Journals / Türkiye Ormancılık Dergisi / 2007 / Sayı: 1

Acid catalyzed organosolv delignification systems

Asit katalizatörlü organik delignifikasyon sistemleri

Pages
146–158
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

But these are generally less complicated and have many advantages compare to conventional processes.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In conventional chemical pulping processes, sulfurous chemicals have used and those have very high investment and operational costs.
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Key Findings & Data:Many researches have been carried out for developing organic formulation mixture with acid as catalyses to develop new alternative a pulping process.
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Conclusion & Impact:But these are generally less complicated and have many advantages compare to conventional processes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:kağıt hamuru üretimi · kağıt hamuru ve kağıt sanayi · delignifikasyon

Abstract

In conventional chemical pulping processes, sulfurous chemicals have used and those have very high investment and operational costs. Many researches have been carried out for developing organic formulation mixture with acid as catalyses to develop new alternative a pulping process. Acid catalysed organasolv pulping reactions are based on depolimerization of lignin that is acid hydrolyeses of alpha and beta aryl ether linkgages. In this study, worldwide, alternative new pulping processes that have labaratory and small mill trial results success have been evaluated. In this sense, Asam, Acetosolv, Formacell, Ester ve Milox organosolv pulping processes have been studied. Each process has its own characteristics. But these are generally less complicated and have many advantages compare to conventional processes.

Özet

Geleneksel tam kimyasal kağıt üretim proseslerinde, çevre ve insanlar üzerine zararlı etkisi bulunan kükürtlü kimyasallar kullanmakta ve bu prosesler çok yüksek yatırım ve isletme maliyeti gerektirmektedir. Organik çözeltilerin tek baslarına veya diğer solventlerle karısım halinde ve asitlerin katalizatör olarak eklendiği alternatif kağıt üretim prosesleri üzerine son zamanlarda yoğun çalısmalar yapılmıstır. Asitlerin katalizatör olarak kullanıldığı organik delignifikasyon reaksiyonlarında, temel olarak ligninin polimerik yapısındaki alfa aril eter ve beta aril eter bağlarının asit hidrolizasyonu esastır. Bu çalısmada, dünya genelinde, geleneksel kimyasal metotlara alternatif olabileceği labaratuvar düzeyindeki kanıtlanmıs ve küçük ölçekli tesis düzeyinde denemeleri yapılmıs, Asam, Acetosolv, Formacell, Ester ve Milox organik delignifikasyon yöntemleri incelenmistir. Bu yöntemlerin her birisinin kendine özgü proses özellikleri bulunmaktadır. Fakat bu yöntemlerin ortak özelliği genel olarak geleneksel proseslerden daha basit ve birçok yönden avantajlı sonuçlar ortaya koymalarıdır.

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Cite This Article

ŞAHİN, H. T. (2007). Acid catalyzed organosolv delignification systems. Türkiye Ormancılık Dergisi, Sayı: 1, 146–158. https://ajindex.com/articles/358685

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References (17)

  1. Aziz, S., McDonough T., Thomson, N ve Doshi, M.R. 1998.
  2. Solvent pulping-Promise, Tappi J. 71 (2): 251-256
  3. Biermann, C. J. 1993. Essentials of Pulping and Papermaking. Academic Press Inc, San Diego CA. Davis, J. L, Young R. A ve Deodhar, S. S. 1986. Organic acid pulping of wood III, acetic acid pulping of spruce. Mokuzai Gakkaishi 32 (11): 905-914.
  4. Fengel, D ve Wegener, G. 1984.
  5. Wood, Chemistry, Ultrastructure, Reactions. Walter de Gruyter Public, Berlin, Germany. Gierer, J. 1982.
  6. The chemistry of delignification, Holzforschung 36 (1): 43-51
  7. Groote, R. M. A. C., Curvello, A. A. S., Frangiosa, P.C ve Zambon, M.D. 1992. Some properties of acetosolv sugar cane bagasse lignin. Cellulose Chem.and Technol. 26, 53-61.
  8. Hergert, H. 1998. Developments in organosolv pulping-an overview, In: Environmentally Friendly Technologies for Pulp and Paper Industry (R. Young and M. Akthar, Eds) John Wiley Sons. Inc., 5-68
  9. Kleinert, T.N. 1974. Organosolv pulping with aqueous alcohol, Tappi J. 57 (8): 99 Kordsachia, O ve Patt, R. 1988 Full bleaching of Asam pulps without chlorine compounds. Holzforschung 42(3): 203-209.
  10. Kordsachia, O., Reipschlager, B ve Patt, R. 1990. Asam pulping of birch wood and chlorine free pulp bleaching, Paper and Timber 72 (1): 44-50.
  11. Nimz, H. H ve Casten, R. 1985.
  12. Organosolv pulping with acetic acid., Procs. 3th ISWPC, Vancouver, B.C, Canada, 265-266
  13. Nimz, H. H ve Casten, R. 1986. Chemical processing of lignocellulosics, Holz als Roh und Werkstoff 44, 207-212
  14. Nimz, H. H, Berg A, Granzow C ve Casten, R. 1989. Acetosolv pulping and bleaching. Nonwaste Technology, VTT Symposium 102, Espoo, Finland, 1: 399-408.
  15. Nimz, H. H ve Schoene, M. 1989. Non-waste pulping and bleaching with acetic acid, Das Papier 43, 102. Nimz, H.H ve Schoene, M. 1993. Proc. Seveth Intl. Symp. on Wood and Pulping Chem. Vol.1, Beijing, P.R.China, 258-265
  16. Paszner, L ve Cho, P.H. 1987. Review of catalysed organosolv pulping, Solvent pulping-promises & problems conference, Appleton, WI Patt, R., Kordsachia O ve Knoblauch, J.1987. The Asam process -alkaline sulfite, anthraquinone, methanol pulping. Fourth International Symposium on Wood and Pulping Chemistry, Paris, France, 1: 355-360.
  17. Patt, R., Knoblauch, A., Faix, O., Kordsachia, O., Puls, J ve Robert, D. 1991. Lignin and carbohydrate reactions in alkaline sulfite, anthraquinone, methanol (Asam) pulping, 6th International Symposium on Wood and Pulping Chemistry Proc., Melbourne, Australia, 1: 609- 617. Patt, R., Kordsachia, O ve Schuber