Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology

Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology

Since Reactive Blue 21 (RB21) is one of the dye compounds which is harmful to human life, a simple and sensitive method to remove this pollutant from wastewater is using Nano Zero-Valent Iron (NZVI) catalyst. In this paper, a Central Composite Rotatable Design (CCRD) was employed for response surfac...

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Main Authors: Mahmood Reza Sohrabi, Mina Moghri, Hamid Reza Fard Masoumi, Sama Amiri, Nasim Moosavi
Format: Article
Language:English
Published: Elsevier 2016-07-01
Series:Arabian Journal of Chemistry
Subjects:
Zero-Valent Iron nanoparticles
Response surface methodology (RSM)
Central composite design
Reactive Blue 21
Wastewater
Online Access:http://www.sciencedirect.com/science/article/pii/S1878535214003384
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spelling doaj-080cf8e3e21046bd90c8316c6480862d2020-11-24T23:38:19ZengElsevierArabian Journal of Chemistry1878-53522016-07-019451852510.1016/j.arabjc.2014.11.060Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodologyMahmood Reza Sohrabi0Mina Moghri1Hamid Reza Fard Masoumi2Sama Amiri3Nasim Moosavi4Department of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, IranDepartment of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, IranDepartment of Chemistry, Faculty of Science, University Putra Malaysia, 43400 Serdang, Selangor, MalaysiaDepartment of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, IranDepartment of Chemistry, Islamic Azad University, North Tehran Branch, P.O. Box 1913674711, Tehran, IranSince Reactive Blue 21 (RB21) is one of the dye compounds which is harmful to human life, a simple and sensitive method to remove this pollutant from wastewater is using Nano Zero-Valent Iron (NZVI) catalyst. In this paper, a Central Composite Rotatable Design (CCRD) was employed for response surface modeling to optimize experimental conditions of the RB21 removal from aqueous solution. The significance and adequacy of the model were analyzed using analysis of variance (ANOVA). Four independent variables—including catalyst amount (0.1–0.9 g), pH (3.5–9.5), removal time (30–150 s) and dye concentration (10–50 mg/L)—were transformed to coded values and consequently second order quadratic model was built to predict the responses. The result showed that under optimized experimental conditions the removal of RB21 was over 95%.http://www.sciencedirect.com/science/article/pii/S1878535214003384Zero-Valent Iron nanoparticlesResponse surface methodology (RSM)Central composite designReactive Blue 21Wastewater
collection DOAJ
language English
format Article
sources DOAJ
author Mahmood Reza Sohrabi
Mina Moghri
Hamid Reza Fard Masoumi
Sama Amiri
Nasim Moosavi
spellingShingle Mahmood Reza Sohrabi
Mina Moghri
Hamid Reza Fard Masoumi
Sama Amiri
Nasim Moosavi
Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology
Arabian Journal of Chemistry
Zero-Valent Iron nanoparticles
Response surface methodology (RSM)
Central composite design
Reactive Blue 21
Wastewater
author_facet Mahmood Reza Sohrabi
Mina Moghri
Hamid Reza Fard Masoumi
Sama Amiri
Nasim Moosavi
author_sort Mahmood Reza Sohrabi
title Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology
title_short Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology
title_full Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology
title_fullStr Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology
title_full_unstemmed Optimization of Reactive Blue 21 removal by Nanoscale Zero-Valent Iron using response surface methodology
title_sort optimization of reactive blue 21 removal by nanoscale zero-valent iron using response surface methodology
publisher Elsevier
series Arabian Journal of Chemistry
issn 1878-5352
publishDate 2016-07-01
description Since Reactive Blue 21 (RB21) is one of the dye compounds which is harmful to human life, a simple and sensitive method to remove this pollutant from wastewater is using Nano Zero-Valent Iron (NZVI) catalyst. In this paper, a Central Composite Rotatable Design (CCRD) was employed for response surface modeling to optimize experimental conditions of the RB21 removal from aqueous solution. The significance and adequacy of the model were analyzed using analysis of variance (ANOVA). Four independent variables—including catalyst amount (0.1–0.9 g), pH (3.5–9.5), removal time (30–150 s) and dye concentration (10–50 mg/L)—were transformed to coded values and consequently second order quadratic model was built to predict the responses. The result showed that under optimized experimental conditions the removal of RB21 was over 95%.
topic Zero-Valent Iron nanoparticles
Response surface methodology (RSM)
Central composite design
Reactive Blue 21
Wastewater
url http://www.sciencedirect.com/science/article/pii/S1878535214003384
work_keys_str_mv AT mahmoodrezasohrabi optimizationofreactiveblue21removalbynanoscalezerovalentironusingresponsesurfacemethodology
AT minamoghri optimizationofreactiveblue21removalbynanoscalezerovalentironusingresponsesurfacemethodology
AT hamidrezafardmasoumi optimizationofreactiveblue21removalbynanoscalezerovalentironusingresponsesurfacemethodology
AT samaamiri optimizationofreactiveblue21removalbynanoscalezerovalentironusingresponsesurfacemethodology
AT nasimmoosavi optimizationofreactiveblue21removalbynanoscalezerovalentironusingresponsesurfacemethodology
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