Comparative Evaluation of Biosynthesized Nanoscale Zerovalent Iron and Iron-Oxide Nanoparticles in Mercury Adsorption

Salawu Omobayo Adio; Chanbasha Basheer; Mohammed Omar Hussein; Mohammed Nahid Siddiqui; Bassam Tawabini

doi:10.1061/(ASCE)EE.1943-7870.0001515

Comparative Evaluation of Biosynthesized Nanoscale Zerovalent Iron and Iron-Oxide Nanoparticles in Mercury Adsorption

Salawu Omobayo Adio, Chanbasha Basheer^*, Mohammed Omar Hussein, Mohammed Nahid Siddiqui, Bassam Tawabini

^*Corresponding author for this work

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

3 Scopus citations

Abstract

An environmentally friendly approach was adopted in the synthesis of nanoscale zerovalent iron (NZVI) and iron oxide nanoparticles (Fe2O3). Plant extracts from aloe vera and myrtle were used as reducing agents for the synthesis of NZVI. Physical and chemical properties of the biosynthesized nanoparticles were characterized. The adsorption properties of the biosynthesized nanoparticles were evaluated by batch adsorption at varying conditions of pH, initial concentration, contact time, agitation speed, and adsorbent dosage. NZVI (81.9%) demonstrated the highest removal efficiency at pH 7 compared to Fe2O3 (77.5%). The experimental results fit the Langmuir model with a correlation efficiency of 0.973 and 0.992 for NZVI and Fe2O3, respectively. NZVI showed higher maximum adsorption capacity compared to Fe2O3. The results obtained for both adsorbents also fit to pseudo-second-order kinetics, suggesting that the adsorption of mercury to both adsorbents is a physical, monolayer, and homogeneous process.

Original language	English
Article number	04019037
Journal	Journal of Environmental Engineering, ASCE
Volume	145
Issue number	7
DOIs	https://doi.org/10.1061/(ASCE)EE.1943-7870.0001515
State	Published - 1 Jul 2019

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Publisher Copyright:
© 2019 American Society of Civil Engineers.

Keywords

Adsorption
Biosynthesis
Iron oxide
Mercury removal
Nanoparticles
Nanoscale zerovalent iron

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Civil and Structural Engineering
General Environmental Science

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title = "Comparative Evaluation of Biosynthesized Nanoscale Zerovalent Iron and Iron-Oxide Nanoparticles in Mercury Adsorption",

abstract = "An environmentally friendly approach was adopted in the synthesis of nanoscale zerovalent iron (NZVI) and iron oxide nanoparticles (Fe2O3). Plant extracts from aloe vera and myrtle were used as reducing agents for the synthesis of NZVI. Physical and chemical properties of the biosynthesized nanoparticles were characterized. The adsorption properties of the biosynthesized nanoparticles were evaluated by batch adsorption at varying conditions of pH, initial concentration, contact time, agitation speed, and adsorbent dosage. NZVI (81.9\%) demonstrated the highest removal efficiency at pH 7 compared to Fe2O3 (77.5\%). The experimental results fit the Langmuir model with a correlation efficiency of 0.973 and 0.992 for NZVI and Fe2O3, respectively. NZVI showed higher maximum adsorption capacity compared to Fe2O3. The results obtained for both adsorbents also fit to pseudo-second-order kinetics, suggesting that the adsorption of mercury to both adsorbents is a physical, monolayer, and homogeneous process.",

keywords = "Adsorption, Biosynthesis, Iron oxide, Mercury removal, Nanoparticles, Nanoscale zerovalent iron",

author = "Adio, \{Salawu Omobayo\} and Chanbasha Basheer and Hussein, \{Mohammed Omar\} and Siddiqui, \{Mohammed Nahid\} and Bassam Tawabini",

note = "Publisher Copyright: {\textcopyright} 2019 American Society of Civil Engineers.",

year = "2019",

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doi = "10.1061/(ASCE)EE.1943-7870.0001515",

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T1 - Comparative Evaluation of Biosynthesized Nanoscale Zerovalent Iron and Iron-Oxide Nanoparticles in Mercury Adsorption

AU - Adio, Salawu Omobayo

AU - Basheer, Chanbasha

AU - Hussein, Mohammed Omar

AU - Siddiqui, Mohammed Nahid

AU - Tawabini, Bassam

PY - 2019/7/1

Y1 - 2019/7/1

N2 - An environmentally friendly approach was adopted in the synthesis of nanoscale zerovalent iron (NZVI) and iron oxide nanoparticles (Fe2O3). Plant extracts from aloe vera and myrtle were used as reducing agents for the synthesis of NZVI. Physical and chemical properties of the biosynthesized nanoparticles were characterized. The adsorption properties of the biosynthesized nanoparticles were evaluated by batch adsorption at varying conditions of pH, initial concentration, contact time, agitation speed, and adsorbent dosage. NZVI (81.9%) demonstrated the highest removal efficiency at pH 7 compared to Fe2O3 (77.5%). The experimental results fit the Langmuir model with a correlation efficiency of 0.973 and 0.992 for NZVI and Fe2O3, respectively. NZVI showed higher maximum adsorption capacity compared to Fe2O3. The results obtained for both adsorbents also fit to pseudo-second-order kinetics, suggesting that the adsorption of mercury to both adsorbents is a physical, monolayer, and homogeneous process.

AB - An environmentally friendly approach was adopted in the synthesis of nanoscale zerovalent iron (NZVI) and iron oxide nanoparticles (Fe2O3). Plant extracts from aloe vera and myrtle were used as reducing agents for the synthesis of NZVI. Physical and chemical properties of the biosynthesized nanoparticles were characterized. The adsorption properties of the biosynthesized nanoparticles were evaluated by batch adsorption at varying conditions of pH, initial concentration, contact time, agitation speed, and adsorbent dosage. NZVI (81.9%) demonstrated the highest removal efficiency at pH 7 compared to Fe2O3 (77.5%). The experimental results fit the Langmuir model with a correlation efficiency of 0.973 and 0.992 for NZVI and Fe2O3, respectively. NZVI showed higher maximum adsorption capacity compared to Fe2O3. The results obtained for both adsorbents also fit to pseudo-second-order kinetics, suggesting that the adsorption of mercury to both adsorbents is a physical, monolayer, and homogeneous process.

KW - Adsorption

KW - Biosynthesis

KW - Iron oxide

KW - Mercury removal

KW - Nanoparticles

KW - Nanoscale zerovalent iron

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DO - 10.1061/(ASCE)EE.1943-7870.0001515

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ER -

Comparative Evaluation of Biosynthesized Nanoscale Zerovalent Iron and Iron-Oxide Nanoparticles in Mercury Adsorption

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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