Arsenite removal from waters by zero valent iron: Batch and column tests

Biterna, M.; Antonoglou, Lemonia; Lazou, E.; Voutsa, Dimitra

doi:10.1016/j.chemosphere.2009.10.007

Cited by 68 publications

(29 citation statements)

References 38 publications

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“…PH 7 was determined to be the optimal pH, because pH values higher than 7 did not have a significant influence on arsenite removal efficiency and the removal efficiency remained almost constant. These results are close to the results of Biterna et al [15] They investigated arsenate removal using zero-valent iron powder and the results showed that the highest arsenic removal efficiency occurred at an initial concentration of 200 μg/l, with 2 g zero-valent iron at pH 7.…”

Section: The Effects Of Ph and Dose Of Waste Ironsupporting

confidence: 93%

Removal of arsenic from aqueous solutions using waste iron columns inoculated with iron bacteria

Azhdarpoor

Nikmanesh

Samaei

2015

Environmental Technology

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Arsenic contamination of water resources is one of the serious risks threatening natural ecosystems and human health. This study investigates arsenic removal using a waste iron column with and without iron bacteria in continuous and batch phases. In batch experiments, the effects of pH, contact time, initial concentration of arsenic and adsorbent dose were investigated. Results indicated that the highest arsenate removal efficiency occurred at pH 7 (96.76%). On increasing the amount of waste iron from 0.25 to 1 g, the removal rate changed from about 42.37%-96.70%. The results of continuous experiments on the column containing waste iron showed that as the empty bed contact time increased from 5 to 60 min, the secondary arsenate concentration changed from 23 to 6 µg/l. In experiments involving a waste iron column with iron bacteria, an increase in residence time from 5 to 60 min decreased the secondary arsenate concentration from 14.97 to 4.86 µg/l. The results of this study showed that waste iron containing iron bacteria is a good adsorbent for removal of arsenic from contaminated water.

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Section: The Effects Of Ph and Dose Of Waste Ironsupporting

confidence: 93%

Removal of arsenic from aqueous solutions using waste iron columns inoculated with iron bacteria

Azhdarpoor

Nikmanesh

Samaei

2015

Environmental Technology

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“…[13] removed arsenite from water using ZVI with a maximum sorption capacity of 1.92 mg As/g ZVI, pH not specified. [11] Also Kanel et.al. [3] reported that maximum As(III) adsorption capacity was 3.5 mg As(III)/gr by nano-ZVI after 12 h reaction time at pH=7.…”

Section: Introductionmentioning

confidence: 94%

“…Therefore many research groups use ZVI to remove arsenic from waters. [3,[10][11][12] Adsorption of As(III) was rapid on ferric hydroxide formed via Fe(0) surface oxidation by dissolved oxygen.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of robust zero valent iron/mesoporous carbon composites and their applications in arsenic removal

Baikousi

Georgiou

Daikopoulos

et al. 2015

Carbon

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“…A number of previous investigations have been devoted to finding an effective technological solution for arsenic removal from natural waters. The studies have encompassed sorption processes using Fe-treated activated carbon, Fe-treated gel beads and iron oxide-coated sand [18] as well as activated carbon, [19] zero-valent iron [20] and iron hydroxide granules, [21] synthetic siderite, [22] ferric and alum salts, [23] activated alumina, [24] ion exchange, [25] a lignocellulose adsorption medium, [26] a permanganate -Fe(II) process, [27] and membrane processes. [28,29] A number of these studies have shown that arsenic is more efficiently removed from water if it is present in the As(V) form, that is, if As(III) is oxidized to As(V).…”

Section: Introductionmentioning

confidence: 99%

Effect of extremely high specific flow rates on the removal of NOM and arsenic from groundwater with an ion-exchange resin: A pilot-scale study in Northern Serbia

Kukučka¹,

Kukučka²,

Vojinovic-Miloradov

et al. 2011

Journal of Environmental Science and Health, Part A

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A pilot-scale study was performed to explore the possibility of the removal of natural organic matter (NOM) and arsenic from groundwater in the village of Melenci (Northern Serbia) using strongly basic, macroporous ion-exchange resin, commercially available as Amberlite IRA 958-Cl. The influences of the specific flow rate (SFR) and a broad range of contact times were studied using native groundwater and the same water pretreated with sodium hypochlorite (NaClO) for the oxidation of As(III) to As(V) and the degradation of NOM. The investigated SFR exceeded the manufacturer's recommended maximum value by up to ten times. In the range of SFR from 50 to 300 bed volumes per hour (BV/h), a higher efficiency of NOM removal was achieved in the absence of the oxidant, whereas at lower SFR and shorter contact times, the efficiency was higher when the water was pretreated. The arsenic removal from the oxidant-pretreated water was equally efficient at all SFR, whereas in the absence of the oxidant the efficiency was significantly lower and did not depend on SFR. The effectiveness of the resin illustrates the fact that the experimentally determined optimum SFR value of 30 BV/h is stated as the maximum in the manufacturer's specifications.

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Arsenite removal from waters by zero valent iron: Batch and column tests

Cited by 68 publications

References 38 publications

Removal of arsenic from aqueous solutions using waste iron columns inoculated with iron bacteria

Removal of arsenic from aqueous solutions using waste iron columns inoculated with iron bacteria

Synthesis and characterization of robust zero valent iron/mesoporous carbon composites and their applications in arsenic removal

Effect of extremely high specific flow rates on the removal of NOM and arsenic from groundwater with an ion-exchange resin: A pilot-scale study in Northern Serbia

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