Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Eun W. Shin; James S. Han; Roger M. Rowell; Soo-Hong Min; James O. Peterson
    Date: 2003
    Source: Proceedings, 2003 AIChE annual meeting : moving innovation toward opportunity, 2003 November 16-21, San Francisco, CA. New York, NY : AIChE, [2003]: [3] pages
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (506 KB)

    Description

    Water contaminated by heavy metals remains a serious environmental and public health problem. Cadmium is a toxic heavy metal that not only causes choking, abdominal pain, anemia, renal dysfunction, and diarrhea, but also has been listed as a carcinogen by the EPA (Gaballah and Kibertus, 1998). Among current technologies used to reduce the amount of heavy metals in water, applications and studies of adsorption method with bio-sorbents have been expanded because of their low cost. (Gaballah and Kibertus 1998; Reddad et al., 2002). Pinyon juniper and modified pinyon juniper have been used as sorbents for removal of heavy metal (Min et al., 2002). In general, raw lignocellulosic bio-sorbents were modified by various methods to increase their sorption capacities because metal ion binding by lignocellulosic bio-sorbents is believed to take place through chemical functional groups such as carboxyl, amino, or phenolics. In this study, sulfonic sites were introduced into juniper wood as new binding sites for cadmium ions. Accordingly, the objectives of this study are 1) to assure that sulfonation enhances the cadmium ion sorption capacity of lignocellulosic biosorbents using sorption tests, and 2) to reasonably explain the improvement of sorption capacity by sulfonation by observing changes in functional groups on the surfaces of the sorbents.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Shin, Eun W.; Han, James S.; Rowell, Roger M.; Min, Soo-Hong; Peterson, James O. 2003. Enhancement of cadmium ion sorption capacity of lignocellulosic bio-sorbent by sulfonation. Proceedings, 2003 AIChE annual meeting : moving innovation toward opportunity, 2003 November 16-21, San Francisco, CA. New York, NY : AIChE, [2003]: [3] pages

    Keywords

    Cadmium, ion sorption, lignocellulosics, biosorbents, sulfonation

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/9513