The phrase "a practical substitute for" is correct and usable in written English.
You can use it when discussing alternatives that can effectively replace something else in a practical manner.
Example: "In many cases, almond milk serves as a practical substitute for cow's milk in recipes."
Alternatives: "a viable alternative to" or "an effective replacement for".
The infusion of hip-hop wasn't just a practical substitute for a rhythm section.
Having corners instead of rounded edges, a tiny house is expensive to tow; it is not a practical substitute for a mobile home.
This was a gruelling experience in which she was at one point required to be covered from head to foot in spinach as a practical substitute for primeval slime.
These unique features of NSDPC electrodes suggest that they can serve as a practical substitute for graphite as a high performance anode material in LIBs.
Using either formula can be a practical substitute for SIG at the bedside, and the use of AGc did not affect the logistic regression model when substituted for SIG.
Then synchronization by light-signals could still have been regarded as a mere practical substitute for a notion of absolute simultaneity that stood on independent grounds, empirically as well as conceptually.
Since the early 1960s, silicon has become a practical substitute, virtually supplanting germanium as a material for semiconductor fabrication.
Manufacturers would then be required to conduct a scientific analysis to see whether safer chemicals could be used that would still be effective or whether no practical substitute for the dangerous compound is available.
Animal sentinels have been proposed as practical substitutes for resource-intensive surveillance systems to detect and provide early warning of the presence of pathogens, changes in the prevalence or incidence of disease/pathogens over time and to trigger disease response and control efforts (Rabinowitz et al. 2009; McCluskey 2003).
It is concluded that ensiled sugarcane tops is a practical alternative to substitute for sorghum stover in diets for growing finishing feedlot lambs.
