Title

Transport of heavy metals through accumulated sediments in wet ponds

Keywords

Bottom sediments; Detention ponds; Highway runoff; Metal accumulation; Metal transport

Abstract

Nine detention ponds in Florida were selected to investigate heavy-metal accumulation in their bottom sediments. Core sediments samples were collected from each pond, frozen and divided into six layers. The total metal content and extractable metal by toxicity characteristic leaching procedure (TCLP) were determined for each sediment layer in each pond. The fractions of extractable metals using TCLP exhibited an exponential decline with increasing fine particles (less than 0.062 mm diameter) and organic content. Most of these metals are tightly bound to the bottom sediments, and their transport is very slow. It is feasible to remove the accumulated sediments saturated with metals from the bottom of the ponds for periodic maintenance at relatively long periods, averaging 15 years, to avoid seepage and potential contamination of groundwater beneath the pond. © 1994.

Publication Date

5-23-1994

Publication Title

Science of the Total Environment, The

Volume

146-147

Issue

C

Number of Pages

485-491

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/0048-9697(94)90273-9

Socpus ID

0028241204 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028241204

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