HOW TO GET HIGHLY CONCENTRATED SALT SOLUTIONS INTO ACTIVATED CARBON PORES: THE INFLUENCE OF ION SIZE AND TYPE ON THEIR INTERACTIONS WITH ACTIVATED CARBON SURFACES

摘要

The interactions of activated carbon surfaces with concentrated salt solutions (LiCl, NaCl, KCl, KBr, KI, CH_3COOLi, CH_3COONa, and CH_3COOK) are explored for a microporous carbon with few acidic surface groups in an attempt to explain why some salts are attracted to the carbon surface while others are repelled. Soaking, imbibing, and contact angle studies were carried out. It was found that changing the cation has a small influence, with attraction to the carbon surface increasing as K