publication . Article . 2014

Isolation of high quality lignin as a by-product from ammonia percolation pretreatment of poplar wood

Bouxin, Florent P.; Jackson, S. David; Jarvis, Michael C.;
Open Access
  • Published: 01 Jun 2014 Journal: Bioresource Technology, volume 162, pages 236-242 (issn: 0960-8524, Copyright policy)
  • Publisher: Elsevier BV
  • Country: India
Abstract
Abstract A two-step process combining percolation-mode ammonia pretreatment of poplar sawdust with mild organosolv purification of the extracted lignin produced high quality, high purity lignin in up to 31% yield and 50% recovery. The uncondensed fraction of the isolated lignin was up to 34%, close to that the native lignin (40%). Less lignin was recovered after pretreatment in batch mode, apparently due to condensation during the longer residence time of the solubilised lignin at elevated temperature. The lignin recovery was directly correlated with its molecular weight and its nitrogen content. Low nitrogen incorporation, observed at high ammonia concentration...
Subjects
Medical Subject Headings: food and beveragescomplex mixturesfungitechnology, industry, and agriculturemacromolecular substances
free text keywords: Renewable Energy, Sustainability and the Environment, Environmental Engineering, Waste Management and Disposal, Bioengineering, General Medicine, Nitrogen, chemistry.chemical_element, chemistry, Bond cleavage, Lignin, chemistry.chemical_compound, Waste management, Organosolv, Condensation, Sawdust, visual_art.visual_art_medium, visual_art, Ammonia, Organic chemistry, By-product, QD
Related Organizations
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