Removal of arsenite(As(III)) and arsenate(As(V)) by synthetic pyrite (FeS2): synthesis, effect of contact time, and sorption/desorption envelopes.

@article{Han2013RemovalOA,
  title={Removal of arsenite(As(III)) and arsenate(As(V)) by synthetic pyrite (FeS2): synthesis, effect of contact time, and sorption/desorption envelopes.},
  author={Dong Suk Han and Jin Kun Song and Bill Batchelor and Ahmed M. Abdel-Wahab},
  journal={Journal of colloid and interface science},
  year={2013},
  volume={392},
  pages={311-318}
}
Reliable techniques for synthesizing pyrite are necessary in order to develop effective treatment methods that use pyrite to remove arsenic from water and to stabilize arsenic in wastes. The Fe(3+)/HS(-) values of 0.500 and 0.571 at 60°C and pH values ranging from 3.6 through 5.6 were found to produce pyrite most efficiently. Removal of As(V) was faster than removal of As(III) and the extent of removal of both As(III) and As(V) were more accurately described by the Langmuir adsorption model… CONTINUE READING

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