Waste, removal organic

Dehydration The growing use of isopropanol as a clean-rinse fluid in microelectronics produces significant quantities of an 8.5-90 percent isopropanol waste. Removing the water and trace contan ii-nants is required before the alcohol can be reused. Pervaporation produces a 99.99 percent alcohol product in one step. It is subsequently polished to remove metals and organics. In Europe, dehydration or ethanol is the largest pei vaporation application. For the very large ethanol plants typical of the United States, pei vaporation is not competitive with thermally integrated distillation. 

Case 2 - The Hyde Park Landfill site, located in an industrial complex in the extreme northwest corner of Niagara, New York, was used from 1953 to 1975 as a disposal site for an estimated 80,000 tons of chemical waste, including chlorinated hydrocarbons. A compacted clay cover was installed in 1978 over the landfill and a tile leachate collection system was installed in 1979. Hazardous compounds such as ortho-, meta- and para-chlorobenzoic acid toluene ortho- and meta-chlorotoluene 3,4-dichlorotoluene and 2,6-dichlorotoluene were detected in the leachate (Irvine et al., 1984). Since 1979, the existing leachate treatment system has used activated carbon as the technology for removing organic carbon. Although... 

Method A packed-bed throwaway system to remove organic pollutants from oily waste stream. System component A contactor system, and a pump station designed for a contact time of 30 min and hydraulic loading of 162 L/min/m2 (4gpm/ft2). 

Ventron A process for removing mercury from aqueous wastes containing organic mercury compounds. Chlorine is passed in, converting organic mercury compounds to inorganic compounds, and the mercury is then reduced to the metallic state with sodium borohydride. 

In the pesticide industry, steam-stripping has proven effective for removing groups of priority pollutants such as volatile aromatics, halomethanes, and chloroethanes as well as a variety of nonpriority pollutant compounds such as xylene, hexane, methanol, ethylamine, and ammonia [11]. Thus, this process is used to reduce or remove organic solvents from waste... 

This technology can treat both acidic and basic solutions. It has the ability to remove organics, inorganics, radionuclides, and heavy metals from contaminated aqueous streams and is capable of treating process wastes and mixed wastes as well. 

Rohm and Flaas Company has developed Amberlite polymeric adsorbent resins that can be used to remove organic compounds from contaminated groundwater, aqueous wastes, and vapor-phase wastes. Amberlite XAD-4 is a crosslinked polystyrene-type polymer. It is hydrophobic and has no ionic functional groups incorporated into its resin structure. The material is most useful in removing low-molecular-weight organic substances from aqueous systems. Amberlite XAD-4 has been commercially available since the 1970s. 

The developer estimates that activated charcoal wastes, such as used to remove organic vapors during remediation efforts, can be reprocessed using this technology for 0.77/kg. New activated charcoal costs 4.14/kg, resulting in a savings of 3.41/kg by use of the STD (D15292L, p. 10). 

SQI systems can achieve destruction and removal efficiencies (DREs) of up to 99.9999%. System can treat wastes containing organic contaminants, heavy metals, and some inorganic compounds. 

Organic waste removal. It is assumed that the organic waste is degraded into the following steps ... 

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