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Gurbuz F, Akpınar Ş, Ozcan S, Acet Ö, Odabaşı M. Reducing arsenic and groundwater contaminants down to safe level for drinking purposes via Fe 3+-attached hybrid column. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:722. [PMID: 31696322 DOI: 10.1007/s10661-019-7862-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
Monitoring of groundwater is fundamentally important due to it has emerged as a major source of drinking water and also used for irrigation purposes in many places in the world. Arsenic contamination in surface water and groundwater resources is a major concern due to its presence at high concentration and associated adverse health effects. Thus, the remediation of As in water resources, alongside other chemical species including fluoride, lithium, vanadium aluminium and nitrate is necessary. We have designed a hybrid [polyethyleneimine (PEI)-supported Fe3+-attached poly-(HEMA-co-GMA)] column for the reduction of arsenic (III and V) and other groundwater chemicals from natural groundwater as a potential contribution to water resource management. Swelling behaviour and scanning electron microscopy (SEM) were performed for the characterization of hybrid material. For the optimization of experimental conditions, the effects of pH and initial arsenic concentrations on adsorption were studied using arsenic solutions. Maximum adsorption capacity in equilibrium was 11.44 and 5.79 mg/g polymer for As(III) and As(V), respectively at pH 7. The reduction of metalloids and other subsurface chemicals were carried out with natural groundwater samples obtained from local sources. The mean concentrations of arsenic were recorded between 44.96 and 219.04 μg/L and of which 71.3-95.4 % (0.32-1.22 mg/g) were removed. The average removals were determined as F-1 50-86%, Li+ 43.2-99.7%, Al+3 83.8-91.4%, NO3- 48.4-72.2% and V 91.3-95.7. Chemical-loaded hybrid columns were regenerated successfully 15 times with only a loss of 5% in adsorption capacity by 0.01 M NaCl- treatment for potential adaptation into water industry. No pre-oxidation of As species was performed for the treatment of ground water samples prior to the hybrid column testing.
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Affiliation(s)
- Fatma Gurbuz
- Department of Environmental Engineering, Aksaray University, Aksaray, Turkey.
| | - Şahin Akpınar
- Department of Environmental Engineering, Aksaray University, Aksaray, Turkey
| | - Samet Ozcan
- Department of Environmental Engineering, Aksaray University, Aksaray, Turkey
| | - Ömür Acet
- Department of Chemistry, Faculty of Arts and Science, Aksaray University, Aksaray, Turkey
| | - Mehmet Odabaşı
- Department of Chemistry, Faculty of Arts and Science, Aksaray University, Aksaray, Turkey
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Chai L, Yang J, Liao F, Li Q, Wang Q, Liu H, Dong Q, Yin Z. Kinetics and molecular mechanism of arsenite photochemical oxidation based on sulfate radical. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Vera R, Fontàs C, Anticó E. Titanium dioxide solid phase for inorganic species adsorption and determination: the case of arsenic. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10939-10948. [PMID: 27655617 DOI: 10.1007/s11356-016-7667-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 09/09/2016] [Indexed: 06/06/2023]
Abstract
We have evaluated a new titanium dioxide (Adsorbsia As600) for the adsorption of both inorganic As (V) and As (III) species. In order to characterize the sorbent, batch experiments were undertaken to determine the capacities of As (III) and As (V) at pH 7.3, which were found to be 0.21 and 0.14 mmol g-1, respectively. Elution of adsorbed species was only possible using basic solutions, and arsenic desorbed under batch conditions was 50 % when 60 mg of loaded titanium dioxide was treated with 0.5 M NaOH solution. Moreover, its use as a sorbent for solid-phase extraction and preconcentration of arsenic species from well waters has been investigated, without any previous pretreatment of the sample. Solid-phase extraction was implemented by packing several minicolumns with Adsorbsia As600. The method has been validated showing good accuracy and precision. Acceptable recoveries were obtained when spiked waters at 100-200 μg L-1 were measured. The presence of major anions commonly found in waters did not affect arsenic adsoption, and only silicate at 100 mg L-1 level severely competed with arsenic species to bind to the material. Finally, the measured concentrations in water samples containing arsenic from the Pyrinees (Catalonia, Spain) showed good agreement with the ICP-MS results.
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Affiliation(s)
- R Vera
- Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - C Fontàs
- Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - E Anticó
- Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain.
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Yan L, Hu S, Jing C. Recent progress of arsenic adsorption on TiO 2 in the presence of coexisting ions: A review. J Environ Sci (China) 2016; 49:74-85. [PMID: 28007182 DOI: 10.1016/j.jes.2016.07.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/12/2016] [Accepted: 07/22/2016] [Indexed: 06/06/2023]
Abstract
Arsenic (As)-contaminated wastewater and groundwater pose a pressing environmental issue and worldwide concern. Adsorption of As using TiO2 materials, in combination with filtration, introduces a promising technology for the treatment of As-contaminated water. This review presents an overview on the recent progress of the application of TiO2 for removal of As from wastewater and groundwater. The main focus is on the following three pressing issues that limit the field applications of TiO2 for As removal: coexisting ions, simulation of breakthrough curves, and regeneration and reuse of spent TiO2 materials. We first examined how the coexisting ions in water, especially high concentrations of cations in industrial wastewater, affect the efficacy of As removal using the TiO2 materials. We then discussed As breakthrough curves and the effect of compounded ions on the breakthrough curves. We successfully simulated the breakthrough curves by PHREEQC after integrating the CD-MUSIC model. We further discussed challenges facing the regeneration and reuse of TiO2 media for practical applications. We offer our perspectives on remaining issues and future research needs.
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Affiliation(s)
- Li Yan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Shan Hu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chuanyong Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Beduk F. Superparamagnetic nanomaterial Fe3O4-TiO2 for the removal of As(V) and As(III) from aqueous solutions. ENVIRONMENTAL TECHNOLOGY 2016; 37:1790-1801. [PMID: 26831455 DOI: 10.1080/09593330.2015.1132777] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A magnetically separable nanomaterial Fe3O4-TiO2 was synthesized and characterized which was subsequently used for the removal of arsenic (V) from aqueous solutions. The surface morphology, magnetic properties, crystalline structure, thermal stability and Brunauer-Emmet-Teller surface area of the synthesized Fe3O4-TiO2 nanoparticles (NPs) are characterized by scanning electron microscope and high-resolution transmission electron microscope, vibrating sample magnetometry, X-ray diffractometer, thermogravimetric analysis and multi point function surface area analyzer. The saturation magnetization of Fe3O4-TiO2 NPs was determined to be 50.97 emu/g, which makes them superparamagnetic. The surface area of Fe3O4-TiO2 NPs was as much as 94.9 m(2)/g. The main factors affecting adsorption efficiency, such as solution pH, reaction time, initial As(V) concentration and adsorbent concentration are investigated. When the adsorption isotherms were analyzed by the Langmuir, Freundlich and Dubinin-Radushkevich models, equilibrium data were found to be well represented by Freundlich isotherm, and adsorption on Fe3O4-TiO2 NPs fitted well with pseudo-second-order kinetic model. The maximum adsorption capacity of As(V) on Fe3O4-TiO2 NPs, calculated by the Freundlich model was determined at 11.434 µg/g. 1.0 g/L of Fe3O4-TiO2 NPs was efficient for complete removal of 100 µg/L As(V) in 1 h. Fe3O4-TiO2 NPs was also effective for 93% removal of 100 µg/L As(III). Matrix effect was determined using As(V)-contaminated well water. Successfull results were obtained for purification of real well water containing 137.12 µg/L As(V). Results show that Fe3O4-TiO2 NPs are promising adsorbents with an advantage of magnetic separation.
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Affiliation(s)
- Fatma Beduk
- a Department of Environmental Engineering, Engineering and Architecture Faculty , Necmettin Erbakan University , Konya , Turkey
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Ćurko J, Matošić M, Crnek V, Stulić V, Mijatović I. Adsorption Characteristics of Different Adsorbents and Iron(III) Salt for Removing As(V) from Water. Food Technol Biotechnol 2016; 54:250-255. [PMID: 27904416 DOI: 10.17113/ftb.54.02.16.4064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of this study is to determine the adsorption performance of three types of adsorbents for removal of As(V) from water: Bayoxide® E33 (granular iron(III) oxide), Titansorb® (granular titanium oxide) and a suspension of precipitated iron(III) hydroxide. Results of As(V) adsorption stoichiometry of two commercial adsorbents and precipitated iron(III) hydroxide in tap and demineralized water were fitted to Freundlich and Langmuir adsorption isotherm equations, from which adsorption constants and adsorption capacity were calculated. The separation factor RL for the three adsorbents ranged from 0.04 to 0.61, indicating effective adsorption. Precipitated iron(III) hydroxide had the greatest, while Titansorb had the lowest capacity to adsorb As(V). Comparison of adsorption from tap or demineralized water showed that Bayoxide and precipitated iron(III) hydroxide had higher adsorption capacity in demineralized water, whereas Titansorb showed a slightly higher capacity in tap water. These results provide mechanistic insights into how commonly used adsorbents remove As(V) from water.
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Affiliation(s)
- Josip Ćurko
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6,
HR-10000 Zagreb, Croatia
| | - Marin Matošić
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6,
HR-10000 Zagreb, Croatia
| | - Vlado Crnek
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6,
HR-10000 Zagreb, Croatia
| | - Višnja Stulić
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6,
HR-10000 Zagreb, Croatia
| | - Ivan Mijatović
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6,
HR-10000 Zagreb, Croatia
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Salameh Y, Al-Muhtaseb AH, Mousa H, Walker GM, Ahmad MNM. Characterization of adsorption of aqueous arsenite and arsenate onto charred dolomite in microcolumn systems. ENVIRONMENTAL TECHNOLOGY 2014; 35:3029-3040. [PMID: 25244130 DOI: 10.1080/09593330.2014.929181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this work, the removal of arsenite, As(III), and arsenate, As(V), from aqueous solutions onto thermally processed dolomite (charred dolomite) via microcolumn was evaluated. The effects of mass of adsorbent (0.5-2 g), initial arsenic concentration (50-2000 ppb) and particle size (<0.355-2 mm) on the adsorption capacity of charred dolomite in a microcolumn were investigated. It was found that the adsorption of As(V) and As(III) onto charred dolomite exhibited a characteristic 'S' shape. The adsorption capacity increased as the initial arsenic concentration increased. A slow decrease in the column adsorption capacity was noted as the particle size increased from>0.335 to 0.710-2.00 mm. For the binary system, the experimental data show that the adsorption of As(V) and As(III) was independent of both ions in solution. The experimental data obtained from the adsorption process were successfully correlated with the Thomas Model and Bed Depth Service Time Model.
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Affiliation(s)
- Yousef Salameh
- a Department of Mechanical Engineering, Faculty of Engineering and Architecture , American University Beirut , Beirut , Lebanon
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Uwamariya V, Petrusevski B, Lens PNL, Amy G. Effect of calcium on adsorptive removal of As(III) and As(V) by iron oxide-based adsorbents. ENVIRONMENTAL TECHNOLOGY 2014; 35:3153-3164. [PMID: 25244144 DOI: 10.1080/09593330.2014.934739] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effects of calcium on the equilibrium adsorption capacity of As(III) and As(V) onto iron oxide-coated sand (IOCS) and granular ferric hydroxide (GFH) were investigated through batch experiments, rapid small-scale column tests (RSSCT) and kinetics modelling. Batch experiments showed that at calcium concentrations ≤ 20 mg/L, high As(III) and As(V) removal efficiencies by IOCS and GFH are achieved at pH 6. An increase of the calcium concentration to 40 and 80 mg/L reversed this trend, giving higher removal efficiencies at higher pH (8). The adsorption capacities of IOCS and GFH at an equilibrium arsenic concentration of 10 μg/L were found to be between 2.0 and 3.1 mg/g for synthetic water without calcium and between 2.8 and 5.3 mg/g when 80 mg/L of calcium was present at the studied pH values. After 10 hours of filter run in RSSCT, approximately 1000 empty bed volumes, the ratios of C/Co for As(V) were 26% and 18% for calcium-free model water; and only 1% and 0.2% after addition of 80 mg/L of Ca for filter columns with IOCS and GFH, respectively. The adsorption of As(III) and As(V) onto GFH follows a second-order reaction, with and without addition of calcium. The adsorption of As(III) and As(V) onto IOCS follows a first-order reaction without calcium addition, and moves to the second-reaction-order kinetics when calcium is added. Based on the intraparticle diffusion model, the main controlling mechanism for As(III) adsorption is intraparticle diffusion, while surface diffusion contributes greatly to the adsorption of As(V).
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Affiliation(s)
- V Uwamariya
- a UNESCO-IHE , PO Box 3015, 2601 DA Delft , The Netherlands
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