Surface induced growth of ZIF-67 at Co-layered double hydroxide: Removal of methylene blue and methyl orange from water

Nazir, Mamona; Khan, Naseem; Cheng, Chao; Shah, Syed Shoaib Ahmad; Najam, Tayyaba; Arshad, Muhammad; Sharif, Ahsan; Akhtar, Shahnaz; Rehman, Aziz ur

doi:10.1016/j.clay.2020.105564

Cited by 153 publications

(54 citation statements)

References 53 publications

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“…These inputs come from agricultural activities such as intensive application of nitrogen fertilizers (Haddad et al 2013;Rahmati et al 2015) and pesticides leading to their seepage into soil and groundwater (Menció et al 2016;Haddad et al 2017;Gutiérrez et al 2018). Nonagricultural sources such as animal waste from the farming industry (Brindha and Elango 2014), discharge of industrial and domestic effluents (Nazir et al 2020), and agricultural runoffs also cause nitrate pollution especially in surface waters (Paredes et al 2020). High levels are toxic to both aquatic life and humans and may lead to conditions including methemoglobinemia, respiratory problems, tumors, abortions, birth defects, and nitrate poisoning in animals (Stadler et al 2012;Peng et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Heterotrophic aerobic denitrification by novel bacterium Georgenia daeguensis ARB2 for treatment of nitrate contaminated waters

Rajta

Setia

Shukla

et al. 2021

Int. J. Environ. Sci. Technol.

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Denitrification is a potential strategy for nitrate removal from wastewater. This study reports the isolation of a novel bacterium Georgenia daeguensis ARB2 which has not been earlier reported for treatment of wastewater. ARB2 was isolated from pharmaceutical wastewater and optimized for growth and nitrate removal under conditions of 10 mM nitrate stress (140 mgL −1 NO − 3 − N ). It can utilize nitrate as a sole source of nitrogen, exhibits highest growth and aerobic denitrification using glycogen + maltose as a carbon source at pH 7.0, carbon-to-nitrogen ratio of 34, temperature 30 °C, and shaking speed of 100 rpm. ARB2 removes 20% of the initial nitrate concentration of 10 mM in 56 h, and 40% of the initial nitrate concentration of 1 mM in 52 h. Further, the efficacy of strain ARB2 was tested on real contaminated waters and was found to successfully reduce nitrate levels in them. The findings suggest that Georgenia daeguensis ARB2 has a potential application for the alleviation of nitrate under aerobic conditions.

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Section: Introductionmentioning

confidence: 99%

Heterotrophic aerobic denitrification by novel bacterium Georgenia daeguensis ARB2 for treatment of nitrate contaminated waters

Rajta

Setia

Shukla

et al. 2021

Int. J. Environ. Sci. Technol.

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“…MB is a dye used in the coloring of paper, artificial hair, fabrics, etc., and it causes toxic effects on humans (Nazir et al, 2020), which prompted us to study the photocatalytic degradation of MB. In this degradation process, pure ZnO was used as photocatalyst by employing the typical absorbance of MB at 664 nm as a monitoring reference for monitoring this property of all the synthesized samples.…”

Section: Photocatalytic Degradation Of Mbmentioning

confidence: 99%

“…Synthesis and use of zinc oxide nanoparticles at such an elevated level also increase their exposure to humans and the environment (Singh et al, 2018;Alosman et al, 2021). Recently, investigators have analyzed the toxicity of zinc oxide nanoparticles toward mice; the mechanism of cytotoxicity includes the interaction of cells resulting in the production of reactive oxygen species (Pandurangan and Kim, 2015;Nazir et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Green Synthesis of Pure and Mn-Doped ZnO Nanocomposites: In Vitro Antibacterial Assay and Photodegradation of Methylene Blue

Khan

Nisar

2022

Front. Mater.

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This paper describes the eco-friendly microwave-assisted green synthesis of pure and manganese-doped zinc oxide nanocomposites using ethanolic solution of castor oil as a reductant and capping agent. Solutions of Zn2+ and Mn2+ ions were mixed in fixed ratios to obtain 0%, 1%, 2.5%, 5%, and 7% pure and Mn-doped ZnO nanomaterials. The obtained nanomaterials were characterized by powder XRD, FT-IR spectroscopy, scanning electron microscopy, and EDX analyses. Powder XRD furnished characteristic fragmentation patterns for the confirmation of the synthesized materials and was also used to estimate the size of the synthesized nanoparticles by Scherrer’s equation. Diffraction patterns were characteristic of wurtzite structure and of the size in the range of 6.5, 5.6, 5.2, 5.1, and 4.3 nm for pure and Mn-doped ZnO nanocomposites. UV-visible spectra displayed maximum absorbance at 340 nm, and manganese doping caused a red shift. FT-IR spectra confirmed that the formation of zinc oxide nanoparticles as Zn─O appeared at below 700 cm−1 as well as the presence of organic moieties of the castor oil acting as stabilizing agents. Scanning electron micrographs (SEM) revealed all the synthesized materials were spherical in shape with some aggregation and polydispersity, and in the Energy-dispersive X-ray spectroscopy (EDX), specific peaks with characteristic patterns were seen for Zn, O, and Mn. A TEM micrograph displayed the hexagonal wurtzite structure of nanoparticles with average size less than 50 nm. Photocatalytic degradation of methylene blue was checked in the presence of sunlight and in darkness. Interestingly, samples placed under the solar radiation exhibited significant results only with the catalyst; all the samples used without the catalyst showed negligible degradation effects, and even the samples placed in the dark containing catalysts also displayed a negative effect. A mechanism for this significant activity is also proposed. In vitro the antibacterial potential was studied against two pathogenic strains, i.e., Streptococcus aureus and Escherichia coli; interestingly activity kept on increasing with the increasing manganese content. Overall, all the samples presented comparable activity to ciprofloxacin.

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“…The adsorption method has the advantages of low cost, simple operation and wide application, so it has a good application prospect. 11 Nazir et al 12,13 prepared porous composite materials for adsorption studies on malachite green (MG) and methyl orange (MO) in water for many times. The results show that the porous composite has good adsorption effect on MG and MO, and its adsorption capacity is better than other single-phase materials.…”

Section: Introductionmentioning

confidence: 99%

Dynamic experiment on the treatment of acidic chromium-containing wastewater by lignite loaded nano FeS

Guo

Gao

et al. 2022

RSC Adv.

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Surface induced growth of ZIF-67 at Co-layered double hydroxide: Removal of methylene blue and methyl orange from water

Cited by 153 publications

References 53 publications

Heterotrophic aerobic denitrification by novel bacterium Georgenia daeguensis ARB2 for treatment of nitrate contaminated waters

Heterotrophic aerobic denitrification by novel bacterium Georgenia daeguensis ARB2 for treatment of nitrate contaminated waters

Microwave-Assisted Green Synthesis of Pure and Mn-Doped ZnO Nanocomposites: In Vitro Antibacterial Assay and Photodegradation of Methylene Blue

Dynamic experiment on the treatment of acidic chromium-containing wastewater by lignite loaded nano FeS

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