Stormwater filtration of toxic heavy metal ions using lignocellulosic materials selection process, fiberization, chemical modification, and mat formation

Abstract

Lignocellulosic materials were evaluated for their effectiveness in filtering toxic heavy metals from stormwater. Kenaf, alfalfa, juniper, and aspen fibers were used as models to evaluate the effectiveness and limitations of chemical modification and the extent of fiber degradation. Individual and mixed aqueous solutions of nickel, copper, zinc, and cadmium in various concentrations were exposed to the lignocellulosic fibers to estimate ion-exchange capacity and competition between ionic species. The potential of lignocellulosic fibers to act as filters is related to their sugar, extractives, and lignin contents and physical properties. Fiberization and formation of fibers into mats and the cost and availability of the filtration process are also discussed.

Citation

Han, James S. 1999. Stormwater filtration of toxic heavy metal ions using lignocellulosic materials selection process, fiberization, chemical modification, and mat formation. [2nd Inter-Regional Conference on Environment-Water 99 : 1999 September 01-04, Lausanne, Switzerland. S.l. : s.n., 1999?].:[11] p. : ill.