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Paper Information

Journal:   IRANIAN JOURNAL OF BIOTECHNOLOGY   JULY 2008 , Volume 6 , Number 3; Page(s) 144 To 150.
 
Paper: 

INFLUENCE OF FUNGAL ENZYME PRE-TREATMENT ON TOTALLY CHLORINE-FREE (TCF) BLEACHING OF DIMETHYL FORMAMIDE BAGASSE PULP

 
 
Author(s):  SHEYKHI AMIR, AMOU ABEDINI GH., RASHEDI H., ZIAEI SHIRKOLAEI Y.*, SOLTAN ALI S., SHAMS HAGHANI Z.
 
* RESEARCH CENTER FOR NEW TECHNOLOGIES IN LIFE SCIENCE ENGINEERING, UNIVERSITY OF TEHRAN, TEHRAN, I.R. IRAN
 
Abstract: 
A study was carried out on totally chlorine-free (TCF) bleach ability of dim ethyl form amide (DMF) treated bagasse pulps exposed to CZ-3 and FP 90031-sp strains of white-rot fungus Ceriporiopsis subvermispora. This process involved a bleaching sequence consisting of oxygen and peroxide treatment stages. The effect of enzymatic stage on bleach ability properties was studied and compared with control pulps, processed without enzyme addition. A final brightness of 79-80% International Standard Organization of brightness (ISO) was achieved after complete bleaching. The effects of direct bleaching caused pulp brightening (1.7-1.3% ISO) and delignification (>10%) immediately after the enzymatic stage. Under a peroxide charge of 3% to 9%, the improvements in brightness and the bleach ability of these pulps were found to be superior to those of the control during all peroxide stages. The selective bleaching of each process was assessed by changes of intrinsic viscosity. Generally higher bleach ability and bleaching selectivity of xylanase-treated pulps and the inevitable maximal gain in pulp brightness (or bleach boosting, as a main objective of xylanase application) were only achieved after the first and second peroxide bleaching stages. These substantially diminished by the end of the sequence.
 
Keyword(s): CERIPORIOPSIS SUBVERMISPORA, FUNGAL ENZYME, BRIGHTNESS, XYLANASE, DIMETHYL FORMAMIDE PULPING
 
 
References: 
 
Citations: 
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APA: Copy

SHEYKHI, A., & AMOU ABEDINI, G., & RASHEDI, H., & ZIAEI SHIRKOLAEI, Y., & SOLTAN ALI, S., & SHAMS HAGHANI, Z. (2008). INFLUENCE OF FUNGAL ENZYME PRE-TREATMENT ON TOTALLY CHLORINE-FREE (TCF) BLEACHING OF DIMETHYL FORMAMIDE BAGASSE PULP. IRANIAN JOURNAL OF BIOTECHNOLOGY, 6(3), 144-150. https://www.sid.ir/en/journal/ViewPaper.aspx?id=127788



Vancouver: Copy

SHEYKHI AMIR, AMOU ABEDINI GH., RASHEDI H., ZIAEI SHIRKOLAEI Y., SOLTAN ALI S., SHAMS HAGHANI Z.. INFLUENCE OF FUNGAL ENZYME PRE-TREATMENT ON TOTALLY CHLORINE-FREE (TCF) BLEACHING OF DIMETHYL FORMAMIDE BAGASSE PULP. IRANIAN JOURNAL OF BIOTECHNOLOGY. 2008 [cited 2021December05];6(3):144-150. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=127788



IEEE: Copy

SHEYKHI, A., AMOU ABEDINI, G., RASHEDI, H., ZIAEI SHIRKOLAEI, Y., SOLTAN ALI, S., SHAMS HAGHANI, Z., 2008. INFLUENCE OF FUNGAL ENZYME PRE-TREATMENT ON TOTALLY CHLORINE-FREE (TCF) BLEACHING OF DIMETHYL FORMAMIDE BAGASSE PULP. IRANIAN JOURNAL OF BIOTECHNOLOGY, [online] 6(3), pp.144-150. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=127788.



 
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