Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances
Апстракт
Mechanism and performances of arsenic(III) [As(III)] and arsenic(V) [As(V)] sorption onto hydrated iron(III) oxide (HFO)-coated materials were investigated at neutral pH where arsenic occurs in both molecular and ionic forms. Arsenic sorption by HFO-coated materials was proven to be a multistage process consisting of both macropore and intraparticle diffusion. Higher mass-transfer velocities were obtained for As(III), which is attributed to the beneficial features of HFO. Equilibrium studies revealed the spontaneous and favorable nature of the arsenic sorption process. The maximum sorption capacity and the Gibbs free energy values indicated that HFO-coated materials exhibit more affinity towards As(III). The Langmuir and Freundlich isotherm models revealed both the chemical and physical nature of the sorption process, while the Dubinin-Radushkevich model indicated that physical sorption is a more dominant process with HFO-coated materials. Water Environ. Res., 83, 498 (2011).
Кључне речи:
arsenic adsorption kinetics / equilibrium / hydrated iron(III) oxideИзвор:
Water Environment Research, 2011, 83, 6, 498-506Издавач:
- Water Environment Federation
DOI: 10.2175/106143010X12851009156484
ISSN: 1061-4303
PubMed: 21751708
WoS: 000291209800002
Scopus: 2-s2.0-79960324781
Колекције
Институција/група
GraFarTY - JOUR AU - Lekić, Branislava AU - Vukasinovic-Pesić, Vesna L. AU - Rajaković, Ljubinka V. PY - 2011 UR - https://grafar.grf.bg.ac.rs/handle/123456789/399 AB - Mechanism and performances of arsenic(III) [As(III)] and arsenic(V) [As(V)] sorption onto hydrated iron(III) oxide (HFO)-coated materials were investigated at neutral pH where arsenic occurs in both molecular and ionic forms. Arsenic sorption by HFO-coated materials was proven to be a multistage process consisting of both macropore and intraparticle diffusion. Higher mass-transfer velocities were obtained for As(III), which is attributed to the beneficial features of HFO. Equilibrium studies revealed the spontaneous and favorable nature of the arsenic sorption process. The maximum sorption capacity and the Gibbs free energy values indicated that HFO-coated materials exhibit more affinity towards As(III). The Langmuir and Freundlich isotherm models revealed both the chemical and physical nature of the sorption process, while the Dubinin-Radushkevich model indicated that physical sorption is a more dominant process with HFO-coated materials. Water Environ. Res., 83, 498 (2011). PB - Water Environment Federation T2 - Water Environment Research T1 - Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances EP - 506 IS - 6 SP - 498 VL - 83 DO - 10.2175/106143010X12851009156484 ER -
@article{ author = "Lekić, Branislava and Vukasinovic-Pesić, Vesna L. and Rajaković, Ljubinka V.", year = "2011", abstract = "Mechanism and performances of arsenic(III) [As(III)] and arsenic(V) [As(V)] sorption onto hydrated iron(III) oxide (HFO)-coated materials were investigated at neutral pH where arsenic occurs in both molecular and ionic forms. Arsenic sorption by HFO-coated materials was proven to be a multistage process consisting of both macropore and intraparticle diffusion. Higher mass-transfer velocities were obtained for As(III), which is attributed to the beneficial features of HFO. Equilibrium studies revealed the spontaneous and favorable nature of the arsenic sorption process. The maximum sorption capacity and the Gibbs free energy values indicated that HFO-coated materials exhibit more affinity towards As(III). The Langmuir and Freundlich isotherm models revealed both the chemical and physical nature of the sorption process, while the Dubinin-Radushkevich model indicated that physical sorption is a more dominant process with HFO-coated materials. Water Environ. Res., 83, 498 (2011).", publisher = "Water Environment Federation", journal = "Water Environment Research", title = "Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances", pages = "506-498", number = "6", volume = "83", doi = "10.2175/106143010X12851009156484" }
Lekić, B., Vukasinovic-Pesić, V. L.,& Rajaković, L. V.. (2011). Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances. in Water Environment Research Water Environment Federation., 83(6), 498-506. https://doi.org/10.2175/106143010X12851009156484
Lekić B, Vukasinovic-Pesić VL, Rajaković LV. Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances. in Water Environment Research. 2011;83(6):498-506. doi:10.2175/106143010X12851009156484 .
Lekić, Branislava, Vukasinovic-Pesić, Vesna L., Rajaković, Ljubinka V., "Enhanced Arsenic Sorption by Hydrated Iron (III) Oxide-Coated Materials-Mechanism and Performances" in Water Environment Research, 83, no. 6 (2011):498-506, https://doi.org/10.2175/106143010X12851009156484 . .