Foundry waste

Patzelt, R.R. and Hassick, D.E., Dewatering of steel-mill sludges by belt-press filtration, Section 13—Steel and Foundry Wastes, in Proceedings of the 39th Industrial Waste Conference, Purdue University, 469-485, 1984. 

Source From AFS, Alternative Utilization of Foundry Waste Sand, final report (Phase I) for Illinois Department of Commerce and Community Affairs, American Foundrymen s Society, Des Plaines, IL, July 1991. Javed, S. and Lovell, C.W., Use of Foundry Sand in Highway Construction, Joint Highway Research Project No. C-36-50 N, Purdue University, West Lafayette, IN, July 1994. Javed, S., Lovell, C. W., and Wood, L.E., Waste Foundry Sand in Asphalt Concrete, in Transportation Research Record, No 1437, Transportation Research Board, Washington, DC, 1994. 

Source From AFS, Alternative Utilization of Foundry Waste Sand, final report (Phase I) for Illinois Department of Commerce and Community Affairs, American Foundrymen s Society, Des Plaines, IL, July 1991. 

Shah, D.B. and Phadke, A.V., Lead removal of foundry waste by solvent extraction, Journal of Air and Waste Management, 45, 150-155, 1995. 

Ham, R.K., Boyle, W.C., Engroff, E.C., and Fero, R.L., Determining the presence of organic compounds in foundry waste leachates, in Modern Casting, American Foundrymen s Society, August 1989. 

Johnson, C.K., Phenols in foundry waste sand, in Modem Casting, American Foundrymen s Society, January 1981. 

The use of foundry waste as a construction material is not a new idea. Available options include the use of foundry sands and other wastes for construction fill use of certain types of waste as cover or construction material in municipal waste landfills and constructive use... 

Turpin, P.D. et al. 1985. "Methods to Treat EP-Toxic Foundry Wastes and Wastewaters." American Foundrvmen s Society Transactions. 93 737-740. American Foundrymen s Society, Desplaines, Illinois. 

The basic management options for minimizing both the amount and degree of hazardous waste associated with foundry waste are as follows ... 

Figure 6 Phenol removal from a synthetic waste and a foundry waste as a function of HRP dose with and without the presence of 100 mg/L PEG. [Initial phenol] = 3.5 mM (330 mg/L as phenol), [initial peroxide] = 4.9 mM. (Adapted from Ref. 24.)... 

As shown in Fig. 6, foundry wastewater (330 mg/L total phenols, pH 6.5) was successfully treated resulting in more than 99% removal of total phenols [24], Enzyme requirements were significantly reduced through optimization of treatment conditions and the use of PEG as an additive. It is notable, however, that the protective effect exerted by PEG was not as great as was observed in a synthetic waste. It was surmised that this could be due to interaction of PEG with other components of the waste, thereby reducing its availability for protection. Alternatively, the polymer products created in the foundry waste may be significantly different from those experienced during the treatment of aqueous solutions of pure phenols. 

It should be noted that full treatment of the waste could be accomplished with a retention time of approximately 5 min when only 0.8 U/mL of crude or pure enzyme were used in the presence of PEG. In contrast, an aerobic biological treatment system that was used to treat this particular foundry waste required a retention time of approximately 6 hr. This illustrates one of the most significant advantages of enzymatic treatment. On the other hand, the use of crude enzyme preparations and PEG contributes significant quantities of organic compounds to the waste, which ultimately must be removed in a subsequent treatment step. 

MAJOR PRODUCT APPLICATIONS paints, coatings, rubber, abrasive polishes, cleaning waxes, seed coatings, anticaking agent, antiblock applications, pesticide formulations, asphalt extender, automotive windshields, catalyst support, concrete additive, dental molds, drilling mud, filter papers and pads, specialty p ers, paperboard, foundry, waste disposal aids, stucco, battery boxes, plastic film... 

The annual generation of foundry waste (including dnst and spent foundry sand) in the United States ranges from 9-13.6 million metric tons (10-15 million tons) [83-85]. 

Johnson CK (1981) Phenols in foundry waste sand. Modern Casting (Trans American Foundrymen s Soc), p 273... 

Table 2.4 Potential soil contamination from ferrons foundry raw materials [140, EU Thematic Network Foundry Wastes, 2001], [225, TWG, 2003]...

A review and study of foundry waste sand quality and composition was performed in Finland. Data were collected from literature and from own experiments [169, Orkas, 2001],... 

Hydraulic systems for die-casting use water-glycol mixtures, sueh as hydraulic liquid. Leaks in the hydraulie system and consequent transport of the leaked liquid into the water system eould lead to the presence of glycols in the foundry waste water. Removal of the glycol is not possible using filtration or flotation techniques. 

The technique is under development in the EU in an FP5 Growth project BRICETS "Metal By-Product Recovery in Induction Furnaces - Commercial, Environmental and Technical Solutions", contract number GlRD-CT-2001-00482. The project is due to finish in spring 2004. [140, EU Thematic Network Foundry Wastes, 2001], [202, TWG, 2002]... 

EEf Thematic Network Foundry Wastes (2001). "Foundry Waste Possibilities in the Future", Inasmet. 

---