摘要
选用二价钙离子蔗糖溶液为再生剂,再生蔗糖脱色后的强碱性阴离子交换纤维,研究了再生液的配比、再生温度、再生液用量、再生液流速等因素对再生效果的影响,结果表明配比为0.5 mol/L CaCl2+8 g/L CaO+6.5°Bx蔗糖的再生液在70～80℃温度下,再生剂的用量约为脱色糖汁的一半,流速应低于脱色时的流速时,再生效果优于传统的钠盐再生剂的再生效果,重复再生后的纤维脱色率能保持稳定,交换容量下降少,且再生液能回收利用,废水排放量小,是一种环保型再生液。
The Ca^2＋ salt solution as a new regenerant was presented in this paper. The influences of the calcium salt proportioning, temperature, dosage and flow rate on anion exchange fiber regeneration were studied. High regeneration can be obtained with 0.5 mol/L CaCl2＋8 g/L CAO＋6.5°Bx sucrose solution at 70-80 ℃, the dosage of the Ca^2＋ salt solution was about half of the raw decoloring syrup, the regenerant flow rate should be lower than that of the raw decoloring syrup. It was shown that stable decolorization rate and lower decline in exchange capacity could be achieved with the new regenerant. It performed more effectively than the traditional sodium salt regenerant with less discharge of waste water.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2007年第1期73-76,共4页
Chemical Industry and Engineering Progress
基金
国家863高科技研究发展计划资助项目(No.2002AA245091)
