V. MARCO TEÓRICO
5.2. Bases teóricas
5.2.4. Gestión de procesos venta e inventario
1.5 Significance and novelty of the study
This research significantly proves the successful of CNF in coupling with 1,12-dodecanediamine and GA (as chemical coupling agents), and covalently immobilized α-CGTase on CNF. CNF derived from kenaf bast fiber reveals as an excellent and sustainable natural support for α-CGTase immobilization, as good as the result revealed by previous studies on polymer-based nanofiber.
Immobilized α-CGTase on CNF presented higher enzyme loading and its activity, higher stability, good enzymatic production and reusability. The application of immobilized α-CGTase using membrane fouling operation proved to be a good potential for continuous operation as enzymatic membrane reactor (EMR). Dynamic mathematical modelling was developed to give a better understanding about behavior and mechanism of component balance, mass transfer and reaction kinetic that occurred within fouled α-CGTase-CNF layer (e.g. permeate flux, enzymatic production yield, total permeate volume).
1.6 Thesis outline
This thesis is organized into seven chapters as shown in Figure 1.6. As commonly, introduction, problem statements, objectives, research approaches and significant of study are state in Chapter 1. Chapter 2 deals with literature review about further explanation in developing CNF, interaction mechanism of ligand-spacer arm as a chemical coupling agents, covalent immobilization of α-CGTase on CNF, and reviews of membrane fouling application using UF membrane reactor system including mathematical modelling. Chapter 3 describes about development of CNF from kenaf bast fiber via chemical-physical treatment. The obtained CNF was then covalently immobilized with α-CGTase enzyme and the properties of enzymatic reaction performance will be discussed in details in Chapter 4. Chapter 5 represents the consequence work of immobilized α-CGTase on CNF to the application of ultrafiltration (UF) membrane system. The obtained experimental data were used to estimate the unknown parameters and to evaluate the performance of mass transfer and reaction kinetic for fouled α-CGTase-CNF layer in the system will be discussed in Chapter 6. Conclusions and recommendations for future works are presented in Chapter 7.
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Figure 1.6: Thesis outline.
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