Kaolin flocculation by cationic tapioca starch with different charge densities | |
| Author | Nadra, Zulfauzein |
| Call Number | AIT Thesis no.PP-12-04 |
| Subject(s) | Kaolin--Testing Starch--Analysis |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Pulp and Paper Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The effects of temperature, polymer dosage, ionic strength, and shear rate on floc size and floc structure of kaolin induced by two commercial cationic starches (S880 and S858) with different charge densities was studied. Floc size and floc structure was determined by using small angle light scattering (SALS). Adsorption of these two starches on kaolin was also studied. It was found that higher charge density cationic starch S880 induced larger and more compact flocs. Kaolin floc size induced by S880 and S858 was highly dependent to starch dosage, shear and the combination effect of NaCl and starch. The temperature and combination effect of temperature and starch gave significant affect to floc size induced by S880. Temperature significantly influences floc structure induced by S880. On the contrary, there was none of those factors has significant effect on the floc structure induced by S858. Lastly, the adsorption amount of S880 and S858 on kaolin was found to increase linearly with the increase of addition dosage. S880 adsorption was less affected by the shear compared to S858. The higher the shear, the less the S858 adsorbed on kaolin. No kaolin surface charge decay was observed after the addition of starches S880 and S858. |
| Year | 2012 |
| 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) | Englezos, Peter;Salam, P. Abdul;Shipin, Oleg |
| Scholarship Donor(s) | PT. Riau Andalan Pulp and Paper, Indonesia |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2012 |