Bio-derived MgO nanopowders for BOD and COD reduction from tannery wastewater

Oladipo, Akeem Adeyemi; Adeleye, Olatunji Jacob; Oladipo, Adewale Sulaiman; Aleshinloye, Abimbola O.

doi:10.1016/j.jwpe.2017.01.003

Cited by 62 publications

(28 citation statements)

References 28 publications

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“…The high BOD values may be due to the presence of considerable amounts of organic matter that removed from the skin during the pre-tanning process. Although the BOD value after treatment was still high as compared to permissible disposal limits set by SSMO [47], however, similar results have been reported by the use of the MgO nanoparticles [50]. In contrast to the traditional methods, which most likely to use the photocatalytic property of the treatment agents, the CoFe 2 O 4 nanoparticles resulted in less removal efficiency.…”

Section: Biological Oxygen Demand (Bod)supporting

confidence: 55%

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

2020

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Cobalt-nanoferrite as a magnetic separable material has drawn the attention of researchers due to its unique properties, significant applications and high potentiality in wastewater treatment. In this study, the cobalt nanoferrite was synthesized by chemical co-precipitation method at different annealing temperatures and characterized by X-ray diffraction, scanning electronic microscopy, energy dispersive X-ray, Fourier transform infrared spectroscopy and UV-visible spectroscopy. Then the synthesized nanoferrite was assessed and used for the treatment of tannery wastewater. The characterizations confirmed the formation of nanoferrites with size between 15 and 23 nm. The average particle size increased with increase of annealing temperatures. Typical values for tannery wastewater treatment efficiency for chromium, total dissolved solids, biochemical oxygen demand and chemical oxygen demand were 23.75, 90.83, 52.72 and 48.07% respectively. Thus, the treatment by nanoferrites appears a promising and effective method for the removal of contaminants.

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Section: Biological Oxygen Demand (Bod)supporting

confidence: 55%

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

2020

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“…Thereafter, the substance was washed with deionized water by centrifugation at 5,000 rpm for 10 min at least three times in order to remove the remaining impurities. Finally, the obtained precipitate was dried at 100 • C and calcinated at 400 • C to produce nMgO (Oladipo et al, 2017). The shape of nMgO was determined using TEM/HRTEM performed on a PEI Tecnai G2 F30 field emission instrument with an accelerating voltage of 300 kV.…”

Section: Characterization Of Mgo Nanoparticlesmentioning

confidence: 99%

Comparative Study on the Fungicidal Activity of Metallic MgO Nanoparticles and Macroscale MgO Against Soilborne Fungal Phytopathogens

Chen

et al. 2020

Front. Microbiol.

115

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Engineered nanoparticles have provided a basis for innovative agricultural applications, specifically in plant disease management. In this interdisciplinary study, by conducting comparison studies using macroscale magnesium oxide (mMgO), we evaluated the fungicidal activity of MgO nanoparticles (nMgO) against soilborne Phytophthora nicotianae and Thielaviopsis basicola for the first time under laboratory and greenhouse conditions. In vitro studies revealed that nMgO could inhibit fungal growth and spore germination and impede sporangium development more efficiently than could macroscale equivalents. Indispensably, direct contact interactions between nanoparticles and fungal cells or nanoparticle adsorption thereof were found, subsequently provoking cell morphological changes by scanning electron microscopy/energy-dispersive spectrometry (SEM/EDS) and transmission electron microscopy (TEM). In addition, the disturbance of the zeta potential and accumulation of various modes of oxidative stress in nMgO-exposed fungal cells accounted for the underlying antifungal mechanism. In the greenhouse, approximately 36.58 and 42.35% decreases in tobacco black shank and black root rot disease, respectively, could testify to the efficiency by which 500 µg/ml of nMgO suppressed fungal invasion through root irrigation (the final control efficiency reached 50.20 and 62.10%, respectively) when compared with that of untreated controls or mMgO. This study will extend our understanding of nanoparticles potentially being adopted as an effective strategy for preventing diversified fungal infections in agricultural fields.

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“…The fast adsorption rate at the initial period was due to a high driving force in the solid/liquid phase, leading to the fast removal of the TOC by the FMWCNTs adsorbent [51]. The slow adsorption rate noted with time as the reaction progressed may be attributed to the saturation of the external surface of the FMWCNTs nano-adsorbent by the TOC which resulted in diffusion of the TOC into the pore and binded by the internal surface of the nano-adsorbent [56].…”

Section: Effect Of Contact Time Solution Temperature and Adsorbent Dmentioning

confidence: 99%

Optimization of the adsorption of total organic carbon from produced water using functionalized multi-walled carbon nanotubes

Adewoye

Ogunleye

Abdulkareem

et al. 2021

Heliyon

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Bio-derived MgO nanopowders for BOD and COD reduction from tannery wastewater

Cited by 62 publications

References 28 publications

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

Comparative Study on the Fungicidal Activity of Metallic MgO Nanoparticles and Macroscale MgO Against Soilborne Fungal Phytopathogens

Optimization of the adsorption of total organic carbon from produced water using functionalized multi-walled carbon nanotubes

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