Fate of Arsenic in Swine Waste from Concentrated Animal Feeding Operations
- 1 July 2008
- journal article
- Published by Wiley in Journal of Environmental Quality
- Vol. 37 (4), 1626-1633
- https://doi.org/10.2134/jeq2007.0479
Abstract
Swine diets are often supplemented by organoarsenicals, such as 3-nitro-4-hydroxyphenylarsonic acid (roxarsone) to treat animal diseases and promote growth. Recent work reported roxarsone degradation under anaerobic conditions in poultry litter, but no such data exist for swine wastes typically stored in lagoons nearby concentrated animal feeding operations (CAFOs). The objectives of this study were to: (i) characterize a suite of swine wastes collected from 19 randomly selected CAFOs for soluble arsenate [As(V)], arsenite [As(III)], dimethylarsenic acid (DMA), monomethylarsonic acid (MMA), 3-amino-4-hydroxyphenylarsonic acid (3-HPPA), p-arsanilic acid, and roxarsone, and (ii) determine the geochemical fate of roxarsone in storage lagoons nearby CAFOs. Swine waste suspensions were spiked with roxarsone and incubated under dark/light and aerobic/anaerobic conditions to monitor roxarsone degradation kinetics. Arsenic speciation analysis using liquid chromatography and inductively coupled plasma mass spectrometry (LC-ICPMS) illustrated the prevalence of As(V) in swine waste suspensions. Roxarsone underwent degradation to either organoarsenicals (3-HPPA) or As(V) and a number of unidentified metabolites. Roxarsone degradation occurred under anaerobic conditions for suspensions low in solids content, but suspensions higher in solids content facilitated roxarsone degradation under both anaerobic and aerobic conditions. Increased solids content enhanced roxarsone degradation kinetics under aerobic conditions. According to current waste storage and sampling practices, arsenic in swine wastes stored in lagoons has been overlooked as a possible environmental health issue. Copyright © 2008. American Society of Agronomy, Crop Science Society of America, Soil Science Society . American Society of Agronomy, Crop Science Society of America, and Soil Science Society of AmericaKeywords
This publication has 18 references indexed in Scilit:
- Controlling the Fate of Roxarsone and Inorganic Arsenic in Poultry LitterJournal of Environmental Quality, 2008
- Arsenic Uptake and Accumulation in Rice (Oryza sativa L.) at Different Growth Stages following Soil Incorporation of Roxarsone and Arsanilic AcidPlant and Soil, 2006
- Development of a Water‐Extractable Phosphorus Test for ManureSoil Science Society of America Journal, 2005
- Controls on roxarsone transport in agricultural watershedsApplied Geochemistry, 2005
- Distribution and Bioavailability of Trace Elements in Livestock and Poultry Manure By-ProductsCritical Reviews in Environmental Science and Technology, 2004
- Measuring Water‐Extractable Phosphorus in Manure as an Indicator of Phosphorus in RunoffSoil Science Society of America Journal, 2002
- Concentrated swine feeding operations and public health: a review of occupational and community health effects.Environmental Health Perspectives, 2000
- Heavy metal contents of livestock feeds and animal manures in England and WalesBioresource Technology, 1999
- Phosphorus forms in animal manureBioresource Technology, 1994
- Quantitative assessment of worldwide contamination of air, water and soils by trace metalsNature, 1988