Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent

Removal of pharmaceutical waste, aspirin (ASA) in aqueous solution was investigated using activated carbon derived from coffee waste(CW). Activated carbon was prepared by using phosphoric acid as a chemical activating agent. Fourier Transform Infrared Spectroscopy (FTIR) was used to characterize the...

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Main Author:	Boushara, Reham Salah Hassan
Format:	Thesis
Language:	English
Published:	2018
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/86861/2/RehamSalahHasanMSChE2018.pdf
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spelling	my-utm-ep.868612020-09-30T09:08:59Z Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent 2018 Boushara, Reham Salah Hassan TP Chemical technology Removal of pharmaceutical waste, aspirin (ASA) in aqueous solution was investigated using activated carbon derived from coffee waste(CW). Activated carbon was prepared by using phosphoric acid as a chemical activating agent. Fourier Transform Infrared Spectroscopy (FTIR) was used to characterize the functional groups on the surface of the adsorbents. The surface area of the adsorbent was measured by BET technique. The activated carbon derived from coffee waste modified by H3PO4 was observed to have a larger surface area than AC-CW. The states of the adsorption operations are controlled by the effect of initial ASA concentration, adsorbent dose, contact time, temperature and pH adjacent on the adsorption procedure. In the batch adsorption test, the highest removal efficiency found was 98.02% in 30 minutes and 95% in 60 minutes when used H3PO4 - ACCW and AC-CW respectively. The optimum conditions for removal of aspirin from aqueous solution was found to be at 1000 mg/L of initial concentration ASA , pH 4 and at a temperature of 30°C and 0.5 g of H3PO4 - AC-CW and 0.6g AC-CW adsorbents. The experimental data for adsorption of aspirin were well fitted into Langmuir isotherm model and obeyed pseudo-second order kinetics model. The adsorption of aspirin onto H3PO4- AC-CW and AC-CW were exothermic in nature, with enthalpy change AH° = - 0.182 kJ/mol and -0.216 kJ/mol, AS0 was 0.072 J/mol -0.004 J/mol , which indicates a decrease in randomness at the adsorbent surface/aspirin solution interface, respectively. A negative Gibbs free energy AG° was obtained indicating feasibility and spontaneity of the adsorption process. For this study, the coffee waste modified by H3PO4 modified is considered as promising adsorbent and it could be employed as a low cost alternative to commercial activated in removal of aspirin in aqueous solutions. 2018 Thesis http://eprints.utm.my/id/eprint/86861/ http://eprints.utm.my/id/eprint/86861/2/RehamSalahHasanMSChE2018.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132083 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Boushara, Reham Salah Hassan Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
description	Removal of pharmaceutical waste, aspirin (ASA) in aqueous solution was investigated using activated carbon derived from coffee waste(CW). Activated carbon was prepared by using phosphoric acid as a chemical activating agent. Fourier Transform Infrared Spectroscopy (FTIR) was used to characterize the functional groups on the surface of the adsorbents. The surface area of the adsorbent was measured by BET technique. The activated carbon derived from coffee waste modified by H3PO4 was observed to have a larger surface area than AC-CW. The states of the adsorption operations are controlled by the effect of initial ASA concentration, adsorbent dose, contact time, temperature and pH adjacent on the adsorption procedure. In the batch adsorption test, the highest removal efficiency found was 98.02% in 30 minutes and 95% in 60 minutes when used H3PO4 - ACCW and AC-CW respectively. The optimum conditions for removal of aspirin from aqueous solution was found to be at 1000 mg/L of initial concentration ASA , pH 4 and at a temperature of 30°C and 0.5 g of H3PO4 - AC-CW and 0.6g AC-CW adsorbents. The experimental data for adsorption of aspirin were well fitted into Langmuir isotherm model and obeyed pseudo-second order kinetics model. The adsorption of aspirin onto H3PO4- AC-CW and AC-CW were exothermic in nature, with enthalpy change AH° = - 0.182 kJ/mol and -0.216 kJ/mol, AS0 was 0.072 J/mol -0.004 J/mol , which indicates a decrease in randomness at the adsorbent surface/aspirin solution interface, respectively. A negative Gibbs free energy AG° was obtained indicating feasibility and spontaneity of the adsorption process. For this study, the coffee waste modified by H3PO4 modified is considered as promising adsorbent and it could be employed as a low cost alternative to commercial activated in removal of aspirin in aqueous solutions.
format	Thesis
qualification_level	Master's degree
author	Boushara, Reham Salah Hassan
author_facet	Boushara, Reham Salah Hassan
author_sort	Boushara, Reham Salah Hassan
title	Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
title_short	Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
title_full	Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
title_fullStr	Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
title_full_unstemmed	Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
title_sort	removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2018
url	http://eprints.utm.my/id/eprint/86861/2/RehamSalahHasanMSChE2018.pdf
_version_	1747818514664652800

Removal of aspirin from aqueous solution using phosphoric acid - modified coffee waste adsorbent

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