Effects of the biologically produced polymer alginic acid on macroscopic and microscopic calcite dissolution rates.

@article{Perry2004EffectsOT,
  title={Effects of the biologically produced polymer alginic acid on macroscopic and microscopic calcite dissolution rates.},
  author={Thomas D Perry and Owen W. Duckworth and Christopher J. McNamara and Scot T Martin and Ralph Mitchell},
  journal={Environmental science & technology},
  year={2004},
  volume={38 11},
  pages={3040-6}
}
Dissolution of carbonate minerals has significant environmental effects. Microorganisms affect carbonate dissolution rates by producing extracellular metabolites, including complex polysaccharides such as alginic acid. Using a combined atomic force microscopy (AFM)/flowthrough reactor apparatus, we investigated the effects of alginic acid on calcite dissolution. Macroscopic dissolution rates, derived from the aqueous metal ion concentrations, are 10(-5.5) mol m(-2) s(-1) for 5 < pH < 12 in the… CONTINUE READING