Title:
COTTONIZATION BY BIODIGESTION OF PACKED FIBROUS BIOMASS
Document Type and Number:
WIPO Patent Application WO/2017/103092
Kind Code:
A3
Abstract:
The present invention relates to a process for retting fibrous biomass to release cellulosic fibers present therein. The process comprises digesting the fibrous biomass in at least one bio-digestive step by use of anaerobic digestive bacteria to release the cellulosic fibers. In the bio-digestive step, a retting aqueous liquor comprising anaerobic digestive bacteria is supplied to packed fresh fibrous biomass. The packed fresh fibrous biomass to be digested in the biomass bio-digestive step has a degree of packing corresponding to a density in dry state of 135 kg/m 3to 450 kg/m3. Alternatively the cellulosic fibers released in the bio-digestive step are treated with an aqueous composition in a post retting, fiber refining step at a temperature of at least 60°C.
Inventors:
BOS JEROEN HUGO (NL)
FECHTER JAN-OLOF (SE)
FECHTER JAN-OLOF (SE)
Application Number:
PCT/EP2016/081405
Publication Date:
August 03, 2017
Filing Date:
December 16, 2016
Export Citation:
Assignee:
IKEA SUPPLY AG (CH)
International Classes:
D01C1/04; C02F3/28; C02F3/30; C12M1/107
Domestic Patent References:
| WO2009109994A1 | 2009-09-11 | |||
| WO2006100560A1 | 2006-09-28 |
Foreign References:
| US20100201026A1 | 2010-08-12 | |||
| EP1595851A1 | 2005-11-16 | |||
| GB542247A | 1942-01-01 | |||
| US2948137A | 1960-08-09 | |||
| CN102559541B | 2014-03-12 | |||
| GB191103363A | 1911-08-31 | |||
| SU1650804A1 | 1991-05-23 |
Attorney, Agent or Firm:
STRÖM & GULLIKSSON AB (SE)
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