Waste remediation

How do you know if an operation falls under the hazardous waste standard We need to answer this question before we get too deep into the realm of hazardous waste remedial activities. Wliether the answer to... 

As piirt of each haz, irdous waste remedial action, the contamination at the site must be assessed. The options for remedial action to remo c or otherwise deal with hazardous materials will depend on the nature of the coutamiiuition lliat will be allowed to remain on site tifter cletmup. Thus there must be plans for site remediation to cover any accidental or emergency discharges to land or soils that might develop. 

To express that it is not just the amount of waste but rather its environmental impact, Sheldon introduced the environmental quotient EQ as the E factor multiplied by an unfriendliness quotient, Q, which can be assigned a value to indicate how undesirable a byproduct is. For example, Q = 0 for clean water, 1 for a benign salt, NaCl, and 100-1000 for toxic compounds. Evidently, catalytic routes that avoid waste formation are highly desirable, and the more economic value that is placed on, for example, the unfriendliness quotient, the higher the motivation to work on catalytic alternatives. Waste prevention is much to be preferred over waste remediation. 

Chitosan is a polymer with metal-binding properties that is derived from naturally occurring chitin. Research has been conducted on the potential use of chitosan in hazardous waste remediation. While chitosan does bind transition metals, it favors iron, a nonhazardous metal, which competes and interferes with chitosan s binding of toxic metals. Copper also tends to be highly bound, while the amount of cadmium and lead removed is lower. The technology is still undergoing testing and is not yet commercially available. 

The vendor claims that Houdini is qualified for a number of waste remediation applications. Uses for Houdini include mechanical waste retrieval, hot cell decommissioning, tank decontamination, material containerization, wall scabbling, tank inspection, pipeline cleaning and repair, and ship and barge cleaning. 

Roane, T.M. Kellogg, S. T. (1994). Astudy of microbial communities in lead-contaminated soils. In Proceedings of 9th Annual Conference of Hazardous Waste Remediation, ed. L.E. Erickson, D. L. Tellinson, S. C. Grant J. P. McDonald, pp. 247-59. Manhattan, Kansas Kansas State University. 

R. L. Crawford Center for Hazardous Waste Remediation Research, University of Idaho, Moscow, ID 83844-1052, USA... 

US Department of Energy. 1996. Radioactive tank waste remediation focus area. DOE/ EM-0295. August. 

Nunez, L. Buchholz, B.A. Vandergrift, G.F. Waste remediation using in situ magnetically assisted chemical separation, Sep. Sci. Technol. 30 (1995) 1455-1471. 

US Department of Energy Hazardous Waste Remedial Actions Program, Standard Operating Procedures for Site Characterizations, [Lockheed Martin Energy Systems, Inc, 1996]. 

The electrolytic displacement of the chlorines of polychlorobiphenyl molecules (PCBs) has been demonstrated as effective technology for hazardous waste remediation,8 for example... 

Solvated Electron Reductions A Versatile Alternative for Waste Remediation... 

The most creative application of the secondary cathode approach was described by Schelles and Van Grieken [24], who investigated its ability to determine the elemental constituents of polymeric materials. Mass spectrometric analysis has almost exclusively been directed at the determination of molecular weights and disparity characteristics secondary ion mass spectrometry (SIMS) [53,54] and matrix assisted laser desorption ionization (MALDI) [55,56] have carried the major share of the workload. Growing concerns over the fate of polymeric materials in the environment and the leaching of heavy metals into ground waters have necessitated the development of methods that permit the elemental analysis of bulk polymers. In addition, the use of polymers as immobilization media for waste remediation is also pressing these developments. 

Nuclear fuel/ weapons material processing Nuclear fuel reprocessing Nuclear waste remediation... 

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