Abstract
The cellulose nanocrystals (CNCs) was successfully isolated from oil palm empty fruit bunch (OPEFB) using acid hydrolysis method. The CNCs obtained was functionalized into carboxymethyl cellulose nanocrystals (CMCNCs) through carboxymethylation technique using monochloroactic acid (MCA) which undergo two steps process which were alkalization followed by etherification. Based on FTIR spectra, the decreasing in the intensity of peak around 1320 cm-1 on CMCNCs spectra indicated the substitution of carboxyl group (COO) on the CNCs surface. The thermal stability of CNCs and CMCNCs powder were determined using thermogravimetric analyzer (TGA). The result shows the CMCNCs has higher thermal stability compared to CNCs as the functional group on the CNCs surface was modified. The prepared membrane than were compared by its capacity of absorption. The comparison observed that the capacity of water absorption was increased with the increasing of CNCs and CMCNCs dispersion in membrane. The adsorption study was done to identify the optimum membrane concentration to reduce the chlorpyrifos absorbance in its solvent by testing in 1 ppm concentration of chlorpyrifos. The absorbance of chlorpyrifos were determined using Ultraviolet- visible spectrometer (UV-Vis). The result of the adsorption study were show the degradation of the initial absorbance of chlorpyrifos peak at 230 nm by 1% CNCs membrane, 1%, 5%, 7%, and 9% CMCNCs membranes. This result shows the CMCNCs membrane has better removal ability compared to CNCs membrane. These finding validated this CNCs and CMCNCs membrane application was suitable for chlorpyrifos adsorption due to their promising and economically feasible technology.
Metadata
Item Type: | Student Project |
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Creators: | Creators Email / ID Num. Isnolamran, Norzakiatul Husna UNSPECIFIED |
Contributors: | Contribution Name Email / ID Num. Thesis advisor Mohamed, Ahmad Husaini UNSPECIFIED |
Subjects: | Q Science > Q Science (General) > Study and teaching > Laboratories. General works Q Science > QD Chemistry > Physical and theoretical chemistry > Acids and bases Q Science > QD Chemistry > Physical and theoretical chemistry > Theory of solution > Supersaturated solutions. Crystallization, etc. |
Divisions: | Universiti Teknologi MARA, Negeri Sembilan > Kuala Pilah Campus > Faculty of Applied Sciences |
Programme: | Bachelor of Science (Hons.) Chemistry |
Keywords: | Removal, chlorpyrifos, carboxymethyl cellulose nanocrystal membrane, characterization, adsorption study |
Date: | 2019 |
URI: | https://ir.uitm.edu.my/id/eprint/42726 |
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