Effect of chip thickness on kraft cooking bleach ability of Acacia mangium and Eucalyptus camaldulensis | |
| Author | Nampak, Honey |
| Call Number | AIT Thesis no.PP-03-7 |
| Subject(s) | Eucalyptus camaldulensis Pulping Mangium Sulphate pulping process |
| Note | A thesis submitted in partial fulfillment of the requirements for degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Considerable effects of using different chip thickness laboratory classified of eucalyptus and acacia in the kraft pulping and ECF-bleaching were observed. Thin chips (chips 2-4 mm), thick chips (4-6 mm) and mix chips were used in this study with the pulp kappa number 16-23 for eucalyptus and 9.7-20 for acacia. When the chip thickness was increasing from the thin chips to higher thickness and loosing the evenness of sample by mixing different chips sizes, lower alkali consumption were observed in laaft pulping and substantial losses in screened yield, bleached yield and viscosity produced, higher amount of screen rejects were produced in kraft and ECF bleaching pulping. It is recommended to use thin chips for pulping in hardwood species. The maximum 8mm slot width of the slotted screen used in this study. |
| Year | 2003 |
| 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) | Kolehmainen, Heikki |
| Examination Committee(s) | Malinen, Raimo;Viljakainen, Esa; |
| Scholarship Donor(s) | Government of Finland;AIT Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2003 |