Metals advantage/drawbacks

To summarize this section about metallic coatings, let us recall their advantages and drawbacks. High reflectances (>90%) are obtained... 

We should also compare the scope of the technologies for different waste streams. With the exception of Brocat which only handles HBr, the systems can be used with HBr or metal salt streams. However, H2O2 has an advantage in terms of handling impurities in the steam such as low levels of organics. Chlorine and chlorate will suffer from reduced efficiency due to side reactions Brocat has potential problems with catalyst poisoning. H2O2 suffers no major drawbacks in this respect. 

The reductive carbonylation has an advantage of low feedstock cost. A wide range of homogenous metal complexes have been tested for both reactions (1-16). The major drawback of the use of metal complex catalysts is the difficulty of catalyst recovery and purification of the reaction products (12). In addition, the gaseous reactants have to be dissolved in the alcohol/amine mixture in order to have an access to the catalyst. The reaction is limited by the solubility of the gaseous CO and 02 reactants in the liquid alcohol reactant (17). 

This section describes the atomization processes and techniques for metal droplet generation. Advantages and drawbacks of the atomization systems are discussed along with typical ranges of operation conditions, design characteristics, and actual and potential applications. Commonly used atomization media and their thermophysical properties are also included. 

The combination of simple processes from plastic and metal technologies. Each material has its advantages and drawbacks. Hybrids that closely associate two or more families benefit from their best properties and mask their weaknesses. 

SOURCE Mostly from C. Vogt and G. L Klunder, "Separation of Metal Ions by Capillary Electrophoresis-Diversity. Advantages, and Drawbacks of Detection Methods," Fresenius J. Anal. Chem. 2001, 370,316. 

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