Abstract: Twenty‐three different sewage sludges were studied to adapt indigenous sulfur‐oxidizing microflora to solubilize a substantial part of trace metals from the sludges. The results showed that the oxidation of elemental sulfur ...

Abstract: The effect of solids retention time (SRT) on chemical oxygen demand (COD) degradation and nutrients removal was studied in a sequencing batch reactor (SBR). SRT of 10, 15, 20, 25, and 30 days was studied. A laboratory ...

Abstract: Seventy-four bacterial isolates were recovered from 10 protein rich soil and water samples collected from Quebec City. On the basis of colony size, texture, and microscopic characteristics, the isolates were categorized ...

Abstract: An advanced operational strategy was developed in this study for a batch microbial leaching process, employing sulfur oxidation for heavy metal removal from sewage sludge, to terminate the batch operation at its best moment. ...

Abstract: An investigation on the effect of sludge solids concentration on bioleaching of Cr(III) and other metals from tannery sludge by indigenous sulphur-oxidizing bacteria was carried out. The sludge solids concentrations ranged ...

Abstract: Bench scale fermentation of primary, mixed, and secondary (raw and hydrolyzed) sludge and starch industry wastewater was carried out using

Abstract: The agricultural use of sewage sludge is limited by the presence of toxic metals and pathogens. The simultaneous sludge digestion and metal leaching (SSDML) process has been developed to resolve this problem. In the present ...

Abstract: High concentrations of Al, Fe, Ca, Mg, and Zn in the tanning agent are detrimental to the properties of tanned leather. To recycle the Cr(III) from the tannery sludge to the tanning agent, these five metals must be removed ...