Humphries, M.S.; McCarthy, T.S.; Pillay, L.(Academy of Science of South Africa (ASSAf), 2017-01)
Wetlands are well known to be efficient at sequestering pollutants from contaminated water. We investigated metal accumulation in the peats of the Klip River, a natural wetland that has received contaminated water from ...
High-performance electrochemical capacitors will drive the next-generation portable, flexible and wearable electronics. Unlike the conventional all-carbon supercapacitors (electric double layer capacitors, EDLC) with high ...
Mnguni, M.J.; Lemmerer, A.(International Union of Crystallography, 2015-02)
Six derivatives of 4-amino-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one (4-aminoantipyrine), C11H13N3O, (I), have been synthesized and structurally characterized to investigate the changes in the observed hydrogen-bonding ...
Setifi, Z.; Valkonen, A.; Fernandes, M.A.; Glidewell, C.; Harrison, W.T.A.; Nummelin, S.; Boughzala, H.; Setifi, F.(International Union of Crystallography, 2015-05)
In 2,2′-bipyridin-1-ium 1,1,3,3-tetracyano-2-ethoxyprop-2-en-1-ide, C10H9N2+·-C9H5N4O-, (I), the ethyl group in the anion is disordered over two sets of atomic sites with occupancies 0.634 (9) and 0.366 (9), and the dihedral ...
It has been said that substitution of fullerenes with semiconductor nanocrystals in bulk heterojunction solar cells can potentially increase the power conversion efficiencies (PCE) of these devices far beyond the 10% mark. ...
Background: Pressurized hot water extraction (PHWE) technique has recently gain much attention for the extraction of biologically active compounds from plant tissues for analytical purposes, due to the limited use of organic ...
Bakatula, E.N.; Mosai, A.K.; Tutu, H.(South African Chemical Institute, 2015)
Batch experiments were conducted to study the effects of contact time, pH (3 to 8), initial concentration, presence of carbonate, sulphate, and competing ions (Fe3+, Ca2+, Sr2+, Mg2+) on the adsorption of U(VI) on ...
Tavengwa, N.T.; Cukrowska, E.; Chimuka, L.(South African Chemical Institute, 2015)
Ion imprinted nano-magnetic composite polymers for selective removal of hexavalent uranium were prepared by a precipitation polymerization technique in the presence of γ-methacryloxypropyltrimethoxysilane (γ-MPS) coated ...
Masindi, V.; Gitari, M.W.; Tutu, H.; De Beer, M.(South African Water Research Commission, 2015-10)
Acid mine drainage is generated when mining activities expose sulphidic rock to water and oxygen leading to generation of sulphuric acid effluents rich in Fe, Al, SO4 and Mn with minor concentrations of Zn, Cu, Mg, Ca, Pb ...
Grover, B.P.C.; Johnson, R.H.; Tutu, H.(South African Water Research Commission, 2016-01)
Mine leachates from gold tailings impoundments usually contain elevated concentrations of metals and sulphates that impact negatively on water quality. This study was aimed at assessing the leachability of such metals from ...
A continuous fixed-bed adsorption study was carried out by using phosphonated cross-linked polyethylenimine as an adsorbent for the removal of uranium (U) from aqueous solutions. The effect of inlet metal ion concentration ...
The adsorptive removal of Cu(II), Mn(II) and U(VI) by maghemite nanoparticles (NPs) was investigated under acid mine drainage (AMD) conditions to assess NP potential for remediating AMD-contaminated water. The effects of ...
Harmse, L.; Dahan-Farkas, N.; Panayides, J.L.; Van Otterlo, W.; Penny, C.(Public Library of Science., 2015-09-21)
Despite the increased understanding of colorectal cancer and the introduction of targeted drug therapy, the metastatic phase of the disease remains refractory to treatment. Since the deregulation of normal apoptosis ...