ECOLOGY SAFE METHOD OF OBTAINING FROM FIR-WOOD THE CELLULOSIC PRODUCT WITH HIGH CONTENT OF ALFA-CELLULOSE

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Левданский, Владимир Александрович ; Левданский, Александр Владимирович ; Кузнецов, Борис Николаевич (2014)
  • Publisher: Altai State University
  • Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material) (issn: 1029-5143, eissn: 1029-5151)
  • Related identifiers: doi: 10.14258/jcprm.1402035
  • Subject: fir-wood, delignification, hydrogen peroxide, acetic acid, sulfuric acid catalyst, alkaline treatment, alpha-cellulose | древесина ели, делигнификация, пероксид водорода, уксусная кислота, сернокислотный катализатор, щелочная обработка, альфа-целлюлоза

The «green» method of obtaining from fir-wood the cellulosic product with high content of alpha-cellulose was developed. It consists of the stage of wood delignification by hydrogen peroxide in the medium «acetic acid – water – sulfuric acid catalyst» and of the stage of alkaline treatment by NaOH. Preparation conditions were selected which allow to obtain with an acceptable yield (30–31% mas.) the cellulosic product containing 97,3–98,0% mas. of alpha-cellulose.
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