Výsledky vyhledávání - "J. Catherine Ngila"

Akademický článek

Novel synthesis, characterization, and application of calcium ferrate (VI) in water treatment

Autor: Gcobisa Ndzungu, Caliph Zvinowanda, J. Catherine Ngila

Publikováno v: Applied Water Science, Vol 14, Iss 3, Pp 1-15 (2024)

Abstract Poor raw water quality has led science and technology research to explore more environmentally friendly water treatment methods, such as advanced oxidation processes. Ferrate (VI) salts have been regarded as a new green oxidant, cost-effecti

Externí odkaz: https://doaj.org/article/033dfbc91e3c45e7827c365aa2b30be4

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Akademický článek

Hyperbranched polyethylenimine-modified polyethersulfone (HPEI/PES) and nAg@HPEI/PES membranes with enhanced ultrafiltration, antibacterial, and antifouling properties

Autor: Hussein K. Okoro, Lwazi Ndlwana, Monisola I. Ikhile, Tobias G. Barnard, J. Catherine Ngila

Publikováno v: Heliyon, Vol 7, Iss 9, Pp e07961- (2021)

This study reports a simple fabrication of polyethersulfone (PES)-based membranes, their characterisation, and application. These membranes are modified with hyperbranched polyethyleneimine (HPEI) and -silver (nAg)-decorated HPEI. These were then com

Externí odkaz: https://doaj.org/article/86ec8c49d068457fae2898f0ce503b54

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Akademický článek

Application of waste tyre-based activated carbon for the removal of heavy metals in wastewater

Autor: K. Mogolodi Dimpe, J. Catherine Ngila, Philiswa N. Nomngongo

Publikováno v: Cogent Engineering, Vol 4, Iss 1 (2017)

This study presents the preparation and characterization of chemically activated carbonaceous materials obtained from waste tyres and the prepared adsorbent was applied for the adsorptive removal of Cd(II) and Pb(II) in the domestic wastewater sample

Externí odkaz: https://doaj.org/article/c3b972b4677544ae84b0efbe877499db

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Akademický článek

IMIDAZOLIUM IONIC LIQUIDS AS DISSOLVING SOLVENTS FOR CHEMICAL-GRADE CELLULOSE IN THE DETERMINATION OF FATTY ACIDS USING GAS CHROMATOGRAPHY-MASS SPECTROMETRY

Autor: Kessy F. Kilulya, Titus Alfred Makudali Msagati, Bhekie B. Mamba, J. Catherine Ngila, Tamara Bush

Publikováno v: BioResources, Vol 6, Iss 3, Pp 3272-3288 (2011)

A quick, simple, and environmentally friendly sample preparation method for fatty acids analysis from chemical-grade cellulose was developed employing imidazolium based ionic liquids as solvents. A variety of imidazolium based ionic liquids were scre

Externí odkaz: https://doaj.org/article/ed372e0327ed4813b0ffd0048250e0d3

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Akademický článek

Voltammetric investigation of the distribution of hydroxo-, chloro-, edta and carbohydrate complexes of lead, chromium, zinc, cadmium and copper: Potential application to metal speciation studies in brewery wastewater

Autor: J. Catherine Ngila, Ned Silavwe, Jackson K. Kiptoo, Jonathan E.R. Thabano

Publikováno v: Bulletin of the Chemical Society of Ethiopia, Vol 19, Iss 1, Pp 125-138 (2005)

This paper reports results on complex formation reactions between OH-, Cl-, EDTA and carbohydrate ligands with Pb2+ ions at various [LT]:[MT] ratios and at different pH values (1.5-13.0). Differential pulse anodic stripping voltammetry (DPASV) employ

Externí odkaz: https://doaj.org/article/c594462d7dfa48139a95a41bb99aa95d

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Factorial Design Optimisation of Solid Phase Extraction for Preconcentration of Parabens in Wastewater Using Ultra-High Performance Liquid Chromatography Triple Quadrupole Mass Spectrometry

Autor: Vallerie A. Muckoya, Philiswa N. Nomngongo, J. Catherine Ngila

Publikováno v: Current Analytical Chemistry. 16:436-446

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 analyt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5df3450a93510b043894f7ebc81de70
https://doi.org/10.2174/1573411014666180627150854

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Degradation of methyl orange on Fe/Ag nanoparticles immobilized on polyacrylonitrile nanofibers using EDTA chelating agents

Autor: Lwazi Ndlwana, Sekhar C. Ray, Eutilério F.C. Chaúque, J. Catherine Ngila

Publikováno v: Journal of Environmental Management. 236:481-489

Bimetallic nanoparticles are effective for the removal of organic pollutants from environmental water samples through catalytic degradation reactions. Hence, this work reports on the preparation of Fe/Ag bimetallic nanoparticles immobilized on electr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3233559e724aa7d4e0fc5af82c1cf48
https://doi.org/10.1016/j.jenvman.2019.02.023

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Application of response surface methodology for simultaneous removal of major cations from seawater using metal oxide nanostructures

Autor: null Denga Ramutshatsha, null J Catherine Ngila, null Patrick G Ndungu, null Philiswa N Nomngongo

Publikováno v: Water SA. 46

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, T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cfa0c2e449d3344f6a938459fb166cfc
https://doi.org/10.17159//wsa/2020.v46.i2.8247

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Application of response surface methodology for simultaneous removal of major cations from seawater using metal oxide nanostructures

Autor: Patrick Ndungu, Philiswa N. Nomngongo, J. Catherine Ngila, Denga Ramutshatsha

Publikováno v: Water SA, Volume: 46, Issue: 2, Pages: 313-321, Published: APR 2020

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9f24989b2fbdbedb3da9c7bbe4b90fd
https://doi.org/10.17159/wsa/2020.v46.i2.8247

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