title: Kinetics of heavy metal uptake by vegetation immobilized in a polysulfone or polycarbonate polymeric matrix.
abstract: The ability of four common vegetations - wood, grass, compost, and peat moss - to remove cadmium, chromium, and lead from dilute aqueous solutions is investigated. Dried ground vegetations are immobilized in polysulfone, and poly (bisphenyl A) carbonate to form spherical beads through a phase inversion process. The beads are contacted with a dilute aqueous solution containing metal ions of interest. The removal of metal ions from the solution is monitored over the course of the experiment and the first-order kinetics parameters estimated. The rates of removal as well as the equilibrium bead loadings are shown to be affected by both the choice of vegetation and the choice of polymer.
authors.affiliation: Department of Chemical Engineering, University of Idaho, P.O. Box 441021, Moscow, ID 83844-1021, USA.
authors.forename: Ann M
authors.initials: AM
authors.lastname: Hardin
authors.forename: Wudneh
authors.initials: W
authors.lastname: Admassu
mesh_terms: D002104:Cadmium / Q000302:isolation & purification; D002119:Calcium Carbonate; D002254:Carbonates; D002857:Chromium / Q000302:isolation & purification; D002951:Citrates; D004338:Drug Combinations; D007700:Kinetics; D007854:Lead / Q000302:isolation & purification; D008277:Magnesium Oxide; D019216:Metals, Heavy / Q000302:isolation & purification*; D006109:Poaceae / Q000378:metabolism*; D011076:Polycarboxylate Cement / Q000378:metabolism*; D011108:Polymers / Q000378:metabolism*; D012987:Soil; D044003:Sphagnopsida / Q000378:metabolism*; D013450:Sulfones / Q000378:metabolism*; D014867:Water; D014873:Water Pollutants / Q000302:isolation & purification; D014876:Water Pollution / Q000517:prevention & control; D014934:Wood
chemical_list: D002254:Carbonates; D002951:Citrates; D004338:Drug Combinations; D019216:Metals, Heavy; D011076:Polycarboxylate Cement; D011108:Polymers; D012987:Soil; C050615:Suby's G solution; D013450:Sulfones; D014873:Water Pollutants; D002104:Cadmium; D014867:Water; D002857:Chromium; C017662:polysulfone P 1700; C005506:polycarbonate; D007854:Lead; D008277:Magnesium Oxide; D002119:Calcium Carbonate