Results 201 to 210 of about 1,362,804 (251)
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Humic acid promotes arsenopyrite bio-oxidation and arsenic immobilization
Journal of Hazardous Materials, 2020The bio-oxidative dissolution of arsenopyrite, the most severe arsenic contamination source, can be mediated by organic substances, but pertinent studies on this subject are scarce. In this study, the bio-oxidative dissolution of arsenopyrite by Sulfobacillus thermosulfidooxidans and arsenic immobilization were evaluated in the presence of humic acid ...
Jinlan Xia, Lei Zheng, Hongchang Liu
exaly +3 more sources
Thiocyanate Bio-oxidation Kinetics
Journal of the Environmental Engineering Division, 1981Thiocyanates have been found in most coal conversion and coke plant effluents. Data were developed for the biological degradation rate kinetics of thiocyanate removal, and material balance information was developed for the fate of sulfur and nitrogen resulting from such bio-decomposition of aqueous thiocyanates.
Ronald D. Neufeld, L. Mattson, P. Lubon
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Kinetics of bio‐oxidation of metal sulphides
The Canadian Journal of Chemical Engineering, 1974AbstractThe microbiological oxidation of cadmium, cobalt, nickel and zinc sulphides has been investigated using a pure strain of Thiobacillus ferrooxidans. Kinetic parameters (Vm and K) have been derived regarding the effect of initial total surface area of these substrates.
A. E. Torma +3 more
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Bio‐oxidation of linoleic acid via methylmalonyl‐CoA
Lipids, 1969AbstractUnsaturated long‐chain fatty acids are oxidized more rapidly than are saturated fatty acids of similar chain length in intact animals and isolated mitochondria. Gamma‐oxidation of the 3‐dodecenoic acid intermediate in beta‐oxidation of oleate would yield propionate which is metabolized via methylmalonate.14C‐labeled fatty acids were ...
J, Dupont, M M, Mathias
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Bio-oxidation of tripropylene glycol under aerobic conditions
Biodegradation, 2007Aerobic biodegradation of tripropylene glycol (PG3) was investigated under the conditions of the OECD screening test 301E and the Continuous Flow Activated Sludge Simulation test (CFAS). A modified two-chamber facility with a denitrification stage was used for the CFAS test.
Agnieszka, Zgoła-Grześkowiak +5 more
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Bio-oxidation of iron using Thiobacillus ferrooxidans
World Journal of Microbiology and Biotechnology, 1997The effects of pH, ferrous and ferric ion concentrations on iron oxidation by Thiobacillus ferrooxidans were examined. The initial temperature and bacterial concentration were maintained at 37°C and 2±1×104cells/ml, respectively. The iron oxidation rate increased with increased initial ferrous iron concentration to 4g/l and thereafter decreased.
T. Das +2 more
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Role of hydrolyzed rice husk in pyrite bio-oxidation
Geochemistry, 2021Abstract This work seeks to understand the role of hydrolyzed rice husk in pyrite bio-oxidation. Solution parameters during the bio-oxidation process were monitored, and the bio-oxidation residues were characterized by Scanning Electron Microscopy, Raman Spectroscopy, and Fourier Transform Infrared Spectroscopy.
Hongying Yang +5 more
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Bio-oxidation of galena particles by Acidithiobacillus ferrooxidans
Particuology, 2008Abstract This paper deals with the bio-oxidation of galena particles (−80 meshes) using Acidithiobacillus ferrooxidans and compares it with Fe3+ oxidation. Experimental results show that, at least, 0.00197 mol galena was leached from 100 mL pulp (density of 3.8%) with 39 days’ bio-oxidation, as compared to 0.00329 mol galena by Fe3+ with 9 days ...
Lei Jiang +3 more
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Tools for characterizing the whole‐cell bio‐oxidation of alkanes at microscale
Biotechnology and Bioengineering, 2012AbstractThis article describes the first reported microwell whole‐cell bioconversion using a water immiscible substrate that matches the specific activity and yield achieved in a 1.2 L stirred tank bioreactor. Maximum yields of 0.6 g/Ltotal 1‐dodecanol achieved in 24 h compare favorably to 0.28 g/Ltotal 1‐dodecanol after 48 h obtained in a stirred tank
Chris, Grant +4 more
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Aerobic Bio-oxidation with Ozonation for Recalcitrant Wastewater Treatment
Journal of Advanced Oxidation Technologies, 2008AbstractThe aim of the present research was to find a combination of biological and chemical oxidation processes that improves the purification efficiency of recalcitrant wastewater treatment at reduced ozone consumption. The following wastewater treatment processes were experimentally studied: conventional aerobic biooxidation, post-ozonation of ...
Inna Kamenev +2 more
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