conservation. Application of Ca(OH)2 20 g/L to SPORL liquid without enrichment at 30oC for 90 minutes could be an optimal condition. Under this condition, 25.95% of the lignosulphonates was precipitated for further utilization, while calculated amounts of 106.46% of glucose and 60.25% of xylose were conserved for further fermentation. |
| first_indexed | 2024-12-19T12:42:21Z |
| format | Article |
| id | doaj.art-a85fb8f6c50945bc8f41ddab173f3789 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-19T12:42:21Z |
| publishDate | 2012-01-01 |
| publisher | North Carolina State University |
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| series | BioResources |
| spelling | doaj.art-a85fb8f6c50945bc8f41ddab173f37892022-12-21T20:20:55ZengNorth Carolina State UniversityBioResources1930-21262012-01-0171868877PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENTMenghui Yu,Gaosheng Wang,Chunlan Liu,Ruhan APrecipitation of lignosulphonates from the liquor for sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL) by addition of Ca(OH)2 was investigated in this work. The experiment was conducted in a reaction temperature range of 20 to 75oC for 90 minutes with Ca(OH)2 charge varying from 20 to 90 g/L and a range of liquid enrichment ratio of 1 to 5. It was found that increased Ca(OH)2 charge, duration time, reaction temperature, and liquor concentration each tended to improve lignosulphonates precipitation, but tended to hurt fermentable sugars conservation. Application of Ca(OH)2 20 g/L to SPORL liquid without enrichment at 30oC for 90 minutes could be an optimal condition. Under this condition, 25.95% of the lignosulphonates was precipitated for further utilization, while calculated amounts of 106.46% of glucose and 60.25% of xylose were conserved for further fermentation.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_1_0868_Yu_WL_Precip_Lignosulphonates_SPORL_Liquid_CaOH/1356SPORL pretreatmentSpent liquorLignosulphonates precipitationFermentable sugarsCa(OH)2 |
| spellingShingle | Menghui Yu, Gaosheng Wang, Chunlan Liu, Ruhan A PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT BioResources SPORL pretreatment Spent liquor Lignosulphonates precipitation Fermentable sugars Ca(OH)2 |
| title | PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT |
| title_full | PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT |
| title_fullStr | PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT |
| title_full_unstemmed | PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT |
| title_short | PRECIPITATION OF LIGNOSULPHONATES FROM SPORL LIQUID BY CALCIUM HYDROXIDE TREATMENT |
| title_sort | precipitation of lignosulphonates from sporl liquid by calcium hydroxide treatment |
| topic | SPORL pretreatment Spent liquor Lignosulphonates precipitation Fermentable sugars Ca(OH)2 |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_1_0868_Yu_WL_Precip_Lignosulphonates_SPORL_Liquid_CaOH/1356 |
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