Thermal desorption: the basics

Article Abstract:

Thermal desorption, which involves heating the soil, sediments and sludges in order to volatilize the existing contaminants, is emerging as one of the preferred means of treating hazardous waste. The procedure is classified into either a low-temperature or a high-temperature process. Thermal desorption has been proven effective in treating wastes that have been contaminated by volatile organic compounds, polycyclic aromatic hydrocarbons, semi-volatile organic compounds, polychlorinated biphenyls and fuels.

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Hazwaste manifesting goes electronic

Article Abstract:

The US Environmental Protection Agency has unveiled a proposal to alter the Uniform Hazardous Waste Manifest system. Under the proposal, the agency seeks to establish standard forms and procedures and to permit waste handlers the choice of using an electronic manifest. The change will allow waste handlers to conduct nearly all the waste tracking and recordkeeping functions of the manifest electronically.

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Cutting the strings: process automation goes wireless

Article Abstract:

A key subject of discussion during the ISA Expo 2007 was process automation going wireless, which can lead to low-cost, low-poer radios and robust protocols for wireless data. One of the issues in the convergence of these technologies is standardization. The history of process automation standards and current standards efforts are given.

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