Cyanides, inorganic, solid

This section describes the treatment technologies currently in use to recover or remove wastewater pollutants normally found at coil coating facilities. The treatment processes can be divided into six categories recovery techniques, oil removal, dissolved inorganics removal, cyanide destruction, trace organics removal, and solids removal.5-14 Adoption of specific treatment processes will depend on the following ... 

In addition to gasoline, CFC, and so on, various other organic and inorganic compounds such as heavy metals, sulfides, and cyanides on the USEPA Priority Pollutants List, and subject to various water quality criteria, guidelines, etc., when released can also contaminate the soil. The contaminated soil then becomes a hazardous solid waste which must be properly disposed of [63-86]. 

The facile redox properties of the complexes in solution suggest that they may be capable of charge transport in the solid state. The terminal substituents can be changed to alter both the electronic and steric properties of the ligand, and thus provide a measure of control of the resulting complex which is absent from purely inorganic ligands such as cyanide or oxalate. 

The branch of chemistry that deals with all other compounds is called inorganic chemistry, meaning not organic. Carbonates, cyanides, carbides, sulfides, and oxides of carbon are classified as inorganic compounds. Geologists call these compounds minerals. A mineral is an element or inorganic compound that is found in nature as solid crystals. Minerals usually are found mixed with other materials in ores. An ore is a material from which a mineral can be removed at a reasonable cost. In other words, the cost of extraction cannot approach or exceed the economic value of the mineral. 

Germanium [7440-56-4] M 72.6, m 937 , 925-975 , b 2700 , d 4 5.3. Copper contamination on the surface and in the bulk of single crystals of Ge can be removed by immersion in molten alkali cyanide undCT N2. The Ge is placed in dry K and/or Na cyanide powder in a graphite holder in a quartz or porcelain boat. The boat is then inserted into a heated furnace which, after a suitable time, is left to cool to room temperature. At 750°, a 1mm thickness of metal requires about Iminute, whereas 0.5cm needs about half hour. The boat is removed from the furnace, and the solid samples are taken out with plastic-coated tweezers, carefully rinsed in hot water and dried in air [Wang J Phys Chem 60 45 1956, Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 712 7963]. Care with the use of cyanide. 

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