Bachelor Thesis
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Item ARSENIC MONITORING IN NALAIKH’S SURFACE WATERS PARTICULAR “BUS NUUR” LAKE(GMIT, 2018) Sainsanaa Amarsanaa; Martin Knippertz; Daniel Karthe; Ariuntuya TserendorjNalaikh is located in Ulaanbaatar, Mongolia, known for illegal mining activity. Earlier investigations concerned mining land disturbance and pointed on air, soil and importantly water. Which revealed in unexpected arsenic, which is a highly toxic element, exposure in the Bus Lake. The research is aimed to find seasonal and weather changes of the Bus Lake characteristics and indicating level of toxicity.Item Copper ore Leaching with alternative agents(GMIT, 2020) Galsanjamts Otgonbaatar; Bayanmunkh Myagmarsuren; Ariuntuya Tserendorj; Ochirbat PurevjavIn copper processing, copper bearing sulfide minerals in porphyry deposit that can be efficiently processed by the froth-flotation cells then recovered by smelter. Copper mainly occurs in porphyry deposit with gold, silver and molybdenum. Most currently, research interest has moved to the processing low-grade, oxidized, complex ore bodies and flotation tail from copper processing that contains impurities including silica, iron, arsenic which forms the crud which negatively influence downstream processes like solvent extraction of hydrometallurgical plant. The conventional sulfuric acid for leaching low-grade copper oxidized ores is inefficient in the treatment of the proposed ore contains gangue metals and minerals like iron, silica, aluminum and carbonates results in increased reagent consumption and increased operating costs. In addition to these technical challenges, the use of sulfuric acid impacts on environment negatively including vaporization and contamination of ground water.Item DISSOLVED OXYGEN AND BOD ASSIMILATIVE CAPACITY OF THE SELBE RIVER(GMIT, 2023) Bodigerel Lkhagvasuren; Ariuntuya Tserendorj; Ariunaa SaraadanbazarMongolia is a landlocked country in Central Asia with a land area of 1’564’116 square km that shares borders with both China and Russia to the north and south, respectively. The total surface water source in Mongolia is around 599 𝑘𝑚3 , about 0.00004% of the world’s total water resource. 83.7% of it is accumulated in lakes, 10.5% in glaciers, and 5.8% in river and river systems. (1) Water source in Mongolia is limited and unevenly distributed throughout the whole country, most of the surface water sources are located in Northern Mongolia, as for the Gobi Desert zone majority of the water source is from groundwater.Item Leaching of the copper mineralbearing ore(GMIT, 2023) Dulguun Munkhochir; Bayanmunkh Myagmarsuren; Ariuntuya TserendorjHydrometallurgy has become a key process in the production of copper, accounting for more than 30% of global copper production. In the leaching process of oxidized copper ore, dilute sulfuric acid has traditionally been used as the leaching agent. The use of sulfuric acid has certain drawbacks, including environmental concerns and the requirement for high energy input during processing. Therefore, researchers have been investigating alternative leaching agents to improve the efficiency of the process while minimizing its impact on the environmentItem The Investigation of Settling Processes for Tailing Thickener in Oyu Tolgoi(GMIT, 2020) Otgonzul Bat-Erdene; Ariuntuya Tserendorj; Battulga Nasanjargal; Renchinsambuu GanzamThis bachelor thesis based on the research work of Oyu Tolgoi (OT) LLC that OT concentrator’s tailing thickener laundry for overflow water pipe scaling problem. OT concentrator plant is reused the overflow water from the tailings thickener and its recycling rate is at least 80 %.