Effects of humic acids on the photoinduced reduction of U(VI) in the presence of semiconducting TiO2 particles
Article Abstract:
Researchers from Italy investigated the effects of humic acid on U(VI) reduction in aqueous solutions using laser induced fluorescence.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2000
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Humic acid-sensitized photoreduction of Cr(VI) on ZnO particles
Article Abstract:
The ability of humic acid to function as a sensitizer during photoinduced reduction of Cr(VI) to Cr(III) in suspensions containing ZnO particles was investigated using equilibrium sorption studies. The results showed that Cr(VI) adsorption on ZnO was very low while Cr(III) was completely adsorbed on ZnO. Cr(VI) photoreduction was induced by solar irradiation and it led to a substantial increase in the volume of Cr adsorbed on the mineral oxide.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Humic acid binding of trivalent TI and Cr studied by synchronous and time-resolved fluorescence
Article Abstract:
Synchronous and time-resolved techniques proved useful in the investigation of low concentration metal ion-humic acid (HA) interactions. Comparable values of intrinsic binding constants for Tl(III) and Cr(III) can be obtained by modeling the experimental data with an electrostatic discrete site approach. Results from the complexation of the two metals with groundwater HA indicated that other species may also bind to HA aside from the aquo ion and the first hydroxo complex.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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