摘要
在以水为溶剂 ,不用引发剂 ,反应时间 4h ,温度 70℃ ,反应物m (香草醛 )∶m (壳聚糖 ) =1∶1,pH =6的条件下 ,香草醛改性壳聚糖 (VCG)的接枝率平均达到 30 %。VCG对洗毛废水中SS和COD的去除率分别达到 96 33%和 6 5 8% ,去除率比用壳聚糖提高了 5 5 73%。在去除率均为96 .0 %时 ,VCG的投加量是壳聚糖的六分之一 ,吨水处理成本是壳聚糖的三分之一。
A graft polymer VCG of 30% graft-percentage can be prepared by graft reaction in water at 70°C, pH=6 for 4 h with chitosan and vanillin in mass ratio m (vanillin aldehyde):m (chitosan) = 1:1. The effect of VCG in wool-washing wastewater treatment is that SS and COD are cut down by 96.33% and 65.8% respectively, 55.73% higher than that of chitosan. The quantity of VCG put into wastewater is one-sixth the quantity of chitosan at the same level of cutting SS down by 96% and the fee of VCG for treating per-ton wastewater is one-third that of chitosan.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2001年第8期464-466,478,共4页
Fine Chemicals
基金
河北省科委科学技术与发展计划课题 (982 76 7470 )
