Application of central composite design for optimization of the removal of humic substances using coconut copra
Coconut copra is a potential biosorbent for removal of humic substances from peat swamp runoff. In this paper, response surface methodology was applied to evaluate the optimum conditions for removal of humic substances from peat swamp runoff using modified coconut copra. Batch adsorption experiments...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Springer Berlin Heidelberg
2015
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| Online Access: | http://ir.unimas.my/id/eprint/10314/ http://ir.unimas.my/id/eprint/10314/1/NO%2017%20Application%20of%20central%20composite%20design%20for%20optimization%20of%20the%20removal%20of%20humic%20substances%20using%20coconut%20copra.%28abstract%29.pdf |
| _version_ | 1848836753419403264 |
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| author | Terri Zhuan, Ean Lee Chanida, Krongchai Nurul Aida Lu, Bt Mohd Irwan Lu Sila, Kittiwachana Siong, Fong Sim |
| author_facet | Terri Zhuan, Ean Lee Chanida, Krongchai Nurul Aida Lu, Bt Mohd Irwan Lu Sila, Kittiwachana Siong, Fong Sim |
| author_sort | Terri Zhuan, Ean Lee |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | Coconut copra is a potential biosorbent for removal of humic substances from peat swamp runoff. In this paper, response surface methodology was applied to evaluate the optimum conditions for removal of humic substances from peat swamp runoff using modified coconut copra. Batch adsorption experiments were conducted according to central composite design. Results show that the quadratic model is best fitted for predicting the removal efficiency with regression coefficients closer to 1 and a lower root mean square error. Dosage is found to have significant influence on the removal efficiency with p < 0.05. Response surface models further identified the optimum dosage, contact time and temperature at 4.56 g modified coconut copra per 100 mL peat swamp runoff, 42.9 min and 56.8 °C/329°K, respectively attaining the maximum removal efficiency of 88.19 %. The predicted removal efficiency was confirmed experimentally under the modelled optimum conditions; the removal efficiency attained (86.54 %) was in good agreement with the predicted value. |
| first_indexed | 2025-11-15T06:28:46Z |
| format | Article |
| id | unimas-10314 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:28:46Z |
| publishDate | 2015 |
| publisher | Springer Berlin Heidelberg |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-103142016-10-21T01:21:58Z http://ir.unimas.my/id/eprint/10314/ Application of central composite design for optimization of the removal of humic substances using coconut copra Terri Zhuan, Ean Lee Chanida, Krongchai Nurul Aida Lu, Bt Mohd Irwan Lu Sila, Kittiwachana Siong, Fong Sim QD Chemistry SB Plant culture Coconut copra is a potential biosorbent for removal of humic substances from peat swamp runoff. In this paper, response surface methodology was applied to evaluate the optimum conditions for removal of humic substances from peat swamp runoff using modified coconut copra. Batch adsorption experiments were conducted according to central composite design. Results show that the quadratic model is best fitted for predicting the removal efficiency with regression coefficients closer to 1 and a lower root mean square error. Dosage is found to have significant influence on the removal efficiency with p < 0.05. Response surface models further identified the optimum dosage, contact time and temperature at 4.56 g modified coconut copra per 100 mL peat swamp runoff, 42.9 min and 56.8 °C/329°K, respectively attaining the maximum removal efficiency of 88.19 %. The predicted removal efficiency was confirmed experimentally under the modelled optimum conditions; the removal efficiency attained (86.54 %) was in good agreement with the predicted value. Springer Berlin Heidelberg 2015 Article PeerReviewed text en http://ir.unimas.my/id/eprint/10314/1/NO%2017%20Application%20of%20central%20composite%20design%20for%20optimization%20of%20the%20removal%20of%20humic%20substances%20using%20coconut%20copra.%28abstract%29.pdf Terri Zhuan, Ean Lee and Chanida, Krongchai and Nurul Aida Lu, Bt Mohd Irwan Lu and Sila, Kittiwachana and Siong, Fong Sim (2015) Application of central composite design for optimization of the removal of humic substances using coconut copra. International Journal of Industrial Chemistry, 6 (3). pp. 185-191. ISSN 2228-5547 http://link.springer.com/article/10.1007%2Fs40090-015-0041-0 DOI 10.1007/s40090-015-0041-0 |
| spellingShingle | QD Chemistry SB Plant culture Terri Zhuan, Ean Lee Chanida, Krongchai Nurul Aida Lu, Bt Mohd Irwan Lu Sila, Kittiwachana Siong, Fong Sim Application of central composite design for optimization of the removal of humic substances using coconut copra |
| title | Application of central composite design for optimization
of the removal of humic substances using coconut copra |
| title_full | Application of central composite design for optimization
of the removal of humic substances using coconut copra |
| title_fullStr | Application of central composite design for optimization
of the removal of humic substances using coconut copra |
| title_full_unstemmed | Application of central composite design for optimization
of the removal of humic substances using coconut copra |
| title_short | Application of central composite design for optimization
of the removal of humic substances using coconut copra |
| title_sort | application of central composite design for optimization
of the removal of humic substances using coconut copra |
| topic | QD Chemistry SB Plant culture |
| url | http://ir.unimas.my/id/eprint/10314/ http://ir.unimas.my/id/eprint/10314/ http://ir.unimas.my/id/eprint/10314/ http://ir.unimas.my/id/eprint/10314/1/NO%2017%20Application%20of%20central%20composite%20design%20for%20optimization%20of%20the%20removal%20of%20humic%20substances%20using%20coconut%20copra.%28abstract%29.pdf |