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    Biomass byproducts for the remediation of wastewaters contaminated with toxic metals

    Date
    2001-09-15
    Author
    Schneegurt, Mark A.
    Jain, Jinesh C.
    Menicucci, John A.
    Brown, Sarah A.
    Kemner, Kenneth M.
    Garofalo, David F.
    Quallick, Matthew R.
    Neal, Clive R.
    Kulpa, Charles F.
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    Citation
    Environmental science & technology. 2001 Sep 15; 35(18): 3786-91.
    Abstract
    Pollution of the environment with toxic metals is widespread and often involves large volumes of wastewater. Remediation strategies must be designed to support high throughput while keeping costs to a minimum. Biosorption is presented as an alternative to traditional physicochemical means for removing toxic metals from wastewater. We have investigated the metal binding qualities of two biomass byproducts that are commercially available in quantity and at low cost, namely "spillage", a dried yeast and plant mixture from the production of ethanol from corn, and ground corn cobs used in animal feeds. The biomass materials effectively removed toxic metals, such as Cu, Cs, Mo, Ni, Pb, and Zn, even in the presence of competing metals likely to be found in sulfide mine tailing ponds. The effectiveness of these biosorbents was demonstrated using samples from the Berkeley Pit in Montana. Investigations included column chromatography and slurry systems, and linear distribution coefficients are presented. X-ray spectroscopy was used to identify the binding sites for metals adsorbed to the spillage material. The results of our experiments demonstrate that the biosorption of metals from wastewaters using biomass byproducts is a viable and cost-effective technology that should be included in process evaluations.
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    URI
    http://pubs.acs.org/doi/abs/10.1021/es010766e
    http://hdl.handle.net/10057/4166
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