Invention Grant
- Patent Title: Use of fly ash to treat spent liquor from a thermomechanical pulping process
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Application No.: US14976022Application Date: 2015-12-21
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Publication No.: US09702083B2Publication Date: 2017-07-11
- Inventor: Pedram Fatehi , Farshad Oveissi
- Applicant: Lakehead University
- Applicant Address: CA Thunder Bay, Ontario
- Assignee: LAKEHEAD UNIVERSITY
- Current Assignee: LAKEHEAD UNIVERSITY
- Current Assignee Address: CA Thunder Bay, Ontario
- Agency: Ade & Company Inc.
- Agent Kyle R. Satterthwaite; Ryan W. Dupuis
- Main IPC: D21C11/00
- IPC: D21C11/00
Abstract:
The spent liquor (SL) of a thermomechanical pulping (TMP) process introduces a high load to the wastewater system of this process. To reduce this load, fly ash from a biomass boiler is used for removing lignin from the SL, and also for decreasing the chemical oxidation demand (COD) and turbidity of the SL.
Public/Granted literature
- US20160222587A1 Use of Fly Ash to Treat Spent Liquor from a Thermomechanical Pulping Process Public/Granted day:2016-08-04
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