Leaching Characteristics of Metal Finishing Sludges

by John D.Castaldi Dietz, Radian Corp, Austin, TX, USA,
Christopher M. Cherniak, Radian Corp, Austin, TX, USA,
Barbara J. Hayes, Radian Corp, Austin, TX, USA,

Document Type: Proceeding Paper

Part of: Environmental Engineering


The purpose of this research was to study the feasibility of biodegrading phenolics to methane by thermophilic anaerobic treatment. The study was a feasibility level assessment which examined techniques for culturing thermophilic bacteria, acclimating these microorganisms to phenolics, and assessing toxicity thresholds for simple phenol. The study was conducted with bench-scale test reactors using synthetic substrates composed of phenol, p-cresol, organic acids, and basal salts. Both continuous-feed and batch treatment tests were conducted and treatment performance monitored. These data provide the basis for assessing the feasibility of thermophilic anaerobic biodegradation of phenolics.

Subject Headings: Phenol | Feasibility studies | Anaerobic processes | Biological processes | Wastewater treatment plants | Sludge | Mine wastes

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