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2149661 
Journal Article 
In situ application of activated carbon and biochar to PCB-contaminated soil and the effects of mixing regime 
Denyes, MJ; Rutter, A; Zeeb, BA 
2013 
Yes 
Environmental Pollution
ISSN: 0269-7491
EISSN: 1873-6424 
182 
201-208 
English 
23933124 
WOS:000326661700024 
The in situ use of carbon amendments such as activated carbon (AC) and biochar to minimize the bioavailability of organic contaminants is gaining in popularity. In the first in situ experiment conducted at a Canadian PCB-contaminated Brownfield site, GAC and two types of biochar were statistically equal at reducing PCB uptake into plants. PCB concentrations in Cucurbita pepo root tissue were reduced by 74%, 72% and 64%, with the addition of 2.8% GAC, Burt's biochar and BlueLeaf biochar, respectively. A complementary greenhouse study which included a bioaccumulation study of Eisenia fetida (earthworm), found mechanically mixing carbon amendments with PCB-contaminated soil (i.e. 24 h at 30 rpm) resulted in shoot, root and worm PCB concentrations 66%, 59% and 39% lower than in the manually mixed treatments (i.e. with a spade and bucket). Therefore, studies which mechanically mix carbon amendments with contaminated soil may over-estimate the short-term potential to reduce PCB bioavailability. 
Biochar; Activated carbon; Polychlorinated biphenyls; Remediation; Phytoextraction; In situ immobilization 
IRIS
• PCBs
     Litsearches
          Remaining
          LitSearch August 2015
               Pubmed
               Toxline
               WoS