identification of inhibitory substances affecting bioleaching of heavy metals from anaerobically digested sewage sludge.significant inhibitory effects of the filtrate medium of anaerobically digested sewage sludge on iron oxidation by acidithiobacillus ferrooxidans anyl-1 were observed in our preliminary experiments, indicating the presence of inhibitory substances in anaerobically digested sewage sludge. the objectives of the present study were to identify the possible inhibitory substances and to evaluate their impacts on metal solubilization during bioleaching of sewage sludge. the results showed that the conc ...200415212270
degradation of inhibitory substances in sludge by galactomyces sp. z3 and the role of its extracellular polymeric substances in improving bioleaching.this study sought to elucidate the effect and mechanism of galactomyces sp. z3 in improving the bioleaching of heavy metals from sludge. results showed that co-inoculation of galactomyces sp. z3 and two acidithiobacillus strains (acidithiobacillus ferrooxidans lx5 and acidithiobacillus thiooxidans ts6) reduced the period required for sludge bioleaching by 4.5days compared to acidithiobacillus alone. further, removal efficiencies of cu, zn and oxidation rate of fe(2+) and s(0) were higher in co-i ...201323411451
enhanced heavy metal bioleaching efficiencies from anaerobically digested sewage sludge with coinoculation of acidithiobacillus ferrooxidans anyl-1 and blastoschizomyces capitatus y5.prolonged bioleaching period was required to remove heavy metals from anaerobically digested sewage sludge in the presence of low molecular weight organic acids. the purpose of the present study was therefore to enhance metal solubilization efficiencies through introducing organic acid-degrading microorganisms into this artificial bioleaching system. an acetic and propionic acid-degrading yeast blastoschizomyces capitatus y5 was successfully isolated from a local yuen long sewage sludge and it c ...200415580998
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