Organic matter decomposition before arsenic speciation analysis of water sample – “Soft decomposition” using nano-photocatalysts

Biaduń, Ewa; Nowak, Natalia; Kowalska, Joanna; Miecznikowski, Krzysztof; Krasnodębska‐Ostręga, Beata

doi:10.1016/j.chemosphere.2018.05.085

Cited by 7 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is important to note that, for Fe/W/Fe samples, photodegradation of the surfactants was performed at a higher pH (pH = 5) in comparison to previous samples. The results are promising in the context of speciation analysis [61]. In each sample, the coefficient of correlation was close to 100%, and the relative standard deviation of the triple measurements did not exceed 1%, which was fully predictable.…”

Section: Photodegradation Without Application Of Potential Differencementioning

confidence: 56%

Application of Hierarchical Nanostructured WO3 and Fe2O3 Composites for Photodegradation of Surfactants in Water Samples

et al. 2019

Self Cite

View full text Add to dashboard Cite

This study describes the utilization of hierarchical photoactive surface films for the decomposition of surfactants in water samples (with different pH). Photoactive films, containing tungsten (VI) oxide and iron (III) oxide (hematite), were deposited in a systematic and controlled manner using a layer-by-layer method. Physicochemical properties of the photoactive materials were developed and characterized using XRD analysis, Raman spectroscopy, water contact angle, voltammetry, and microscopic (SEM) techniques. The resulting multilayer films showed attractive performances in the photodegradation of the anionic surfactant sodium dodecyl sulfate (SDS) and the nonionic surfactant (1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol (Triton™ X-144) under solar light irradiation. The efficiency of the surfactants’ photodegradation was evaluated with a “test” based on a method, which is extremely sensitive to surfactants’ interference, with trace analysis of Pb using anodic stripping voltammetry on mercury electrodes (recovery study). The usefulness of hierarchical photoactive systems in the photodegradation of both surfactants is demonstrated in the presence and absence of the applied bias voltage. The maximum decomposition times were 2–3 h and 30 min, respectively. Furthermore, a properly designed layer system may be proposed, matching the pH of the water sample (depending on the treatment on the sampling side).

show abstract

Section: Photodegradation Without Application Of Potential Differencementioning

confidence: 56%

Application of Hierarchical Nanostructured WO3 and Fe2O3 Composites for Photodegradation of Surfactants in Water Samples

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Photocatalysts are categorized into two classifications: hetero-and homogeneous procedures [19]. When comparing the two processes, the heterogeneous procedure is, in fact, a feasible strategy that can be exploited to reduce a variety of wastewater pollutions, and which has some benefits over other competing methods [20]. This procedure does not suffer from waste disposal problems, but offers complete mineralization and low cost, with the only requirement being mild pressure and temperature conditions.…”

Section: Fundamentals and Mechanism Of Photocatalytic Reactionsmentioning

confidence: 99%

Biomedical Waste Management by Using Nanophotocatalysts: The Need for New Options

et al. 2020

View full text Add to dashboard Cite

Biomedical waste management is getting significant consideration among treatment technologies, since insufficient management can cause danger to medicinal service specialists, patients, and their environmental conditions. The improvement of waste administration protocols, plans, and policies are surveyed, despite setting up training programs on legitimate waste administration for all healthcare service staff. Most biomedical waste substances do not degrade in the environment, and may also not be thoroughly removed through treatment processes. Therefore, the long-lasting persistence of biomedical waste can effectively have adverse impact on wildlife and human beings, as well. Hence, photocatalysis is gaining increasing attention for eradication of pollutants and for improving the safety and clearness of the environment due to its great potential as a green and eco-friendly process. In this regard, nanostructured photocatalysts, in contrast to their regular counterparts, exhibit significant attributes such as non-toxicity, low cost and higher absorption efficiency in a wider range of the solar spectrum, making them the best candidate to employ for photodegradation. Due to these unique properties of nanophotocatalysts for biomedical waste management, we aim to critically evaluate various aspects of these materials in the present review and highlight their importance in healthcare service settings.

show abstract

“…Photocatalytic oxidation technology is divided into homogeneous photocatalysis and non-homogeneous photocatalysis. Homogeneous photocatalysis has been applied in the treatment of organic arsenic pollutants no matter in the pretreatment of organic arsenic in seawater samples (Castro et al, 2007), the monitoring of the chemical form of organic arsenic in the aquatic environment (Biadu n et al, 2018), or the advanced oxidation process of arsine pollutants at UV/S 2 O 8 2À , UV/H 2 O 2 , and UV/O 3 (Czaplicka et al, 2014;Yoon et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Progress of photocatalytic oxidation–adsorption synergistic removal of organic arsenic in water

Ablat,

Nurmamat,

Tian

et al. 2024

Water Environment Research

View full text Add to dashboard Cite

Photocatalytic oxidation–adsorption synergistic treatment of organic arsenic pollutants is a promising wastewater treatment technology, which not only degrades organic arsenic pollutants by photocatalytic degradation but also removes the generated inorganic arsenic by adsorption. This paper compares the results of photocatalytic oxidation–adsorption co‐treatment of organic arsenic pollutants such as monomethylarsonic acid, dimethylarsinic acid, phenylarsonic acid, p‐arsanilic acid, and 3‐nitro‐4‐hydroxyphenylarsonic acid on titanium dioxide, goethite, zinc oxide, and copper oxide. It examines the influence of the morphology of organic arsenic molecules, pH, coexisting ions, and the role of natural organic matter. The photocatalytic oxidation–adsorption co‐treatment mechanism is investigated, comparing the hydroxyl radical oxidation mechanism, the hydroxyl radical and superoxide anion radical cooxidation mechanism, and the hydroxyl radical and hole cooxidation mechanism. Finally, the future prospects of metal oxide photocatalytic materials and the development of robust and efficient technologies for removing organic arsenic are envisioned.

show abstract

Organic matter decomposition before arsenic speciation analysis of water sample – “Soft decomposition” using nano-photocatalysts

Cited by 7 publications

References 33 publications

Application of Hierarchical Nanostructured WO3 and Fe2O3 Composites for Photodegradation of Surfactants in Water Samples

Application of Hierarchical Nanostructured WO3 and Fe2O3 Composites for Photodegradation of Surfactants in Water Samples

Biomedical Waste Management by Using Nanophotocatalysts: The Need for New Options

Progress of photocatalytic oxidation–adsorption synergistic removal of organic arsenic in water

Contact Info

Product

Resources

About