A pretreatment is something which is applied to a feed in order to make a process or stage more effective.
A typical pretreatment prior to metal stripping usually includes a soak in a hot alkaline cleaner followedby thorough rinsing and cathodic activation in an electrocleaner.
A pretreatment is necessary to soften the cellulose prior to subjecting it to hydrolysis.
A pretreatment is something which is applied to a feed in order to make a process or stage moreeffective.