Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Ammonia-Ammonium"”.
-
Direct oxidative Ammonia-Ammonium salt leaching of sphalerite concentrate from the Gamsberg Mine and study of the catalytic effect of Cu(II) on Zinc extraction
The feasibility of using ammonia-ammonium salts to selectively leach Zn over Fe from Gamsberg sphalerite flotation concentrate under moderate temperatures and atmospheric pressure was investigated in stirred tank reactors. This approach is suggested as an alternative primary method for extracting …
-
Factors influencing ammonia metabolism during prolonged exercise in man
… were undertaken to obtain further information on ammonia/ammonium (NH3) metabolism during submaximal exercise and how it might be influenced by (1) exercise intensity and duration, (2) carbohydrate ingestion and (3) branched-chain amino acid (BCAA) feeding. A total of 25 subjects participated in …
-
Design and Analysis of Nonthermal Plasma Electrolytic Cells for Ammonia Synthesis
Haber-Bosch production of ammonia, a fertilizer and energy-dense alternative fuel, accounts for 1.8 % of global fossil fuel demand and 1-2 % of global CO2 emissions. Nonthermal plasma-assisted ammonia synthesis is one solution that is able to counter these carbon emissions. The technology has been …
-
Investigating Ammonium Toxicity In The Performance Of Recirculating Periphytic Algal Wastewater Treatment Systems
… is characterized by elevated concentration of ammonia and high pH, it may inhibit algae in algal treatment systems. An experiment was conducted to test the hypothesis that diluting biodigester filtrate concentration improves algal biomass production and nutrient removal in recirculating algal …
-
Long-term spatiotemporal water quality and phytoplankton dynamics in Severn Sound, Ontario: a delisted great lakes area of concern
… chlorophyll a, conductivity, total ammonia/ammonium nitrogen, total organic nitrogen, and total phosphorus. A PERMANOVA also revealed that nearshore-offshore water quality was significantly different across region but found no statistical difference in embayments. Overall, these …
-
Monte Carlo Simulation Methods for Studying the Thermodynamics of Ligand Binding & Transfer Processes in Biomolecules
… the thermodynamics of transport through the ammonium transporter Amt-1 from Archaeoglobus fulgidus (AfAmt-1). Ammonium is the most directly utilizable nitrogen source for plants and microorganisms. AfAmt-1 and its homologues facilitate the transport of ammonia/ammonium across biological …
-
Rh-Based Catalysis Chemistry of Aqueous-Phase Nitrogen Treatment Reactions
… (NO2-) consumption is toxic to humans, and ammonia/ammonium (NH3/NH4+) is toxic to aquatic life. Both the oxidized and reduced species contribute towards eutrophication and soil acidification. Catalytic denitrification has emerged as a promising technology for the remediation of …
-
An electrochemical and leach study of the oxidative dissolution of chalcopyrite in ammoniacal solutions
… treatment are ferric sulphate, chloride and ammoniacal systems. The ferric sulphate system does not work well under atmospheric conditions, except in combination with thermophilic microorganisms, whereas the chloride system has only recently been evaluated more seriously for heap leach …
-
Exploration of the thiosulphate process for the dissolution of gold from electronic waste and its recovery through ion-exchange
… gold from PCBs. Literature studies show ammonium thiosulphate to be a viable option in comparison to the more widely used cyanide leaching route (Aylmore & Staunton, 2014). Thus, the ammonium-thiosulphate system containing ammonia, ammonium thiosulphate and copper (II) sulphate …