Document Detail


Heavy metals in recovered fines from construction and demolition debris recycling facilities in Florida.
MedLine Citation:
PMID:  15336886     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A major product recovered from the processing and recycling of construction and demolition (C&D) debris is screened soil, also referred to as fines. A proposed reuse option for C&D debris fines is fill material, typically in construction projects as a substitute for natural soil. Waste material that is reused in a manner similar to soil must first be characterized to examine potential risks to human health and the environment. In Florida, samples of C&D debris fines from 13 C&D debris recycling facilities were characterized for 11 total and leachable heavy metal concentrations. Total metal concentration results (mg/kg) were compared to existing data on background Florida soil concentrations and to Florida's risk-based soil cleanup target levels (SCTLs). All of the detected metals were found to be elevated with respect to background. The 95% upper confidence level of arsenic from 99 samples was 3.2 mg/kg; arsenic presented the greatest limitation to reuse when compared to the SCTLs. Lead was not found to pose a major problem, likely because of the relatively new building infrastructure in Florida, which results in less demolition debris and less material impacted by lead-based paint. The results of batch leaching tests conducted using simulated rainwater (mg/l) were compared directly to risk-based groundwater levels for Florida and were found not to pose a risk using existing risk assessment policies.
Authors:
Timothy Townsend; Thabet Tolaymat; Kevin Leo; Jenna Jambeck
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Science of the total environment     Volume:  332     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2004 Oct 
Date Detail:
Created Date:  2004-08-31     Completed Date:  2005-03-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1-11     Citation Subset:  IM    
Affiliation:
Department of Environmental Engineering Sciences, University of Florida, PO Box 116450 Gainesville, FL 32611-6450, USA. ttown@ufl.edu
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MeSH Terms
Descriptor/Qualifier:
Arsenic / analysis,  standards
Conservation of Natural Resources*
Construction Materials / analysis*,  standards
Facility Design and Construction
Florida
Metals, Heavy / analysis*,  standards
Public Health
Refuse Disposal / methods*
Risk Assessment
Soil / analysis
Soil Pollutants
Chemical
Reg. No./Substance:
0/Metals, Heavy; 0/Soil; 0/Soil Pollutants; 7440-38-2/Arsenic

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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