TY - JOUR
T1 - Phytofiltration of hazardous cadmium, chromium, lead and zinc ions by
biomass of Medicago sativa (Alfalfa)
AU - Gardea-Torresdey, JL
AU - Gonzalez, JH
AU - Tiemann, KJ
AU - Rodriguez, O
AU - Gamez Goytia, Gerardo
PY - 1998/1
Y1 - 1998/1
N2 - Previous laboratory batch experiments of Medicago sativa (Alfalfa)
indicated that the African shoots population had an appreciable ability
to bind copper(II) and nickel(II) ions from aqueous solution. Batch
laboratory pH profile, time dependency and capacity experiments were
performed to determine the binding ability of the African shoots for
cadmium(II), chromium(III), chromium(VI), lead(II), and zinc(II). Batch
pH profile experiments for the mentioned ions indicated that the optimum
pH for metal binding is approximately 5.0. Time dependency experiments
for all the metals studied showed that metal binding to the African
alfalfa shoots occurred within 5 min. Binding capacity experiments
revealed the following amounts of metal ions bound per gram of biomass:
7.1 mg Cd(II), 7.7 mg Cr(III), 43 mg Pb(II), and 4.9 mg Zn(II). However,
no binding occurred for chromium(VI). Nearly all of the metals studied
were recoverable by treatment with 0.1 M HCl. Column experiments were
performed to stud
AB - Previous laboratory batch experiments of Medicago sativa (Alfalfa)
indicated that the African shoots population had an appreciable ability
to bind copper(II) and nickel(II) ions from aqueous solution. Batch
laboratory pH profile, time dependency and capacity experiments were
performed to determine the binding ability of the African shoots for
cadmium(II), chromium(III), chromium(VI), lead(II), and zinc(II). Batch
pH profile experiments for the mentioned ions indicated that the optimum
pH for metal binding is approximately 5.0. Time dependency experiments
for all the metals studied showed that metal binding to the African
alfalfa shoots occurred within 5 min. Binding capacity experiments
revealed the following amounts of metal ions bound per gram of biomass:
7.1 mg Cd(II), 7.7 mg Cr(III), 43 mg Pb(II), and 4.9 mg Zn(II). However,
no binding occurred for chromium(VI). Nearly all of the metals studied
were recoverable by treatment with 0.1 M HCl. Column experiments were
performed to stud
M3 - Article
SP - 29
EP - 39
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
SN - 0304-3894
ER -