Influence of Water Treatment Residuals on Phosphorus Solubility and Leaching

ABSTRACT Laboratory and greenhouse studies compared the ability of water treatment residuals (WTRs) to alter P solubility and leaching in Immokalee sandy soil (sandy, siliceous, hyperthermic Arenic Alaquod) amended with biosolids and triple superphosphate (TSP). Aluminum sulfate (Al‐WTR) and ferric...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental quality 2002-07, Vol.31 (4), p.1362-1369
Main Authors: Elliott, H.A., O'Connor, G.A., Lu, P., Brinton, S.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Alum Compounds - chemistry
Applied sciences
Biological and medical sciences
Conservation of Natural Resources
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Ferric Compounds - chemistry
Fertilizers
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Manure
Natural water pollution
Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries
Phosphorus - chemistry
Pollution
Pollution, environment geology
Rainwaters, run off water and others
Silicon Dioxide
Soil
Soil and water pollution
Soil science
Soil-plant relationships. Soil fertility. Fertilization. Amendments
Solubility
Waste Disposal, Fluid - methods
Water treatment and pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT Laboratory and greenhouse studies compared the ability of water treatment residuals (WTRs) to alter P solubility and leaching in Immokalee sandy soil (sandy, siliceous, hyperthermic Arenic Alaquod) amended with biosolids and triple superphosphate (TSP). Aluminum sulfate (Al‐WTR) and ferric sulfate (Fe‐WTR) coagulation residuals, a lime softening residual (Ca‐WTR) produced during hardness removal, and pure hematite were examined. In equilibration studies, the ability to reduce soluble P followed the order: Al‐WTR > Ca‐WTR ≈ Fe‐WTR >> hematite. Differences in the P‐fixing capacity of the sesquioxide‐dominated materials (Al‐WTR, Fe‐WTR, hematite) were attributed to their varying reactive Fe‐ and Al‐hydrous oxide contents as measured by oxalate extraction. Leachate P was monitored from greenhouse columns where bahiagrass (Paspalum notatum Flugge) was grown on Immokalee soil amended with biosolids or TSP at an equivalent rate of 224 kg P ha−1 and WTRs at 2.5% (56 Mg ha−1). In the absence of WTRs, 21% of TSP and 11% of Largo cake biosolids total phosphorus (PT) leached over 4 mo. With co‐applied WTRs, losses from TSP columns were reduced to 3.5% (Fe‐WTR), 2.5% (Ca‐WTR), and
ISSN:0047-2425
1537-2537
DOI:10.2134/jeq2002.1362