Browsing Chemistry by Title
Now showing items 254-271 of 271
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Technologies for remediation of emerging contaminants in wastewater samples
(Wiley-Blackwell, 2019)Introduction Various Emerging Contaminants Different Types of Bimetallic Nanoparticles Methods Used for Synthesis Techniques Used for Characterization Methods Used for Remediation Conclusions Acknowledgments -
Testing of eight medicinal plant extracts in combination with kresoxim-methyl for integrated control of botrytis cinerea in apples
(MDPI, 2015)Botrytis cinerea is a fungus that causes gray mold on many fruit crops. Despite the availability of a large number of botryticides, the chemical control of gray mold has been hindered by the emergence of resistant strains. ... -
Towards the development of a novel bipolar-based battery in aqueous electrolyte: Evaluation of the electrochemical properties of NiCu based hydroxide electrodes fabricated on Ni–mesh and graphite composite current collectors
(Journal of Energy Storage, 2022)The use of bipolar electrodes in rechargeable batteries can improve specific power, simplify cell design, and reduce manufacturing costs. However, bipolar-based batteries still suffer from many drawbacks. Therefore, ... -
Trace elements risk assessment for consumption of wild mussels along South Africa coastline
(Elsevier, 2021)The study aimed to contribute to the scarce data on concentrations in the soft tissue of wild mussels growing in coastal cities of South Africa. The intake of 26 micro and macroelements was estimated. The mass fractions ... -
Transformation of fly ash based nanosilica extract to BEA zeolite and its durability in hot liquid
(Elsevier, 2020)Power generation in South Africa relies heavily on the combustion of coal and during this process, coal fly ash (CFA) is generated as by-product, which raises several environmental issues. The transformation of CFA into a ... -
Treatment of acid mine drainage with coal fly ash in a jet loop reactor pilot plant
(Minerals Engineering, 2020)A 1500 L batch jet loop reactor pilot plant was designed, constructed, and evaluated for performance in the treatment of acid mine drainage (AMD) using coal fly ash with a view to optimize its operation and generate ... -
Treatment of persistent organic pollutants in wastewater using hydrodynamic cavitation in synergy with advanced oxidation process
(Springer, 2017)Persistent organic pollutants (POPs) are very tenacious wastewater contaminants. The consequences of their existence have been acknowledged for negatively affecting the ecosystem with specific impact upon endocrine disruption ... -
Trifluoroacetic acid: Toxicity, sources, sinks and future prospects
(Multidisciplinary Digital Publishing Institute (MDPI), 2024)Trifluoroacetic acid (TFA) is a known and persistent pollutant in the environment. Although several direct anthropogenic sources exist, production from the atmospheric degradation of fluorocarbons such as some hydrofluorocarbons ... -
Tropospheric modeling of acetic acid in the UK for summer, winter and spring seasons using a mesoscale 3-dimensional chemistry and transport model, WRF-Chem-CRI
(Elsevier, 2021)The measurement of acetic acid during the ClearfLo campaign for Winter 2012 and Summer 2012 in London and at the Weybourne Research Station (East Anglia), UK for Spring 2013 gives the average ± 1σ mixing ratios of 45.9 ± ... -
A two-decade anthropogenic and biogenic isoprene emissions study in a London urban background and a London urban traffic site
(MDPI, 2018)A relationship between isoprene and 1,3-butadiene mixing ratios was established to separate the anthropogenic and biogenic fractions of the measured isoprene in London air in both urban background (Eltham) and urban ... -
A Two-Decade Anthropogenic and Biogenic Isoprene Emissions Study in a London Urban Background and a London Urban Traffic Site
(MDPI, 2018-10-03)A relationship between isoprene and 1,3-butadiene mixing ratios was established to separate the anthropogenic and biogenic fractions of the measured isoprene in London air in both urban background (Eltham) and urban ... -
Underpotential deposition of SnBi thin films for sodium ion batteries: The effect of deposition potential and Sn concentration
(Elsevier, 2019)Bimetallic SnBi film was deposited on a Cu foil substrate via the electrochemical atomic layer deposition (E-ALD) technique. The deposition attainment of Sn and Bi were investigated using cyclic voltammetry (CV) and ... -
An unusual 2,3-secotaraxerene and other cytotoxic triterpenoids from pleiocarpa pycnantha (apocynaceae) leaves collected from Nigeria
(MDPI, 2014)Three known triterpenoids, namely ursolic acid (1), and the 27-E- and 27-Z-pcoumaric esters of ursolic acid (compounds 2, 3), were isolated together with a new triterpene 2,3-seco-taraxer-14-en-2,3-lactone [pycanocarpine ... -
Use of coal fly ash as a catalyst in the production of biodiesel
(Slovnaft VÚRUP, 2010)South Africa is largely dependent on the combustion of coal for electricity production; Eskom’s coalfired power stations consume approximately 109 million tons of coal per annum, producing around 25 million tons of ash, ... -
Voltammetric and spectroscopic determination of rare earth elements in fresh and surface water samples
(MDPI, 2018)The increasing demand for rare earth elements in green technology, electronic components, petroleum refining, and agricultural activities has resulted in their scattering and accumulation in the environment. This study ... -
Waste minimization protocols for the process of synthesizing zeolites from South African coal fly ash
(MDPI, 2013)Production of a high value zeolite from fly ash has been shown to be an avenue for the utilization of South African fly ash which presently constitutes a huge disposal problem. The synthesis of zeolites Na-P1 and analcime ... -
Wood-derived, monolithic chainmail electrocatalyst for biomass-assisted hydrogen production
(Wiley, 2023)The chainmail catalyst by encapsulating an active species within the carbon support is a well-established concept to endorse extraordinary stability for catalytic reactions under harsh conditions. Conventional chainmail ... -
Zinc(ii) complex of (Z)-4-((4-Nitrophenyl)Amino)Pent-3-en-2-one, a potential antimicrobial agent: synthesis, characterization, antimicrobial screening, DFT calculation and docking study
(Chemical Society of Ethiopia, 2023)Herein, the synthesis and characterizations of (Z)-4-((4-nitrophenyl)amino)pent-3-en-2-one (HL) ligand and its Zn(II) complex are reported. The compounds were characterized using elemental and thermogravimetric (TGA) ...