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Recovery of biomass cellulose from waste sewage sludge

  • Shun'ichi Honda
  • Naoyuki Miyata
  • Keisuke Iwahori
ORIGINAL ARTICLE

Abstract

In our previous work, the primary sludge from wastewater treatment plants was shown to contain a considerable amount of cellulose (about 20%, based on suspended solids) owing to the discharge of toilet paper. For the purpose of using the cellulose as a biomass resource, this study examined a simple method for its recovery. When fibrous cellulose was suspended in 0.3% sulfuric acid and autoclaved at 130°C for 60 min, 85%–88% of the initial solids remained without dissolving. Under these conditions, an activated sludge sample not containing cellulose was strongly hydrolyzed and only 7% of the initial solids remained. The prescribed amounts of cellulose added to the activated sludge sample were quantitatively recovered by the autoclaving treatment. In the treatment of primary sludge containing >20% cellulose, residual solids with relatively high levels of cellulose (>69%) could be obtained. The results indicate that the method proposed here could recover cellulose practically from waste sewage sludge for biomass utilization.

Key words Cellulose Biomass Recovery resources Autoclaving Waste sewage sludge 

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Copyright information

© Springer-Verlag Tokyo 2002

Authors and Affiliations

  • Shun'ichi Honda
    • 1
  • Naoyuki Miyata
    • 2
  • Keisuke Iwahori
    • 2
  1. 1.Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, JapanJP
  2. 2.Institute for Environmental Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan Tel. +81-54-264-5659; Fax +81-54-264-5549 e-mail: iwahori@sea.u-shizuoka-ken.ac.jpJP

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