| Author | Hazin, Mohammad |
| Note | A special project submitted in partial fulfillment of the requirements for the degree of Professional Master of Engineering in Pulp and Paper Technology |
| Publisher | Asian Institute of Technology |
| Abstract | This literature review first discusses and describes various retention systems: charge neutralization (coagulation), patching, bridging, complex flocculation (dual polymer, nano- and microparticle, network flocculation, and site blocking enhanced bridging flocculation). After this, the use of retention aids in practice and the efficiency of different retention systems are discussed. Retention is utmost important and being considered its influence into runnability and product quality. Application in most cases is useless when retention chemistry is negligible or very low.
Optimum of retention efficiency becomes more difficult without the help of a chemically assisted retention aid program. A well-designed retention aid program and the selection of the optimum retention with good control together with stabilization of white water consistency, electrokinetics and wet-end chemistry will be effective as the key to improve runnability and product quality.
Therefore, this literature study was done to acquire and sense performances of retention, and further information concerning behavior and characteristics of colloidal particles and chemical additives.
Finally, the control of retention and the wet-end management of the paper machine are discussed. |
| Year | 2008 |
| Type | Special Study Project Report (SSPR) |
| 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) | Lehtinen, Esa ; |
| Examination Committee(s) | Nazhad, Mousa M.;Viljakainen, Esa ; |
| Scholarship Donor(s) | Asia Pulp and Paper Indonesia; |