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Title: Laying Waste to Mercury: Inexpensive Sorbents Made from Sulfur and Recycled Cooking Oils

Mercury pollution threatens the environment and human health across the globe. This neurotoxic substance is encountered in artisanal gold mining, coal combustion, oil and gas refining, waste incineration, chloralkalai plant operation, metallurgy, and areas of agriculture in which mercuryrich fungicides are used. Thousands of tonnes of mercury are emitted annually through these activities. With the Minamata Convention on Mercury entering force this year, increasing regulation of mercury pollution is imminent. It is therefore critical to provide inexpensive and scalable mercury sorbents. The research herein addresses this need by introducing low-cost mercury sorbents made solely from sulfur and unsaturated cooking oils. A porous version of the polymer was prepared by simply synthesising the polymer in the presence of a sodium chloride porogen. The resulting material is a rubber that captures liquid mercury metal, mercury vapour, inorganic mercury bound to organic matter, and highly toxic alkylmercury compounds. Mercury removal from air, water and soil was demonstrated. Because sulfur is a by-product of petroleum refining and spent cooking oils from the food industry are suitable starting materials, these mercury-capturing polymers can be synthesised entirely from waste and supplied on multi-kilogram scales. This study is therefore an advance in waste valorisation and environmental chemistry.
Authors:
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  1. Flinders Univ., Bedford Park, SA (Australia)
  2. Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon Portugal; Univ. of Lisbon (Portugal)
  3. Flinders Univ., Bedford Park, SA (Australia); Univ. of Lisbon (Portugal)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Flinders Univ., Bedford Park, SA (Australia); Flinders Univ., Bedford Park, SA (Australia)
  6. Univ. of Melbourne (Australia); Flinders Univ., Bedford Park, SA (Australia)
  7. Centre for Advanced Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne Victoria Australia
  8. RMIT Univ., Melbourne, VIC (Australia)
  9. Univ. of Cambridge (United Kingdom); Univ. of Lisbon (Portugal)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; Mercury Technology Development Program
Type:
Published Article
Journal Name:
Chemistry - A European Journal
Additional Journal Information:
Journal Volume: 23; Journal Issue: 1; Journal ID: ISSN 0947-6539
Publisher:
ChemPubSoc Europe
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1409120
Alternate Identifier(s):
OSTI ID: 1394417; OSTI ID: 1409121