HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION

This study reports the degradation of ciprofloxacin (CIP) by means of ionizing radiations. Kinetic studies with aqueous concentrations of 4.6, 10, 15, 17.9 mg/L reveals that degradation of CIP follows pseudo-first order kinetics and the decay constant increased with decrease in initial concentration...

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Autores principales:	SAYED,MURTAZA, SHAH,LUQMAN ALI, KHAN,JAVED ALI, SHAH,NOOR SAMAD, KHAN,HASAN M, KHAN,RAFAQAT ALI, KHAN,ABDUR RAHMAN, KHAN,ASAD M
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2016
Materias:	Hydroxyl radical ciprofloxacin degradation gamma-irradiation kinetics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200019
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spelling	oai:scielo:S0717-970720160002000192016-09-14HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTIONSAYED,MURTAZASHAH,LUQMAN ALIKHAN,JAVED ALISHAH,NOOR SAMADKHAN,HASAN MKHAN,RAFAQAT ALIKHAN,ABDUR RAHMANKHAN,ASAD M Hydroxyl radical ciprofloxacin degradation gamma-irradiation kinetics This study reports the degradation of ciprofloxacin (CIP) by means of ionizing radiations. Kinetic studies with aqueous concentrations of 4.6, 10, 15, 17.9 mg/L reveals that degradation of CIP follows pseudo-first order kinetics and the decay constant increased with decrease in initial concentration of CIP. The removal efficiency, represented by G-value, decreased with increasing absorbed dose and increased with higher [CIP]0 concentration at a given absorbed dose. The effects of bubbling CIP solution with N2, N2O or air on CIP degradation were also studied. The influence of various radical scavengers like tert-butanol, iso-propanol, HCO3- , CO3(2-) , NO3- and NO2- as radical scavengers in N2- saturated solutions of CIP indicated that 'OH were more closely associated with the radiolytic decomposition of CIP than other radicals, such as e-aq or ·H. The pH value of aqueous media played a crucial role in the degradation of CIP. It was observed that degradation efficiency was higher under acidic condition compared to degradation in natural or alkaline media. F-, CH3COO- and HCOO- were formed as a result of CIP degradation that were analyzed by ion-chromatography.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.61 n.2 20162016-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200019en10.4067/S0717-97072016000200019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hydroxyl radical ciprofloxacin degradation gamma-irradiation kinetics
spellingShingle	Hydroxyl radical ciprofloxacin degradation gamma-irradiation kinetics SAYED,MURTAZA SHAH,LUQMAN ALI KHAN,JAVED ALI SHAH,NOOR SAMAD KHAN,HASAN M KHAN,RAFAQAT ALI KHAN,ABDUR RAHMAN KHAN,ASAD M HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION
description	This study reports the degradation of ciprofloxacin (CIP) by means of ionizing radiations. Kinetic studies with aqueous concentrations of 4.6, 10, 15, 17.9 mg/L reveals that degradation of CIP follows pseudo-first order kinetics and the decay constant increased with decrease in initial concentration of CIP. The removal efficiency, represented by G-value, decreased with increasing absorbed dose and increased with higher [CIP]0 concentration at a given absorbed dose. The effects of bubbling CIP solution with N2, N2O or air on CIP degradation were also studied. The influence of various radical scavengers like tert-butanol, iso-propanol, HCO3- , CO3(2-) , NO3- and NO2- as radical scavengers in N2- saturated solutions of CIP indicated that 'OH were more closely associated with the radiolytic decomposition of CIP than other radicals, such as e-aq or ·H. The pH value of aqueous media played a crucial role in the degradation of CIP. It was observed that degradation efficiency was higher under acidic condition compared to degradation in natural or alkaline media. F-, CH3COO- and HCOO- were formed as a result of CIP degradation that were analyzed by ion-chromatography.
author	SAYED,MURTAZA SHAH,LUQMAN ALI KHAN,JAVED ALI SHAH,NOOR SAMAD KHAN,HASAN M KHAN,RAFAQAT ALI KHAN,ABDUR RAHMAN KHAN,ASAD M
author_facet	SAYED,MURTAZA SHAH,LUQMAN ALI KHAN,JAVED ALI SHAH,NOOR SAMAD KHAN,HASAN M KHAN,RAFAQAT ALI KHAN,ABDUR RAHMAN KHAN,ASAD M
author_sort	SAYED,MURTAZA
title	HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION
title_short	HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION
title_full	HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION
title_fullStr	HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION
title_full_unstemmed	HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION
title_sort	hydroxyl radical based degradation of ciprofloxacin in aqueous solution
publisher	Sociedad Chilena de Química
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200019
work_keys_str_mv	AT sayedmurtaza hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT shahluqmanali hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT khanjavedali hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT shahnoorsamad hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT khanhasanm hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT khanrafaqatali hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT khanabdurrahman hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution AT khanasadm hydroxylradicalbaseddegradationofciprofloxacininaqueoussolution
_version_	1718445552675323904

HYDROXYL RADICAL BASED DEGRADATION OF CIPROFLOXACIN IN AQUEOUS SOLUTION

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