16444
Adsorption study revealed that both electrostatic attraction and hydrogen - bonding mechanisms contribute to adsorption of PAMs on kaolinite .
 Chemical: hydrogen; Chemical: PAMs; Chemical: kaolinite
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: hydrogen; Chemical: PAMs; Chemical: kaolinite