NDLI: Environmental Quality Assessment for Valorization of Raw and Desalinated Dredged Marine Sediment Contaminated by Potentially Toxic Elements

Content Provider	Springer Nature Link
Author	Achard, R. Benard, A. Merdy, P. Durrieu, G. Poupon, C. Campredon, B. Lucas, Y.
Copyright Year	2013
Abstract	Within the framework of evaluating the long-term management of contaminated dredged sediments, we studied the mobility of inorganic contaminants contained marine sediment submitted to desalination and to leaching in an outdoor lysimeter. A set of complementary analytical techniques were used: mineral and textural analysis; simple selective extractions; sequential selective extractions; acid neutralization capacity tests and percolation dynamic leaching tests, using standardized procedures. The raw sediment presented a critical concentration of As, Hg and soluble salts compared to most European sediment quality guidelines (SQGs). Desalination allowed the leaching of soluble salts without significant leaching of most potentially toxic elements (PTEs), but greatly enhanced the mobility of Mo. Five months outdoor storage with natural cycles of wetting and drying increased the fraction bound to organic matter (OM) or sulfides of Cu, Pb, Cd, Mo, As and Pb. Cu and As mobility appeared highly related to OM dynamics. Na, Cl, B and Mo appeared highly mobile, but Mo release was lower at pH < 5. Zn, Pb, Mn, Al, Ni and Cr had behavior characteristic of species adsorbed on mineral oxides surfaces, being highly leachable at acid pH. Colloidal transport was significant for DOC, As, Ni and Co and was the main process for Pb. Drying the sediment greatly enhanced the mobility of a number of elements and compounds, particularly Cd, Pb, Mo, Ba, As. Mo mobility after drying turned the material unsuitable for technical embankment; the material may still be used in road engineering under impervious pavement.
Starting Page	781
Ending Page	795
Page Count	15
File Format	PDF
ISSN	18772641
Journal	Waste and Biomass Valorization
Volume Number	4
Issue Number	4
e-ISSN	1877265X
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-04-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dredged marine sediment Potentially toxic elements Environmental assessment Risk assessment Leaching test Road engineering Engineering Environment Renewable and Green Energy Industrial Pollution Prevention Waste Management/Waste Technology Environmental Engineering/Biotechnology
Content Type	Text
Resource Type	Article
Subject	Waste Management and Disposal Environmental Engineering Renewable Energy, Sustainability and the Environment

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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