含硼聚硅氯化铁中铁的形态分布及转化  

Species Distribution and Transformation of Iron in Polymeric Ferric Silicate Chloride Containing Boron

作　　者：刘红[1] 张琳[1] 方月梅[1] 邵俊[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《武汉科技大学学报》2006年第4期362-364,371,共4页Journal of Wuhan University of Science and Technology

摘　　要：用Fe-Ferron遂时络舍比色法研究了含硼聚硅氯化铁（PFSCB）中铁离子的形态分布与转化，考察了nFe／nSi，nB/nSi,熟化时间和硅酸活化时间对铁的形态分布的影响。实验中发现，铁、硼和聚硅酸的加入能够提高PFSCB产品的聚合度；熟化时间延长rFec升高，但rFeb几乎保持不变；当nFe／nSi=1，nB／nSi=0.16，硅酸活化时间为80～120min时，活性最强的Feb的rFeb最大。The species distribution and transformation of iron in polymeric ferric silicate chloride containing boron （PFSCB） are studied by means of Fe-Ferron complexation timed spectrophotometry. The influence of Fe/ Si molar ratio, B/Si molar ratio, aging time of PFSCB and polymerization time of silicic acid is studied. It is found that the polymer of PFSCB can be raised by adding iron, boron and polysilicate ; with the increase in aging time of PFSCB, the content of Fe-c becomes higher and Fe-b keeps constant; when Fe/Si molar ratio is 1.0, B/Si molar ratio is 0. 16 and polymerization time of silicic acid is 80 - 120 min, the content of Fe-b becomes the highest.

关 键 词：含硼聚硅氯化铁 Fe—Ferron运时络合比色法 形态分布 

分 类 号：X522[环境科学与工程—环境工程]