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. The principles of the use of a highly hydrophobic and negatively charged bacterium, Mycobacterium phlei, as a flocculating-flotating agent for finely divided hematite were investigated. The flocculating-floating recovery is strongly dependent on the pH and the dosage of the bacterium. Generally the pH should be controlled over the range of 5.5-7, and the dosage should be controlled about 16 mg/L......
from corrosion in a multi-species bacterial environment via synergistic biomineralization. The marine bacterium Pseudoalteromonas lipolytica mixed with Bacillus subtilis or Pseudomonas aeruginosa... and protective than that induced by a single bacterium. Herein,we found that the synergistic mechanisms were rather different for the different bacterial groups. For Pseudoalteromonas lipolytica......
conditions Acidianus copahuensis strain ALE1 DSM 29038 [15] was cultured in flasks containing Medium 88 basal salt solution (M88) which is a selective medium for thermophilic, acidophilic archaea recommended... concentrate using a mixed culture of iron- and sulfur- oxidizing moderately thermophilic microorganisms when they compared the results in experiments with different initial pH values. However, the lowest pH......
makes their microbiologically influenced corrosion study a timely matter.This work demonstrated that the corrosion ofTi-6 Al-4 V alloy was accelerated by a marine bacterium Shewanella algae in 2216 E......
]. Scientia Iranica, 2007, 14(2): 180-184. [50] MARHUAL N P, PRADHAN N, KAR R N, SUKLA L B, MISHRA B. Differential bioleaching of copper by mesophilic and moderately thermophilic acidophilic... by these bacteria adsorbed onto the surface. One rough classification sorts these organisms according to their optimum growth temperature: mesophilic (<40°C), moderately thermophilic (40-55°C) and extremely......
. A number of acidophilic thermophiles were isolated and a moderately thermophilic ferrous iron and sulphur oxidizing strain (YN22, DQ650351) has been identified as Sulfobacillus thermosulfidooxidans... and improving metal recovery. 2 Experimental 2.1 Microorganism The moderately thermophilic acidophilic strain YN22 of S. thermosulfidooxidans used in this study was originally isolated from......
with moderately thermophilic microorganisms [3]. This is because using moderate thermophiles compared with mesophiles to bioleach chalcopyrite can greatly improve the leaching reaction kinetics, hence, the total... enriched at 48 °C and pH 2.0. After adaptation to chalcopyrite concentrate for more than 4 years, this moderately thermophilic culture showed excellent performance of chalcopyrite dissolution. Previous......
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bioleaching mechanism at low and high temperature [J]. Hydrometallurgy, 2003, 71(1): 47-56. [2] ZHOU H B, ZENG W M, YANG Z F. Bioleaching of chalcopyrite concentrate by a moderately thermophilic culture...]. Hydrometallurgy, 2008, 93(1): 81-87. [4] QIU M Q, XIONG S Y, ZHANG W M. Efficacy of chalcopyrite bioleaching using a pure and a mixed bacterium [J]. Mineral, 2006, 13(1): 7-10. [5] XIAO L, LIU J S, FANG Z, QIU......
, Staphylococcus aureus and Bacillus subtilis are used as model bacterium respectively, while antifungal percentage of the glaze exceeds 95% when Penicillum citrinum is used as model fungus.关键词:......
