Remediation Techniques for Cadmium-Contaminated Dredged River Sediments after Land Disposal
نویسندگان
چکیده
This paper examines the remediation techniques of cadmium (Cd)-contaminated dredged river sediments after land disposal in a city East China. Three techniques, including stabilization, soil leaching, and phytoremediation, are compared by analyzing performance for Cd-contaminated remediation. The experimental results showed that stabilization technique reduced leaching rate Cd from 33.3% to 14.3%, thus effectively reducing biological toxicity environmental Cd, but total amount did not decrease. Leaching with citric acid oxalic achieved removal rates 90.1% 92.4%, respectively. Compared these two phytoremediation was more efficient easier implement had less secondary pollution, it took time, usually several years. In this study, three were analyzed discussed technical, economic, safety perspectives comprehensively considering current status future plans study site. Soil found be best timely treatment contamination disposal.
منابع مشابه
Transport of Dredged Sediments after Disposal Operation in Lake Erie
A dredged material disposal operation was monitored on a location in Lake Erie 8 km offshore Ashtabula, Ohio, June to November, 1975. Some 200 sediment cores were collected in the periods before and after dredging and analyzed for the grain-size distribution of the sediments. Two current meters and a wave sensor moored nearby monitored the movement of the water masses. The sediments were dredge...
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ژورنال
عنوان ژورنال: Sustainability
سال: 2021
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su13116093