AI SearchBleaching of old newspapers and magazines (ONP and OMG) with hydrogen per oxide
Call Number: AIT RSPR no.PP-03-8 Material type:
SeriesSeries: Asian Institute of Technology. Research studies project report ; no. PP-03-8Publication details: Pathum Thani, Thailand : Asian Institute of Technology, 2003Description: 47 leavesSubject(s): Online resources: Summary: This study was undertaken to explore bleaching of ONP/OMG furnish at a ratio of 80:20 using H20 2 as a bleaching agent. The furnish composed of wood containing pulp. Three Process variable were analyzed: temperature, NaOH and H20 2 charges. It was found that the brightness could be improved upto 58% ISO to 62% ISO depending on chemical charge concentration with a single stage H20 2 bleaching. If this gain is acceptable then the ONP/OMG at the ratio 80/20 would not require another bleaching stage after deinking stage.
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Asian Institute of Technology Library AIT Publications | AIT RSPR no.PP-03-8 (Browse shelf(Opens below)) | 1 | Available | 30050120932396 | |||||||||||||
22-AIT Thesis (Replacement)
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Asian Institute of Technology Library AIT Publications | AIT RSPR no.PP-03-8 (Browse shelf(Opens below)) | 3 | Available | 30050120720650 | |||||||||||||
40-Archives
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Asian Institute of Technology Library Archives | AIT RSPR no.PP-03-8 (Browse shelf(Opens below)) | Available | 30050160107289 |
A research study submitted in partial fulfillment of the requirements for the degree of Master of Science.
This study was undertaken to explore bleaching of ONP/OMG furnish at a ratio of 80:20 using H20 2 as a bleaching agent. The furnish composed of wood containing pulp. Three Process variable were analyzed: temperature, NaOH and H20 2 charges. It was found that the brightness could be improved upto 58% ISO to 62% ISO depending on chemical charge concentration with a single stage H20 2 bleaching. If this gain is acceptable then the ONP/OMG at the ratio 80/20 would not require another bleaching stage after deinking stage.
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