Arsenic (V) removal from aqueous solutions using natural clay ceramic monoliths

García-Carvajal, C.; Villarroel-Rocha, Jhonny; Curvale, Daniela Alejandra; and, María Martha Barroso Quiroga; Sapag, Karim

doi:10.1080/00986445.2018.1564910

Cited by 25 publications

(15 citation statements)

References 23 publications

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“…Various studies have revealed that both natural and modified clays have good to excellent performances for toxic heavy metals and concisely As adsorption in water treatments (García-Carvajal, C., Villarroel-Rocha, J., Curvale, D., Barroso-Quiroga, M. M., Sapag, 2019;Hua, 2015).…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Bentonite-composite polyvinyl alcohol/alginate hydrogel beads: Preparation, characterization and their use as arsenic removal devices

Baigorria

Cano

Sánchez

et al. 2020

Environmental Nanotechnology, Monitoring & Management

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Composite hydrogel beads based on PVA, sodium alginate and bentonite were prepared by ionic gelation. The resulting beads were tested for arsenic removal from waste water.  Wet beads were highly porous and spherical. The incorporation of bentonite produced a reduction on the swelling degree and an increase of gel fraction of the beads. The clay inclusion plays a key role in the As removal.

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Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Bentonite-composite polyvinyl alcohol/alginate hydrogel beads: Preparation, characterization and their use as arsenic removal devices

Baigorria

Cano

Sánchez

et al. 2020

Environmental Nanotechnology, Monitoring & Management

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“…According to the WHO, the daily requirement for safe water is 20 L per person [10,18]. In this respect, different methodssuch as coagulation, flocculation, sedimentation, filtration, inverse osmosis, ion exchange, and sorption techniqueshave been used to decrease or eliminate As in aqueous systems [2,5,7,8,18]. Table 1 summarizes some of the advantages and disadvantages of each technique.…”

Section: Arsenic Removalmentioning

confidence: 99%

“…Most techniques are more efficient when the initial arsenic concentration is high (>100 mg/L). However, these methodologies fail to reduce the amount of As present in water to the permitted limits, leaving harmful residual concentrations of arsenic [2,7,8,18]. Adsorption techniques are considered more efficient for removal of low arsenic concentrations in aqueous systems [2,7,8].…”

Section: Arsenic Removalmentioning

confidence: 99%

“…Arsenic removal methodologies are principally aimed at decontamination of water resources for intake [4][5][6]. Several techniques are used to reduce or eliminate As from aqueous systems [2,5,7,8]. The most commonly used ones are displayed in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The term "adsorption" means physical binding or adherence of molecules and ions to the surface of a solid material. Adsorption is an available, economical, and extensively studied process with good results and allows use of inexpensive raw materials, such as natural clays [8,9]. Furthermore, this kind of methodology is very useful in developing regions because it is easy to perform, has potential for regeneration, and generates little toxic sludge [9].…”

Section: Introductionmentioning

confidence: 99%

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Nanoclays as Eco-friendly Adsorbents of Arsenic for Water Purification

Baigorria

Cano

Álvarez

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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The presence of arsenic (As) in water intended for human consumption and wastewater represents a high level of dangerousness for both human health and the environment. Partial or complete removal of this metalloid from water is an important objective for environmental remediation in many parts of the world. Generally, As is present as As(III) and As(V) in water; the As(III) species is more harmful to humans.The use of original and modified nanoclays is a promising new technology for elimination of all traces of As by adsorption. Nanoclays display important characteristics that make them a viable methodological alternative for adsorption of polluting metals. They are abundant in nature and inexpensive, have high biocompatibility, and can be reused. Strategic functionalization of nanoclays allows optimization of the process of absorption of some polluting metals because

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