EFFECT OF AGE OF KALALEH BRUTIAN PINE (PINUS BRUTIA MICHX.) TREE ON ITS WOOD CHEMICAL COMPOSITION AND KRAFT PULP PROPERTIES

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HOSSEINI S.Z.A.D.; MASHKOUR M.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2007 | Volume:14 | Issue:SUPPLEMENT (SPECIAL ISSUE NATURAL RESURCES) Page(s): 72-80

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Title

EFFECT OF AGE OF KALALEH BRUTIAN PINE (PINUS BRUTIA MICHX.) TREE ON ITS WOOD CHEMICAL COMPOSITION AND KRAFT PULP PROPERTIES

Author(s)

HOSSEINI S.Z.A.D. | MASHKOUR M. | Issue Writer Certificate

Keywords

EXTRACTIVESQ3

CELLULOSEQ4

LIGNINQ3

KRAFT PULPQ3

YIELDQ3

SULFIDITYQ3

Abstract

Wood of Brutian pine (pinus brutia Michx.) trees, used in this study collected from Kalaleh area, located in Golestan province. Mean fiber length measured in 3 and 6 year old Brutian pine stems showed significant difference at 1% level. According to Shiokura formula both stem were considered as juvenile wood. Extractive contents of 3 and 6 year old samples were 4.84% and 5.66% respectively, and were not found significant difference between them. Ash content of the two mentioned stems showed significant differences at 1% level. LIGNIN content of the wood dropped to 4.51% when going to older stem, and vice versa, CELLULOSE content increased to 14.27% in the same trend. By keeping constant SULFIDITY (25%) as well as other cooking conditions in KRAFT PULPing process of the two stems, it was found, that increasing 30 minutes cooking time could not affect significantly on the pulp YIELD. Gradually increase of effective alkaline and cooking time showed, the former affected on pulping process much more than the latter. Optimum cooking time in 3 year old stem in relation to the pulp YIELD as 43.43% and Kappa number as 29.16, was found 60 minutes, meanwhile in 6 year old stem with YIELD and Kappa number 43.53% and 27.64, was found 90 minutes. Comparison between the two pulp YIELDs (from 3 and 6 year old stems) showed no significant difference between them at 1% level, therefore pulp from 3 year old stem, because of 1% higher YIELD and 30 minutes lower cooking time was selected as suitable and optimum pulp for bleaching purposes.

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APA: Copy

HOSSEINI, S.Z.A.D., & MASHKOUR, M.. (2007). EFFECT OF AGE OF KALALEH BRUTIAN PINE (PINUS BRUTIA MICHX.) TREE ON ITS WOOD CHEMICAL COMPOSITION AND KRAFT PULP PROPERTIES. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 14(SUPPLEMENT (SPECIAL ISSUE NATURAL RESURCES)), 72-80. SID. https://sid.ir/paper/8981/en

Vancouver: Copy

HOSSEINI S.Z.A.D., MASHKOUR M.. EFFECT OF AGE OF KALALEH BRUTIAN PINE (PINUS BRUTIA MICHX.) TREE ON ITS WOOD CHEMICAL COMPOSITION AND KRAFT PULP PROPERTIES. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2007;14(SUPPLEMENT (SPECIAL ISSUE NATURAL RESURCES)):72-80. Available from: https://sid.ir/paper/8981/en

IEEE: Copy

S.Z.A.D. HOSSEINI, and M. MASHKOUR, “EFFECT OF AGE OF KALALEH BRUTIAN PINE (PINUS BRUTIA MICHX.) TREE ON ITS WOOD CHEMICAL COMPOSITION AND KRAFT PULP PROPERTIES,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 14, no. SUPPLEMENT (SPECIAL ISSUE NATURAL RESURCES), pp. 72–80, 2007, [Online]. Available: https://sid.ir/paper/8981/en

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