01649nas a2200193   4500008004100000022001400041245010400055210006900159260007100228300001400299490000700313520092400320100001501244700001701259700001801276700001701294700001901311856012501330       2005                        eng d  a0743-746300aHeavy-metal remediation by a fungus as a means of production of lead and cadmium carbonate crystals0 aHeavymetal remediation by a fungus as a means of production of l  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAUG  a7220-72240 v213 a<p>We show here that reaction of the fungus, Fusarium oxysporum, with the aqueous heavy-metal ions Pb2+ and Cd2+ results in the one-step formation of the corresponding metal carbonates. The metal carbonates are formed by reaction of the heavy-metal ions with CO2 produced by the fungus during metabolism and thus provide a completely biological method for production of crystals of metal carbonates. The PbCO3 and CdCO3 crystals thus produced have interesting morphologies that are shown to arise because of interaction of the growing crystals with specific proteins secreted by the fungus during reaction. An additional advantage of this approach is that the reaction leads to detoxification of the aqueous solution and could have immense potential for bioremediation of heavy metals. Under conditions of this study, the metal ions are not toxic to the fungus, which readily grows after exposure to the metal ions.</p>1 aSanyal, A.1 aRautaray, D.1 aBansal, Vipul1 aAhmad, Absar1 aSastry, Murali  uhttps://library.ncl.res.in/content/heavy-metal-remediation-fungus-means-production-lead-and-cadmium-carbonate-crystals-0