Adsorption of Chromium(VI) from Aqueous Solutions by Coffee Polyphenol-Formaldehyde/Acetaldehyde Resins

Table 2

Composition of coffee polyphenol-acetaldehyde (CAA) resins.

Resin code	Coffee powder (g)	Acetaldehyde (mL)	Ammonia (mL)
CAA 01	4	5	10
CAA 02	4	10	10
CAA 03	4	15	10
CAA 04	4	20	10
CAA 05	4	25	10