Kinetic comparison of microbial assemblages for the anaerobic treatment of wastewater with high sulfate and heavy metal contents

Document Type

Article

Publication Date

1-1-2009

Abstract

Mixed-microbial assemblages enriched from a septic tank, coastal sediment samples, the digester sludge of a brewery wastewater treatment plant and acidic sulfate soil samples were compared on the basis of growth rate, waste and sulfate reduction rate under sulfate reducing conditions at 30°C. The specific growth rate of various cultures was in the range 0.0013-0.0022 hr1. Estimates of waste and sulfate reduction rate were obtained by fitting substrate depletion and sulfate reduction data with the Michaelis-Menten equation. The waste reduction rates were in the range 4×10-8-1×10-7 l mg-1 hr-1 and generally increased in the presence of copper, likely by copper sulfide precipitation that reduced sulfide and copper toxicity and thus protected the anaerobic microbes. Anaerobic microorganisms from a brewery digester sludge were found to be the most appropriate culture for the treatment of wastewater with high sulfate and heavy metal content due to their growth rate, and waste and sulfate reduction rate. © Triveni Enterprises, Lucknow (India).

Identifier

59349088316 (Scopus)

Publication Title

Journal of Environmental Biology

ISSN

02548704

PubMed ID

20112857

First Page

11

Last Page

15

Issue

1

Volume

30

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