Jane Catherine Ngila

Jane Catherine Ngila
African Academy of Sciences | AAS · Executive Director office

B.Ed (Sci), MSc Chemistry, PhD Analytical Chem
Leadership and strategic direction of The AAS’s programmatic and operational management: Transform lives through science

About

216
Publications
47,229
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,793
Citations
Introduction
Analytical/environmental research work focuses on water pollution monitoring, developing analytical methodologies for detecting metal pollutants and other chemical substances including their speciation analysis, in water. She is currently investigating nanocomposite electrospun fiber adsorbents and nanocomposite membranes for removal of pollutants in contaminated drinking water and wastewater effluents.
Additional affiliations
February 2020 - January 2021
Riara University
Position
  • Deputy Vice Chancellor
Description
  • Leadership in Riara University in delivering the University strategy, objectives, and core purpose, academic affairs and research functions of the University, including student affairs.
April 2011 - August 2014
University of Johannesburg
Position
  • Professor of Analytical /Environmental Chemistry
Description
  • Current research in nanotechnology and water treatment strategies; Speciation analysis of element in surface water
April 2011 - present
University of Johannesburg
Position
  • Professor (Full)
Description
  • Analytical /Environmental Chemistry Nanotechnology and Water Treatment Adsorption Chemistry (adsorbents and membranes) Analysis of Metals and Organic Compounds Water quality monitoring and Speciation analysis Electroanalysis and Chemical Sensors
Education
January 1991 - October 1996
University of New South Wales
Field of study
  • Chemistry

Publications

Publications (216)
Article
There are a high number of COVID-19 cases per capita in the world that goes undetected including clinical diseases compatible with COVID-19. While the presence of the COVID-19 in untreated drinking water is possible, it is yet to be detected in the drinking-water supplies. COVID-19 viral fragments have been found in excrete, this call for wastewate...
Article
The contamination of the environment by organic pollutants is a major risk factor, particularly for developing countries. Selected organic pollutants (SOPs) like the phenolic compounds, polyaromatic hydrocarbons (PAHs), pesticides, and herbicides pose serious environmental and health issues owing to their toxic characteristics and poor degradabilit...
Article
Full-text available
This paper focuses on an in situ interfacial polymerization modification of polyamide thin film composite membranes with acrylic acid (AA) and zinc oxide (ZnO) nanoparticles. Consequent to this modification, the modified polyamide thin film composite (PA–TFC) membranes exhibited enhanced water permeability and Pb (II) heavy metal rejection. For exa...
Article
Full-text available
Availability of clean water is of concern due to pollution and diminishing supply pollution. However, purification is possible depending on the incorporated contaminants. Domestic wastewater contains dissolved organic matter and its remediation can be done by oxidation. The best oxidation can be achieved by electron transfer the same way metabolic...
Article
Parabens are widely used as preservatives in pharmaceutical and personal care products, but are regarded as endocrine disruptor compounds. The presence of parabens has potential effects on aquatic ecosystems and human health. This has led to the development of various methods for the removal of these recalcitrant compounds. This study presents an o...
Article
Artificial intelligence is finding its ways into the mainstream of day-to-day operations. Novel AI application techniques such as the artificial neural network (ANN), fuzzy logic, genetic algorithms and expert systems have gained popularity in the fourth industrial revolution era. Due to the chemical composition, inherent complexity, incoherent flo...
Article
The energy demand is ever rising with population increase and technology evolution. Coal consumption in South Africa is estimated to be 86% of the total energy demand. It has a high magnitude of environmental pollution and contributes to climate change. This calls for cleaner, reliable, sustainable, decarbonized, decentralized, affordable, digitize...
Article
Full-text available
The impact of worldwide water scarcity, further exacerbated by environmental pollution, necessitates the development of effective water treatment membranes. Herein, we report the synthesis and characterization of nanocomposite membranes containing hyperbranched polyethyleneimine (HPEI) stabilized bi-and trimetallic nanoparticles. These membranes we...
Article
This study reports on the treatment of wastewater containing dissolved organic matter (DOM). DOM introduces complexing agents, promotes bacterial growth, and affects the color plus taste of water negatively. The normal practice for treatment such pollutants is the use of introduction of oxidizing agents in the water. However, this introduces second...
Article
Full-text available
Nanotechnology has provided an unprecedented opportunity in addressing challenges faced by cancer treatment. Nanomaterials represent a promising and versatile method in biomedical applications. PEGylation of nanomaterials is considered as the most effective strategy for commercial relevance. The purpose of this study was to develop a novel solvothe...
Article
Full-text available
The disposal of sludge processes accounts for 60% of the total operation and 40% of total emissions of greenhouse gas from wastewater treatment plants operations. Moreover, sludge contains pathogenic microorganisms, organics, inorganics, trace metals and emerging micropollutants, which can be a public health menace. To comply with the Environmental...
Article
The objectives of this study were to assess the suitability of metal oxide nanomaterials for removal of major cations Na+, K+, Ca2+ and Mg2+ from seawater. The as-synthesised nanomaterials were characterized using different techniques, such as XRD, TEM, and BET. The simultaneous removal of Na+, K+, Ca2+ and Mg2+ ion from aqueous solutions by α-Fe2O...
Article
Full-text available
In the present study, carbon nanodots (CNDs) were successfully anchored on magnetite (Fe3O4) under magnetic stirring and the nanocomposite prepared was assessed as a new adsorbent for ultrasonic-assisted magnetic solid-phase dispersive extraction of chlorpyrifos (CPF) and triclosan (TCS) in water samples. Detection was achieved using ultrahigh perf...
Article
A simple and rapid method for determination of azinphos-methyl, parathion-methyl and ethoprofos, group of organophosphorus pesticides in wastewater matrices, is presented. A chemometric approach for the optimisation of vortex-assisted dispersive liquid–liquid microextraction experimental conditions prior to liquid chromatography–mass spectrometry d...
Article
Effective removal of organic pollutants from water bodies using both adsorption and photocatalysis provides an effective solution for both ecological and environmental importance. Degradation of organics such as parabens using photocatalytic process with visible light irradiation is challenging. However, semiconductor photocatalysis based on solar...
Article
Metal–organic frameworks (MOFs) have gained developing interest due to their high specific surface area and pore volume, which has been exploited for gas storage, sensors and, drug delivery. This study presents the synthesis of a non-toxic, biocompatible and thermally stable MIL-53(Fe) and the preparation of its silver(I) nitrate nano-composite. Th...
Article
Full-text available
Background β-site amyloid precursor protein cleaving enzyme (BACE 1) is the rate limiting enzyme in the formation of neurotoxic β-amyloid (Aβ residues (Aβ1-40 or Aβ1-42) considered as key players in the onset of Alzheimer’s disease (AD). Consequently, BACE 1 is one of the principal targets of anti-AD therapy with many small molecule BACE 1 inhibit...
Article
In this work, 2,2’-azo-bis-butyronitrile (AIBN) was exploited as an initiator for the successful bulk heterogeneous functionalization of polyethersulfone (PES) using polymethacrylic acid (PMAA), for the first time. To this end, pH-responsive and exceptionally low fouling membranes of extremely low grafting degrees with low adhesion and high rejecti...
Article
Studies of relationship between pH variation and the nutrients distribution in the substrate/water mixture provides information about the concentration of the nutrients anchored in the substrate and the efficiency in which they are availed and controlled for plant relative growth. The technique for determining this relationship was based on measure...
Article
Full-text available
A simple, rapid and efficient solid-phase extraction method based on synthesized carbon nanodots was developed for the preconcentration and extraction of personal care products and organophosphorus pesticides in environmental matrices. Factorial (screening) and central composite designs were employed for the optimization of experimental conditions...
Article
Full-text available
Remediation of copper(II) and zinc(II) ions with the aid of metal-organic frameworks (MOFs) from its respective aqueous media was carried out. The MOFs were prepared by a solvothermal synthesis procedure of copper and zinc with benzene 1,4-dicarboxylic acid (BDC). Resultant metal-organic frameworks characterization was done with the aid of X-ray di...
Article
Full-text available
Multiwalled carbon nanotube (MWCNT) was fixed onto the surface of a magnetic silica (Fe 3 O 4 @SiO 2 ) substrate via chemical vapour deposition (CVD). Acetylene gas was used as the carbon source and cobalt oxide as the catalyst. The chemical and physical characteristics of the materials were investigated by transmission electron microscopy (TEM), R...
Article
Loss of available land for plant growth has made other options that allow an efficient use of water and fertilizers which increase crop quality and productivity. Some systems such as hydroponics need a constant air and fluid circulation as well as nutrient refill that put strain on the cost of production. Without such a system, many growers dump th...
Article
Full-text available
This work reports the preparation and application of Fe2O3-SiO2-PAN nanocomposite for the removal of Cr3+, Cu2+, Al3+, Ba2+, Zn2+, Ni2+, Mn2+, Co2+, and Ti3+ from seawater. X-ray diffraction (XRD), scanning electron microscope/energy dispersive X-ray spectroscopy (SEM/EDS), transmission electron microscope (TEM), and Brunauer-Emmett-Teller (BET) ch...
Article
Full-text available
Introduction This study reports on water management in the fields found in arid areas by the improvement of the soil’s water retention capacity. This was done using hydrogels from animal wastes to mitigate the effects of climate change that lead to rapid evaporation of water hence increased desertification rates. Method The modification of the cow...
Article
Full-text available
This paper reports the removal of fluoride ions in stored drinking water by a container made from chemically modified polyethylene material. To anchor triethylamine within the structure of the polyethylene material and improve its value, the polyethylene was first heated to melting. To the molten material, hot vegetable oil was added slowly with co...
Article
Full-text available
Synthesis of WO3 and Fe-doped WO3 nanoparticles is done by use of Microwave irradiation technique. X-ray powder diffraction confirmed the formation of a monoclinic crystalline structure. The as-prepared samples are characterised by transmission electron microscope, Braunuer, Emmett and Teller, Raman spectroscopy, photoluminescence, X-ray photoelect...
Article
Geochemistry, pollution load index (PLI) contamination factor (CF), geoaccumulation index (Igeo) and anthropogenic factors (AF) of sediment samples collected from Olonkoro river, South West, Nigeria has been conducted. Atomic absorption spectrometry (AAS), X-ray diffraction (XRD) and Fourier Transform infrared (FTIR) techniques were explored for sa...
Article
Geochemistry, pollution load index (PLI) contamination factor (CF), geoaccumulation index (Igeo) and anthropogenic factors (AF) of sediment samples collected from Olonkoro river, South West, Nigeria has been conducted. Atomic absorption spectrometry (AAS), X-ray diffraction (XRD) and Fourier Transform infrared (FTIR) techniques were explored for sa...
Research
Full-text available
Geochemistry, pollution load index (PLI) contamination factor (CF), geoaccumulation index (Igeo) and anthropogenic factors (AF) of sediment samples collected from Olonkoro river, South West, Nigeria has been conducted. Atomic absorption spectrometry (AAS), X-ray diffraction (XRD) and Fourier Transform infrared (FTIR) techniques were explored for sa...
Article
Catalytic membranes consisting of Fe/Pd bimetallic nanoparticles were fabricated via interfacial polymerisation for the degradation of a polychlorinated biphenyl (PCB-153). Characterisation techniques for the membranes included Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopy, scanning electron microscopy (SEM) couple...
Article
Full-text available
Carbapenem-resistant Enterobacteriaceae (CRE)-mediated infections remain a huge public health concern. CRE produce enzymes such as metallo-β-lactamases (MBLs), which inactivate β-lactam antibiotics. Hence, developing efficient molecules capable of inhibiting these enzymes remain a way forward to overcoming this phenomenon. In this study, we demonst...
Article
Full-text available
The modified database in the pH, redox equilibrium calculations code (PHREEQC) with a Tipping and Hurley database (T_H.DAT) coupled with the Windermere's humic acid model (WHAM) was used to simulate scale formation potential in cooling water circuitry, at Eskom power generating stations in South Africa. This study reports a semi-empirical simulativ...
Chapter
In this study, we investigated the use of a laboratory batch anaerobic digester technology, for biochemical methane potential (BMP) and the bioenergy process design from anaerobic co-digestion of different organics fraction of municipal solid waste (OFMSW) originating from the city’s landfills. The carbon-to-nitrogen (C/N) ratio of OFMSW was found...
Article
The degradation of Rhodamine B dye (RhB) by polysaccharide‐synthesized silver nanoparticles (PE‐AgNPs) has been studied by fluorescence excitation (λex) and emission (λem) matrices (FEEM) spectroscopy. This study reports the behaviour of RhB under the influence of PE‐AgNPs using the FEEM technique. The observed 3D excitation and emission maps revea...
Article
Full-text available
This review study is dealing with the recent advances and developments in the metal–organic framework (MOF) materials especially in the aspect of environmental remediation of heavy metals. Its application in some area of technological and mechanical advancement was also considered. The process of its synthesis and characterization was also put into...
Article
The CdS WO3 nanocomposite was successfully synthesized using the hydrothermal method. The catalytic capacity of CdS WO3 nanocomposite was evaluated based on various parameters, such as pH, catalyst load, bicarbonate and persulfate concentrations. The ratios of CdS to WO3 was also examined to acquire the photocatalytic performance in addition, the b...
Article
Wastewater treatment challenges by conventional methods have necessitated the need for alternative/complementary methods that are environmentally benign and efficient especially toward recalcitrant organic pollutants. In this regard, a novel photoanode consisting of a p-n MoS2-SnO2 heterojunction anchored on expanded graphite (EG) was fabricated an...
Article
Background Parabens are synthetic esters used extensively as preservatives and/or bactericides in personal care personal products. Objective Development and validation of a novel robust chemometric assisted analytical technique with superior analytical performances for the determination of ethylparaben, methylparaben and propylparaben, using simul...
Article
Herein, we report on a fast route of microwave-assisted synthesis for powder composites towards robust and ultralow-fouling polymethacrylic acid (PMAA)-grafted polyethersulfone (PES) membranes. The grafting was confirmed by Fourier transform infra-red spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR) and X-ray diffraction spectrosc...
Article
Full-text available
Biochemical quantitative characterization of biomass is becoming of key importance with the awareness and implementation of the fourth industrial revolution (FIR) and specifically in waste to energy recovery technologies. In this study, we investigated the quantification, characterization and anaerobic digestion of organic fraction of municipal sol...
Article
This work demonstrates the synthesis, characterization and application of a hyperbranched polyethyleneimine/polysulfone (HPEI/PSf) thin film composite (TFC) membrane. The membrane was accessed via an interfacial polymerization of trimesoyl chloride and HPEI. The membrane samples were characterized by Fourier Transform Infrared-Attenuated Total Refl...
Article
Full-text available
A novel Pd–ZnO-expanded graphite (EG) photoelectrode was constructed from a Pd–ZnO-EG nanocomposite synthesised by a hydrothermal method and characterised using various techniques such as X-ray diffractometry (XRD), Raman spectroscopy, UV-Vis diffuse reflectance spectroscopy, nitrogen adsorption–desorption analysis, transmission electron microscopy...
Article
In this study, a feasibility study was carried out in terms of quantification-characterization of waste, biomethane potential from organic biomass and bio-digester selection and designing. From waste quantification, 38% was found to be an organic fraction of the municipal solid waste (OFMSW) of the 1.4 million tonnes per year. The composition of th...
Article
The study describes the preparation of graphene oxide based silica coated magnetic nanoparticles (Fe3O4@SiO2@GO) functionalized with 2-phenylethylamine (PEA) as an adsorbent for selected organophosphorus pesticides (OPPs) namely chlorpyrifos, parathion, and malathion from aqueous solution. The synthesised (Fe3O4@SiO2@GO-PEA) adsorbent was character...
Article
A rapid three-step sequential extraction method was developed under microwave radiation followed by inductively coupled plasma-optical emission spectroscopic (ICP-OES) and ion-chromatographic (IC) analysis for the determination of sulphur forms in coal samples. The experimental conditions of the proposed microwave-assisted sequential extraction (MW...
Article
In this paper, the tyre-based activated carbon solid phase extraction (SPE) method was successfully developed for simultaneous preconcentration of metal ions in the model and real water samples before their determination using flame atomic absorption spectrometry (FAAS). The activation of carbon was achieved by chemical activation and the tyre-base...
Article
Full-text available
In the study, Fe2O3–SiO2 nanocomposite (prepared using sol–gel method), was used as an adsorbent for the removal of Na, K, Ca and Mg ions from synthetic brine solutions. The structural and surface characteristics of the nanoadsorbent were investigated by N2 adsorption–desorption, transmission electron microscopy, scanning electron microscopy couple...
Article
Four novel Schiff bases were synthesized by the condensation reaction of 2-hydroxyl-3-nitrobenzaldehyde with either benzothiazoles or benzimidazolamines. The compounds 1-4 were characterized by spectroscopic and analytical methods. The crystal structures of 6-methoxy-1,3-benzothiazol-2-amine and compound 2 are reported only. The 6-methoxy-1,3-benzo...
Article
Full-text available
TiO 2 fibers were prepared through electrospinning of poly methyl methacrylate (PMMA) and titanium isopropoxide (TIP) solution followed by calcination of fibers in air at 500°C. Cetyltrimethylammonium bromide (CTAB) protected palladium nanoparticles (Pd NPs) prepared through reduction method were successfully adsorbed on the TiO 2 nanofibers (NF)....
Article
In this work, a nanocomposite photocatalyst which consists of palladium (Pd), zinc oxide (ZnO) as well as exfoliated graphite (EG) was synthesised, characterised and applied to the removal of acid orange 7 dye as a model organic pollutant. The Pd-ZnO-EG nanocomposite was synthesised by a one-pot hydrothermal technique in a Teflon-lined stainless st...
Article
Full-text available
Nanocrystals of Ag2Te and Ag/Ag2Te were synthesised via hydrothermal method using diphenyl ditelluride as a new tellurium source and 1-butyl-3-methyl imidazolium acetate (BMIA IL) as structure controlling and conducting coating source. As-synthesized nanocrystals were characterized by XRD, SEM-EDS, XPS, TEM, FT-IR, UV-Vis, and PL measurements. The...
Article
Full-text available
The development of a strategy to stabilise the cubic phase of HfO 2 at lower temperatures is necessary for the emergence of unique properties that are not realised in the thermodynamically stable monoclinic phase. A very high temperature (>2600 °C) is required to produce the cubic phase of HfO 2 , whereas the monoclinic phase is stable at low tempe...
Article
Full-text available
Currently in South Africa, online flue gas desulphurisation (FGD) is being utilized as one of the most effective methods for total sulphur reduction in coal samples during the combustion process. However, the main disadvantage associated with FGD is the formation of its by-products (FGD gypsum). The latter is mostly formed in low grade quality, the...