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Institution

University of Johannesburg

EducationJohannesburg, South Africa
About: University of Johannesburg is a education organization based out in Johannesburg, South Africa. It is known for research contribution in the topics: Population & Tourism. The organization has 8070 authors who have published 22749 publications receiving 329408 citations. The organization is also known as: UJ.


Papers
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Journal ArticleDOI
TL;DR: In this article, a column type continuous flow operation was used to obtain the breakthrough curves and the degree of column utilization for dyes falls in range from 60 to 76% while for phenols was in the range 53-58%.
Abstract: Fertilizer plant waste carbon slurry has been investigated after some processing used as efficient adsorbent for the fast removal and rapid adsorption of dyes and phenols using columns. The results reveals that the adsorbent developed from carbon slurry is carbonaceous in nature and having appreciable surface area (380 m 2 /g) can remove dyes both cationic (meldola blue, methylene blue, chrysoidine G, crystal violet) as well as anionic (ethyl orange, metanil yellow, acid blue 113), and phenols (phenol, 2-chlorophenol, 4-chlorophenol and 2,4-dichlorophenol) fruitfully from water. The column type continuous flow operations were used to obtain the breakthrough curves. The breakthrough capacity, exhaustion capacity and degree of column utilization were optimized and evaluated from the plots. The results obtained revealed that the degree of column utilization for dyes falls in range from 60 to 76% while for phenols was in the range 53-58%. The exhaustion capacities were quite high as compared to the breakthrough capacities and were found to be 217, 211, 104, 126, 233, 248, 267 mg/g for meldola blue, crystal violet, chrysoidine G, methylene blue, ethyl orange, metanil yellow, acid blue 113, respectively and 25.6, 72.2, 82.2 and 197.3 mg/g for phenol, 2-chlorophenol, 4- chlorophenol and 2,4-dichlorophenol, respectively.

87 citations

Journal ArticleDOI
TL;DR: In this paper, nano silver particles with an average mean crystallite size of between 10 and 12 nm were synthesized from different molecular weights of poly(ethylene glycol) as stabilizing agents, through solid state oxidation of silver nitrate using a higher energy planetary ball mill.
Abstract: Nano silver particles with an average mean crystallite size of between 10 and 12 nm were synthesized from different molecular weights of poly(ethylene glycol) as a stabilizing agents, through solid state oxidation of silver nitrate using a higher energy planetary ball mill. Ultraviolet-Visible spectra were used to confirm the synthesis of nano silver particles. The surface plasmon resonance bands were observed around 410 nm. Fourier transformed infrared spectrum, X-ray diffraction, and transmission electronic microscopy techniques were used to characterize the nano silver particles synthesized. Thermal stability was determined using thermogravimetic analysis and the elemental composition of the sample was determined by energy dispersive X-ray analysis. The nano silver particles synthesized, exhibited very good antibacterial activity against Gram-positive bacteria (Bacillus) and Gram-negative bacteria (Pseudomonas aeruginosa). Based on the obtained results, it was additionally explored that the size and the stabilization of the nano silver particles synthesized, strongly depend on the molecular weight of poly(ethylene glycol). © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43027.

87 citations

Journal ArticleDOI
TL;DR: The different edible coatings applied to enhance storage of stone fruit are discussed, with a focus on coating formulation, properties and mode of action specific to stone fruit.

87 citations

Journal ArticleDOI
Morad Aaboud, Georges Aad1, Brad Abbott2, Ovsat Abdinov3  +2921 moreInstitutions (213)
TL;DR: This Letter documents a measurement of the first jet substructure quantity at a hadron collider to be calculated at next-to-next- to-leading-logarithm accuracy.
Abstract: Jet substructure observables have significantly extended the search program for physics beyond the standard model at the Large Hadron Collider. The state-of-the-art tools have been motivated by the ...

87 citations

Journal ArticleDOI
TL;DR: In this paper, an iron molybdophosphate (FeMoPO) nanoparticles have been fabricated using simple co-precipitation method and the nanoparticles showed promising ion exchange nature with ion exchange capacity of 1 −meq −g −1 The synthesis on nanoparticles has been ascertained by characterizing the material using various techniques including Fourier transform infrared spectroscopy (FTIR) scanning electron microscopy (SEM) and transmission electron microscope (TEM) to investigate the ion exchange behavior of FeMoPO nanoparticles its physicochemical properties

87 citations


Authors

Showing all 8414 results

NameH-indexPapersCitations
Vinod Kumar Gupta16571383484
Arnold B. Bakker135506103778
Trevor Vickey12887376664
Ketevi Assamagan12893477061
Diego Casadei12373369665
Michael R. Hamblin11789959533
E. Castaneda-Miranda11754556349
Xiaoming Li113193272445
Katharine Leney10845952547
M. Aurousseau10340344230
Mika Sillanpää96101944260
Sahal Yacoob8940825338
Evangelia Demerouti8523649228
Lehana Thabane8599436620
Sahal Yacoob8439935059
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023196
2022526
20213,152
20202,933
20192,706
20182,150