PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA
Alfa, also known as Stipa tenacissimaI or “halfa”, is grown in North Africa and south Spain. Due to its short fiber length, paper made from alfa pulp retains bulk and takes block letters well. In this study alfa was evaluated for bleached pulp production. Two cellulose pulps with different chemical...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2010-02-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_1_291_Bouiri_Amrnai_Dissolving_Pulp_Alfa/509 |
| _version_ | 1818926961494327296 |
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| author | Baya Bouiri Moussa Amrani |
| author_facet | Baya Bouiri Moussa Amrani |
| author_sort | Baya Bouiri |
| collection | DOAJ |
| description | Alfa, also known as Stipa tenacissimaI or “halfa”, is grown in North Africa and south Spain. Due to its short fiber length, paper made from alfa pulp retains bulk and takes block letters well. In this study alfa was evaluated for bleached pulp production. Two cellulose pulps with different chemical compositions were pulped by a conventional kraft process. One sample was taken from the original alfa material and another from alfa that had been pretreated by diluted acid. The pulp produced from the pretreated alfa was bleached by the elemental-chlorine-free sequences DEPD and DEDP. The yield, Kappa number, brightness, and α- cellulose content of bleached and unbleached pulps were evaluated. The results showed that during the chemical pulping process, treated alfa cooked more easily than the original alfa. The treated alfa pulp also showed very good bleaching, reaching a brightness level of 94.8% ISO with a yield of 93.6% at an α-cellulose content 96.8(%) with a DEDP bleaching sequence, compared to 83.2% ISO brightness level, 92.8% yield, and 95.1% α-cellulose content for bleached pulp with a DEPD bleaching sequence. Therefore, this alfa material could be considered as a worthwhile choice for cellulosic fiber supply. |
| first_indexed | 2024-12-20T03:05:26Z |
| format | Article |
| id | doaj.art-04e5e47df99f4cd38b920e1d31374b6f |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-20T03:05:26Z |
| publishDate | 2010-02-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-04e5e47df99f4cd38b920e1d31374b6f2022-12-21T19:55:36ZengNorth Carolina State UniversityBioResources1930-21262010-02-0151291302PRODUCTION OF DISSOLVING GRADE PULP FROM ALFABaya BouiriMoussa AmraniAlfa, also known as Stipa tenacissimaI or “halfa”, is grown in North Africa and south Spain. Due to its short fiber length, paper made from alfa pulp retains bulk and takes block letters well. In this study alfa was evaluated for bleached pulp production. Two cellulose pulps with different chemical compositions were pulped by a conventional kraft process. One sample was taken from the original alfa material and another from alfa that had been pretreated by diluted acid. The pulp produced from the pretreated alfa was bleached by the elemental-chlorine-free sequences DEPD and DEDP. The yield, Kappa number, brightness, and α- cellulose content of bleached and unbleached pulps were evaluated. The results showed that during the chemical pulping process, treated alfa cooked more easily than the original alfa. The treated alfa pulp also showed very good bleaching, reaching a brightness level of 94.8% ISO with a yield of 93.6% at an α-cellulose content 96.8(%) with a DEDP bleaching sequence, compared to 83.2% ISO brightness level, 92.8% yield, and 95.1% α-cellulose content for bleached pulp with a DEPD bleaching sequence. Therefore, this alfa material could be considered as a worthwhile choice for cellulosic fiber supply.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_1_291_Bouiri_Amrnai_Dissolving_Pulp_Alfa/509AlfaKraftDissolving grade PulpBleachingChlorine dioxidePrehydrolysis |
| spellingShingle | Baya Bouiri Moussa Amrani PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA BioResources Alfa Kraft Dissolving grade Pulp Bleaching Chlorine dioxide Prehydrolysis |
| title | PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA |
| title_full | PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA |
| title_fullStr | PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA |
| title_full_unstemmed | PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA |
| title_short | PRODUCTION OF DISSOLVING GRADE PULP FROM ALFA |
| title_sort | production of dissolving grade pulp from alfa |
| topic | Alfa Kraft Dissolving grade Pulp Bleaching Chlorine dioxide Prehydrolysis |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_1_291_Bouiri_Amrnai_Dissolving_Pulp_Alfa/509 |
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