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US 11,465,156 B2Granted
Waste processing
AssigneeFiberight Limited
InventorsCharles Banks, Nicholas Mark Thompson, Dhivya Jyoti Puri, Peter Speller, Craig Stuart-Paul
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Abstract
The present invention relates generally to the field of waste processing. The method comprises separating waste into at least two parts, comprising: (i) mainly food waste (fines) and (ii) mainly paper and other recyclable material (overs). The overs are pulped and washed to obtain a cellulose-rich biomass and the fines are optionally processed separately to recover a cellulose-rich biomass and the cellulose-rich biomass from both the fines and the overs may be combined.
Claims15
A method for processing Municipal Solid Waste (MSW), comprising the steps of:
- a) separating said waste into at least two parts, comprising:
- (i) fines comprising mainly food waste and (ii) overs comprising mainly paper and other recyclable material;
- b) pulping said overs;
- and
- c) washing said pulped overs to obtain a first cellulose-rich biomass;
- and
- d) processing said fines by thermomechanical pulping followed by density separation to obtain a second cellulose-rich biomass,
- wherein said first and second cellulose-rich biomass combined comprises less than about 10% ash and a glucan:xylan ratio of between about 5-8:1.
5 more elements
Dependencies are inferred from the claim text.