Optimization of photooxidative removal of phenazopyridine from water

Soudabeh Saeid; Mohammad A. Behnajady; Pasi Tolvanen; Tapio Salmi

doi:10.1134/S0036024418050266

Optimization of photooxidative removal of phenazopyridine from water

Soudabeh Saeid, Mohammad A. Behnajady, Pasi Tolvanen, Tapio Salmi

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

Abstract

The photooxidative removal of analgesic pharmaceutical compound phenazopyridine (PhP) from aqueous solutions by UV/H2O2 system with a re-circulated photoreactor was investigated. Response surface methodology (RSM) was employed to optimize the effect of operational parameters on the photooxidative removal efficiency. The investigated variables were: the initial PhP and H2O2 concentrations, irradiation time, volume of solution and pH. The analysis of variance (ANOVA) of quadratic model demonstrated that the described model was highly significant. The predicted values of the photooxidative removal efficiency were found to be in a fair agreement with experimental values (R2 = 0.9832, adjusted R2 = 0.9716). The model predicted that the optimal reaction conditions for a maximum removal of PhP (>98%) were: initial PhP concentration less than 23 mg L–1, initial concentration of H2O2 higher than 470 mg L–1, solution volume less than 500 mL, pH close to 2 and irradiation time longer than 6 min.

Original language	Undefined/Unknown
Pages (from-to)	876–883
Journal	Russian Journal of Physical Chemistry A
Volume	92
Issue number	5
DOIs	https://doi.org/10.1134/S0036024418050266
Publication status	Published - 2018
MoE publication type	A1 Journal article-refereed

Keywords

Chemical Engineering

Access to Document

10.1134/S0036024418050266

https://link.springer.com/article/10.1134/S0036024418050266

Cite this

@article{cd066b8023bf414bae02fa352733a193,

title = "Optimization of photooxidative removal of phenazopyridine from water",

abstract = "The photooxidative removal of analgesic pharmaceutical compound phenazopyridine (PhP) from aqueous solutions by UV/H2O2 system with a re-circulated photoreactor was investigated. Response surface methodology (RSM) was employed to optimize the effect of operational parameters on the photooxidative removal efficiency. The investigated variables were: the initial PhP and H2O2 concentrations, irradiation time, volume of solution and pH. The analysis of variance (ANOVA) of quadratic model demonstrated that the described model was highly significant. The predicted values of the photooxidative removal efficiency were found to be in a fair agreement with experimental values (R2 = 0.9832, adjusted R2 = 0.9716). The model predicted that the optimal reaction conditions for a maximum removal of PhP (>98%) were: initial PhP concentration less than 23 mg L–1, initial concentration of H2O2 higher than 470 mg L–1, solution volume less than 500 mL, pH close to 2 and irradiation time longer than 6 min.",

keywords = "Chemical Engineering, Chemical Engineering, Chemical Engineering",

author = "Soudabeh Saeid and Behnajady, {Mohammad A.} and Pasi Tolvanen and Tapio Salmi",

note = "tk.",

year = "2018",

doi = "10.1134/S0036024418050266",

language = "Odefinierat/ok{\"a}nt",

volume = "92",

pages = "876–883",

journal = "Russian Journal of Physical Chemistry A",

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TY - JOUR

T1 - Optimization of photooxidative removal of phenazopyridine from water

AU - Saeid, Soudabeh

AU - Behnajady, Mohammad A.

AU - Tolvanen, Pasi

AU - Salmi, Tapio

N1 - tk.

PY - 2018

Y1 - 2018

N2 - The photooxidative removal of analgesic pharmaceutical compound phenazopyridine (PhP) from aqueous solutions by UV/H2O2 system with a re-circulated photoreactor was investigated. Response surface methodology (RSM) was employed to optimize the effect of operational parameters on the photooxidative removal efficiency. The investigated variables were: the initial PhP and H2O2 concentrations, irradiation time, volume of solution and pH. The analysis of variance (ANOVA) of quadratic model demonstrated that the described model was highly significant. The predicted values of the photooxidative removal efficiency were found to be in a fair agreement with experimental values (R2 = 0.9832, adjusted R2 = 0.9716). The model predicted that the optimal reaction conditions for a maximum removal of PhP (>98%) were: initial PhP concentration less than 23 mg L–1, initial concentration of H2O2 higher than 470 mg L–1, solution volume less than 500 mL, pH close to 2 and irradiation time longer than 6 min.

AB - The photooxidative removal of analgesic pharmaceutical compound phenazopyridine (PhP) from aqueous solutions by UV/H2O2 system with a re-circulated photoreactor was investigated. Response surface methodology (RSM) was employed to optimize the effect of operational parameters on the photooxidative removal efficiency. The investigated variables were: the initial PhP and H2O2 concentrations, irradiation time, volume of solution and pH. The analysis of variance (ANOVA) of quadratic model demonstrated that the described model was highly significant. The predicted values of the photooxidative removal efficiency were found to be in a fair agreement with experimental values (R2 = 0.9832, adjusted R2 = 0.9716). The model predicted that the optimal reaction conditions for a maximum removal of PhP (>98%) were: initial PhP concentration less than 23 mg L–1, initial concentration of H2O2 higher than 470 mg L–1, solution volume less than 500 mL, pH close to 2 and irradiation time longer than 6 min.

KW - Chemical Engineering

U2 - 10.1134/S0036024418050266

DO - 10.1134/S0036024418050266

M3 - Artikel

SN - 0036-0244

VL - 92

SP - 876

EP - 883

JO - Russian Journal of Physical Chemistry A

JF - Russian Journal of Physical Chemistry A

IS - 5

ER -