Arsenic removal from naturally contaminated waters: a review of methods combining chemical and biological treatments

Fazi, Stefano; Amalfitano, Stefano; Casentini, Barbara; Davolos, Domenico; Pietrangeli, Biancamaria; Crognale, Simona; Lotti, Francesca; Rossetti, Simona

doi:10.1007/s12210-015-0461-y

Cited by 49 publications

(17 citation statements)

References 54 publications

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“…For instance, commercially nano-sized magnetite (25-50 nm) may cost $500/kg while microbial processes are potentially capable of producing 5-90 nm pure or substituted magnetites at a fraction of the cost of traditional chemical synthesis (Moon et al, 2010). In the last decades, arsenic nano-and bioremediation has received significant attention due to its cost effectiveness and environmental compatibility [56][57][58].…”

Section: Discussionmentioning

confidence: 99%

Arsenate and arsenite removal from contaminated water by iron oxides nanoparticles formed inside a bacterial exopolysaccharide

Casentini

Gallo

Baldi

2019

Journal of Environmental Chemical Engineering

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In the last decades, the presence of high As levels in groundwaters poses a serious limitation to the use of this resources for drinking purposes in several parts of the world. Treatment of As-rich waters selected iron oxides filters as more effective, low cost and selective technology. Green and biologically-driven pathways to synthetize new nanostructured iron oxy-hydroxides are becoming always more attractive. We tested the suitability of FeOOH nanoparticles (9-15 nm) produced by Klebsiella oxytoca strain DSM 29614 and encapsulated in EPS gel structure to treat arsenic rich water. Different gel:water volume ratios were tested to treat 5000 μg As/L solution. 20% FeEPS solution was able to remove 95% of As(V) while in 5% solution removal was reduced to 60%. Arsenic adsorption was very fast and follows pseudo-2 nd order kinetic with maximum adsorption capacity reached at about 30 min. Adsorption followed Langmuir model for As(V) with q max = 31.8 mg As /g Fe and BET for As(III) with 8 mg As /g Fe for the first layer in 10% FeEPS solution. FeEPS dried into powder showed noticeable removal only after 2 h, hence not suitable for drinking water treatment. Treatment of natural As levels in mimicked groundwaters showed 87-95% As(V) and 45-61% As(III) removal after 5 min. FeEPS gel immobilized onto bivalve shell debris was used in packed-bed filters. It retained 49.8 mg As /g Fe from 150 μg/L As(V) spiked groundwater before reaching breakthrough at 8000 BVs. Biologically produced FeEPS gel showed good potentialities as eco-friendly material to remove As from contaminated groundwater.

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Section: Discussionmentioning

confidence: 99%

Arsenate and arsenite removal from contaminated water by iron oxides nanoparticles formed inside a bacterial exopolysaccharide

Casentini

Gallo

Baldi

2019

Journal of Environmental Chemical Engineering

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“…Overall, the identification and the exploitation of microbial metabolic potentialities for arsenic-contaminated water treatment are considered an emerging challenge as mirrored by an increasing number of recent studies ( Crognale et al, 2017 ). Among the available bacterial-driven processes, bioprecipitation, biosynthesis of adsorbent materials, biosorption and biovolatilization, involving several microorganisms ( Table 1 ), are the most interestingly described for bioremediation of arsenic-contaminated waters ( Fazi et al, 2016 ).…”

Section: Arsenic Bioremediation and ‘Omics’ Approaches: A Case Studymentioning

confidence: 99%

A Genomic Outlook on Bioremediation: The Case of Arsenic Removal

et al. 2018

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Microorganisms play a major role in biogeochemical cycles. As such they are attractive candidates for developing new or improving existing biotechnological applications, in order to deal with the accumulation and pollution of organic and inorganic compounds. Their ability to participate in bioremediation processes mainly depends on their capacity to metabolize toxic elements and catalyze reactions resulting in, for example, precipitation, biotransformation, dissolution, or sequestration. The contribution of genomics may be of prime importance to a thorough understanding of these metabolisms and the interactions of microorganisms with pollutants at the level of both single species and microbial communities. Such approaches should pave the way for the utilization of microorganisms to design new, efficient and environmentally sound remediation strategies, as exemplified by the case of arsenic contamination, which has been declared as a major risk for human health in various parts of the world.

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“…This method removes pollutants isolated from the liquid process, and the adsorbent may disperse pollutants after adsorption without any specific environmental hazard. [36][37][38] Although many adsorbents have been used for this purpose, the use of cost-effective, efficient, and multifunctional nanostructures is very important. [39] Activated carbon, [40] zeolites, [41] magnetite nanoparticles, [42] and carbon nanotubes [43] like adsorbent have been already used to remove arsenic.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a novel Zn‐MOF/PVA nanofibrous composite as bioorganic material: Design, systematic study and an efficient arsenic removal

Shahryari

Vahidipour

Chauhan³

et al. 2020

Polymer Engineering & Sci

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Metal organic framework (Zn-MOF)/polyvinyl alcohol (PVA) nanofibrous composite new material has been fabricated using electrospinning and is characterized by a variety of physicochemical analyses, including Fourier transmitting infrared spectroscopy, X-ray powder diffraction (XRD), scanning electron microscopy-energy dispersive spectroscopy, nitrogen adsorption surface, and thermo gravimetric-derivative of thermogravimetry. In this study, the effects of a systematic study including a fractional factorial design were studied for arsenic removal. The results showed that although conventional methods have a high level of arsenic removal, the fractional factor method results in a relatively high level of absorption of arsenic. This high level of arsenic removal allows the potential use of nano adsorbents in various environmental fields. The systematic study developed in this study can be used as a novel protocol to eradicate pollution from different areas, including water, air, and soil.

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Arsenic removal from naturally contaminated waters: a review of methods combining chemical and biological treatments

Cited by 49 publications

References 54 publications

Arsenate and arsenite removal from contaminated water by iron oxides nanoparticles formed inside a bacterial exopolysaccharide

Arsenate and arsenite removal from contaminated water by iron oxides nanoparticles formed inside a bacterial exopolysaccharide

A Genomic Outlook on Bioremediation: The Case of Arsenic Removal

Synthesis of a novel Zn‐MOF/PVA nanofibrous composite as bioorganic material: Design, systematic study and an efficient arsenic removal

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