Multifunctional ZnFeO-based composite from iron sludge for photocatalytic degradation of azo, thiazine, anthraquinone dyes, formaldehyde and oil sorption from aqueous media

IF 6.7 2区 工程技术 Q1 ENGINEERING, CHEMICAL
Valentin Romanovski , Dmitry Kulichik , Rajiv Periakaruppan , Vanathi Palanimuthu , Natallia V. Kulinich , Vadim Popkov , Alexandr Dubina , Iryna V. Matsukevich , Vladimir Shtepa , Elena Romanovskaia
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Abstract

This paper presents the results of the study of iron‑zinc containing photocatalysts ZnFeO-NPs obtained from sediments of groundwater deironing stations by the exothermic combustion method. Three different reducing agents were examined. X-ray phase analysis showed the presence of a predominant phase ZnFe2O4 (32.7–43.5 %) in all samples, as well as a significant content of magnetite (35.0–41.4 %), which confirms incomplete oxidation of iron during the synthesis, which correlates with thermodynamic calculations. The study of morphology revealed aggregated structures with a particle size of >20 nm. The photocatalytic activity of the studied materials was analyzed using the example of the destruction of four dyes of different nature and formaldehyde. The best ZnFeO-U sample showed 98.7 % purification efficiency at a dose of 3000 mg/L for 45 min, which was 7.2 % higher than the control sample synthesized from pure reagents. Oil absorption capacity tests demonstrated that ZnFeO-G has the highest sorption capacity (5.598 g/g), increasing by 33 % after 5 regeneration cycles. Contact angle analysis revealed dual wettability, with ZnFeO-G being most oleophilic. Antibacterial studies revealed suppression of Pseudomonas aeruginosa growth (inhibition zone 19 ± 2 mm) at a concentration of 25 μg/mL, approaching the efficiency of a standard antibiotic (22 ± 0.1 mm). The obtained ZnFeO-containing nanomaterials have multifunctional properties and are promising for use in the field of wastewater treatment and oil pollution removal.
铁泥多功能zno - feo基复合材料光催化降解偶氮、噻嗪、蒽醌染料、甲醛和水介质吸油
本文介绍了用放热燃烧法从地下水脱烫站沉积物中制备含铁锌光催化剂ZnFeO-NPs的研究结果。考察了三种不同的还原剂。x射线物相分析表明,所有样品中均存在优势相ZnFe2O4(32.7 ~ 43.5%),磁铁矿含量显著(35.0 ~ 41.4%),证实了铁在合成过程中氧化不完全,这与热力学计算相一致。形貌研究显示颗粒大小为20 nm的聚集结构。以四种不同性质的染料和甲醛的破坏为例,分析了所研究材料的光催化活性。ZnFeO-U样品在浓度为3000 mg/L的条件下纯化45 min,纯化效率为98.7%,比用纯试剂合成的对照样品高7.2%。吸油量试验表明,ZnFeO-G的吸油量最高,达到5.598 g/g,再生5次后吸油量提高33%。接触角分析显示双润湿性,其中ZnFeO-G最亲油。抑菌实验表明,25 μg/mL对铜绿假单胞菌生长的抑制作用(抑制带19±2 mm)接近标准抗生素(抑制带22±0.1 mm)。制备的含氧化锌纳米材料具有多种功能,在污水处理和除油等领域具有广阔的应用前景。
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来源期刊
Journal of water process engineering
Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
10.70
自引率
8.60%
发文量
846
审稿时长
24 days
期刊介绍: The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies
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