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Laboratory modelling of manganese biofiltration using biofilms of Leptothrix discophora

Hope, C.K. and Bott, T.R. (2004) Laboratory modelling of manganese biofiltration using biofilms of Leptothrix discophora. Water Research, 38 (7). pp. 1853-1861. ISSN 0043-1354

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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Cited 7 times in WoS

Abstract

Laboratory biofilters (pilot-scale, 20 l and laboratory-scale, 5 litres) were constructed in order to model the bioaccumulation of manganese (Mn) under flow conditions similar to those occurring in biofilters at groundwater treatment sites. The biofilters were operated as monocultures of Leptothrix discophora, the predominant organism in mature Mn oxidising biofilms. Biologically mediated Mn bioaccumulation was successfully modelled in both filter systems. The data obtained showed that in the small-scale biofilter, the Mn concentrations that gave the highest rate of Mn bioaccumulation, shortest maturation time, highest optical density (biomass) and growth rate were between 2000 and 3000 μg l−1. The non-problematic scale-up of the process from the laboratory-scale to the pilot-scale biofilter model suggests that Mn biofilters may be ‘seeded’ with laboratory grown cultures of L. discophora. By initially operating the biofilter as a re-circulating batch culture, with an initial Mn concentration of 2500 μg l−1, it is hoped to reduce the filter maturation time from months to days.

Item Type:Article
Additional Information:Issue: April 2004 Available online 11 February 2004
Uncontrolled Keywords:LEPTOTHRIX; DISCOPHORA; BIOFILTER; GROUNDWATER; MANGANESE; BIOACCUMULATION; BIOFILM; MICROBIAL CONSORTIA; SAND FILTERS; IRON; OXIDATION; REMOVAL; BACTERIA; PROTEIN; STRAIN; GROWTH; SCALE
Subjects:R Medicine > RK Dentistry
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Medicine > School of Dental Sciences
DOI:10.1016/j.watres.2003.12.031
Refereed:Yes
Status:Published
ID Code:77
Deposited On:29 Apr 2008 13:21
Last Modified:20 May 2011 19:50

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