id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
hjic-343	Bélafi-Bakó, K.; Molnár, E.; Csanádi, Z.; Nemestóthy, N.	Comparative Study on Electrodialysis Systems for Galacturonic Acid Recovery	2012	3	.pdf	application/pdf	1579	70	46	Table 1: Parameters of the two-step ED system for galacturonic acid recovery and desalination Features of the modules Conventional asymmetric ED Combined with BP membrane Membranes 3 cation selective, 2 anion selective 2 cation selective, 1 bipolar Membrane surface area 0.0225 m2 0.0135 m2 Volumes of solutions feed (diluate): 100 ml, concentrate: 150 ml feed (acid): 100 ml, alkali: 150 ml Recirculation rate 32 ml/min 32 ml/min Electrode solution 200 ml 0.5 mol/l Na2SO4 200 ml 0.5 mol/l Na2SO4 Recirculation rate 60 ml/min 60 ml/min Applied voltage 5 V 5 V Processes galacturonate anions and Na cations pass through the membranes to accumulate in the concentrate galacturonate anions remain, BP provides H+, acid formation Na cations pass through the membranes, form alkali solution Final results concentrate rich in Na-galacturonate formation of galacturonic acid and NaOH solutions Table 2: Parameters of the scaled-up complex ED system Features of the module Scaled-up complex module Membranes 10 anion selective, 11 cation selective, 10 bipolar Membrane surface area 0.31 m2 Volumes of solutions feed (diluate): 400 ml, acid: 400 ml, alkali: 450 ml Recirculation rate 380 ml/min Electrode solution 500 ml 0.1 mol/l Na2SO4 Recirculation rate 500 ml/min Applied voltage 36 V Processes both galacturonic anions and Na cations pass through the membrane, formation of acid and alkali solutions Final results recovery and desalination of galacturonic acid in one step Results As a summary, we concluded that electrodialysis is a suitable method for recovery, desalination and purification of galacturonic acid from hydrolysates of various pectins.	cache/hjic-343.pdf	txt/hjic-343.txt