Separation of heavy metals from water solutions at the laboratory scale

Pott, Britt-Marie; Mattìasson, Bo

doi:10.1023/b:bile.0000018267.09698.cc

Cited by 21 publications

(10 citation statements)

References 11 publications

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“…Good selectivity can also be reached with some ion exchangers [42], however, this type of processes require further steps to remove the metals from the concentrated waters eluted and their application to high loads is still questionable. Another interesting approach is the use of a redox electrode to selectively precipitate different metal sulfides at different redox potentials [43]. However, this presents a significant drawback when used with real wastewaters, as the fluctuations in concentrations and composition can change the required redox potential for an optimal selectivity.…”

Section: Precipitation Of Cumentioning

confidence: 99%

Selective precipitation of Cu from Zn in a pS controlled continuously stirred tank reactor

Sampaio

Timmers

et al. 2009

Journal of Hazardous Materials

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Section: Precipitation Of Cumentioning

confidence: 99%

Selective precipitation of Cu from Zn in a pS controlled continuously stirred tank reactor

Sampaio

Timmers

et al. 2009

Journal of Hazardous Materials

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“…at the Budelco zinc refinery in the Netherlands; Boonstra et al 1999) andbench-scale (e.g. Tabak &Govind 2003;Tabak et al 2003;Pott & Mattiasson 2004) systems are all ''off line'', to avoid direct contact with acidic liquors. This involves growing SRB in an isolated neutral pH fermenter where hydrogen sulfide is generated, and from there delivered to a second tank (or tanks) where metal sulfides are precipitated.…”

Section: Introductionmentioning

confidence: 99%

Sulfidogenesis in Low pH (3.8–4.2) Media by a Mixed Population of Acidophilic Bacteria

2006

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A defined mixed bacterial culture was established which catalyzed dissimilatory sulfate reduction, using glycerol as electron donor, at pH 3.8-4.2. The bacterial consortium comprised a endospore-forming sulfate reducing bacterium (isolate M1) that had been isolated from acidic sediment in a geothermal area of Montserrat (West Indies) and which had 94% sequence identity (of its 16S rRNA gene) to the Gram-positive neutrophile Desulfosporosinus orientis, and a Gram-negative (non sulfate-reducing) acidophile (isolate PFBC) that shared 99% gene identity with Acidocella aromatica. Whilst M1 was an obligate anaerobe, isolate PFBC, as other Acidocella spp., only grew in pure culture in aerobic media. Analysis of microbial communities, using a combination of total bacterial counts and fluorescent in situ hybridization, confirmed that concurrent growth of both bacteria occurred during sulfidogenesis under strictly anoxic conditions in a pH-controlled fermenter. In pure culture, M1 oxidized glycerol incompletely, producing stoichiometric amounts of acetic acid. In mixed culture with PFBC, however, acetic acid was present only in small concentrations and its occurrence was transient. Since M1 did not oxidize acetic acid, it was inferred that this metabolite was catabolized by Acidocella PFBC which, unlike glycerol, was shown to support the growth of this acidophile under aerobic conditions. In fermenter cultures maintained at pH 3.8-4.2, sulfidogenesis resulted in the removal of soluble zinc (as solid phase ZnS) whilst ferrous iron remained in solution. Potential syntrophic interactions, involving hydrogen transfer between M1 and PFBC, are discussed, as is the potential of sulfidogenesis in acidic liquors for the selective recovery of heavy metals from wastewaters.

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“…Such stepwise precipitation is controlled by changing the redox potential during the precipitation step [109]. Sequential precipitation would make it possible to recycle metal sulfides, thereby reducing but not eliminating the need for exploiting fresh mines.…”

Section: Sulfate Reduction and Heavy Metal Removalmentioning

confidence: 99%

Anaerobes in Industrial- and Environmental Biotechnology

Hatti‐Kaul

Mattìasson

2016

Advances in Biochemical Engineering/Biotechnology

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Anaerobic microorganisms present in diverse ecological niches employ alternative strategies for energy conservation in the absence of oxygen which enables them to play a key role in maintaining the global cycles of carbon, nitrogen, and sulfur, and the breakdown of persistent compounds. Thereby they become useful tools in industrial and environmental biotechnology. Although anaerobes have been relatively neglected in comparison to their aerobic counterparts, with increasing knowledge about their diversity and metabolic potential and the development of genetic tools and process technologies to utilize them, we now see a rapid expansion of their applications in the society. This chapter summarizes some of the developments in the use of anaerobes as tools for biomass valorization, in production of energy carriers and chemicals, wastewater treatment, and the strong potential in soil remediation. The ability of several autotrophic anaerobes to reduce carbon dioxide is attracting growing attention as a means for developing a platform for conversion of waste gases to chemicals, materials, and biofuels.

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Separation of heavy metals from water solutions at the laboratory scale

Cited by 21 publications

References 11 publications

Selective precipitation of Cu from Zn in a pS controlled continuously stirred tank reactor

Selective precipitation of Cu from Zn in a pS controlled continuously stirred tank reactor

Sulfidogenesis in Low pH (3.8–4.2) Media by a Mixed Population of Acidophilic Bacteria

Anaerobes in Industrial- and Environmental Biotechnology

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