Akinpelu, Adeola A. and Chowdhury, Zaira Zaman and Shibly, Shahjalal Mohd. and Faisal, Abu Nasser Mohd and Badruddin, Irfan Anjum and Rahman, Md. Mahfujur and Al Amin, Md. and Sagadevan, Suresh and Akbarzadeh, Omid and Khan, T. M. Yunus and Kamangar, Sarfaraz and Khalid, Khalisanni and Saidur, R. and Johan, Mohd Rafie (2021) Adsorption studies of volatile organic compound (naphthalene) from aqueous effluents: Chemical activation process using weak Lewis acid, equilibrium kinetics and isotherm modelling. International Journal of Molecular Sciences, 22 (4). ISSN 1661-6596, DOI https://doi.org/10.3390/ijms22042090.
Full text not available from this repository.Abstract
This study deals with the preparation of activated carbon (CDSP) from date seed powder (DSP) by chemical activation to eliminate polyaromatic hydrocarbon-PAHs (naphthalene-C10H8) from synthetic wastewater. The chemical activation process was carried out using a weak Lewis acid of zinc acetate dihydrate salt (Zn(CH3CO2)(2)center dot 2H(2)O). The equilibrium isotherm and kinetics analysis was carried out using DSP and CDSP samples, and their performances were compared for the removal of a volatile organic compound-naphthalene (C10H8)-from synthetic aqueous effluents or wastewater. The equilibrium isotherm data was analyzed using the linear regression model of the Langmuir, Freundlich and Temkin equations. The R-2 values for the Langmuir isotherm were 0.93 and 0.99 for naphthalene (C10H8) adsorption using DSP and CDSP, respectively. CDSP showed a higher equilibrium sorption capacity (q(e)) of 379.64 mu g/g. DSP had an equilibrium sorption capacity of 369.06 mu g/g for C10H8. The rate of reaction was estimated for C10H8 adsorption using a pseudo-first order, pseudo-second order and Elovich kinetic equation. The reaction mechanism for both the sorbents (CDSP and DSP) was studied using the intraparticle diffusion model. The equilibrium data was well-fitted with the pseudo-second order kinetics model showing the chemisorption nature of the equilibrium system. CDSP showed a higher sorption performance than DSP due to its higher BET surface area and carbon content. Physiochemical characterizations of the DSP and CDSP samples were carried out using the BET surface area analysis, Fourier-scanning microscopic analysis (FSEM), energy-dispersive X-ray (EDX) analysis and Fourier-transform spectroscopic analysis (FTIR). A thermogravimetric and ultimate analysis was also carried out to determine the carbon content in both the sorbents (DSP and CDSP) here. This study confirms the potential of DSP and CDSP to remove C10H8 from lab-scale synthetic wastewater.
| Item Type: | Article |
|---|---|
| Funders: | King Khalid University[R.G.P. 2/74/41], Universiti Malaya[ST 028-2019] |
| Uncontrolled Keywords: | Chemical activation process;Weak Lewis acid;Activated carbon;Date seeds (DS);Water purification;Volatile organic compound (napththalene-C10H8) |
| Subjects: | Q Science > Q Science (General) T Technology > T Technology (General) |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 13 Jun 2022 07:35 |
| Last Modified: | 13 Jun 2022 07:35 |
| URI: | http://eprints.um.edu.my/id/eprint/34482 |
Actions (login required)
 |
View Item |
