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DOI: | 10.2134/jeq2007.0397 |
Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/37/6/2332 Last checked: 12/06/2017 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/37/6/2332 Last checked: 12/06/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | de Koff, J. P.;
Lee, B. D.;
Dungan, R. S. |
Author Affiliation: | de Koff and Lee: Agronomy Dep., Purdue University, West Lafayette, IN; Dungan: Northwest Irrigation and Soils Research Lab, USDA-ARS, Kimberly, ID |
Title: | Amelioration of physical strength in waste foundry green sands for reuse as a soil amendment |
Section: | Waste management Other records with the "Waste management" Section
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Source: | Journal of Environmental Quality. Vol. 37, No. 6, November 2008, p. 2332-2338. |
Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
# of Pages: | 7 |
Related Web URL: | https://dl.sciencesocieties.org/publications/jeq/abstracts/37/6/2332 Last checked: 12/06/2017 Notes: Abstract only |
Keywords: | TIC Keywords: Cation exchange capacity; Evaluations; Landfills; Recycling; Root growth rate; Sand; Soil amendments; Soil strength; Wastes
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Abstract/Contents: | "To avoid increasing costs of landfill disposal, it has become increasingly important for U.S. foundries to identify beneficial reuses for the 8 to 12 million tons of waste foundry sand (WFS) generated annually. A major drawback to the reuse of some WFSs as a soil amendment is their high soil strength, under dry conditions, where root growth may be limited. Fifteen WFSs were analyzed for strength to rupture using lab-formed clods, exchangeable cations (Na, Mg, Ca), metal oxide concentration (Fe, Mn, Al, Si), cation exchange capacity (CEC), and % clay. Several WFS samples from gray iron foundries demonstrated high strength to rupture values (> 1.5 MPa), and could potentially restrict root growth in amended soils. The percentage of Na-bentonite exhibited a positive correlation (R2 = 0.84) with strength to rupture values. When WFSs containing more Na-bentonite were saturated with 1 mol L-1 Ca ions, strength values decreased by ~70%. Waste foundry sands containing less Na-bentonite were saturated with 1 mol L-1 Na ions and exhibited a threefold increase in strength. Additions of gypsum (up to 9.6 g kg-1 sand) to high strength waste foundry sands also caused decreases in strength. These results indicate that high strength WFSs have properties similar to hardsetting soils which are caused by high Na+ clay content and can be ameliorated by the addition of Ca2+." |
Language: | English |
References: | 48 |
Note: | Pictures, b/w Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): de Koff, J. P., B. D. Lee, and R. S. Dungan. 2008. Amelioration of physical strength in waste foundry green sands for reuse as a soil amendment. J. Environ. Qual. 37(6):p. 2332-2338. |
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| DOI: 10.2134/jeq2007.0397 |
| Web URL(s): https://dl.sciencesocieties.org/publications/jeq/articles/37/6/2332 Last checked: 12/06/2017 Access conditions: Item is within a limited-access website https://dl.sciencesocieties.org/publications/jeq/pdfs/37/6/2332 Last checked: 12/06/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2225072a |
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