摘要
以AlCl3·6H2 O ,FeCl3·6H2 O ,Na2 CO3,盐酸和硅酸钠为原料制备了不同碱化度B及不同n(Al)∶n(Fe)∶n(Si)摩尔比的系列聚合硅酸铝铁絮凝剂 (PAFSC) ,采用Fe -Ferron逐时络合比色法研究了PAFSC中铁的形态分布情况 ,考察了熟化时间、制备工艺及n(Al)∶n(Fe)∶n(Si)对PAFSC中铁的形态分布的影响情况。研究结果表明 :随着熟化时间的延长 ,铁和聚硅酸摩尔数的增加 。
A series of poly\|aluminum\|ferric\|silicate\|chloride (PAFSC) which has different basicities and n (Al)∶ n (Fe)∶ n (Si)molar ratio have been prepared with AlCl\-3·6H\-2O,FeCl\-3·6H\-2O,Na\-2CO\-3,hydrochloric acid and Na\-2SiO\-3,and the species distribution and transformation of iron in PAFSC has been studied by means of Fe\|Ferron complexation timed spectrophotometry.The influence of the aging time,preparation method,and n (Al)∶ n (Fe)∶ n (Si)molar ratio has also been examined.The results showed that: with the increasing of aging time and the content of iron and polysilicic acid,the species of iron in PAFSC changes from lower polymer to higher polymer.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2002年第1期13-15,37,共4页
Research of Environmental Sciences
基金
教育部科学技术研究重点资助项目 ( 990 71)
关键词
聚合硅酸铝铁
PAFSC
混凝剂
络合比色法
形态分布
转化
废水处理
poly\|aluminum\|ferric\|silicate\|chloride (PAFSC)
Fe\|Ferron complexation timed spectrophotometry
species distribution
