Addition of activated carbon (AC) to sediments has been proposed as a method to reduce ecotoxicological risks of sediment-bound contaminants. The present study explores the effectiveness of granular AC (GAC) in extracting polycyclic aromatic hydrocarbon (PAH) from highly contaminated sediments. Four candidate GAC materials were screened in terms of PAH extraction efficiency using single-step 24-h GAC extractions, with traditional 24-h Tenax extraction as a reference. Subsequently, sorption of native PAHs to the best performing GAC 1240W (0.451.70?mm) was studied for sediment only and for GACsediment mixtures at different GACsediment weight ratios, using 76-mu m polyoxymethylene (POM) passive samplers. Granular AC sorption parameters for PAHs were determined by subtracting the contribution of PAH sorption to sediment from PAH sorption to the GACsediment mixture. It appears that the binding of PAHs and the effectiveness of GAC to reduce sediment porewater concentrations were highly dependent on the GACsediment mixing ratio and hydrophobicity of the PAH. Despite the considerable fouling of GAC by organic matter and oil, 50 to 90% of the most available PAH was extracted by the GAC during a 28-d contact time, at a dose as low as 4%, which also is a feasible dose in field-scale applications aimed at cleaning the sediment by GAC addition and removal. Environ. Toxicol. Chem. 2013;32:304311. (C) 2012 SETAC
机构:
Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R ChinaChinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
Du, Juan
Mehler, W. Tyler
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Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
So Illinois Univ, Fisheries & Illinois Aquaculture Ctr, Carbondale, IL 62901 USA
So Illinois Univ, Dept Zool, Carbondale, IL 62901 USAChinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
Mehler, W. Tyler
Lydy, Michael J.
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So Illinois Univ, Fisheries & Illinois Aquaculture Ctr, Carbondale, IL 62901 USA
So Illinois Univ, Dept Zool, Carbondale, IL 62901 USAChinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
Lydy, Michael J.
You, Jing
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Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R ChinaChinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
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Univ Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, MalaysiaUniv Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, Malaysia
Keshavarzifard, Mehrzad
Zakaria, Mohamad Pauzi
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Univ Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, MalaysiaUniv Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, Malaysia
Zakaria, Mohamad Pauzi
Hwai, Tan Shau
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Univ Sains Malaysia, Sch Biol Sci, Minden 11800, Pulau Pinang, MalaysiaUniv Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, Malaysia
Hwai, Tan Shau
Yusuff, Ferdius Mohamat
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Univ Putra Malaysia, Fac Environm Studies, Dept Environm Sci, Serdang 43400, Serdang, MalaysiaUniv Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, Malaysia
Yusuff, Ferdius Mohamat
Mustafa, Shuhaimi
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Univ Putra Malaysia, Halal Prod Res Inst, Serdang 4300, Selangor, MalaysiaUniv Putra Malaysia, Fac Environm Studies, Environm Forens Res Ctr ENFORCE, Serdang 43400, Selangor, Malaysia
机构:
Hokkaido Univ, Grad Sch Environm Sci, Kita Ku, Sapporo, Hokkaido 0600810, JapanHokkaido Univ, Grad Sch Environm Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan
Tomita, Yoko
Mihara, Yoshihiro
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Hokkaido Univ, Grad Sch Environm Sci, Kita Ku, Sapporo, Hokkaido 0600810, JapanHokkaido Univ, Grad Sch Environm Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan
Mihara, Yoshihiro
Tanaka, Shunitz
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Hokkaido Univ, Grad Sch Environm Sci, Kita Ku, Sapporo, Hokkaido 0600810, JapanHokkaido Univ, Grad Sch Environm Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan