| تعداد نشریات | 284 |
| تعداد نشریات سازمان | 82 |
| تعداد شماره‌ها | 3,038 |
| تعداد مقالات | 33,994 |
| تعداد مشاهده مقاله | 46,015,433 |
| تعداد دریافت فایل اصل مقاله | 77,273,597 |
اثر پیش استخراج های هیدرولیز با آب داغ و قلیا بر ویژگی های خمیر کاغذ های تولید شده با فرآیند مونواتانول آمین- آنتراکینون از باگاس | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 9، دوره 34، شماره 3 - شماره پیاپی 69، آذر 1398، صفحه 409-423 اصل مقاله (689.02 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2019.126944.1559 | ||
| نویسندگان | ||
| کژال مرادیان گیلان1؛ سحاب حجازی* 1؛ علی عبدالخانی1؛ هریرت سیکستا2 | ||
| 1گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران | ||
| 2گروه محصولات و سیستم‌های زیستی، دانشگاه آلتو، اسپو، فنلاند | ||
| چکیده | ||
| در این تحقیق، تأثیر پیش استخراج‌های آب داغ و قلیا بر روی ویژگی‌های خمیرکاغذهای مونواتانول آمین-آنتراکینون باگاس مورد بررسی قرار گرفت و نتایج با خمیرکاغذسازی سودا مقایسه شد. پیش استخراج قلیای 10% در مدت زمان 30 دقیقه با میزان بازده کل 7/94 درصد و بازده هولوسلولز برابر با 6/71 درصد و پیش استخراج آب داغ، با نسبت مایع به باگاس 10 به 1 در مدت زمان 45 دقیقه با میزان بازده کل 94 درصد و بازده هولوسلولز 4/69 درصد، به عنوان تیمارهای بهینه انتخاب گردیدند. مونواتانول آمین به صورت خالص ودر نسبت های مختلف همراه با آب استفاده شد. عامل متغیر، نسبت مونواتانول آمین به آب در سه نسبت 100 به 0، 75 به 25 و 50 به 50 بود و عوامل ثابت شامل نسبت مایع پخت به باگاس6 به1، زمان پخت در دمای بیشینه 60 دقیقه، دمای پخت C◦ 165 و 1/0% آنتراکینون در نظر گرفته شدند. بر اساس نتایج به دست آمده، خمیرکاغذهای تولید شده با نسبت مونو اتانول آمین به آب 75 به 25 (ازباگاس پیش استخراج نشده)، دارای بیشترین بازده کل (9/61) و عدد کاپای قابل قبول (5/19) بودند . مرحله پیش استخرا ج سبب بهبود بازده خمیرکاغذ، در هر دو فرآیند مونواتانول آمین-آنتراکینون و سودا شد. بعد از پیش استخراج، شاخص مقاومت به کشش و طول پارگی خمیرکاغذهای حاصله افت کرد. برخلاف این دو عامل، شاخص مقاومت به پارگی خمیرکاغذهای حاصل از باگاس پیش استخراج شده، افزایش پیدا کرد. درجه روشنی خمیرکاغذهای سودا حاصل از باگاس استخراج شده و نشده در مقایسه با خمیرکاغذهای مونواتانول آمین بیشتر بود. ماتی خمیرکاغذها بعد از مرحله پیش استخراج تقریبا بدون تغییر باقی ماند. | ||
| کلیدواژه‌ها | ||
| پیش استخراج؛ آب داغ؛ قلیا؛ باگاس؛ خمیرکاغذ سازی مونواتانول آمین | ||
| عنوان مقاله [English] | ||
| The effect of hot water and alkaline pre-extractions on properties of bagasse pulps produced by monoethanolamine-AQ process | ||
| نویسندگان [English] | ||
| Kajal Moradian Gilan1؛ Sahab Hedjazi1؛ Ali Abdulkhani1؛ Herbert Sixta2 | ||
| 1Department of wood science & technology, Faculty of natural resources, University of Tehran, Karaj, Iran | ||
| 2Department of Forest Products Technology, School of Chemical Technology, Aalto University, Espoo, Finland | ||
| چکیده [English] | ||
| In this research, the effect of hot water and alkaline pre-extractions on properties of bagasse monoethanolamine-AQ pulps was investigated and the results were compared with that of soda pulping. The pre-extraction with alkaline charge of 10%, time of 30 min resulted in total yield and holocellulose of 94.7% and 71.6%, respectively. The hot water pre-extraction with L/W of 10/1 and time of 45min lead to total yield and hollocellulose of 94% and 69.4%, respectively. These trails were selected as the optimum conditions. Monoethanolamine was used as pure and also in different proportions with water for cooking unextracted and pre-extracted bagasse. Variables in monoethanoleamine pulpng were ratio of monoethanolamine to water at three levels (100/0, 75/25, and 50/50%) and the ratio of the liquor to bagasse of 6 to 1, cooking time of 60 min, the temperature of 165°C and AQ charge of 0.1% considered as constant. According to the results, the MEA-AQ pulps produced with MEA/H2O ratio of 75/25 (from unextracted bagasse) have the highest total yield (61.9 %) and the acceptable kappa number (19.5). Pre-extraction resulted in improving of the yield in both MEA-AQ and soda pulping processes. After pre-extraction, the tensile index and breaking length of pulps dropped. In contrast, the tear index of pulps produced from pre-extracted bagasse in both pulping processes was increased. The brightness of soda pulps from un- and pre-extracted bagasse was more than that of MEA-AQ pulps. After pre-extraction, the opacity of pulps remains almost unchanged. | ||
| کلیدواژه‌ها [English] | ||
| pre-extraction, hot water, alkaline. bagasse, monoethanolamine pulping | ||
| مراجع | ||
|
-Ahmadi, M., Bayani, S. and Sharari, M., 2018. Organosolvpulping of calotropis procera by mono ethanol amin. Wood Research. 63(3), 467-478. -Alizadeh, P., Hedjazi, S., Abdulkhani, A. and Zabihzadeh, S. M., 2015. Comparative study of soda, sodaـAQ and monoethanolamine pulps from soybean straw. Iranian Journal of Wood and Paper Science Research, 68(4): 887-902. -Al-Sulaimani, K., Brat Dwivedi, P., 2017. Production of handmade papers from sugar cane bagasse and banana fibers in Oman. International Journal of Students’ Research in Technology & Management, 5(3): 16-20. -Andrade, M. F., Colodette, J. L., 2014. Dissolving pulp production from sugar cane bagasse. Industrial Crops and Products, 52: 58-64. -Al-Dajani, W. W., Tschirner, U. W., and Jensen, T., 2009. Pre-extraction of hemicelluloses and subsequent kraft pulping part II: Acid- And autohydrolysis. Tappi, 8(9): 30-37. -Behin, J., Mikaniki, F. and Fadaei, Z., 2008. Dissolving pulp (alpha-cellulose) from corn stalk by Kraft process. Iranian Journal of Chemistry Engineering, 5(3): 14-28. -Borrega, M.L., Tolonen, K., Bardot, F., Testova, L., and Sixta, H., 2013. Potential of hot water extraction of birch wood to produce high-purity dissolving pulp after alkaline pulping. Bioresource Technology., 135: 665. -Browning, B.L., 1967. Methods of Wood Chemistry, 1st ed., John Wiley & Sons., New York, p. 384. -Cheng, H., Zhan, H., Fu, Sh., and Lucia, L.A., 2010. Alkali extraction of hemicelluloses from depithed corn stover and effects on soda-AQ pulping. Bioresources, 11(1): 196-206. -Chavooshi, A., Bahmani, A. A., Darijani, A., Mootab Saei, A., Mehrabi, E., and Gholipour, M., 2012. The role of wood and paper industries management of Iran in sustainable development. Journal of Conservation and Utilization of Natural Resources, 1(3): 79-95. -De Lopez, S., Tissot, M. and Delmas, M., 1996. Integrated cereal straw valorization by an alkaline pre-extraction of hemicellulose prior to soda-anthraquinone pulping. Case stady of barley straw. Biomass and Bioenergy, 10(4): 201-211. -Green, J., Sanyer, N., 1982. Alkaline pulping in aqueous alcohols and amines. Tappi Journal, 65(5): 133-137. -Hasanjanzadeh, H., Hedjazi, S. and Jamalirad, L., 2014. Investigation on the influence of the alkaline preextraction of hemicelluloses on the properties of rice straw soda-AQ Pulp. Journal of Forest and Wood Products, 66(4): 493-506. -Hedjazi, S., Kordsachia, O., Patt, R. and Kreipl, A., 2009. MEA/water/AQ-pulping of wheat straw. Holzforschung, 63(5):505–512. -Heidari, A., 2010. Investigation on MEA pulping of rice straw and ECF bleaching of the pulps. College of Natural Resources, University of Tehran. -Hedjazi, S., Latibari, A. j., Hamzeh, Y., Kordsachia, O. and Ahmadi, M., 2011. Ethanolamine pulping-As a novel opportunity to overcome rice straw pulping challenges. Proceedings of the 16th International Symposium on Wood, Fiber and Pulping Chemistry (Vol.Ⅰ).ISWFPC. -Heiningen, V. A., 2006. Converting a kraft pulp mill into an integrated forest biorefinery. Pulp and Paper Canada, 107(6), 38. -Jahan, M.S., Saeed, A., Ni Y., and Zhibin, H. 2009. Pre-extraction and its impact on the alkaline pulping of bagasse. Biobased Material and Bioenergy, 3(4): 380-385. -Jahan, M. S., Shamsuzzaman, M., Mostafizur Rahman, M., Iqbal Moeiz, S. M. and Nic, Y., 2012. Effect of pre-extraction on soda–anthraquinone (AQ) pulping of rice straw. Industrial Crops and Products, 37(1), 164-169. -Jahan, M. S., Rahman, M. M., 2012. Effect of pre-hydrolysis on the soda-anthraquinone pulping of corn stalks and Saccharum spontaneum (kash). Carbohydrate Polymer, 88, 583-588. -Janson, J., 1970. Calculation of the polysaccharide composition of wood and pulp. Paperi ja puu, 52 (5), 323-329. -Lei, Y., Liu, S., Li, J., and Sun, R., 2010. Effect of hot water extraction on alkaline pulping of bagasse. Biotechnology Advance, 28(5), 609-612. -Mohammadi Shirkolaee, j., 2012. Investigation of MEA/KOH pulping of barely straw and ECF bleaching of the pulp. MSC thesis, College of Natural Resources, University of Tehran. -Mohammadi Yanagh, N., Hedjazi, S., Abdolkhani, A and Hamzeh, Y., 2016. Hot water pre-extraction of barley straw and its effect on soda and monoethanolamine pulps properties. Journal of Forest and Wood Prouduct, 69(3):535-549. -Mohammadi, N., Hedjazi, S., Abdolkhani, A. and Hamzeh, Y., 2019. Investigation on the influence of alkaline pre-extraction of barley straw on soda and monoethanolamine pulps properties. Iranian Journal of Wood and Paper Industries, 9(4):485-495. -Ragauskas, A. J., Nagy, M., Ho Kim, D., Eckert, C. A., Hallett, J. P., and Liotta, C. L., 2006. Industrial Biotechnology, 2(1), 5. -Rudi, H., Kermanian, H., Resalati, H. and Teymori Rodi, L., 2016. The effect of hot-water pre-extraction on the properties of soda-AQ pulp of wheat straw. Lignocellulose, 5(1), 66-76. -Salehi, K., Kordsachia, O. and Patt, R., 2014. Comparison of MEA/AQ, soda and soda/AQ pulping of wheat and rye straw. Industrial Crops and Products, 52, 603-610. -Salehi, K., Kordsachia, O. and Saake, B., 2017. The potential of wheat straw high yield MEA pulp for enhancing strength properties of recycled paper. BioResources, 12(4), 8255-8271. -Schild, G., Sixta, H., and Testova, L., 2010. Multifunctional alkaline pulping, delignification and hemicelluloses extraction. Cellulose Chemistry and Technoloy, 44(1-3), 35-45. -Sefik Tunc, M., Heiningen, van Adriaan R. P., 2008. Hemicellulose extraction of mixed southern hardwood with water at 150ºC: effect of time. Industrial & Engineering Chemistry Research, 47(18), 7031-7037. -Seyednaseredin, Hedjazi, S., M. and Hamzeh, Y., 2019. The influence of hot water pre-extraction of wheat straw hemicelluloses on monothannolamine-AQ and soda-AQ pulp properties. Iranian Journal of Wood and Paper Industries. Articles in press, Accepted Manuscript. -Shiralizadeh, F., Hedjazi, S. and Ahmadi, M., 2015. Evaluation of pulp properties produced from rice straw by combination the monoethanolamine and potassium hydroxide. Iranian Journal of Wood and Paper Science Research, 30(1), 46-59. -Sun, J. X., Sun, X.F., Zhao, H. and Sun, R. C., 2004. Isolation and characterization of cellulose from sugarcane bagasse. Polymer Degradation and Stability, 84(2), 331-339. -Vena, P.F., García-Aparicio, M.P., Brienzo, M., Görgens, J.F., and Rypstra, T., 2013. Effect of alkaline hemicelluloses pre-extraction on kraft pulp fibres from Eucalyptus grandis. Wood Chemistry and Technology. 33(3), 157-173. -Vena, P.F., García-Aparicio, M.P., Brienzo, M., Görgens, J.F., and Rypstra, T., 2012. Impact of hemicelluloses pre-extraction on pulp properties of sugarcane bagasse. Cellulose Chemistry and Technology, 47(5), 469-477. -Wallis, A.F.A., 1980. Wood pulping with monoethanolamine in pressure vessels. APPITA Journal, 33(5), 351-355. | ||
|
آمار تعداد مشاهده مقاله: 8,764 تعداد دریافت فایل اصل مقاله: 897 |
||