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DC Field | Value | Language |
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dc.contributor.author | Danish, Mohammed | - |
dc.contributor.author | Birnbach, Janine | - |
dc.contributor.author | Mohamad Ibrahim, M.N. | - |
dc.contributor.author | Rokiah Hashim | - |
dc.contributor.author | Majeed, Shahnaz | - |
dc.contributor.author | Tay, Guan Seng | - |
dc.contributor.author | Norzahir Sapawe | - |
dc.contributor.author | (UniKL RCMP) | - |
dc.date.accessioned | 2022-11-25T03:20:09Z | - |
dc.date.available | 2022-11-25T03:20:09Z | - |
dc.date.issued | 2021-12 | - |
dc.identifier.citation | Danish, M., Birnbach, J., Mohamad Ibrahim, M. N., Rokiah Hashim, Majeed, S., Tay, G. S., & Norzahir Sapawe (2021). Optimization study of caffeine adsorption onto large surface area wood activated carbon through central composite design approach. Environmental Nanotechnology, Monitoring & Management, 16, 100594. https://doi.org/10.1016/j.enmm.2021.100594 | en_US |
dc.identifier.issn | 22151532 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S2215153221001690?via%3Dihub | - |
dc.identifier.uri | http://hdl.handle.net/123456789/26340 | - |
dc.description.abstract | Activated carbon from Acacia mangium wood was prepared by chemical activation using H3PO4 under optimum conditions (OAMW-AC). In this study, a rotatable central composite design of response surface methodology was used to optimize the adsorption capacity of OAMW-AC against caffeine molecules. The maximum removal capacity of the OAMW-AC was found to be 29.2 mg/g under optimized conditions. The experimental results established optimized conditions for maximum caffeine removal were; 61 min of contact time, 3.0 g/L of adsorbent dosage, 100 mg/L of initial caffeine concentration, and 7.60 solution pH. The surface morphology, surface elemental composition, and surface functional group changes on the OAMW-AC were monitored by field emission scanning electron microscopy images, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy, respectively. The characterization data showed OAMW-AC had a Brunauer-Emmet-Teller (BET) surface area of 1767 m2/g with dominated mesopore area (94.8 %). The pH at the point of zero charges (pHzpc) was 2.25, and the negative value of proton binding capacity (Q = − 0.23 mmol/g) showing proton dissociation from the carbon surface at pH above pHzpc. A desorption study of the caffeine through 95 % ethanol solution was also carried out. It was observed that 37.2 % of the adsorbed caffeine could be reclaimed from activated carbon. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.subject | Activated carbon | en_US |
dc.subject | Adsorption | en_US |
dc.subject | Caffeine | en_US |
dc.subject | Optimization | en_US |
dc.subject | Wood | en_US |
dc.title | Optimization study of caffeine adsorption onto large surface area wood activated carbon through central composite design approach | en_US |
dc.type | Article | en_US |
Appears in Collections: | Journal Articles |
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Optimization study of caffeine adsorption onto large surface area wood activated carbon through central composite design approach.pdf | 306.09 kB | Adobe PDF | View/Open |
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