Chlorine-Free Bleaching of Kraft Pulp from Oil Palm Empty Fruit Bunches
ISSN | 00213551 |
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書誌レコードID(総合目録DB) | AA0068709X |
Chlorine-free bleaching was carried out on kraft pulp from oil palm empty fruit bunches (EFB) with an oxygen (O2) - acid (H2SO4) - ozone (O3) - hydrogen peroxide (H2O2) bleaching sequence. The κ-number (= an indicator of lignin content) of the pulp was reduced considerably after these processes indicating that most of the lignin present in the pulp can be removed using this chlorine-free sequence. Handsheets of both bleached and unbleached EFB pulp were prepared and their paper properties were determined. Brightness, a measure of the whiteness of paper, was achieved to ca. 75% for the bleached EFB pulp, showing a possibility of achieving 80% of brightness by chlorine-free bleaching. Paper strengths as indicated by tensile, tear and burst indices as well as stretch did not show significant differences between before and after bleaching. It is notable that these results were obtained despite a large decrease in viscosity by the bleaching process. Moreover, the EFB bleached pulp showed comparable strengths to hardwood pulps, indicating that EFB has the potential as a raw material for chemical pulp production using chlorine-free bleaching sequences.
刊行年月日 | |
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作成者 | TANAKA Ryohei WAN ROSLI W. D. MAGARA Kengo IKEDA Tsutomu HOSOYA Shuji |
著者キーワード |
EFB oxygen ozone brightness paper strengths |
公開者 | Japan International Research Center for Agricultural Sciences |
オンライン掲載日 | |
国立情報学研究所メタデータ主題語彙集(資源タイプ) | Journal Article |
巻 | 38 |
号 | 4 |
開始ページ | 275 |
終了ページ | 279 |
DOI | 10.6090/jarq.38.275 |
権利 | Japan International Research Center for Agricultural Sciences |
言語 | eng |