Statistical Analysis of Raw and Potable Water Quality from a Preparation Plant, as a Basis to Purpose the Re-schedule of the Physico-Chemical Current Routine Analysis Periodicity

Cozma, Danut Gabriel; Costuleanu, Carmen Luiza; Sandu, Ion; Lutic, Doina

doi:10.37358/rc.18.1.6076

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…Water purification in modern societies has become a critical need. In general, water purification consists of complex physicochemical processes such as coagulation and flocculation into an insoluble phase, sedimentation, several filtration steps, and disinfection [10][11][12]. Several types of disinfection exist, such as the use of chlorine, ozone, or UV radiation.…”

Section: Introductionmentioning

confidence: 99%

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Ishchenko¹,

Rogé²,

Lamblin³

et al. 2021

Comptes Rendus. Chimie

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Section: Introductionmentioning

confidence: 99%

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Ishchenko¹,

Rogé²,

Lamblin³

et al. 2021

Comptes Rendus. Chimie

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“…A challenge for the 21st century is the control of technological processes in all industries to develop atom-economical and environmental friendly processes without by-products [8][9][10][11][12][13]. In this context, excellent comparative studies for several catalysts have been performed to improve catalytic performance in catalytic removal of CH4, NOx, COx, VOCs from flue gases [14][15][16][17][18][19][20][21][22]. VOCs are known as organic compounds with a low boiling point (≤ 250°C) at atmospheric pressure, according to the European Union (EU) [23].…”

Section: Introductionmentioning

confidence: 99%

Chemical Vapour Deposition (CVD) Technique for Abatement of Volatile Organic Compounds (VOCs)

Stoian¹,

Lazar²,

Uny³

et al. 2020

Rev. Chim.

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Chemical vapour deposition (CVD) is an important technique that uses volatile precursors to produce thin film deposits on an exposed substrate, having the capability to generate different types of nanostructures (e.g. nanoparticles, nanotubes, nanofibers or nanocomposites) as catalytic materials. The environmental hazard of volatile organic compounds (VOCs) requires efficient methods to reduce their emission into the atmosphere, due to their high potential to cause severe health issues, along with their extended spread in the environment. Catalytic combustion proves to be one of the most effective means for the abatement of VOCs, employing different catalysts, such as noble metals or non-noble metal oxides, to facilitate the oxidation process of the pollutants. These catalysts can be prepared through various methods as multiple steps wet processes or CVD techniques, indicating the superiority of the CVD-prepared catalysts compared to those prepared using the former type of process, due to the ability to achieve high dispersion of the active material, together with enhanced textural and morphological properties. This paper aims to present the various CVD techniques employed in the fabrication of different catalysts with the possibility of generating materials at nano-scale for use in numerous reactions, mostly in combustion process for VOCs decomposition.

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“…In this context, there is a high interest to develop performant materials for the adsorption and/or (photo)catalytic transformation of low concentrations of harmful and stable compounds from wastewaters [3]. Layered double hydroxides (LDHs) are a class of anionic clays that are emerging as suitable candidate for cleaning the water due to their performant adsorbent and catalytic or photocatalytic properties [4][5][6][7][8][9][10]. Their cost-effective synthesis methods, using "green" precursors, are another reason for the interest of the scientific community as well as that of companies specialized in adsorbents and catalysts manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Zinc-Iron-Aluminum Layered Double Hydroxides with Controlled Micromorphology in a Tailored Aqueous - Organic Synthesis Medium

Stanciulescu¹,

Cârjă²,

Lutic³

2020

Rev. Chim.

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Micromorphology characteristics of layered double hydroxides are important to establish their performances to act as adsorbents and catalysts/photocatalysts. Herein, we report the fabrication of ZnFeAl layered double hydroxides (LDHs) (defined by a molar ratios Zn/Fe/Al 2/0.5/0.5), in a tailored aqueous-organic synthesis medium, by using the coprecipitation method. The nature of the organic solvent (e.g.: ethanol, ethyl acetate, glycerol and toluene) was used as a controlled variable for obtaining specific morphology characteristics of ZnFeAl. XRD, FTIR, UV-Vis-DR spectroscopy and SEM microscopy have been used to characterize the structural, optical and textural features of ZnFeAl. Results show that the controlled aqueous-organic synthesis medium established important changes in the structural features and the micromorphology characteristics (e.g.: particle sizes and their interconnection patterns) of ZnFeAl, as indicated by the results of XRD and SEM analyses. The FTIR spectra revealed that most of the interlayer anions are carbonate, even though the initial salts precursors contain nitrates or sulfates anions. Furthermore, the UV-Vis-DR results underline that the band gaps of the LDH derived oxides changed in a significant manner, as a function of the nature of the organic solvent. Such that, ZnFeAl prepared in the presence of ethanol and ethyl acetate show band gap values lower than 3 eV and thus could be better activated under visible light. These results should be inspiring for fabricating layered double hydroxides with a controlled micromorphology for specific applications for environmental cleanup.

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Statistical Analysis of Raw and Potable Water Quality from a Preparation Plant, as a Basis to Purpose the Re-schedule of the Physico-Chemical Current Routine Analysis Periodicity

Cited by 5 publications

References 24 publications

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

TiO 2 , ZnO, and SnO 2 -based metal oxides for photocatalytic applications: principles and development

Chemical Vapour Deposition (CVD) Technique for Abatement of Volatile Organic Compounds (VOCs)

Fabrication of Zinc-Iron-Aluminum Layered Double Hydroxides with Controlled Micromorphology in a Tailored Aqueous - Organic Synthesis Medium

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