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 at pharmaceutical manufacturers have the same duties as those of consumer goods manufacturers, but they have additional duties as well. Their focus is on developing new drugs or products to enhance the health of humans and animals.
Another growing field for chemical engineers is environmental engineering. Whether they are working on ways to clean up or prevent pollution, safely dispose of toxic waste, or manage a sewage treatment plant, there is no shortage of opportunities for a chemical engineer to work in environmental science.