Tiered approach to corrective action objectives (TACO) : fact sheet series /

"February 1997."

Toxic volatile organic chemicals in urban air in Illinois /

"HWRIC RR-057."

Update : New Jersey Zinc/Mobil Chemical Superfund Site, DePue, Illinois = U ltimos acontecimientos : Sitio Superfund New Jersey Zinc/Mobil Chemical, Depue, Illinois.

The potentially responsible parties (PRPs) have removed the beaver dams and have collected the sediment samples they need for treatability studies. The treatability studies will establish the correct silt fence to minimize releases of sediment during the actual dredging to occur this fall. The studies will also determine the types and amounts of materials (lime, kiln dust, fly ash, etc.) required to stabilize the sediment, chemically tie up the metals and insure the sediment mixture will bear the weight of the cap on the Interim Storage Cell where the sediment will be placed. The Illinois Environmental Protection Agency (Illinois EPA) anticipates work to be completed by late fall or early winter 2004, if lake and river levels that affect the South Ditch are at their normal seasonal levels.

Update : New Jersey Zinc/Mobil Chemical Superfund Site, DePue, Illinois.

"September 2003."

Western Lion and Service Disposal #1 Landfill Sites : Loxa Road and Route 316, Charleston, Illinois.

"32322"--Colophon.

Superfund contracts : EPA's procedures for preventing conflicts of interest need strengthening: report to the Honorable John D. Dingell, Chairman, Subcommittee on Oversight and Investigations, Committee on Energy, House of Representatives /

"B-231219."--P. [1].

Environmental geology.

Co-published: Illnois State Geological Survey, Hazardous Waste Research and Information Center.

Superfund : contractors are being too liberally indemnified by the government : report to the Congress /

"B-231219"--P. [1].

Air pathway analysis.

Mode of access: Internet.

Disposal of dilute pesticide solutions /

Mode of access: Internet.

Superfund implementation : hearings before the Subcommittee on Superfund and Environmental Oversight of the Committee on Environment and Public Works, United States Senate, One hundredth Congress, first session, April 14, 1987, Newark, N.J.; April 29, June 25, and July 23, 1987, Washington, D.C.

Item 1045-A, 1045-B (microfiche)

Superfund oversight : hearings before the Subcommittee on Superfund, Ocean, and Water Protection of the Committee on Environment and Public Works, United States Senate, One Hundred Second Congress, second session.

"November 17, 1992-Bennington, VT"--Pt. 2.

An evaluation of thermal plasmas in pyrometallurgy

The development of reliable, high powered plasma generators has resulted in many plasma processes being proposed as alternatives to existing pyrometallurgical technologies. This work evaluates the advantages and disadvantages of plasma systems by reviewing plasma generators, their integration with reactors and the process economics. Many plasma systems were shown to be technically and economically superior to existing technologies, but some of the plasma system advantages quoted in the literature were found to be impractical because of other system constraints. Process applications were limited by the power inputs available from plasma generators compared to AC electric furnaces. A series of trials were conducted where chromite and steelplant baghouse dusts were smelted in the Tetronics' 2.0 MW transferred arc/open bath reactor to confirm the operating characteristics of the plasma system and its economics. Chromite smelting was technical superior to submerged arc furnace technology, but the economics were unfavourable because of the limited power available from the water-cooled plasma torch and the high electrical energy consumption. A DC graphite electrode plasma furnace using preheated and prereduced chromite concentrates will compete economically with the submerged arc furnace. Ni, Cr and Mo were economically recovered from high alloy content steelplant dusts for recycling. Five Electric Arc Furnace dusts were smelted to produce a non-toxic residue and recover the contained zinc to an enriched zinc oxide product for recycling. It should be possible to condense the zinc vapour directly in a zinc splash condenser to increase the value of the product. Because of the limited power available from plasma generators, plasma processes will be most suitable for treating high and medium value materials such as Au, Pt, Mo, Ni, Ti, V, Cr etc at small production rates, heating metals in tundishes and ladles and remelting superalloy scrap. The treatment of environmentally hazardous waste materials is a particularly interesting application because of the additional financial incentives. Non-transferred arc plasma generators will be used for air and gas preheating in blast furnaces to reduce metallurgical coke consumptions.

From HAZAN to WASAN

The article discusses the waste and source-matter analysis (WASAN) group workshop methodology designed to minimize the generation of avoidable hazardous waste. Several areas analyzed using WASAN are the behavior of a process, waste minimization inside that process, and the consequences for waste production from upstream and downstream processes falling outside of design. A group from the Enriched Uranium Residues Recovery Plant (EURRP) in Springfields, England used WASAN to analyze the generation of plastic bag waste.

Experimental investigation of the fuel properties of glidfuel, palm oil mill effluent biodiesel and blends

Biofuels derived from industry waste have potential to substitute fossil fuels (Diesel and Gasoline) in internal combustion (IC) engines. Use of waste streams as fuels would help to reduce considerably life-cycle greenhouse gas emissions and minimise waste processing costs. In this study an investigation into the fuel properties of two waste derived biofuels were carried out, they are: (i) Glidfuel (GF) biofuel - a waste stream from paper industry, and (ii) Palm Oil Mill Effluent (POME) biodiesel - biodiesel produced from palm oil industry effluent through various treatment and transesterification process. GF and POME was mixed together at various proportions and separately with fossil diesel (FD) to assess the miscibility and various physical and chemical properties of the blends. Fuel properties such as kinematic viscosity, higher heating value, water content, acid number, density, flash point temperature, CHNO content, sulphur content, ash content, oxidation stability, cetane number and copper corrosion ratings of all the fuels were measured. The properties of GF, POME and various blends were compared with the corresponding properties of the standard FD. Significance of the fuel properties and their expected effects on combustion and exhaust emission characteristics of the IC engine were discussed. Results showed that most properties of both GF and POME biodiesel were comparable to FD. Both GF and POME were miscible with each other, and also separately with the FD. Flash point temperatures of GF and POME biodiesel were 40.7°C and 158.7°C respectively. The flash point temperature of GF was about 36% lower than corresponding FD. The water content in GF and FD were 0.74 (% wt) and 0.01 (% wt) respectively. Acidity values and corrosion ratings of both GF and POME biodiesel were low compared to corresponding value for FD. The study concluded that optimum GF-POME biofuel blends can substitute fossil diesel use in IC engines.