INSAVALOR

Villeurbanne, France

INSAVALOR

Villeurbanne, France
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Perrodin Y.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | Donguy G.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | Bazin C.,INSAVALOR | Volatier L.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | And 7 more authors.
Science of the Total Environment | Year: 2012

The dredged sediments of polluted seaports now raise complex management problems since it is no longer possible to discharge them into the sea. This results in the need to manage them on land, raising other types of technical, economic and environmental problems. Regarding the technical and economic dimensions, traditional waste treatment methods have proved to be poorly adapted, due to very high costs and low absorbable volumes. In this context, filling quarries in coastal areas with treated sediments could represent an interesting alternative for these materials. Nevertheless, for the environmental dimension, it is necessary to demonstrate that this possibility is harmless to inland ecosystems. Consequently, a specific ecotoxicological risk assessment methodology has been formulated and tested on three sediments taken from seaboards of France, in view to providing an operational and usable tool for the prior validation of any operation to fill quarries with treated seaport sediments. This method incorporates the formulation of a global conceptual model of the scenario studied and the definition of protocols for each of its steps: the characterisation of exposures (based on a simulation of sediment deposit), the characterisation of effects (via the study of sediments ecotoxicity), and the final ecotoxicological risk assessment performed as a calculation of a risk quotient. It includes the implementation in parallel of two types of complementary approach: the "substances" approach derived from the European methodology for assessing new substances placed on the market, and the "matrix" approach which is similar to methods developed in France to assess ecological risks in other domains (waste management, polluted site management, . . .). The application of this dual approach to the three sediments tested led to conclude with reliability that the project to deposit sediments "1" and "2" presented a low risk for the peripheral aquatic ecosystems while sediment "3" presented a high risk. © 2012 Elsevier B.V..


Harpet C.,University of Paris Pantheon Sorbonne | Harpet C.,EHESP School of Public Health | Gully E.,A3i Innovation Enterprise | Blavot C.,University Paris Est Creteil | And 2 more authors.
Progress in Industrial Ecology | Year: 2013

The Chemical Valley in France, a territory composed of various industrial platforms, is facing sustainability challenges. These business parks are located in the vicinity of strategic resources (water networks, pipeline networks). Their organisation allows the pooling of services, equipment and resources. Industrial ecology reveals existing and potential industrial synergies. Environmental management services within companies include facility and employee safety, waste management and effluent treatment; however, they do not develop local trade. The aim of the research conducted on an industrial consortium is to create and strengthen synergies between willing industrial entrepreneurs by testing various decision support tools. The proposed methodology in industrial ecology consists in identifying the various flows, defining collective action strategies, then comparing synergy scenarios using a multi-criteria analysis (acid-base exchange, wastewater sludge valorisation). Copyright © 2013 Inderscience Enterprises Ltd.


Gonzalez-Merchan C.,University of Lyon | Gonzalez-Merchan C.,INSA Lyon | Perrodin Y.,University of Lyon | Sebastian C.,INSA Lyon | And 3 more authors.
Water Science and Technology | Year: 2014

Retention-detention basins are important structures for managing stormwater. However, their long-term operation raises the problem of managing the sediments they accumulate. Potential uses for such sediments have been envisaged, but each sediment must be characterised beforehand to verify its harmlessness. In this paper we address this issue through the development of a battery of bioassays specifically adapted to such sediments. We tested the method on samples taken from four retention basins in the region of Lyon (France). This battery focuses on the toxic effects linked to both the solid phase (ostracod and Microtox® solid-phase tests) and the liquid-phase (interstitial water) of sediments (rotifer and Microtox® liquid-phase tests). The results obtained permit the sorting of sediments presenting little toxicity, and which could therefore be potentially exploitable, from those from more polluted areas presenting higher toxicity that limits their use. © IWA Publishing 2014.


Becouze-Lareure C.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | Thiebaud L.,CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory | Bazin C.,INSAVALOR | Namour P.,CNRS Institute of Analytical Sciences | And 3 more authors.
Science of the Total Environment | Year: 2016

Combined Sewer Overflows (CSO) in small peri-urban streams and rivers are potentially toxic for their biocenosis. Improving the management of CSO discharges requires better knowledge of their dynamics and toxicity. In view to characterizing this toxicity, we sampled the different compartments (benthic and hyporheic zone) of a peri-urban stream located near the city of Lyon in France. The samples were taken at different distances from a CSO and at three period characteristic of different hydrological conditions. Their toxic effects were assessed by bioassays on the dissolved fraction (D. magna, V. fisheri and B. calyciflorus bioassays) and on the particle fraction (V. fisheri and H. incongruens bioassays). The results highlighted significant toxicity of the particulate fraction for the benthic and hyporheic samples, in particular downstream of the CSO, but with high spatio-temporal variability. This variability can first be attributed to the variability of CSO discharge sampling as a function of season and rainfall, and the dynamics of polluted particles (trapping of transported particles in infiltration zones, mobilization during floods). These parameters play a fundamental role in the distribution of pollutants according to the geomorphology of stream facies. Regarding dissolved pollutants, the chemical exchanges taking place at the "water-sediment" interface trigger the transfer of pollutants from one phase to another, after which the dispersion of these pollutants is governed by hydraulic flows. Finally, critical zones and periods are identified for the peri-urban river toxicity studied: benthic sediments under mean flow downstream; hyporheic sediments after a storm event downstream, close to the CSO. Recommendations are made on the basis of the knowledge obtained to optimize the management of these discharges. © 2015 Elsevier B.V.


Perrodin Y.,University of Lyon | Volatier L.,University of Lyon | Bazin C.,INSAVALOR | Boisson J.-C.,University of Lyon
Environmental Science and Pollution Research | Year: 2013

Discharges of saline effluents into rivers can lead to risks for local aquatic ecosystems. A specific ecological risk assessment methodology has been developed to propose a management tool to organisations responsible for managing rivers and industrial companies producing saline effluents. This methodology involves the detailed description of the spatiotemporal system concerned, the choice of ecological targets to be preserved, and the performance of bioassays adapted to each of the compartments of the river. Following development, it was applied to an industrial effluent in eastern France. For the scenario studied, results obtained suggest a high risk for the organisms of the water column and a low risk for the organisms of the periphyton. This difference can be explained by the structure of the latter which integrate extracellular polymers secreted by the organisms of the biofilm, forming a gel with a porous structure that acts as a barrier to diffusion. The methodology formulated permitted identifying the critical points of the spatiotemporal system studied and then using them as the basis for making well-grounded proposals for management. Lastly, proposals to improve the methodology itself are made, especially concerning the integration of the sediment compartment in the version formulated initially. © 2012 Springer-Verlag.


Angerville R.,University of Lyon | Angerville R.,Quisqueya University | Perrodin Y.,University of Lyon | Bazin C.,INSAVALOR | Emmanuel E.,Quisqueya University
International Journal of Environmental Research and Public Health | Year: 2013

Discharges of Combined Sewer Overflows (CSOs) into periurban rivers present risks for the concerned aquatic ecosystems. In this work, a specific ecotoxicological risk assessment methodology has been developed as management tool to municipalities equipped with CSOs. This methodology comprises a detailed description of the spatiotemporal system involved, the choice of ecological targets to be preserved, and carrying out bioassays adapted to each compartment of the river receiving CSOs. Once formulated, this methodology was applied to a river flowing through the outskirts of the city of Lyon in France. The results obtained for the scenario studied showed a moderate risk for organisms of the water column and a major risk for organisms of the benthic and hyporheic zones of the river. The methodology enabled identifying the critical points of the spatio-temporal systems studied, and then making proposals for improving the management of CSOs. © 2013 by the authors; licensee MDPI, Basel, Switzerland.


Merchan C.G.,University of Lyon | Merchan C.G.,INSA Lyon | Perrodin Y.,University of Lyon | Barraud S.,INSA Lyon | And 4 more authors.
Environmental Science and Pollution Research | Year: 2014

Detention basins are valuable facilities for urban storm water management, from both the standpoint of flood control and the trapping of pollutants. Studies performed on storm water have shown that suspended solids often constitute the main vector of pollutants (heavy metals, polycyclic aromatic hydrocarbon (PAH), etc.). In order to characterise the ecotoxicity of urban sediments from storm water detention basins, the sediments accumulated over a 6-year period were sampled at five different points through the surface of a large detention basin localised in the east of Lyon, France. A specific ecotoxicological test battery was implemented on the solid phase (raw sediment) and the liquid phase (interstitial water of sediments). The results of the study validated the method formulated for the ecotoxicological characterization of urban sediments. They show that the ecotoxicological effect of the sediments over the basin is heterogeneous and greater in areas often flooded. They also show the relationship between, on one hand, the physical and chemical characteristics of the sediments and, on the other hand, their ecotoxicity. Lastly, they contribute to a better understanding of the dynamics of the pollution close to the bottom of detention basins, which can be useful for improving their design. The results of this research raise particularly the issue of using oil separators on the surface of detention basins. © 2013 Springer-Verlag Berlin Heidelberg.


Patent
Airbus, INSA Toulouse and Insavalor | Date: 2014-10-28

A composite material for manufacturing a device for containment of a cryogenic liquid and a device for containment of a cryogenic liquid which comprises at least one layer made of this composite material. The composite material is obtained from a composition comprising, in percentages by weight relative to the total weight of the composition: from 60% to 90% of a polyamide chosen from polyamides 6, 6.6 and 6/6.6 and mixtures thereof; from 10% to 30% of a primary synthetic graphite in the form of particles; and from 0% to 10% of an anti-oxidant. Applications: manufacture of cryogenic tanks and notably liquid oxygen tanks, particularly for a space launcher, manufacture of supply lines of cryogenic liquids and particularly liquid oxygen; manufacture of any device for the storage, transport and/or supply of a gas under pressure.


PubMed | INSAVALOR, CNRS Institute of Analytical Sciences, IRSTEA and CNRS Ecology of Natural and Anthropized Hydrosystems Laboratory
Type: | Journal: The Science of the total environment | Year: 2015

Combined Sewer Overflows (CSO) in small peri-urban streams and rivers are potentially toxic for their biocenosis. Improving the management of CSO discharges requires better knowledge of their dynamics and toxicity. In view to characterizing this toxicity, we sampled the different compartments (benthic and hyporheic zone) of a peri-urban stream located near the city of Lyon in France. The samples were taken at different distances from a CSO and at three period characteristic of different hydrological conditions. Their toxic effects were assessed by bioassays on the dissolved fraction (D. magna, V. fisheri and B. calyciflorus bioassays) and on the particle fraction (V. fisheri and H. incongruens bioassays). The results highlighted significant toxicity of the particulate fraction for the benthic and hyporheic samples, in particular downstream of the CSO, but with high spatio-temporal variability. This variability can first be attributed to the variability of CSO discharge sampling as a function of season and rainfall, and the dynamics of polluted particles (trapping of transported particles in infiltration zones, mobilization during floods). These parameters play a fundamental role in the distribution of pollutants according to the geomorphology of stream facies. Regarding dissolved pollutants, the chemical exchanges taking place at the water-sediment interface trigger the transfer of pollutants from one phase to another, after which the dispersion of these pollutants is governed by hydraulic flows. Finally, critical zones and periods are identified for the peri-urban river toxicity studied: benthic sediments under mean flow downstream; hyporheic sediments after a storm event downstream, close to the CSO. Recommendations are made on the basis of the knowledge obtained to optimize the management of these discharges.

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