Abstract
Sodium alginate solution prepared from Eckloria cava at the optimum extracting condition was electrodialysed with three chambers under water cooling, depositing alginic acid in the middle chamber. The results obtained after 5 ampere-hours were as follows; current efficiency, 45.5%: electric energy consumption and yield of alginic acid, 76.5 KWH/kg. and 23%, respectively. It has been shown that ash content of the alginic acid prepared is less than 1%, while total nitrogen content is not much different as compared with one obtained by the two chamber method.
