USE OF STRONG ACID RESIN PUROLITE C100E FOR REMOVING PERMANENT HARDNESS OF WATER – FACTORS AFFECTING CATIONIC EXCHANGE CAPACITY
BOGDAN BANDRABUR ,
RAMONA-ELENA TATARU-FĂRMUŞ ,
LILIANA LAZĂR ,
LAURA BULGARIU ,
GHEORGHE GUTT
Affiliations
BOGDAN BANDRABUR
.”Stefan cel Mare” University of Suceava, Faculty of Food Engineering, 13 University Street, 720229 - Suceava, Romania
RAMONA-ELENA TATARU-FĂRMUŞ
”Gheorghe Asachi” Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, 73 Prof. dr. doc. D. Mangeron Street, 700050 - Iasi, Romania
LILIANA LAZĂR
”Gheorghe Asachi” Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, 73 Prof. dr. doc. D. Mangeron Street, 700050 - Iasi, Romania
LAURA BULGARIU
”Gheorghe Asachi” Technical University of Iasi, Faculty of Chemical Engineering and Environmental Protection, 73 Prof. dr. doc. D. Mangeron Street, 700050 - Iasi, Romania
GHEORGHE GUTT
.”Stefan cel Mare” University of Suceava, Faculty of Food Engineering, 13 University Street, 720229 - Suceava, Romania
This paper experimentally investigates the performance and capacity of Purolite C100E commercial resin recommended for water softening applications in the food industry. The practical ion exchange capacity and the softening process efficiency are studied in batch mode as a function of the sorption specific process factors. Optimum operation conditions were determined as initial pH 7.1, resin dose 8 g dry resin•L-1, temperature 25 oC, contact time of 360 min, and in those conditions the retention capacity for the Ca2+ ions is 17.18 mg•g-1 that corresponds to a removal efficiency equal to 85.7%.
