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Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only Publication Acceptance Date: 4/17/1997 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: A novel series of water-insoluble cation exchange resins was produced by heating a commercial phytic acid solution with several low value agricultural residues, cellulose (newsprint) or starch. Some of the agricultural residues used as substrates were: corn bran, ground corncob, oat hull, soy hull, and sugar beet pulp. Each of these materials was heated with phytic acid at 180 deg C for 20-35 min in vacuo. The brown to black material produced had an ion exchange capacity for calcium that ranged from 3.8 to 6.1 meq/g. These materials can remove cations such as lead and some organics such as atrazine from aqueous solutions having a pH as low as 2.5. The exchange capacities of these new resins compare favorably with the commercial sulfonated styrene-devinylbenzene resins which have an ion exchange capacity of 5.0 meq/g (dry). |
