Simultaneous microbial removal of sulphate and heavy metals from waste water

Barnes, L.J.; Sherren, J.; Janssen, F.J.J.G.; Scheeren, P.J.H.; Versteegh, J. H.; Koch, R. O.

doi:10.1007/978-94-011-3684-6_43

Cited by 22 publications

(14 citation statements)

References 21 publications

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“…One process used sulfur-and iron-oxidizing bacteria to liberate metals from soils in the form of an acidic sulfate solution that enabled almost all the metals to be removed by bacterial sulfate reduction . Largescale commercial bioreactors have in fact been developed using bacterial sulfate reduction for treating metalcontaminated waters (Barnes et al, 1992;Gadd, 1992b; http://www.paques.nl/).…”

Section: Bioprecipitationmentioning

confidence: 99%

Metals, minerals and microbes: geomicrobiology and bioremediation

2010

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Microbes play key geoactive roles in the biosphere, particularly in the areas of element biotransformations and biogeochemical cycling, metal and mineral transformations, decomposition, bioweathering, and soil and sediment formation. All kinds of microbes, including prokaryotes and eukaryotes and their symbiotic associations with each other and 'higher organisms', can contribute actively to geological phenomena, and central to many such geomicrobial processes are transformations of metals and minerals. Microbes have a variety of properties that can effect changes in metal speciation, toxicity and mobility, as well as mineral formation or mineral dissolution or deterioration. Such mechanisms are important components of natural biogeochemical cycles for metals as well as associated elements in biomass, soil, rocks and minerals, e.g. sulfur and phosphorus, and metalloids, actinides and metal radionuclides. Apart from being important in natural biosphere processes, metal and mineral transformations can have beneficial or detrimental consequences in a human context. Bioremediation is the application of biological systems to the clean-up of organic and inorganic pollution, with bacteria and fungi being the most important organisms for reclamation, immobilization or detoxification of metallic and radionuclide pollutants. Some biominerals or metallic elements deposited by microbes have catalytic and other properties in nanoparticle, crystalline or colloidal forms, and these are relevant to the development of novel biomaterials for technological and antimicrobial purposes. On the negative side, metal and mineral transformations by microbes may result in spoilage and destruction of natural and synthetic materials, rock and mineral-based building materials (e.g. concrete), acid mine drainage and associated metal pollution, biocorrosion of metals, alloys and related substances, and adverse effects on radionuclide speciation, mobility and containment, all with immense social and economic consequences. The ubiquity and importance of microbes in biosphere processes make geomicrobiology one of the most important concepts within microbiology, and one requiring an interdisciplinary approach to define environmental and applied significance and underpin exploitation in biotechnology. Microbes as geoactive agentsMicrobes interact with metals and minerals in natural and synthetic environments, altering their physical and chemical state, with metals and minerals also able to affect microbial growth, activity and survival. In addition, many minerals are biogenic in origin, and the formation of such biominerals is of global geological and industrial significance, as well as providing important structural components for many organisms, including important microbial groups such as diatoms, foraminifera and radiolaria (Ehrlich, 1996;Gadd & Raven, 2010). Geomicrobiology can simply be defined as the roles of microbes in geological processes (Banfield & Nealson, 1997;Banfield et al., 2005; Konhauser, 2007;Ehrlich & Newman, 2009). Metalminera...

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Section: Bioprecipitationmentioning

confidence: 99%

Metals, minerals and microbes: geomicrobiology and bioremediation

2010

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“…While only a few full scale plants treating high sulphate streams exist (Colleran et al, 1994;Scheeren et al, 1992;Barnes et al, 1992), numerous laboratory and pilot plant studies have been done. have been shown to be suitable for sulphate reduction.…”

Section: Overview Of Existing and Emerging Treatment Technologiesmentioning

confidence: 99%

A mathematical model of a high sulphate wastewater anaerobic treatment system

Knobel

Lewis

2002

Water Research

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“…Metals can be removed from wastes upstream by biosorption (Volesky, 1990) or can be precipitated via ligands produced as a result of microbial activity. One example (Barnes et al, 1991(Barnes et al, , 1992 utilizes H,S produced from the metabolic activity of sulphate-reducing bacteria (SRB) to precipitate metals as cell-bound metal sulphides. H,S production is mandatory ; in the absence of this the SRB are metal-sensitive (Postgate, 1979).…”

Section: Introductionmentioning

confidence: 99%

Localization of enzymically enhanced heavy metal accumulation by Citrobacter sp. and metal accumulation in vitro by liposomes containing entrapped enzyme

et al. 1997

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A heavy-metal-accumulating Citrobacter sp. has been used for the treatment of metal-laden industrial wastes. Metal uptake is mediated via a cell-bound phosphatase that liberates inorganic phosphate which precipitates with heavy metals as cell-bound metal phosphate. A phosphatase-def icient mutant accumulated little UOf+, while a phosphatase-overproducing mutant accumulated correspondingly more metal, with a uranium loading equivalent to the bacterial dry weight achieved after 6 h exposure of resting cells to uranyl ion in the presence of phosphatase substrate (glycerol 2-phosphate). The phosphatase, visualized by immunogold labelling in the parent and overproducing strains, but not seen in the deficient mutant, was held within the periplasmic space with, in some cells, a higher concentration at the polar regions. Enzyme was also associated with the outer membrane and found extracellularly. Accumulated uranyl phosphate was visible as cell-surface-and polar-localized deposits, identified by energy-dispersive X-ray analysis (EDAX), proton-induced X-ray emission analysis (PIXE) and X-ray diffraction analysis (XRD) as polycrystalline HUO,PO,AH,O. Nucleation sites for initiation of biocrystallization were identified at the cytoplasmic and outer membranes, prompting consideration of an in vitro biocatalytic system for metal waste remediation. Phosphatidylcholine-based liposomes with entrapped phosphatase released phosphate comparably to whole cells, as shown by 31P NMR spectroscopy in the presence of NMR-silent ' 'l2Cd2+. Application of liposome-immobilized enzyme to the decontamination of uranyl solutions was, however, limited by rapid fouling of the biocatalyst by deposited uranyl phosphate. It is suggested that the architecture of the bacterial cell surface provides a means of access of uranyl ion to the inner and outer membranes and enzymically liberated phosphate in a way that minimizes fouling in whole cells.

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Simultaneous microbial removal of sulphate and heavy metals from waste water

Cited by 22 publications

References 21 publications

Metals, minerals and microbes: geomicrobiology and bioremediation

Metals, minerals and microbes: geomicrobiology and bioremediation

A mathematical model of a high sulphate wastewater anaerobic treatment system

Localization of enzymically enhanced heavy metal accumulation by Citrobacter sp. and metal accumulation in vitro by liposomes containing entrapped enzyme

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