Assessment of ecotoxicological risks related to depositing dredged materials from canals in northern France on soil

Perrodin, Yves; Babut, Marc; Bedell, Jean-Philippe; Bray, Marc; Clément, Bernard; Delolme, Cécile; Devaux, Alain; Durrieu, Claude; Montuelle, Bernard

doi:10.1016/j.envint.2006.05.003

Cited by 38 publications

(31 citation statements)

References 17 publications

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“…Spreading the dredged sediments on land might be a solution to reverse land subsidence by rising the land surface level (Bramley and Rimmer 1988). The practice of spreading dredged sediments on land has been carried out for many years, and all reported studies about this practice refer to the behaviour of contaminants (Vandecasteele et al 2002;Bedell et al 2003;Ohimain et al 2004;Perrodin et al 2006), without detailed characterization of the properties and behaviour of the sediments.…”

Section: Introductionmentioning

confidence: 99%

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

et al. 2016

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Purpose In delta areas, dense networks of canals have been developed through time and have to be periodically dredged. Lowering the groundwater level in delta areas deepens the aerobic zone, leading to the oxidation of organic matter and possibly to land subsidence. The use of the dredged sediments on land can be a solution to mitigate land subsidence in delta areas. Materials and methods Five types of dredged sediments with different organic matter content and particle size distribution were dewatered for 7 days and then submitted to biochemical ripening during 141 days on a laboratorial scale with constant temperature and relative humidity. The functional properties analysed were the type and content of organic matter, pH, total C, N, P and S, dry bulk density, water retention capacity, aggregate stability and load-bearing capacity. Results and discussion After biochemical ripening, there was no significant loss in the mass of organic matter but there was an increase in the fraction of stable organic compounds, observed by an increase in oxygen-bearing compounds and a decrease in hydrocarbons during biochemical ripening. The pH was not affected by biochemical ripening, and the total C, N, P and S concentrations are high and therefore the dredged sediments can improve the quality of the land. Most volume lost during dewatering and biochemical ripening can be attributed to the loss of water. The water retention capacity of the dredged sediments changed with biochemical ripening. The soils formed from biochemical ripening have very stable aggregates, and its load-bearing capacity is enough to sustain cattle and tractors. Conclusions Most volume lost during dewatering and biochemical ripening can be attributed to the loss of water and not organic matter. Therefore, the studied dredged sediments have potential to mitigate land subsidence in delta areas when spread on land.

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Section: Introductionmentioning

confidence: 99%

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

et al. 2016

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“…The risks of contaminated dredged sediment can be subdivided into three categories: risks for ecosystems, risks for humans and risks for dispersion of contaminants. Risks for ecosystems may arise from uptake, accumulation and effects of contaminants on plants or sediment-dwelling organisms or from impacts on litter decomposition rate and rhizosphere processes (Schüürmann and Markert 1998 Perrodin et al (2006) using a tiered approach with increasing detail in ecotoxicological testing. A review by Tack and Vandecasteele (2008) shows examples of increased hazard due to metal uptake, i.e.…”

Section: Management and Remediation Of Contaminated Sediments And Assmentioning

confidence: 99%

Phytoremediation as a management option for contaminated sediments in tidal marshes, flood control areas and dredged sediment landfill sites

Bert

Seuntjens

Dejonghe

et al. 2009

Environ Sci Pollut Res

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“…(Perrodin et al, 2006), et sur l'évaluation de l'écocompatibilté de scénario de valorisation de déchets minéraux (Perrodin et al, 2000 ;ADEME, 2002).…”

Section: Evaluation Des Risques éCo-toxicologiquesunclassified

Evaluation des Risques Ecotoxicologiques liés à l’épandage de boues de STEP chaulées sur une parcelle agricole

Donguy¹,

Chenon²

2017

Environnement, Ingénierie &Amp; Développement

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Assessment of ecotoxicological risks related to depositing dredged materials from canals in northern France on soil

Cited by 38 publications

References 17 publications

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

Phytoremediation as a management option for contaminated sediments in tidal marshes, flood control areas and dredged sediment landfill sites

Evaluation des Risques Ecotoxicologiques liés à l’épandage de boues de STEP chaulées sur une parcelle agricole

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