Thumbnail Image
 

Shandu, Jabulani

Faculty: Faculty of Science, Agriculture and Engineering
Department: Biochemistry and Microbiology
Research Interest(s): Phytomedicine-screening and evaluation of medicinal plants for their antimicrobial properties.
Active Research Project(s): Bioprospecting endophytes from Adansonia digitata for their antimicrobial compounds and exploration of mechanism of action.
Active Community Engagement: SASM-KZN.
Biography: Mr. J.S. Shandu is a lecturer in the field of Microbiology at the University of Zululand at kwa-Dlangezwa campus. He holds an MSc. degree in Microbiology. His research interests are in phytomedicine and aquatic microbiology.
Views

7

Downloads

0

Your Rating
N/A
Avg. Rating
0/5
( 0 Reviews )
Rating Breakup
1
0
2
0
3
0
4
0
5
0

Rating this item

FacebookXWhatsAppLinkedIn

More Detail

20202

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    PublicationJournal Article
    FacebookXWhatsAppLinkedIn
    Optimization of Fe@ Cu core–Shell nanoparticle synthesis, characterization, and application in dye removal and wastewater treatment
    2020
     | MDPI
    Green synthesis of core–shell nanoparticles is gaining importance nowadays as it is viewed as being environmental friendly and cost effective. The present study aimed to synthesize iron@copper core–shell nanoparticles using a polysaccharide-based bioflocculant from Alcalegenis faecalis and to evaluate its efficiency in dye removal and river water and domestic wastewater treatment. The synthesized samples were characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, transmission electron microscopy, and UV-Vis spectroscopy analysis. To optimize the best concentration for core–shell formation, different ratios of iron to copper were prepared. Sample 1 (S1) contained 1:3 iron to copper (Fe 25%–Cu 75%), sample 2 (S2) contained 1:1 iron to copper (Fe 50%–Cu 50%), and the third sample (S3) contained 3:1 iron to copper (Fe 75%–Cu 25%). The flocculation activity (FA) was above 98% at 0.2 mg/mL for all the samples and the samples flocculated well under acidic, alkaline, and neutral pH conditions. Sample 3 was shown to be thermostable, with flocculation activity above 90%, and samples 2 and 1 were also thermostable, but the flocculation decreased to 87 at 100 °C. All three samples revealed some remarkable properties for staining dye removal as the removal efficiency was above 89% for all dyes tested. The synthesized core–shell nanoparticles could remove nutrients such as total nitrogen and phosphate in both domestic wastewater and Mzingazi river water. Furthermore, high removal efficiency for chemical oxygen demand (COD) and biological oxygen demand (BOD) was also observed.
    • 1
    • 7
    • 0
  • Thumbnail Image
    PublicationJournal Article
    FacebookXWhatsAppLinkedIn
    Biosynthesis, characterization, and application of iron nanoparticles: in dye removal and as antimicrobial agent
    2020
     | Springer Nature
    Green protocols for synthesizing nanoparticles have demonstrated numerous benefits and advantages, which include environmental friendliness, good efficacy and possess less threat to human. The aim of this study was to biosynthesize, characterize and evaluate the effectiveness of biosynthesized iron nanoparticles. The bioflocculant was extracted using a solvent extraction method and purified by 100 mL distilled water and a mixture of chloroform and butanol (5:2 v/v). Iron nanoparticles (FeNPs) were successfully synthesized through the chemical reduction method. Where 0.5 g of bioflocculant was mixed with 3 mM iron sulphate (FeSO4) solution and left to stand at room temperature for 24 h. Characterization of the as-synthesized nanoparticles was achieved with a Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDX) and Fourier-Transform Infrared spectroscopy (FT-IR). The various parameters that effect on flocculation activity were evaluated, with optimum flocculation activity at a dosage size of 0.4 mg/mL (88%). The FeNPs were found to be cation-dependent Mg2+ (82%) and flocculate both in acidic pH 3 and in alkaline pH 11 with (93%) flocculation activity. The synthesized FeNPs are thermostable as they maintain flocculation activity above 80% at 100 °C temperatures.
    • 1
    • 6
    • 0