The control measures for deterioration of aerobic activated sludge were experimented. Wastewater samples with different pH, temperature, SVI, and MLSS were investigated to detect the cause of sludge deterioration. The results show that after being operated at high S2O3 2(which could lead to a pH decrease) loading in an A/O biological reactor treated for coking wastewater, though the pH was cont...

Nickel, cobalt and palladium ions can induce an innate immune response by triggering Toll-like receptor (TLR)-4 which is present on dendritic cells (DC). Here we studied mechanisms of action for DC immunotoxicity to gold and mercury. Next to gold (Na3Au (S2O3)2⋅2H2O) and mercury (HgCl2), nickel (NiCl2) was included as a positive control. MoDC activation was assessed by release of the pro-inflam...

The kinetic parameters for activation of yeast triosephosphate isomerase (ScTIM), yeast orotidine monophosphate decarboxylase (ScOMPDC), and human liver glycerol 3-phosphate dehydrogenase (hlGPDH) for catalysis of reactions of their respective phosphodianion truncated substrates are reported for the following oxydianions: HPO3(2-), FPO3(2-), S2O3(2-), SO4(2-) and HOPO3(2-). Oxydianions bind wea...

Activities and Findings Research and Education Activities: The research carried out involved the synthesis of platinum nanoparticles of different sizes and shapes and capped with PVP or other polymers such as polymethyl acrylates. TEM was used to determine the size and shape distributions and their changes during their catalytic activity in colloidal solutions.. Two reactions were studied. A ge...

ATP sulfurylases from Penicillium chrysogenum, Penicillium duponti, Aspergillus nidulans, and Neurospora crassa are strongly inhibited by 3'-phosphoadenosine-5'-phosphosulfate (PAPS), the product of the second (adenosine-5'-phosphosulfate kinase-catalyzed) reaction in the two-step activation of inorganic sulfate. The v versus [PAPS] plots are sigmoidal. At physiological concentrations of MgATP ...

Over the years, use of new alternative lixiviants for gold extraction has been investigated to overcome environmental concerns resulting from cyanidation process. Moreover, with global economic factors causing a decline in prices, it is crucial that novel hydrometallurgical methods extracting minimise operational costs by using low-priced reagents such as thiosulfate. In current study, response...

In the course of the synthesis of mixed oxidosulfido molybdates and tungstates by passing H2S gas through solutions of the oxido metalates, several new salts containing the metalates [MOS3] besides further anions (halides X−, hydrosulfide SH− or thiosulfate S2O 2− 3 ) were obtained as well-formed crystals. Their crystal structures have been determined using single crystal X-ray data. The salts ...