Treatment of chlorobenzene-contaminated groundwater in a pilot-scale constructed wetland

Braeckevelt, Mareike; Mirschel, Gabriele; Wießner, Arndt; Rueckert, Michael; Reiche, Nils; Vogt, Carsten; Schultz, Andrea; Paschke, Heidrun; Kuschk, Peter; Kaestner, Matthias

doi:10.1016/j.ecoleng.2008.02.002

Cited by 61 publications

(34 citation statements)

References 29 publications

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“…The removal efficiency for inorganics (Cr, Zn) and organics is higher in planted systems than in unplanted ones independent of the season (Paredes et al 2007). The low removal efficiency of 1,2-dichlorobenzene in comparison to MCB and 1,4-dichlorobenzene and isotope ratio measurements both proved that microbial degradation of MCB was taking place (Braeckevelt et al 2008). The state of the art highlights that generally the choice of the plant is empirical, without accounting for the tolerance variability within a plant species and the role of plant communities.…”

Section: Outcomes At Field Scale From Cost 859mentioning

confidence: 96%

“…The seasonal growth of aquatic macrophytes may result in some limitations to the transfer of phytoremediation technology from the laboratory to the field. For chlorinated benzenes, rates of elimination in winter do not clearly differ from summer in both planted and unplanted wetlands (Braeckevelt et al 2008). Flow type is important as subsurface systems remove more Zn and Cr than surface systems (Paredes et al 2007).…”

Section: Outcomes At Field Scale From Cost 859mentioning

confidence: 96%

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Successes and limitations of phytotechnologies at field scale: outcomes, assessment and outlook from COST Action 859

et al. 2010

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Purpose Many agricultural and brownfield soils are polluted and more have become marginalised due to the introduction of new, risk-based legislation. The European Environment Agency estimates that there are at least 250,000 polluted sites in the member states that require urgent remedial action. There is also significant volumes of wastewaters and dredged polluted sediments. Phytotechnologies potentially offer a cost-effective in situ alternative to conventional technologies for remediation of low to mediumcontaminated matrices, e.g. soils, sediments, tailings, solid wastes and waters. For further development, social and commercial acceptance, there is a clear requirement for upto-date information on successes and failures of these technologies based on evidence from the field. This review reports the outcomes from several integrated experimental attempts to address this at both field and market level in the 29 countries participating in COST Action 859. Results and discussion This review offers insight into the deployment of promising and emergent in situ phytotechnologies, for sustainable remediation and management of contaminated soils and water, that integrative research findings produced between 2004 and 2009 by members of COST Action 859. Many phytotechnologies are at the demonstration level, but relatively few have been applied in practice on large sites. They are not capable of solving all problems. Those options that may prove successful at market level are (a) phytoextraction of metals, As and Se from marginally contaminated agricultural soils, (b) phytoexclusion and phytostabilisation of metal-and AsResponsible editor: Stefan Norra M. Mench (*) UMR BIOGECO INRA 1202, Ecologie des Communautés,contaminated soils, (c) rhizodegradation of organic pollutants and (d) rhizofiltration/rhizodegradation and phytodegradation of organics in constructed wetlands. Each incidence of pollution in an environmental compartment is different and successful sustainable management requires the careful integration of all relevant factors, within the limits set by policy, social acceptance and available finances. Many plant stress factors that are not evident in short-term laboratory experiments can limit the effective deployment of phytotechnologies at field level. The current lack of knowledge on physicochemical and biological mechanisms that underpin phytoremediation, the transfer of contaminants to bioavailable fractions within the matrices, the long-term sustainability and decision support mechanisms are highlighted to identify future R&D priorities that will enable potential end-users to identify particular technologies to meet both statutory and financial requirements. Conclusions Multidisciplinary research teams and a meaningful partnership between stakeholders are primary requirements that determine long-term ecological, ecotoxicological, social and financial sustainability of phytotechnologies and to demonstrate their efficiency for the solution of large-scale pollution problems. The gap between research and develop...

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Section: Outcomes At Field Scale From Cost 859mentioning

confidence: 96%

Section: Outcomes At Field Scale From Cost 859mentioning

confidence: 96%

Successes and limitations of phytotechnologies at field scale: outcomes, assessment and outlook from COST Action 859

et al. 2010

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“…Constructed wetlands (CWs) have proven to be an efficient ecological technology for the treatment of various kinds of contaminated waters (Williams, 2002;Haberl et al, 2003;Kadlec and Wallace, 2008), including domestic and agricultural wastewater (Konnerup et al, 2009;Vymazal and Krö pfelová , 2009), landfill leachate (Bulc, 2006;Yalcuk and Ugurlu, 2009), industrial effluents (Vymazal, 2009) and groundwater contaminated with organic chemicals (Braeckevelt et al, 2008;Seeger et al, 2011a). The use of CWs has been successfully tested in pilot- (Braeckevelt et al, 2011) and field-scale (Ferro et al, 2002;Moore et al, 2002) applications, providing data on overall contaminant removal efficiency on the basis of either concentrations or loads.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of different horizontal subsurface flow wetland types by characterization of flow behavior, mass removal and depth-dependent contaminant load

et al. 2013

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“…In recent years, interest has grown in using phytoremediation processes for the elimination of recalcitrant organic substances from waste and groundwater, including chloroaromatics (Gilbert and Crowley 1997), chlorinated benzenes (Braeckevelt et al 2007(Braeckevelt et al , 2008, dichloroethene (Imfeld et al 2009), or benzene (Tang et al 2009;Guerin 2008). Therefore, more economic in terms of energy consumption and operation costs, these approaches are desirable for groundwater remediation.…”

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confidence: 98%

Fate of Chlorinated Benzenes in Laboratory Peat and Pozzolana Filters

Cottin¹,

Merlin²

2010

Water Air Soil Pollut

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The removal of chlorinated benzenes (CBs) from the compartments and from polluted industrial sites is of great public interest for the decontamination of polluted water and for the protection of the environment. Biological degradation could be considered as a feasible process to eliminate these compounds from the environment as soil or groundwater. A research program in progress since the year 2007 was initiated to investigate the capacity of eco-remediation of CB-contaminated groundwater using a pilot-scale subsurface flow constructed wetland. In order to assess the removal efficiency of these compounds and to evaluate the biological activities, column experiments were performed. The fate of three CBs was investigated by feeding spiked tap water through laboratory columns filled with two different solid-state materials: peat and pozzolana. In order to stimulate biological activity, organic matter coming from aged vertical flow constructed wetland was added to the media.Concentrations of CBs in water effluent and in air and biological activities were monitored during 4 months. At the end of the experimental period, CB concentrations in the depth of columns were determined and a mass balance was calculated for the CBs. Removal efficiencies of the laboratory columns were >98% in the peat columns and situated around 87% to 95% in the pozzolana columns, indicating the suitability of the experimental systems for the removal of CBs. Higher effluent CB concentrations from the pozzolana columns were detected. Concentration of CBs in ambient air indicates that volatilization was low. ATP monitoring, reduction of tetrazolium violet, and exopolysaccharide determination indicated considerable biological activity with variations according to column depth and carrier material.

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Treatment of chlorobenzene-contaminated groundwater in a pilot-scale constructed wetland

Cited by 61 publications

References 29 publications

Successes and limitations of phytotechnologies at field scale: outcomes, assessment and outlook from COST Action 859

Successes and limitations of phytotechnologies at field scale: outcomes, assessment and outlook from COST Action 859

Performance evaluation of different horizontal subsurface flow wetland types by characterization of flow behavior, mass removal and depth-dependent contaminant load

Fate of Chlorinated Benzenes in Laboratory Peat and Pozzolana Filters

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