Is there a way to liquefy a super absorbent polymer without using salt? I understand that once a SAP absorbs a liquid it becomes a type of gel and that this gel can be liquefied by applying salt, are there other methods to liquefy this gel without using salt?
change the pH to less than 3.   absorbents do not like low pH.
since absorbents  are a polymer of sodium acrylate.  lowering the 
pH covert  sodium acrylate to the acid form (acrylic acid) the acid form is not a super absorbent.