The influence of hot water pre-extraction of wheat straw hemicelluloses on monoethanolamine-AQ and soda-AQ pulp properties

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Seyednaseredin m.; HEDJAZI S.; HAMZEH Y.

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Paper Information

Journal: IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES Year:2019 | Volume:10 | Issue:3 Page(s): 361-372

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Title

The influence of hot water pre-extraction of wheat straw hemicelluloses on monoethanolamine-AQ and soda-AQ pulp properties

Author(s)

Seyednaseredin m. | HEDJAZI S. | HAMZEH Y. | Issue Writer Certificate

Keywords

wheat strawQ2

hot water extractionQ1

monoethanolamineQ1

soda-AQQ2

Abstract

In this research, hot water pre-extraction of wheat straw followed with monoethanolamine-Anthraquinone and soda-Anthraquinone pulping was investigated. The pre-extraction satge of hemicelluloses with process variables of the temperature of 150 ◦ C and the time of 45 minutes with water/straw ratio of 4/1 was selected as the optimum treatment. Among the pulps produced from unextracted wheat straw and pre-extracted wheat straw, monoethanolamine-AQ pulps have the highest yield. The highest drop in yield is observed in the case of soda– AQ pulp produced from pre-extracted wheat straw. In the same process conditions, the kappa numbers of monoethanolamine-AQ and soda-AQ pulps from unextracted wheat straw show the lower amounts than the pulps from pre-extracted wheat starw and the lowest kappa number belongs to monoethanolamine-AQ pulp made from unextracted wheat straw. Tensile indices of the pulps produced with pre-extracted wheat straw were decresedsignificantly. Burst index of soda-AQ pulp from pre-extracted straw was slightly improved a little decrease in the burst index of monoethanolamine-AQ pulp from pre-extracted straw occurs. The tear index of monoethanolamine-AQ pulp is significantly increased after the pre-extraction of the straw. The brightness of pulp from both processes is slightly decreased after pre-extraction. The opacity of soda-AQ and monoethanolamine-AQ pulps from pre-extracted straw was increased and decresed respectively.

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APA: Copy

Seyednaseredin, m., HEDJAZI, S., & HAMZEH, Y.. (2019). The influence of hot water pre-extraction of wheat straw hemicelluloses on monoethanolamine-AQ and soda-AQ pulp properties. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, 10(3 ), 361-372. SID. https://sid.ir/paper/184411/en

Vancouver: Copy

Seyednaseredin m., HEDJAZI S., HAMZEH Y.. The influence of hot water pre-extraction of wheat straw hemicelluloses on monoethanolamine-AQ and soda-AQ pulp properties. IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES[Internet]. 2019;10(3 ):361-372. Available from: https://sid.ir/paper/184411/en

IEEE: Copy

m. Seyednaseredin, S. HEDJAZI, and Y. HAMZEH, “The influence of hot water pre-extraction of wheat straw hemicelluloses on monoethanolamine-AQ and soda-AQ pulp properties,” IRANIAN JOURNAL OF WOOD AND PAPER INDUSTRIES, vol. 10, no. 3 , pp. 361–372, 2019, [Online]. Available: https://sid.ir/paper/184411/en

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