Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
Strength properties and the yield of soda and soda-ethanol pulps produced using hornbeam, beech and poplar woods were investigated. Soda pulps were produced applying 20% active alkali and the soda-ethanol pulps were made using 10% active alkali and 50% ethanol. The pulping temperature was constant a...
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| Format: | Article |
| Language: | fas |
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Regional Information Center for Science and Technology (RICeST)
2015-09-01
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| Series: | تحقیقات علوم چوب و کاغذ ایران |
| Subjects: | |
| Online Access: | http://ijwpr.areeo.ac.ir/article_12993_85e49ca9d6d0582380187e4b7b7f538a.pdf |
| _version_ | 1818820901390516224 |
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| author | Hosein Valayi Ahmad Jahan Latibari |
| author_facet | Hosein Valayi Ahmad Jahan Latibari |
| author_sort | Hosein Valayi |
| collection | DOAJ |
| description | Strength properties and the yield of soda and soda-ethanol pulps produced using hornbeam, beech and poplar woods were investigated. Soda pulps were produced applying 20% active alkali and the soda-ethanol pulps were made using 10% active alkali and 50% ethanol. The pulping temperature was constant at 175 C and the soda pulping time was selected at 120 minutes and the soda-ethanol pulping times were 120 and 180 minutes. The highest accepted pulping yield at 58.54% was reached using soda pulping on poplar wood and the lowest yield (49.29%) was related to soda-ethanol pulp produced from beech wood applying 180 minutes pulping time. The accepted yield of soda-ethanol pulping was low, but the kappa numbers of these pulps were almost 20 units lower than soda pulps. The strength properties of soda-ethanol pulps were superior to soda pulps and the difference was statistically significant at 99% confidence level. The results of this study indicated that the delignification of soda-ethanol pulping process is faster than soda pulping from the selected hardwoods especially poplar wood. |
| first_indexed | 2024-12-18T22:59:39Z |
| format | Article |
| id | doaj.art-4713a23bd73544a39f6fb3c04fdabccd |
| institution | Directory Open Access Journal |
| issn | 1735-0913 2383-112X |
| language | fas |
| last_indexed | 2024-12-18T22:59:39Z |
| publishDate | 2015-09-01 |
| publisher | Regional Information Center for Science and Technology (RICeST) |
| record_format | Article |
| series | تحقیقات علوم چوب و کاغذ ایران |
| spelling | doaj.art-4713a23bd73544a39f6fb3c04fdabccd2022-12-21T20:48:38ZfasRegional Information Center for Science and Technology (RICeST)تحقیقات علوم چوب و کاغذ ایران1735-09132383-112X2015-09-0130339940710.22092/ijwpr.2015.1299312993Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoodsHosein Valayi0Ahmad Jahan Latibari1Specialist, Department of Wood and Paper Science and Technology, College of Agriculture and Natural Resources, Karaj Branch, Islamic Azad University, Karaj, IranProfessor, Department of Wood and Paper Science and Technology, College of Agriculture and Natural Resources, Karaj Branch, Islamic Azad University, Karaj, IranStrength properties and the yield of soda and soda-ethanol pulps produced using hornbeam, beech and poplar woods were investigated. Soda pulps were produced applying 20% active alkali and the soda-ethanol pulps were made using 10% active alkali and 50% ethanol. The pulping temperature was constant at 175 C and the soda pulping time was selected at 120 minutes and the soda-ethanol pulping times were 120 and 180 minutes. The highest accepted pulping yield at 58.54% was reached using soda pulping on poplar wood and the lowest yield (49.29%) was related to soda-ethanol pulp produced from beech wood applying 180 minutes pulping time. The accepted yield of soda-ethanol pulping was low, but the kappa numbers of these pulps were almost 20 units lower than soda pulps. The strength properties of soda-ethanol pulps were superior to soda pulps and the difference was statistically significant at 99% confidence level. The results of this study indicated that the delignification of soda-ethanol pulping process is faster than soda pulping from the selected hardwoods especially poplar wood.http://ijwpr.areeo.ac.ir/article_12993_85e49ca9d6d0582380187e4b7b7f538a.pdfdelignificationSODAsoda-ethanolkappa numberyield |
| spellingShingle | Hosein Valayi Ahmad Jahan Latibari Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods تحقیقات علوم چوب و کاغذ ایران delignification SODA soda-ethanol kappa number yield |
| title | Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods |
| title_full | Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods |
| title_fullStr | Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods |
| title_full_unstemmed | Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods |
| title_short | Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods |
| title_sort | comparative investigation on the properties of soda and soda ethanol pulps from three hardwoods |
| topic | delignification SODA soda-ethanol kappa number yield |
| url | http://ijwpr.areeo.ac.ir/article_12993_85e49ca9d6d0582380187e4b7b7f538a.pdf |
| work_keys_str_mv | AT hoseinvalayi comparativeinvestigationonthepropertiesofsodaandsodaethanolpulpsfromthreehardwoods AT ahmadjahanlatibari comparativeinvestigationonthepropertiesofsodaandsodaethanolpulpsfromthreehardwoods |