Natural Rubber And Natural Rubber Grafted Chitosan Films For Removal Of Dyes
In this study, adsorption experiments of methylene blue (MB) onto the surface of natural rubber (NR) were accomplished under optimized conditions of initial dye concentration, pH and temperature. The adsorption process of MB onto NR in the concentrations range from 3.2 mg L’1 — 16.0 mg L"1 we...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
2019
|
| Subjects: | |
| Online Access: | http://eprints.usm.my/61187/ http://eprints.usm.my/61187/1/Natural%20rubber%20and%20natural%20rubber%20grafted%20cut.pdf |
| _version_ | 1848884642000666624 |
|---|---|
| author | Hasanuddin, Nurul Hasliza |
| author_facet | Hasanuddin, Nurul Hasliza |
| author_sort | Hasanuddin, Nurul Hasliza |
| building | USM Institutional Repository |
| collection | Online Access |
| description | In this study, adsorption experiments of methylene blue (MB) onto the
surface of natural rubber (NR) were accomplished under optimized conditions of
initial dye concentration, pH and temperature. The adsorption process of MB onto NR in the concentrations range from 3.2 mg L’1 — 16.0 mg L"1 were found to follow linearized pseudo 2nd order: Type 1. The adsorption isotherm of NR onto MB obeyed
the Langmuir isotherm with an agreement of R2= 0.9750. The calculated values of
AH, AS, AG and Ea were found to be -21732.58 J mol’1, +14.24 J K‘* mol and -
26047.30 J mol'1 and +23.71 kJ mol'1 respectively. This adsorption study was shown
to be spontaneous and exothermic in nature. However, NR took days to adsorb MB
and failed to adsorb methyl orange (MO). Thus NR grafted chitosan (NR-g-Chi) with
varied ratios of 80:20, 75:25 and 70:30 were implemented to improve the adsorption
performance. The unpurified and purified NR-g-Chi was characterized using FTIR,
TGA and DSC. Both NR and NR-g-Chi were studied for their PZC and swelling
behavior. The performance adsorption of MB using NR-g-Chi showed better results
than NR adsorption itself with shorter time taken. |
| first_indexed | 2025-11-15T19:09:57Z |
| format | Thesis |
| id | usm-61187 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T19:09:57Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-611872024-09-20T03:47:13Z http://eprints.usm.my/61187/ Natural Rubber And Natural Rubber Grafted Chitosan Films For Removal Of Dyes Hasanuddin, Nurul Hasliza QD241-441 Organic chemistry In this study, adsorption experiments of methylene blue (MB) onto the surface of natural rubber (NR) were accomplished under optimized conditions of initial dye concentration, pH and temperature. The adsorption process of MB onto NR in the concentrations range from 3.2 mg L’1 — 16.0 mg L"1 were found to follow linearized pseudo 2nd order: Type 1. The adsorption isotherm of NR onto MB obeyed the Langmuir isotherm with an agreement of R2= 0.9750. The calculated values of AH, AS, AG and Ea were found to be -21732.58 J mol’1, +14.24 J K‘* mol and - 26047.30 J mol'1 and +23.71 kJ mol'1 respectively. This adsorption study was shown to be spontaneous and exothermic in nature. However, NR took days to adsorb MB and failed to adsorb methyl orange (MO). Thus NR grafted chitosan (NR-g-Chi) with varied ratios of 80:20, 75:25 and 70:30 were implemented to improve the adsorption performance. The unpurified and purified NR-g-Chi was characterized using FTIR, TGA and DSC. Both NR and NR-g-Chi were studied for their PZC and swelling behavior. The performance adsorption of MB using NR-g-Chi showed better results than NR adsorption itself with shorter time taken. 2019-08 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/61187/1/Natural%20rubber%20and%20natural%20rubber%20grafted%20cut.pdf Hasanuddin, Nurul Hasliza (2019) Natural Rubber And Natural Rubber Grafted Chitosan Films For Removal Of Dyes. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | QD241-441 Organic chemistry Hasanuddin, Nurul Hasliza Natural Rubber And Natural Rubber Grafted Chitosan Films For Removal Of Dyes |
| title | Natural Rubber And Natural Rubber
Grafted Chitosan Films For Removal
Of Dyes |
| title_full | Natural Rubber And Natural Rubber
Grafted Chitosan Films For Removal
Of Dyes |
| title_fullStr | Natural Rubber And Natural Rubber
Grafted Chitosan Films For Removal
Of Dyes |
| title_full_unstemmed | Natural Rubber And Natural Rubber
Grafted Chitosan Films For Removal
Of Dyes |
| title_short | Natural Rubber And Natural Rubber
Grafted Chitosan Films For Removal
Of Dyes |
| title_sort | natural rubber and natural rubber
grafted chitosan films for removal
of dyes |
| topic | QD241-441 Organic chemistry |
| url | http://eprints.usm.my/61187/ http://eprints.usm.my/61187/1/Natural%20rubber%20and%20natural%20rubber%20grafted%20cut.pdf |