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Author Shanmugaraj, K.; Vinoth, V.; Pugazhenthiran, N.; Valdes, H.; Salvo, C.; Sepulveda, E.; Mangalaraja, R.V.
Title Ferrihydrite- Graphene oxide foams as an efficient adsorbent for Arsenic (III) removal from an aqueous solution Type
Year 2023 Publication Inorganic Chemistry Communications Abbreviated Journal Inorg. Chem. Commun.
Volume 153 Issue Pages 110892
Keywords Ferrihydrite-graphene oxide foams; Arsenic (III); Adsorption capacity; Langmuir model; Structural characterization
Abstract We report the synthesis of a new range of ferrihydrite-graphene oxide (FH-GO) foams using chitosan as cross linker, with varying iron content (5 wt%, 10 wt%, and 20 wt% of FH) as highly efficient adsorbents for the removal of arsenic (III) (As(III)) in an aqueous solution. The sonochemical methods were adopted to synthesize various FH-GO foams and were further characterized by XRD, SEM, TEM, FTIR, Raman, and XPS techniques. The synthesized materials were used for the removal of As(III) in both batch and fixed bed absorbent column methods. The adsorption isotherm results showed that the 10 wt% of FH-GO foams demonstrated a superior adsorbent for the As(III) with high adsorption capacities than that of the other two FH-GO foams (5 wt% and 20 wt% of FH). Moreover, 10 wt% of FH-GO foams was also demonstrated to be nearly a complete (>98.4%) removal of As(III) ions at neutral pH 7. The adsorption isotherm fitted very well with the Langmuir model with the highest accuracy data for all the synthesized adsorbent materials. In addition, the fixed bed absorbent column method was also adopted for the removal of As(III) ions in the water sample, which showed > 99.2% of removal efficiency. The outstanding adsorption capabilities, along with their easy and low-cost synthesis, make these kinds of adsorbents extremely capable for commercial applications in wastewater treatment and drinking water purification.
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ISSN 1387-7003 ISBN Medium
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Notes WOS:001015393200001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1843
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