Arsenic in the marine and aquatic environments: Analysis, occurrence, and significance

Penrose, W.R.; Woolson, E. A.

doi:10.1080/10643387409381621

Cited by 170 publications

(80 citation statements)

References 74 publications

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“…Therefore, it is noteworthy that the continuous regulations strengthening make necessary the improvement of existing arsenic remediation methods. [2,3].…”

Section: Introductionmentioning

confidence: 99%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

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In the present work, superparamagnetic iron oxide nanoparticles (SPION) surface-coated with 3-mercaptopropanoic acid (3-MPA) were prepared and their feasibility for the removal of arsenate from dilute aqueous solutions was demonstrated. The synthesized 3-MPA-coated SPION was characterized using transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier transform infra-red spectrometry (FTIR). Separation efficiency of the coated nanoparticles and the equilibrium isotherm of arsenate adsorption were investigated. The obtained results reveal the arsenate adsorption to be highly pH-dependent, and the maximum adsorption was attained in less than 60 minutes. The resulting increase of 3-MPA-coated SPION adsorption capacity to twice the adsorption capacity of SPION alone under the same conditions is attributed to the increase of active adsorption sites. An adsorption reaction is proposed. On the other hand, efficient recovery of arsenate from the loaded nanoparticles was achieved using nitric acid (HNO 3 ) solution, which also provides a concentration over the original arsenate solution. HIGHLIGHTS• Feasibility of using SPION modified with 3MPA for the removal of As(V).• The adsorbent system results in an effective sorption for selective As(V) removal.• The adsorption capacity for As(V) is higher comparing with other adsorbent systems.• Adsorption mechanism has been proposed as the most suitable considering the results.

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“…Therefore, it is noteworthy that the continuous regulations strengthening make necessary the improvement of existing arsenic remediation methods. [2,3].…”

Section: Introductionmentioning

confidence: 99%

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Morillo

Uheida

Pérez

et al. 2015

Journal of Colloid and Interface Science

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“…Various fish species have been analyzed for arsenic by Woidich and Pfannhauser (6). High concentrations were observed in conger eels (12-30 mg/kg), plaice (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17) mg/kg), shrimp (0.4-12 mg/kg), sturgeon (0.7-12 mg/kg) and cod (2)(3)(4)(5)(6)(7)(8)(9)(10) mg/kg).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of arsenic in plaice (Pleuronectes platessa), nature of organo-arsenic compound present and its excretion by man.

Luten¹,

Riekwel-Booy²,

Rauchbaar³

1982

Environ Health Perspect

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The arsenic content in 255 samples of plaice (Pleuronectes platessa) varied between 3 and 166 mg/kg. About 65% of the samples had an arsenic content above 10 mg/kg. High (low) arsenic concentration in the fillet corresponds with a high (low) concentration in milt or roe.An excretion experiment with eight human volunteers showed that after the consumption of plaice, 69-85% of the ingested arsenic was excreted in the urine within five days. The organo-arsenic compound present in plaice was isolated by means of extraction, ion-exchange and thin-layer chromatography. Field desorption mass spectrometry of the isolate showed that arsenic was present as arsenobetaine, (CH3)3AICH2COO-.

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“…The experiments were carried out with solutions of As(V) containing 0.25 mol L -1 of Cl -, NO 3 -, SO 4 2-or PO 4 3-(ratio 20:1 respect of As(V) total in solution) were treated to observe the behaviour of the absorbent system in the presence of interfering anions. The experiments were performed in the same way as the adsorption experiments by mixing a known amount of Forager Sponge-loaded SPION with the solutions using rotary shaker at room temperature (23 ºC).…”

Section: Anion Selectivity Experimentsmentioning

confidence: 99%

“…However, in natural waters arsenic is found mostly as As(III) and As(V) [3]. The World Health Organization has reduced the MCL (Maximum Contaminant Level) from 50 µg/L to 10 µg/L [4,5]. Thus, there is a growing interest in using low-cost methods and materials to remove arsenic from industrial effluents (mainly mine industry) before it may cause significant contamination.…”

Section: Introductionmentioning

confidence: 99%

“…A literature survey identifies different nano-size iron oxides structures such as maghemite (γ-Fe 2 O 3 ) [14], siderite (FeCO 3 ) or fougerite ([Fe(II) 4 Fe(III) 2 (OH) 12 ][CO 3 .2H 2 O]) being used to study the adsorption mechanisms and the extent of adsorption of arsenic ions [15][16][17]. Additionally, other materials for arsenic adsorption such as resins or loaded iron (III) sponges have been found [18].…”

Section: Introductionmentioning

confidence: 99%

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Efficient arsenic(V) and arsenic(III) removal from acidic solutions with Novel Forager Sponge-loaded superparamagnetic iron oxide nanoparticles

Morillo

Pérez

Valiente

2015

Journal of Colloid and Interface Science

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Nowadays, there is a wide variety of arsenic decontamination processes being adsorption processes the most efficient. In this concern, superparamagnetic iron oxide nanoparticles (SPION) have been proposed as an appropriate system to improve arsenic adsorption from acidic wastewater. The number of mines, the amount of ore processed, and thus the amount of mine (acid) wastewaters have been rapidly increased in recent decades. For this reason, arsenic removal from contaminated water is an important goal to accomplish environmental regulations. It is noteworthy that aggregation of these nanoparticles has been detected as the main difficulty, hindering the promising adsorption. In order to overcome this drawback, it is proposed a system to avoid aggregation based on nanoparticles dispersion into an appropriate supporting material. To this purpose, SPION have been fixed on a cellulosic sponge achieving a decrease of the aggregation state, an increase of the active centers, and consequently, arsenic adsorption increases. Experimental results report a lower aggregation of supported SPION over sponge than the observed in the non supported nanoparticles. At this point, a remarkable improvement in the sponge system adsorption capacity is observed in comparison with superparamagnetic nanoparticles in Post-print of: Morillo, D. et al. "Efficient arsenic(V) and arsenic (III) removal from acidic solutions with Novel Forager Sponge-Loaded Superparamagnetic Iron Oxide Nanoparticles" in Journal of Colloid and Interface Science, Vol. 453 (2015), p. 132. The final version is available at: DOI 10.1016/j.jcis.2015.04.048 2 suspension, reaching adsorption capacities about 2.1 mmol As/g SPION and 12.1 mmol As /g SPION for arsenite and arsenate, respectively at pH 3.8. Then, the developed system not only amends the aggregation problem but also keep their nanoproperties intact, making the system a suitable one for arsenic removal in acidic wastewater treatment. HIGHLIGHTS• Feasibility of using Forager Sponge-loaded SPION for arsenic removal.• Adsorption pH is the main parameter controlling the As(V) and As(III) removal.• SPION incorporation to Forager Sponge avoids the nanoparticles leaching.• Adsorption capacity for both arsenic species is higher than reported in literature.

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Arsenic in the marine and aquatic environments: Analysis, occurrence, and significance

Cited by 170 publications

References 74 publications

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Arsenate removal with 3-mercaptopropanoic acid-coated superparamagnetic iron oxide nanoparticles

Occurrence of arsenic in plaice (Pleuronectes platessa), nature of organo-arsenic compound present and its excretion by man.

Efficient arsenic(V) and arsenic(III) removal from acidic solutions with Novel Forager Sponge-loaded superparamagnetic iron oxide nanoparticles

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