The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Adsorption of As(III) from Aqueous Solution onto Iron Oxide Impregnated Activated Alumina
Abstract
The optimal parameters affecting the adsorption of arsenic ions As(III) on iron oxide impregnated activated alumina (IOIAA) were determined by conducting batch and column experiments. The adsorption of As(III) was strongly dependent on pH, temperature and initial adsorbate concentration. The adsorption process satisfied the Langmuir and Freundlich isotherms. Equilibrium studies were conducted to obtain the thermodynamic parameters and data showed the endothermic nature of adsorption. Kinetics studies showed that a pseudo first-order rate equation successfully described the adsorption process. Equilibrium was attained within 10 h and the time taken to attain equilibrium was independent of initial arsenite concentration. Column studies showed that adsorption was strongly dependent on empty bed contact time. Column design parameters such as the time taken for the establishment of primary adsorption zone, fractional capacity, length of primary adsorption zone and the percentage saturation at breakpoint were calculated to be in the range of 18.3 to 70.4 h, 0.39 to 0.63, 3.0 to 3.85 cm and 69.6 to 81.5%, respectively. The observations mentioned above provide a direct relationship between the length of the adsorption zone (δ) and percent saturation at break point.
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The rate of arsenic adsorption and capacity of adsorbents further depends on presence of other ions like phosphate, silicate, HCO3−, and Ca2+ competing for the adsorption sites.
“Lin and Wu [172] reviewed that the rate of As adsorption and capacity adsorbents further depends on presence of other ions like phosphate, silicate, HCO−3, and Ca2+ competing for the adsorption sites. Zhu et al. [170] and Kanematsu et al. [171] also substantiated this fact.”
From Arsenic Contamination of Groundwater: A Review of Sources, Prevalence, Health Risks, and Strategies for Mitigation (2014) · cites this paper as [170]
The removal of arsenic by adsorption techniques in general depends on pH and the speciation of arsenic, with better AsV removals compared to AsIII at pH lower than 7.
“The removal of As by adsorption techniques in general depends on pH and the speciation of As with better AsV removals as compared to AsIII at pH lower than 7 [167–171].”
From Arsenic Contamination of Groundwater: A Review of Sources, Prevalence, Health Risks, and Strategies for Mitigation (2014) · cites this paper as [170]
Citations
Cites
Arsenate and Chromate Retention Mechanisms on Goethite. 1. Surface Structure
Fendorf, S., Eick, M. J., Grossl, P., & Sparks, D. L. (1997) · Environmental Science & Technology · doi:10.1021/es950653t · Cited by 1,017
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Arsenic removal from water/wastewater using adsorbents—A critical review
Mohan, D., & Pittman, C. U. (2007) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2007.01.006 · Cited by 3,536
Shankar, S., Shanker, U., & Shikha (2014) · The Scientific World Journal · doi:10.1155/2014/304524 · Cited by 616
“Various pretreatments like impregnation with Fe [173, 175], alum [176], manganese acetate [177], and posthydrolysis [177] have also been explored at lab scale to improve the adsorption efficiency of AA with promising results.”
BackgroundIron and aluminium based adsorption strategies for removing arsenic from water
Giles, D. E., Mohapatra, M., Issa, T. B., Anand, S., & Singh, P. (2011) · Journal of Environmental Management · doi:10.1016/j.jenvman.2011.07.018 · Cited by 345
Metadata
- Authors
- Kuriakose, S., Singh, T. S., & Pant, K. K.
- Affiliations
- Indian Institute of Technology Delhi (IN)
- Corresponding author
- Pant, Kamal K.
- ORCID
- Pant, Kamal K.
- Venue
- Water Quality Research Journal
- Publisher
- IWA Publishing
- Published
- 2004-08-01
- Volume
- 39
- Issue
- 3
- Pages
- 258-266
- ISSN
- 1201-3080 (ISSN-L)
- 2408-9443
- OpenAlex
- W92347561
- Cited by
- 103
- References
- 1
- Citations by year
- 2025: 4 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 4 · 2017: 5 · 2016: 6 · 2015: 5 · 2014: 3 · 2013: 11 · 2012: 3
- FWCI
- 5.86
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Water Quality Research Journal (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
- Keywords
- arsenic adsorption, arsenite, adsorption isotherms, Langmuir isotherm, Freundlich isotherm, adsorption thermodynamics, adsorption kinetics, pseudo-first-order kinetics, column adsorption, water treatment
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