NDLI: Surfactant modification of banana trunk as low-cost adsorbents and their high benzene adsorptive removal performance from aqueous solution

Content Provider	Royal Society of Chemistry (RSC)
Author	Othman, Nurul Sakinah Cheu, Siew-Chin Song, Shiow-Tien Saman, Norasikin Kong, Helen Johari, Khariraihanna Mat, Hanapi
Copyright Year	2016
Abstract	The banana trunk was modified using cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulphate (SDS), poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (Pluronic 123), and 4-(1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol (Triton X-100) to develop novel low-cost adsorbents for benzene removal from aqueous solution. The surface morphology and functional groups of the synthesized adsorbents were determined by a field emission scanning electron microscope (FESEM) and a Fourier transform infrared (FTIR) spectrophotometer. The Brunauer, Emmett and Teller (BET) analysis and X-ray photoelectron spectroscopy (XPS) were also conducted to study adsorbent characteristics. The benzene adsorptive performance of the synthesized adsorbents was evaluated in a batch adsorption experiment at various experimental conditions. It was found that the highest benzene adsorption capacity (280.890 × 10−3 mmol g−1) was obtained for M-TX100-BT. The fundamental adsorption studies revealed that the benzene adsorption process was found to be thermodynamically non-spontaneous and all were fitted well by the Langmuir isotherm model. The adsorption kinetic data obeyed the pseudo-second kinetic model with the film diffusion as the rate-limiting step. The application prospects of the Triton X-100 modified banana trunk adsorbent were demonstrated through the regeneration study which revealed that it can also be repeatedly used for at least up to five-adsorption/desorption cycles and its adsorption capacity was comparable to the literature data of similar adsorbents. Thus, banana trunk agrowaste could be an alternative low-cost adsorbent precursor for the adsorptive benzene removal from an aqueous solution.
Starting Page	24738
Ending Page	24751
Page Count	14
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	6
Issue Number	29
Journal	RSC Advances
DOI	10.1039/c6ra00911e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ethylene glycol Propylene glycol Infrared spectroscopy BT Group Lauric acid Triton Fourier transform Photoemission spectroscopy Field emission microscopy Banana Bromide Emmett Sodium Adsorption Langmuir Benzene Spectrophotometry Diffusion X-ray photoelectron spectroscopy Langmuir adsorption model Triton X-100
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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