9785
Adsorption , surface precipitation , ion exchange and complexation can be suggested as mechanisms for the As ( V ) removal from the solution phase onto the surface of SCB - HFO .
 As ( V ), HFO
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 As ( V ), HFO