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 20 of 531 for “"Sulphate"”.
-
A kinetic study on anaerobic sulphate reduction : effects of sulphate and temperature
… kinetic information on the effects of feed sulphate concentration and temperature on the anaerobic sulphate reduction process and to develop a kinetic model to explain this dependency. These objectives were addressed by performing batch and continuous sulphate reduction experiments using a …
-
Potassium sulphate production from an aqueous sodium sulphate waste from lead acid battery recycling
In Canada and around the globe, government and regulatory agencies have implemented regulations to regulate the industries' amount and concentration of waste disposed into the environment. The regulations are enacted and executed to protect human, animal or plant health or the environment and other …
-
Physical Sulphate Attack on Concrete
Field experience with concrete exposed to sulphates has often shown that concrete can suffer from surface scaling above the ground level caused by physical sulphate attack. This type of attack has been ignored and, in some instances, confused with chemical sulphate attack. In addition, current …
-
Screening for childhood anaemia using copper sulphate densitometry
… objective of this study was to evaluate copper sulphate densitometry as a screening method for anaemia in children. The accuracy of copper sulphate densitometry was also compared to clinical assessment for the presence of pallor and haemoglobin measurement with a BMS-haemoglobinometer. Different …
-
The effect of copper sulphate on froth stability
… minerals from unwanted gangue material. Copper sulphate is used as an activator in the flotation of base metal sulphides (BMS) as it promotes interaction of collector molecules with the mineral surfaces. It is also used in certain platinum group minerals (PGM) flotation operations in South …
-
Magnesium sulphate reversal of established bupivacaine electrophysiological cardiotoxicity
… changes in rhythm and conduction which magnesium sulphate reversed. The opportunity therefore exists to explore the possibility of combining magnesium with a positive chronotrophic agent such as dobutamine.
-
Dissolution-crystallisation processes of Ca-Pb-carbonate, Ca-Pb-sulphate and Ca-phosphate-sulphate systems under Earth’s surface and diagenetic conditions.
En esta tesis doctoral se estudian las reacciones de disolución-precipitación que tienen lugar en ambientes de la superficie terrestre y en condiciones diagenéticas, en los sistemas Ca-Pb-carbonato-sulfato, Ca-Pb-Carbonato biogénico y Ca-fosfato-sulfato, con el fin de avanzar en la comprensión de …
-
Passive treatment of acid mine drainage with sulphate reducing bacteria
… bench-scale testing. Biological treatment with sulphate reducing bacteria (SRB) was selected, and bench-scale treatment testing was conducted using columns amended with low cost organic sources. Removal of more than 99% Cd, 93% Co, 96 % Cu, 86% Ni and 98% Zn was observed, resulting in metals …
-
Direct Precipitation of Micron-Size Salbutamol Sulphate by Antisolvent Crystallization
… surfactants and polymeric additives. Salbutamol sulphate (SS) was used as the model drug compound. Several candidate antisolvents were screened via studying particle morphology, particle size and agglomeration of crystal products in order to determine the proper antisolvent used in the subsequent …
-
Time as a factor in the dissociation of calcium sulphate
Calcium sulphate was found to have a dissociation temperature some 60°-90°C. lower than the values reported by other workers.
-
Closing Research Gaps for Cerebral Palsy Prevention and Magnesium Sulphate Neuroprotection
… CP. 4. To assess whether antenatal magnesium sulphate is associated with perinatal death or other adverse neonatal outcomes. Methods: To achieve the above aims, the following methodologies were employed: 1. An overview of Cochrane reviews regarding antenatal and intrapartum interventions for …
-
Experiments on the electrodeposition of copper from dilute copper sulphate solutions
Made available in DSpace on 2017-11-30T22:46:19Z (GMT). No. of bitstreams: 2 5958662.pdf: 2049071 bytes, checksum: daf700f7f69f4730a2ec5bc4434e7600 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1897
-
A mathematical model of a high sulphate wastewater, anaerobic treatment system
High sulphate wastewaters, originating from industrial activity or from the biological oxidation of sulphide ores (acid mine drainage), cannot be discharged into the environment untreated. Apart from the high sulphate levels, these waters may be very acidic and have high dissolved heavy metal …
-
Recovery of nickel from waste copper electrolytes by precipitation with ammonium sulphate
Includes bibliographical references.
-
An integrated geochemical and microbiological investigation of sulphate reduction in hypersaline pans
… were used to derive a holistic picture of sulphate reduction in five hypersaline pans in South Africa. Sulphate reduction rates were determined using a radioactive tracer (35 So/-) technique. This was applied to determination of in situ sulphate reduction rates, the effect of increased …
-
Integrating Microbial Fuel Cells (MFCs) into the treatment of sulphate-rich wastewater
… electricity (Du et al., 2007). The treatment of sulphate-rich wastewater, and in particular Acid Rock Drainage (ARD), has become of increasing importance in water sparse countries like South Africa where mining is currently and has taken place. A semi-passive method of continuous ARD waste …
-
Expression, Purification, And Characterization Of Elastin-Like Polypeptides Containing Chondroitin Sulphate Binding Domains
… the Woodhouse laboratory, as well as chondroitin sulphate-specific binding sequences (CSBD1 and CSBD2) determined by the Panitch laboratory, a new elastin-like polypeptide-chondroitin sulphate binding domain (ELP-CSBD) block copolymer has been developed and characterized. The expression of the …
Page 1 of 27