Removal of arsenic from water streams: an overview of available techniques

Václavíková, Miroslava; Gallios, George P.; Hredzák, Slavomír; Jakabský, Štefan

doi:10.1007/s10098-007-0098-3

Cited by 153 publications

(89 citation statements)

References 55 publications

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“…Some investigations suggest that the oxidation of As(III) to As(V) using manganese dioxide involves the reduction of Mn(IV) to Mn(III), followed by Mn(III) to Mn(II), consistent with one electron transfer reactions 9,[17][18][19][20] . Many works on the complexation of arsenite and arsenate by manganese dioxide using XAFS show that As(III) is oxidized to As(V), while only arsenate is adsorbed onto MnO 2 surfaces [20][21][22] .…”

Section: Arsenic Immobilization Experimentsmentioning

confidence: 99%

“…The As(III) sorption isotherms are shown in Figure 5. The maximum ), for the same range of initial arsenic concentration (less than 50 mg.L -1 ) 9 . The composite and the Mn 3 O 4 sample have shown high and similar affinity for As(III).…”

Section: Arsenic Immobilization Experimentsmentioning

confidence: 99%

“…Therefore, an oxidation step is often used to improve arsenic removal and fixation. Manganese oxides are known as effective oxidizers of As(III) to As(V) in natural environments and in water treatment units [6][7][8][9][10] . Among the series of manganese oxides, Mn 3 O 4 is particularly known to be an effective and inexpensive catalyst in various oxidation and reduction reactions 11,12 .…”

Section: Introductionmentioning

confidence: 99%

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Preparation and application of a magnetic composite (Mn3O4/Fe3O4) for removal of As(III) from aqueous solutions

et al. 2012

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The introduction of magnetic properties in adsorbent materials has the aim of improving solid-liquid separation processes. In this work, a magnetic composite was synthesized through the precipitation of manganese oxide in the presence of magnetite particles using O 2 as an oxidant. The composite proved to be chemically and physically stable within a wide range of pH values. The composite characterization indicated that hausmannite (Mn 3 O 4 ) represents the precipitated manganese phase and that magnetite undergoes no phase transformation during the synthesis. The composite and Mn 3 O 4 particles were used to remove As(III) from aqueous solutions. The magnetic composite and Mn 3 O 4 sample presented high and similar affinity for As(III), with maximum sorptive capacities of 14 mg As g solid -1 (0.0048 mmol As m

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Section: Arsenic Immobilization Experimentsmentioning

confidence: 99%

Section: Arsenic Immobilization Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and application of a magnetic composite (Mn3O4/Fe3O4) for removal of As(III) from aqueous solutions

et al. 2012

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“…It is generally found that the inorganic species, arsenite and arsenate are the predominant species in most environments than organic ones which might also be present [27]. In general, inorganic compounds of arsenic are regarded as more toxic than most organic forms [28,29].…”

Section: Arsenic (As)mentioning

confidence: 99%

Heavy Metal Uptake Potential of Aquatic Plants through Phytoremediation Technique - A Review

Wani¹,

Ganai²,

Shah³

et al. 2017

J Bioremediat Biodegrad

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Bioremediation means using biological agents to clean environment. Heavy metal pollution being the core all over the word needs immediate attention so that our degrading environments will be remediated. Phytoremediation is an ecofriendly that has shown promising results for the contaminants like heavy metals. The basic fundamental elements in phytoremediation are plants whether terrestrial or aquatic which play key role for remediation of heavy metal affected environments. Phytoremediation has also been a solution for various emerging problems.

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“…According to Vaclavikova et al (2008), the distribution of As (III) and As (V) in the species is shown in Figs.2 and 3. These figures show that at pH values of 5 to 8, the neutral H 3 AsO 3 species predominate in As (III), while at pH 8 the H 2 AsO 4 -species predominate and at pH 5 the HAsO 4 2-species predominate in As (V).…”

Section: Effect Of Ph On the Removal Of Arsenic By D296mentioning

confidence: 99%

Arsenic removal from Pinctada martensii enzymatic hydrolysate by using Zr(IV)-loaded chelating resin

Yang

Dai

Sun

et al. 2013

J. Ocean Univ. China

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The present study investigated the removal of inorganic arsenic from Pinctada martensii enzymatic hydrolysate through unmodified resin (D296) and Zr(Ⅳ)-loaded chelating resin (Zr-D401). By loading Zr to macroporous chelating resin D401, the as exchange adsorption active sites are generated. This transforms D401 from a material that does not have the arsenic adsorption capacity into a material that has excellent arsenic exchange adsorption capacity. The static adsorption experiments were conducted to investigate the optimal removal condition for D296 and Zr-D401. The experimental results show that: the optimum condition for D296 is that T= 25℃, pH = 5, resin additive amount = 1 g (50 mL) -1 , and contact time = 10 h, the corresponding arsenic removal rate being 65.7%, and protein loss being 2.33%; the optimum condition for Zr-D401 is that T=25℃, pH = 8, resin additive amount = 1 g (50 mL) -1 , and contact time=10 h, the corresponding arsenic removal rate being 70.3%, and protein loss being 4.65%. These results show that both of the two resins are effective in arsenic removal for preserving useful substance. Our research provides scientific evidence and advances in the processing technology for heavy metal removal in shellfish.

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Removal of arsenic from water streams: an overview of available techniques

Cited by 153 publications

References 55 publications

Preparation and application of a magnetic composite (Mn3O4/Fe3O4) for removal of As(III) from aqueous solutions

Preparation and application of a magnetic composite (Mn3O4/Fe3O4) for removal of As(III) from aqueous solutions

Heavy Metal Uptake Potential of Aquatic Plants through Phytoremediation Technique - A Review

Arsenic removal from Pinctada martensii enzymatic hydrolysate by using Zr(IV)-loaded chelating resin

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