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The reduction of hexavalent chromium by sulphite in wastewater
The reduction of hexavalent chromium, Cr(VI), in unbuffered aqueous solution by sulphite was investigated as a function of pH, possible dosage and contact time required to reach equilibrium. Dissolved Na2Cr2O7.2H2O served ...
Die persoonlike geloofsdaad van die nagmaalsgebruiker
The act of personal faith of the Communicant The aim of this article is to determine the nature of the communicant’s act of faith in the Three Formulae of Unity. The main theses are: • Holy communion is only instituted ...
Separation and recovery of some platinum group metals (PGMs) by means of selective photocatalytic reduction
The historical development of public service commissions in South Africa had been a process that formed part of the administration of the country since Unification in 1910. Although public service commissions existed in ...