National Recovery Technologies

Another example is a system made by National Recovery Technologies (NRT) Inc. (Nashville, TN) [72]. This apparatus incorporates a proprietary electromagnetic screening process that also detects the presence of chlorine as found in PVC bottles. Once detected, PVC bottles are pneumatically jettisoned from the commingled bottle feed stream by a microprocessor-based air-blast system. The NRT technology permits bottles to be delivered to the unit in a mass sort concept in either crushed or whole form. This system does not require any special positioning or orientation of the bottles in order to achieve high efficiency rates. 

Figure 3.5 National Recovery Technologies Vinyl Separation System...

The only systems used on an industrial scale so far are believed to be based on X-ray and IR, mainly for bottles, since the high cost of PET providing an incentive. X-ray absorption systems are made by National Recovery Technologies, USA, and Giovani, Italy. X-ray fluorescence detectors are made by Magnetic Separation Systems (MSS) and Asoma Instruments, both of the USA. 

Microbes, Inc. founded in 1988, is a Delaware corporation, whose business includes two areas increasing yields from (1) oilfields and (2) food crops. The oil-related business entails the development and supply of microbial products and services for enhancing oil recovery from existing reservoirs. National Parakleen Company, Inc. is a subsidiary, which since 1988, have applied their proprietary technology in oil wells and reservoirs, jointly with Microbes, Inc. Their enhanced recovery technology (Migration Microbial... 

USEPA. (2003). Electrochemical Design Associates, Lead Recovery Technology Evaluation. United States Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Cincinnati, Ohio. Report Number EPA/540/R-04/506. 

Most of the increase in the estimate from applying advanced technology comes from improvements in chemical flooding methods. The projections assume that crude oil has a nominal price of 30 per barrel and that the minimum rate of return on capital is 10 percent. Reprinted with permission from Enhanced Oil Recovery. Copyright 1984 by the National Petroleum Council. 

T. K. Mukherjee and C. K. Gupta, Flowsheets Development for Recovery of Nonferrous Metal values from Secondary Resources by Solvent Extraction, Proceed, of a Symposium - Emerging Separation Technologies for Metals II Sponsored by the Engineers Foundation Conference and the National Science Foundation held at Kona, Hawaii, June 16-21,1996. 

Gas-to-liquid technology is at the same time an economically viable option for the recovery of stranded gas and an option to produce clean fuels or chemical feedstocks. Besides the financial incentive to monetise otherwise worthless gas, GTL has received added impetus in recent years, especially with regard to diesel fuel also, the trend in industrialised nations to reduce sulphur and particle contents in fuels is likely to accelerate. However, GTL competes with LNG for reserves of inexpensive, stranded natural gas further declines in LNG supply costs could undermine the attraction of GTL. The future of GTL further hinges on the reduction of... 

The purpose of the EDS phase is threefold (1) to support the development of a request for proposal (RFP) for a full-scale facility (2) to support the certification decision of the Under Secretary of Defense for Acquisition and Technology, as directed by Public Law 105-261 and (3) to support documentation required for the National Environmental Policy Act (NEPA) and the data required for a permit under the Resource Conservation and Recovery Act (RCRA). Each EDS comprises two parts an EDP and engineering tests and studies to generate required data that were not obtained during the earlier demonstration test phase. 

Some of the methods commonly used for the determination of thorium in biological materials are given in Table 6-1. The colorimetric methods are not capable of isotope-specific determination of thorium isotopes. Alpha spectrometric and neutron activation analysis are useful in the quantification of isotope-specific thorium and thorium-232, respectively, and have better sensitivities than colorimetric methods. Alpha spectrometry is the commonly used isotope-specific analysis for the determination of thorium-232 and the thorium-230 derived from the decay of uranium-238 (Wrenn et al. 1981). Standard reference materials (SRMs) containing thorium in human liver (SRM-4352) and human lung (SRM-4351) necessary for the determination of absolute recovery in a given sample are available from the National Institute of Standards and Technology (Inn 1987). 

T0016 Advanced Separation Technologies, Inc., ISEP Continuous Contactor T0132 Brookhaven National Laboratory, Biochemical Recovery of Radionuclides and Heavy Metals... 

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