| Author | Nuttha Thongchul |
| Call Number | AIT Thesis no. BP-98-1 |
| Subject(s) | Chitosan
|
| Note | A thesis submitted in partial fulfillment of the requirements
for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | This experiment studied the NaOH removal from chitosan after chitin deacetylation in
the washing process. The experimental data, which were the concentration of NaOH in waste
water, the wet weight of chitosan and the dry weight of chitosan after each of the washing
stages, in a laboratory scale chitosan production were applied with Solid-Liquid Extraction
(Leaching) theory. The model of NaOH removal from chitosan in the washing process was
obtained.
The model, consists of two equilibrium relations, was used with the mass balance for the
simulation in the crossflow-stage washing process. The number of washing stages, the total
amount of water used in the washing process at the washing ratio of 1 kg of raw material chitin
to 10 I of water and 1 kg of raw material chitin to 20 l of water at each of the washing stages
were determined for the production from chitin 0.1 kg, 0.5 kg, 1.0 kg, 2.0 kg, 3.0 kg, 4.0 kg,
5.0 kg, 10.0 kg, I 00.0 kg and 1000.0 kg, respectively.
A bench scale chitosan production was conducted to check the efficiency of the model of
NaOH removal from chitosan in the washing process. Fmthermore, the affect of using the
reused water in the washing process was studied. The results showed that the model of Na OH
removal from chitosan in the washing process could be used to simulate the chitosan washing
process effectively. In addition, the water reutilization could be used in the chitosan
production. Cost evaluation for the bench scale chitosan production was also estimated. |
| Year | 1998 |
| 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 | Bioprocess Technology (BP) |
| Chairperson(s) | Suwalee Chandrkrachang; |
| Examination Committee(s) | Stevens, Willem F. ;Rakshit, Sudip K. ;Pakorn Nuchnoi ;Montet, Didier ;Udomchai Chinadit; |
| Scholarship Donor(s) | Royal Thai Government (RTG) ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |