Emissions of Inorganic and Organic Arsenic Compounds via the

Environ. Sci. Technol. 2009, 43, 7092–7097

Emissions of Inorganic and Organic Arsenic Compounds via the Leachate Pathway from Pretreated Municipal Waste Materials: A Landfill Reactor Study J . - H . H U A N G , * ,† G . I L G E N , ‡ D . V O G E L , §,⊥ B. MICHALZIK,| S. HANTSCH,⊥ L. TENNHARDT,# AND B. BILITEWSKI⊥ Institute of Biogeochemistry and Pollutant Dynamics, Swiss Federal Institute of Technology Zurich (ETH Zurich) CHN, CH-8092 Zurich, Switzerland, Central Analytic, Bayreuth Center for Ecology and Environmental Research (BayCEER), University of Bayreuth, 95440 Bayreuth, Germany, Po¨yry GKW GmbH, Grunaer Weg 26, 01277 Dresden, Germany, Institute of Geography, Friedrich-Schiller-University Jena, Lo¨bdergraben 32, 07743 Jena, Germany, Institute of Waste Management and Contaminated Sites Treatment, Technische Universita¨t Dresden, Pratzschwitzer Strasse 15, 01796 Pirna, Germany, and Berliner Wasserbetriebe, Cicerostrasse 24, 10709 Berlin, Germany

Received October 28, 2008. Revised manuscript received August 4, 2009. Accepted August 5, 2009.

The emission of arsenic (As) with leachate from mechanically biologically pretreated municipal solid waste (MBP-MSW) was quantified over one year using landfill simulation reactors. Arsenic mobilization and transformation processes were studied by simulating different environmental conditions (anoxic conditions with underlying soil or oxic/anoxic conditions). Amounts of mono-, di-, and trimethylated As in MBP-MSW prior to simulation were