EFFECT OF FUNGAL PRE-TREATMENT OF POPLAR CHIPS ON ITS PAPER BRIGHTNESS REVERSION

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RASOULI GARMAROUDI E.; FOOLADI H.; DJAFARI PETROUDY S.R.

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Paper Information

Journal: IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES Year:2017 | Volume:7 | Issue:4 Page(s): 625-635

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Information Journal Paper

Title

EFFECT OF FUNGAL PRE-TREATMENT OF POPLAR CHIPS ON ITS PAPER BRIGHTNESS REVERSION

Author(s)

RASOULI GARMAROUDI E. | FOOLADI H. | DJAFARI PETROUDY S.R. | Issue Writer Certificate

Keywords

CARBONYLQ1

CARBOXYLQ1

HEXENURONIC ACIDQ1

BRIGHTNESS REVERSIONQ1

CHLORINE DIOXIDEQ1

TRAMETES VERSICOLORQ1

Abstract

Unbleached kraft pulp made from poplar chips, pre-treated by TRAMETES VERSICOLOR in one, two and three weeks (bio-kraft pulp), was used as a raw material in this study. Above-mentioned pulps were characterized in the terms of lignin content and groups effective on the BRIGHTNESS REVERSION (CARBONYL, CARBOXYL and HEXENURONIC ACID); after each step of bleaching, using ECF method at DED sequences. In order to evaluate the BRIGHTNESS REVERSION, 60 g/m2 standard handsheets made from pulps were treated by thermal and UV ageing and then their brightness were measured. Results showed that by increasing pre-treatment duration, in all bleached treatments, lignin content increased excluding D1 step in three-weeks pre-treatment. CARBONYL groups reached the lowest content in one-week pre-treatment (third step) and 2-weeks pre-treatment (first step) and CARBOXYL groups and HEXENURONIC ACID decreased after 3 steps sequence bleaching. Effect of thermal treatment on BRIGHTNESS REVERSION was considerably more than UV treatment. In addition, papers from pre-treated chips for one and two weeks had minimum BRIGHTNESS REVERSION and papers made from chips after three-weeks fungal pre-treatment had maximum BRIGHTNESS REVERSION due to more CARBONYL and HEXENURONIC ACID. In this respect, two-weeks pre-treatment was confirmed as an optimum fungal pre-treatment.

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APA: Copy

RASOULI GARMAROUDI, E., FOOLADI, H., & DJAFARI PETROUDY, S.R.. (2017). EFFECT OF FUNGAL PRE-TREATMENT OF POPLAR CHIPS ON ITS PAPER BRIGHTNESS REVERSION. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, 7(4), 625-635. SID. https://sid.ir/paper/184340/en

Vancouver: Copy

RASOULI GARMAROUDI E., FOOLADI H., DJAFARI PETROUDY S.R.. EFFECT OF FUNGAL PRE-TREATMENT OF POPLAR CHIPS ON ITS PAPER BRIGHTNESS REVERSION. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES[Internet]. 2017;7(4):625-635. Available from: https://sid.ir/paper/184340/en

IEEE: Copy

E. RASOULI GARMAROUDI, H. FOOLADI, and S.R. DJAFARI PETROUDY, “EFFECT OF FUNGAL PRE-TREATMENT OF POPLAR CHIPS ON ITS PAPER BRIGHTNESS REVERSION,” IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, vol. 7, no. 4, pp. 625–635, 2017, [Online]. Available: https://sid.ir/paper/184340/en

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