Chemical and toxicological assessment of arsenic sorption onto Fe-sericite composite powder and beads

Jiwon Kim, Cheongho Lee, Seung Mok Lee, Lalhmunsiama, Jinho Jung

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Batch sorption and leaching of arsenic (1–30 mg L−1) on Fe-sericite composite powder and beads were investigated in this study. Fe-sericite composite powder was made from natural sericite modified with iron, and alginate was used to transform the powder into beads. The maximum sorption capacities of the Fe-sericite composite powder (15.04 and 13.21 mg g−1 for As(III) and As(V), respectively) were higher than those of the corresponding beads (9.02 and 7.11 mg g−1 for As(III) and As(V), respectively) owing to the higher specific surface area of the powder. In addition, the leaching amounts of As(III) from Fe-sericite composite beads (≤ 15.03%) were higher than those of the corresponding powder (≤ 5.71%). However, acute toxicity of As(III)-sorbed Fe-sericite composite beads toward Daphnia magna was not significantly different from that of the corresponding powder (p > 0.05). Considering higher uptake of the powder particles by the daphnids, Fe-sericite composite beads seem to be a more appropriate and safer sorbent for arsenic removal in practical application. Based on Fe content, Fe-sericite composite beads had similar or higher maximum sorption capacities (71.19 and 56.11 mg g−1 Fe for As(III) and As(V), respectively) than those of previously reported sorbents.

Original languageEnglish
Pages (from-to)80-85
Number of pages6
JournalEcotoxicology and Environmental Safety
Volume147
DOIs
Publication statusPublished - 2018 Jan 1

Keywords

  • Acute toxicity
  • Adsorption
  • Arsenic
  • Sericite
  • Sorbent

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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