In many cases non-zinc anodes outperform actual zinc anodes, depending upon the type of metal you need to protect and the nature of the water in which the metal being protected is immersed. It all has to do with the voltage of the anode when referenced against a standard.
Chemical engineers use their knowledge of chemistry, physics, engineering and biology to find solutions to challenges involving things like materials manufacturing and food processing.
A chemical engineer can find employment with variety of companies, and despite the differences in the actual job duties, the job titles are often similar. Chemical engineers may be called process engineers, blending engineers or research engineers, for example. However, a blending engineer at a plastics manufacturer has different duties than one at an oil refinery, for example, so it is beneficial to examine what chemical engineers do in various employment settings.