Extraction Techniques

The previous sections described, in a practical way, the theory and the physical chemical basis for extraction. The importance of the phase interface was noted, and it was emphasized that mass transfer is a function of several properties, such as diffusion, viscosity, density, interfacial tension, turbulence, etc. Extractions are more practically a function of those experimental parameters that affect diffusion, viscosity, etc. For example, temperature plays one of the largest roles in improving extraction yields (though selectivity may suffer), as does the particle size of solid samples. The geometry of the extraction system must also be considered.

Chemical extractions can take on a number of embodiments. This section will provide a brief overview of these (mostly analytical) extraction techniques. The most important, and/or newly developed, are discussed in detail in other articles. While the methods discussed here are categorized as 'liquid' or 'solid' methods, there is some degree of exchange and methods used predominantly for solids can also be adopted for liquids in many cases, for example.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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