Results 211 to 220 of about 1,362,804 (251)
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Procedure for determination of elemental sulphur bio-oxidation rate
Bioprocess Engineering, 1989A procedure is described for measuring the rate of biooxidation of elemental sulphur in nutrient solutions. Results of preliminary measurements of sulphur bio-oxidation rate in a dynamic system are presented. The rate of sulphur bio-oxidation has been determined at the level of 0.02–0.05 g of sulphur per m2 of sulphur per h.
A. Urbanek, S. Razmadhan, M. Jaworska
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Development of a large industrial bio-oxidation reactor in hydrometallurgy
International Journal of Mineral Processing, 2015Abstract In this paper, the characteristics of the bio-oxidation process are investigated and the design principles of an efficient bio-oxidation reactor are proposed based on the large number of laboratory tests. Methods, such as increasing the height of tank to improve dissolved oxygen content and adding affiliate aeration system to reduce the ...
Zhengchang Shen +3 more
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Aerobic bio‐oxidation of post‐anaerobic tannery effluents
International Journal of Environmental Studies, 1993Wastewater generated from an industrial estate accommodating chrome as well as vegetable tanneries has a significant pollution potential with COD ranging from as low as 2000 mg/L to as high as 10,000 mg/L. This medium strength wastewater, if segregated from soak liquor and subjected to chromium removal/recovery, can very well be treated anaerobically ...
T. Nandy, S.N. Kaul, R. A. Daryapurkar
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Review on the Bio-oxidation of Pyrite: Implications for the Mining Industry
2020Pyrite (FeS2) is the most abundant and widely spread iron-containing sulfide mineral in the earth, and it is also an important source of sulfuric acid (H2SO4) and is commonly associated with the other valuable minerals as gangue mineral. Hence, it cannot be ignored in the modern industry, especially in the mining industry. Bio-oxidation of pyrite is an
Xin Lv +6 more
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Bio-oxidation of minerals in air-lift loop bioreactors
International Journal of Mineral Processing, 2001Abstract The high rate bio-oxidation of minerals in tanks has received a great deal of interest over the last decades. So far, aerated stirred tank reactors, which are common in the mining industry, have been used for these processes. However, as we are dealing with a biological system, it makes sense to apply reactor types that are especially ...
R. Ruitenberg +2 more
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Studies on bio-oxidation of coal mine gas by a biofilter
Journal of Coal Science and Engineering (China), 2010A new biofilter technology was used to control the methane concentration in the coal mine. The results indicate that the biofilter achieves a steady methane removal capacity of 1 470 mg/(L·h) after 30 days start-up. More than 90% of the methane can be removed with an empty bed retention time (EBRT) of 5.6 min when the inlet concentration of methane ...
Hai-xia Yu, Hang Min, Zhen-mei Lü
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Influence of poisonous gases on the bio-oxidation of coalmine gas
International Journal of Mining, Reclamation and Environment, 2009Carbon monoxide (CO), hydrogen sulphide (H2S) and sulphur dioxide (SO2), which commonly appear and mix in coalmine gas, were investigated in terms of their effects on methane oxidation of methanotroph systems using single-factor and multi-factor experiments.
H. X. Yu, H. Min, Z. M. Lv, J. Liu
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Surface Characteristic of Pyrrhotite Bio-Oxidized by Acidithiobacillus Ferrooxidans
Advanced Materials Research, 2011This paper deals with the surface characteristic of pyrrhotite bio-oxidized byAcidithiobacillus ferrooxidans. Large amounts of jarosite and element sulfur were determined in the bio-oxidation processe of pyrrhotite. More complicatedly, biofilm exists on the surface of pyrrhotite. This type of structured community ofA.
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