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Issue 5, 2011
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Effects of fulvic substances on the distribution and migration of Hg in landfill leachate

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Abstract

Mercury (Hg) distribution and migration in different landfill stabilization processes were evaluated in this study. Wide ranges of Hg concentrations were observed because of the heterogeneity and variability of landfill refuse. In addition, temporally variable conditions, including pH, organic matter, and vegetation cover, which influence Hg migration in landfills, may also affect the temporal distribution of Hg in landfill refuse. The main fraction of Hg, elemental Hg, decreased with time, while the stable fractions of Hg increased. The fulvic acid (FA) extracted from the landfill leachate had much lower overall Hg-complexation stability constants, which suggests that organic S groups might have been rapidly saturated by small amounts of Hg while leaving oxygen functional groups, such as carboxylic functional or phenolic groups, acting as the primary binding sites for Hg.

Graphical abstract: Effects of fulvic substances on the distribution and migration of Hg in landfill leachate

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Publication details

The article was received on 01 Feb 2011, accepted on 24 Feb 2011 and first published on 06 Apr 2011


Article type: Paper
DOI: 10.1039/C1EM10103J
J. Environ. Monit., 2011,13, 1464-1469

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    Effects of fulvic substances on the distribution and migration of Hg in landfill leachate

    C. Xiaoli, L. Guixiang, W. Jun, T. Huanhuan, J. Rong and Z. Youcai, J. Environ. Monit., 2011, 13, 1464
    DOI: 10.1039/C1EM10103J

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