Application of iron-modified biochar for arsenite removal and toxicity reduction

Jiwon Kim; Jinyoung Song; Seung Mok Lee; Jinho Jung

doi:10.1016/j.jiec.2019.07.026

Application of iron-modified biochar for arsenite removal and toxicity reduction

Jiwon Kim, Jinyoung Song, Seung Mok Lee, Jinho Jung

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

78 Citations (Scopus)

Abstract

In the present study, the Miscanthus biochar was modified with amorphous iron (hydr)oxide to remove arsenite. The kinetic study indicated the chemical adsorption of arsenite on the iron-modified biochar. Additionally, the iron-modified biochar exhibited similar or higher adsorption of arsenite (56.06 and 47.90 mg/g Fe for powder and beads, respectively) than previously reported composites. Moreover, the leached arsenite concentration from both the adsorbents was less than 2.02 mg/L, which was not acutely toxic to Daphnia magna. Considering that it is not easy and safe to use adsorbents in powder form, the iron-modified biochar beads can be a promising adsorbent.

Original language	English
Pages (from-to)	17-22
Number of pages	6
Journal	Journal of Industrial and Engineering Chemistry
Volume	80
DOIs	https://doi.org/10.1016/j.jiec.2019.07.026
Publication status	Published - 2019 Dec 25

Bibliographical note

Publisher Copyright:
© 2019 The Korean Society of Industrial and Engineering Chemistry

Keywords

Acute toxicity
Adsorption
Arsenic
Biochar
Iron

ASJC Scopus subject areas

General Chemical Engineering

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10.1016/j.jiec.2019.07.026

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title = "Application of iron-modified biochar for arsenite removal and toxicity reduction",

abstract = "In the present study, the Miscanthus biochar was modified with amorphous iron (hydr)oxide to remove arsenite. The kinetic study indicated the chemical adsorption of arsenite on the iron-modified biochar. Additionally, the iron-modified biochar exhibited similar or higher adsorption of arsenite (56.06 and 47.90 mg/g Fe for powder and beads, respectively) than previously reported composites. Moreover, the leached arsenite concentration from both the adsorbents was less than 2.02 mg/L, which was not acutely toxic to Daphnia magna. Considering that it is not easy and safe to use adsorbents in powder form, the iron-modified biochar beads can be a promising adsorbent.",

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AU - Kim, Jiwon

AU - Song, Jinyoung

AU - Lee, Seung Mok

AU - Jung, Jinho

PY - 2019/12/25

Y1 - 2019/12/25

N2 - In the present study, the Miscanthus biochar was modified with amorphous iron (hydr)oxide to remove arsenite. The kinetic study indicated the chemical adsorption of arsenite on the iron-modified biochar. Additionally, the iron-modified biochar exhibited similar or higher adsorption of arsenite (56.06 and 47.90 mg/g Fe for powder and beads, respectively) than previously reported composites. Moreover, the leached arsenite concentration from both the adsorbents was less than 2.02 mg/L, which was not acutely toxic to Daphnia magna. Considering that it is not easy and safe to use adsorbents in powder form, the iron-modified biochar beads can be a promising adsorbent.

AB - In the present study, the Miscanthus biochar was modified with amorphous iron (hydr)oxide to remove arsenite. The kinetic study indicated the chemical adsorption of arsenite on the iron-modified biochar. Additionally, the iron-modified biochar exhibited similar or higher adsorption of arsenite (56.06 and 47.90 mg/g Fe for powder and beads, respectively) than previously reported composites. Moreover, the leached arsenite concentration from both the adsorbents was less than 2.02 mg/L, which was not acutely toxic to Daphnia magna. Considering that it is not easy and safe to use adsorbents in powder form, the iron-modified biochar beads can be a promising adsorbent.

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KW - Adsorption

KW - Arsenic

KW - Biochar

KW - Iron

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SP - 17

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JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

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Application of iron-modified biochar for arsenite removal and toxicity reduction

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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