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Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies

The presence of dyes in water sources that act as contaminants is hazardous to human and animal health. Therefore, this research was conducted on the removal of methylene blue (MB) using granitic residual soil-supported nano zero-valent iron (Gr-nZVI), to examine its potential use as an efficient ad...

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Main Authors: Zarime N.A., Solemon B., Yaacob W.Z.W., Jamil H., Omar R.C., Wahab W.A., Isa A.A.M.
Other Authors: 56593247000
Format: Article
Published: Elsevier B.V. 2025
Subjects:
adsorption
comparative study
dye
experimental study
iron nanoparticle
membrane
pollutant removal
removal experiment
residual soil
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spelling my.uniten.dspace-371142025-03-03T15:47:38Z Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies Zarime N.A. Solemon B. Yaacob W.Z.W. Jamil H. Omar R.C. Wahab W.A. Isa A.A.M. 56593247000 24832320000 59454687700 23975896800 35753735300 56040257700 58074943900 adsorption comparative study dye experimental study iron nanoparticle membrane pollutant removal removal experiment residual soil The presence of dyes in water sources that act as contaminants is hazardous to human and animal health. Therefore, this research was conducted on the removal of methylene blue (MB) using granitic residual soil-supported nano zero-valent iron (Gr-nZVI), to examine its potential use as an efficient adsorbent. Batch adsorption experiments were conducted in this study to examine the impact of initial dye concentration, contact time, dosage, pH and temperature effets. Based on the results, it can be inferred that Gr-nZVI (with Kd=0.1 L/g and R2 =1) exhibits superior adsorption of MB at higher metal ion concentrations when compared to granitic residual soil (Gr) (with Kd=0.0588 L/g and R2 =0.9267). The removal percentage of Gr-nZVI was found to be 100%, obtained at 100 mg/L MB ion concentration. Sorption data have been correlated with both Langmuir and Freundlich adsorption models. However, the Langmuir isotherm was the only model that showed a good fit for the adsorption of MB on Gr-nZVI. The mechanistic phases of the process were determined through kinetic energy studies. Kinetic data showed the removal of MB was 100% within 5 min for both Gr-nZVI and Gr. This indicates the very fast adsorption of MB and data followed a pseudo-second order. According to adsorption analysis, Gr demonstrated a higher adsorption capacity for MB removal compared to Gr-nZVI and nZVI. This study also highlights that nZVI does not facilitate MB adsorption, making the composite nZVI unnecessary due to Gr is capable of removing MB on its own. ? 2024 The Authors Final 2025-03-03T07:47:38Z 2025-03-03T07:47:38Z 2024 Article 10.1016/j.dwt.2024.100099 2-s2.0-85185768873 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85185768873&doi=10.1016%2fj.dwt.2024.100099&partnerID=40&md5=49843caa0281c0d275e28a6cfef73eb8 https://irepository.uniten.edu.my/handle/123456789/37114 317 100099 All Open Access; Hybrid Gold Open Access Elsevier B.V. Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
topic adsorption
comparative study
dye
experimental study
iron nanoparticle
membrane
pollutant removal
removal experiment
residual soil
spellingShingle adsorption
comparative study
dye
experimental study
iron nanoparticle
membrane
pollutant removal
removal experiment
residual soil
Zarime N.A.
Solemon B.
Yaacob W.Z.W.
Jamil H.
Omar R.C.
Wahab W.A.
Isa A.A.M.
Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies
description The presence of dyes in water sources that act as contaminants is hazardous to human and animal health. Therefore, this research was conducted on the removal of methylene blue (MB) using granitic residual soil-supported nano zero-valent iron (Gr-nZVI), to examine its potential use as an efficient adsorbent. Batch adsorption experiments were conducted in this study to examine the impact of initial dye concentration, contact time, dosage, pH and temperature effets. Based on the results, it can be inferred that Gr-nZVI (with Kd=0.1 L/g and R2 =1) exhibits superior adsorption of MB at higher metal ion concentrations when compared to granitic residual soil (Gr) (with Kd=0.0588 L/g and R2 =0.9267). The removal percentage of Gr-nZVI was found to be 100%, obtained at 100 mg/L MB ion concentration. Sorption data have been correlated with both Langmuir and Freundlich adsorption models. However, the Langmuir isotherm was the only model that showed a good fit for the adsorption of MB on Gr-nZVI. The mechanistic phases of the process were determined through kinetic energy studies. Kinetic data showed the removal of MB was 100% within 5 min for both Gr-nZVI and Gr. This indicates the very fast adsorption of MB and data followed a pseudo-second order. According to adsorption analysis, Gr demonstrated a higher adsorption capacity for MB removal compared to Gr-nZVI and nZVI. This study also highlights that nZVI does not facilitate MB adsorption, making the composite nZVI unnecessary due to Gr is capable of removing MB on its own. ? 2024 The Authors
author2 56593247000
author_facet 56593247000
Zarime N.A.
Solemon B.
Yaacob W.Z.W.
Jamil H.
Omar R.C.
Wahab W.A.
Isa A.A.M.
format Article
author Zarime N.A.
Solemon B.
Yaacob W.Z.W.
Jamil H.
Omar R.C.
Wahab W.A.
Isa A.A.M.
author_sort Zarime N.A.
title Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies
title_short Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies
title_full Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies
title_fullStr Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies
title_full_unstemmed Removal of Methylene Blue by Granitic Residual Soil Supported Nano Zero Valent Iron (Gr-nZVI): Kinetic and Equilibrium Studies
title_sort removal of methylene blue by granitic residual soil supported nano zero valent iron (gr-nzvi): kinetic and equilibrium studies
publisher Elsevier B.V.
publishDate 2025
_version_ 1826077573041356800
score 13.244413

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