Critical evaluation of the use of different nanoscale zero-valent iron particles for the treatment of effluent water from a small biological wastewater treatment plant

Oprčkal, Primož; Mladenovič, Ana; Vidmar, Janja; Pranjić, Alenka Mauko; Milačić, Radmila; Ščančar, Janez

doi:10.1016/j.cej.2017.03.104

Cited by 58 publications

(22 citation statements)

References 40 publications

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“…Whilst, when the iron is in excess, the inactivation of bacteria occurs due to the formation and accumulation of hydroxyl radicals (Xu et al 2019 ). Another study indicated that superoxide (produced by aerobic organisms) could accelerate DNA damage by raising levels of free iron in cells indicating that control of iron balance and responses to oxidative stress are actively coordinated by cells (Oprčkal et al 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Bacteriostatic impact of nanoscale zero-valent iron against pathogenic bacteria in the municipal wastewater

2021

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Graphical abstract Nanoscale zero-valent iron particles were investigated as an antibacterial agent against two Gram-positive bacteria; Staphylococcus aureus NRRL B-313 ( S. aureus ), Bacillus subtilus NRC ( B. subtilus ), and two Gram-negative bacteria; Escherichia coli NRC B-3703 ( E. coli ), Pseudomonas aeruginosa NRC B-32 ( Ps. aeruginosa ). The characterization of synthesized nZVI particles was obtained by XRD, SEM, EDX, and TG analyses. The results demonstrated that the nZVI particles have a spherical shape, mean crystalline size of 44.43 nm, and exhibited a good chemical and thermal stability performance under different physical conditions. The bacterial suspensions were subjected to the treatment using nZVI particle suspensions with a concentration of 10 mg/mL. The minimum inhibitory concentration of nZVI particles was determined using the well diffusion assay method and found to be 15, 10, 10, and 5 mg for the following four strains; S. aureus , B. subtilus , E. coli , and Ps. aeruginosa , respectively. The biological treatment results of municipal wastewater using nZVI particles revealed that the counts of total bacteria, total coliform, fecal coliform, S. aureus , fecal Streptococcus , and E. coli were decreased to 44.29%, 51.76%, 90.95%, 46.67%, 33.33%, and 93.89%, respectively, while the Ps. aeruginosa not detected in the wastewater sample. The enhanced inactivation performance of nZVI nanoparticles was mainly attributed to the reactive oxygen species (ROS) production, releasing of iron corrosion products like Fe 2+ /Fe 3+ ions, and direct friction of nZVI particles with bacterial cells membranes. In addition, the nZVI particles presented a striking disinfection behavior in comparison with other widespread disinfection technologies such as chlorination. Accordingly, the obtained results introduce the nZVI particles as a promising disinfection technology.

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Section: Introductionmentioning

confidence: 99%

Bacteriostatic impact of nanoscale zero-valent iron against pathogenic bacteria in the municipal wastewater

2021

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“…Therefore, it is essential to make appropriate use of current technologies for wastewater treatment, as well as developing new methods and guidelines for reusing wastewater streams. The candidate methods should meet some requirements such as being robust and available at low cost, and offering a short processing time and minimal impact on the environment (Dey et al 2017;Oprčkal et al 2017;Nelson et al 2017;Al-Obaidi et al 2017;Hassanzadeh et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Biotransformation of phenol in synthetic wastewater using the functionalized magnetic nano-biocatalyst particles carrying tyrosinase

et al. 2018

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Low conversion efficiency and long-processing time are some of the major problems associated with the use of biocatalysts in industrial processes. In this study, modified magnetic iron oxide nanoparticles bearing tyrosinase (tyrosinase-MNPs) were employed as a magnetic nano-biocatalyst to treat phenol-containing wastewater. Different factors affecting the phenol removal efficiency of the fabricated nano-biocatalyst such as catalyst dosage, pH, temperature, initial phenol concentration, and reusability were investigated. The results proved that the precise dosage of nano-biocatalyst was able to degrade phenol at the wide range of pHs and temperatures. The immobilized tyrosinase showed proper phenol degradation more than 70%, where the substrate with a high concentration of 2500 mg/L was subjected to phenol removal. The nano-biocatalyst was highly efficient and reusable, since it displayed phenol degradation yields of 100% after the third reuse cycle and about 58% after the seventh cycle. Moreover, the immobilized tyrosinase was able to degrade phenol dissolved in real water samples up to 78% after incubation for 60 min. It was also reusable at least seven cycles in the real water sample. The results proved the effectiveness and applicability of the fabricated nano-biocatalyst to treat phenol-containing wastewaters in a shorter time and higher efficiency even at high phenol concentration. The developed nano-biocatalyst can be promising for the micropollutants removal and an alternative for the catalysts used in traditional treatment processes.

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“…A number of researchers have used a variety of adsorbents to remove heavy metal ions from aqueous solutions such as activated carbon, bentonites, zeolites, iron oxides, clays etc. (Akperov & Maharramov 2010, Alic & Manea 2013, Bratkova & Angelov 2013, Erust & Sahin 2014, Mas Haris & Abdul Wahab 2011, Oprčkal & Mladenovič 2017, Hu & Wang 2011. Research on the radioactive pollutants removal from the wastewater by adsorption processes using nano-iron or nano-iron impregnated solid support, gain a more general interest.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Iron Particles for Wastewater Decontamination

Panturu¹,

Resources-ICPMRR²,

Panturu³

et al. 2018

Simi 2018

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This paper described the equilibrium and the kinetic of uranium adsorption from waste water using activated carbon without/with nano-iron impregnated, applying batch method. Adsorption isotherms of uranium equilibrium are analysed with Freundlich isotherms which reveal high affinity to activated carbon impregnated with nano-iron compared to nonimpregnate. Kinetic study showed that the decisive step of the uranium adsorption process rate is the intraparticle diffusion.

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Critical evaluation of the use of different nanoscale zero-valent iron particles for the treatment of effluent water from a small biological wastewater treatment plant

Cited by 58 publications

References 40 publications

Bacteriostatic impact of nanoscale zero-valent iron against pathogenic bacteria in the municipal wastewater

Bacteriostatic impact of nanoscale zero-valent iron against pathogenic bacteria in the municipal wastewater

Biotransformation of phenol in synthetic wastewater using the functionalized magnetic nano-biocatalyst particles carrying tyrosinase

Nanoscale Iron Particles for Wastewater Decontamination

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