| Author | Mayuree Phasuphan |
| Call Number | AIT Thesis no. PP-99-3 |
| Subject(s) | Waste paper--Recycling
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | In present, US old newspaper is used as a raw material to produce Thai newsprint. The use of
US newspaper accentuates production cost due to different parameters including
transportation. Thai newspapers could be the best alternative if the barriers of collection
process and deinking are removed. This thesis focus is to overcome the problems encountered
in deinking of Thai newspapers.
The deinking of Thai and US ONP was done under the same condition in laboratory scale.
Washing deinking was followed by using Bauer McNett fractionator. Deinking of Thai ONP
shows the comparable results to those of US. This means it has potential to be replaced for US
ONP if the collection problems are overcame.
Optimization of Thai deinking was done by using different re-pulping conditions. Deinked
pulp characteristics, physical properties and optical properties of handsheets were examined as
well as the effect of using different re-pulping chemicals, temperature, time and pH on
brightness.
It was concluded that Thai newspapers could produce the same or even higher quality
newsprint than US ONP if the deinking condition is modified based on the specific condition
of local newspapers. |
| Year | 1999 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Pulp and Paper Technology (PP) |
| Chairperson(s) | Nazhad, Mousa M.; |
| Examination Committee(s) | Malinen, Raimo 0. ;Antti Palokangas; |
| Scholarship Donor(s) | Her Majesty Queen Sirikit; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1999 |