Chloromethylated Activated Carbon: A Useful New Synthon for Making a Novel Class of Sorbents for Heavy Metal Separations

Details

• Personal Author:
  Fryxell GE ; LaFemina NJ ; Li XS ; Samuels WD ; Sukwarotwat V ; Yantasee W
• Description:
  The chloromethylation of activated carbon is described. Chloromethylation was found to produce a carbon derivative with a surface area of 1310 m2/g and no significant change in the pore structure. The product was found to contain approx. 1.5 mmole of [sbnd]CH2Cl groups per g of material, similar to the functional density reported in the original Merrifield resin synthesis. Displacement of the benzylic chloride was achieved by treating this material with an excess of sodium thiosulfate in refluxing aqueous methanol. The resulting Bunte salt was then hydrolyzed by treatment with warm 3 M HCl to afford the corresponding thiol ("AC-CH2-SH") cleanly and in high yield. AC-CH2-SH was found to be an effective heavy metal sorbent, efficiently capturing Hg, Pb, Ag, and Cu. Sorption kinetics were rapid, with equilibrium achieved in less than 30 minutes. [Description provided by NIOSH]
• Subjects:
  Metals, Heavy Occupational Health Polymers Safety Sulfhydryl Compounds
• Keywords:
  Author Keywords: Activated Carbon Carbon Chemically Modified Chloromethylation Heavy Metal Heavy Metals Mercury Methyl Compounds Nanoporous Porous Materials Sorbent Sorption Thiol Thiols

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• ISSN:
  0149-6395
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 10 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  228-235
• Volume:
  45
• Issue:
  2
• NIOSHTIC Number:
  nn:20060810
• Citation:
  Sep Sci Technol 2010 Jan; 45(2):228-235
• Contact Point Address:
  Glen E. Fryxell, Pacific Northwest National Laboratory, P. O. Box 999, Richland, WA 99352, USA
• Email:
  glen.fryxell@pnl.gov
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0) ; Copper (CAS RN 7440-50-8) ; Lead (CAS RN 7439-92-1) ; Mercury (CAS RN 7439-97-6)
• Federal Fiscal Year:
  2010
• Performing Organization:
  Battelle Pacific Northwest Laboratories
• Peer Reviewed:
  True
• Start Date:
  20060901
• Source Full Name:
  Separation Science and Technology
• End Date:
  20090831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fdf950fce85ab699732f0ab38ebced372aa2c29dc0e3c45e0d0f6a29815a78ab25103ddead56e3c80afa412a07dee5a9c2607d6f60037e213ad4a538ca0fc4a1
• Download URL:
  https://stacks.cdc.gov/view/cdc/224617/cdc_224617_DS1.pdf
• File Type:
  [PDF - 351.44 KB ]