Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay

Hojman, Jonatan Y.; Meichtry, Jorge M.; Litter, Marta I.; Coll, Cristina Silvia Pérez

doi:10.1016/j.ecoenv.2015.09.036

Cited by 9 publications

(5 citation statements)

References 36 publications

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“…The USEtox™ model has been selected as a characterisation model and principle of USEtox™ model and accounting for nano-specific descriptors a CF for the toxic impact of freshwater ecotoxicity of 0.28 PAF day m3 kg− 1 is proposed. Hojman et al, (2015) monitored changes in toxicity on Rhinella arenarum larvae for 10-d after exposure to an untreated Cr (VI) solution and to the same solution after heterogeneous photocatalysis (HP) treatment.…”

Section: Wastewatermentioning

confidence: 99%

Effects of Pollution on Freshwater Organisms

Choudri

Baawain

2016

Water Environment Research

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This review includes works published in the general scientific literature during 2015 on the effects of anthropogenic pollutants on freshwater organisms. It begins with two broad sections: research reviews and broad field studies and surveys. This is followed by reviews of research categorized in sections to reflect the pollutant class. These sections include wastewater, stormwater and non-point source pollution, nutrients, sediment cap materials and suspended clays, botanical extracts, surfactants, metals, persistent organic pollutants, pharmaceuticals, endocrine disruptors, pesticides, petroleum hydrocarbons and polycyclic aromatic hydrocarbons (PAHs), ionic liquids, and nanomaterials. The final section includes works describing innovations in the field of freshwater pollution research.

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Section: Wastewatermentioning

confidence: 99%

Effects of Pollution on Freshwater Organisms

Choudri

Baawain

2016

Water Environment Research

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“…Heavy metals can be found in the environment as a result of several anthropogenic activities. Among these, chromium (Cr) is one of the most concerning pollutants due to its effects to the environment and human health. , Indeed, reports found in bibliography indicated the presence of chromium in natural water bodies, industrial sludge, and soils. − Once the chromium enters an aquatic system, it can be bioaccumulated and biomagnification might occur through the food chain, causing systematic damages to the environment and biota and aggravating even more the problem of access to drinking water that faces 60% of the world population. Hence, it is imperative to develop high-performance and low-cost Cr(VI) treatment techniques …”

Section: Introductionmentioning

confidence: 99%

One-Pot Green-Synthesis of Supported Reductive Biogenic Iron-Based Materials for the Removal of Cr(VI)

Paronetto,

Olivelli,

Montes

et al. 2024

Ind. Eng. Chem. Res.

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Development of environmentally friendly materials for efficient pollutant removal is crucial. In this work, a new one-pot green-synthesis of iron-based materials with a reductive/adsorption potential was developed and tested for remediation of Cr(VI) in water. Biogenic iron particles (BioFe) and BioFe supported on raw montmorillonite (BioFe-MMT) were synthesized using a ferric reducing bacteria consortium (FRB), and their structures were extensively characterized by Mössbauer spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Moreover, the microbial community in the consortium was assessed. Results indicated that BioFe-based materials presented dispersed cubic baricite microparticles containing Fe(II) and Ca2+ in their structure, making them ideal for Cr(VI) remediation. The removal efficiency of Cr(VI) from water by a combination of reduction and adsorption processes using the synthesized materials was evaluated through kinetics experiments. The removal of total chromium was more efficient using supported BioFe than using unsupported BioFe and no dependence with dissolved O2 was detected. The preparation of iron particles with excellent chromium removal performance by a new biobased synthesis could lead to a low-cost and environmentally friendly remediation technology.

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“…Previously, we have demonstrated the usefulness of the AMPHITOX test for monitoring the toxicity changes after the application of highly efficient technologies for the removal of difficult contaminants. In that case, TiO 2 -heterogeneous photocatalysis was used to drastically decrease Cr(VI) concentrations from aqueous systems, and AMPHITOX represented an optimal test to detect the abatement of the heavy metal during the application of this innovative methodology (Hojman et al, 2015).…”

Section: Introductionmentioning

confidence: 99%