淀粉及改性淀粉的阻垢性能测试  

Starch and Modified Starch Scale Performance Testing

作　　者：高升[1] 刘玉玲[1] 刘利[1] 

机构地区：[1]西安理工大学西北水资源与环境生态教育部重点实验室,陕西西安710048

出　　处：《环境科学与技术》2011年第5期131-134,共4页Environmental Science & Technology

基　　金：中国博士后科学基金(20090451163);陕西省教育厅基金(09JK649);陕西省重点学科建设资金项目资助

摘　　要：实验利用浓硫酸氧化淀粉制备了改性淀粉,其颜色为棕红色;然后在不同浓度、温度、Ca2+浓度、pH下,对淀粉及改性淀粉的阻垢性能进行了测试。结果发现,淀粉高效阻垢的最佳浓度为8mg/L,最佳温度为70℃,在此最佳浓度、最佳温度下对应阻垢效率为23.3%;改性淀粉高效阻垢的最佳浓度为0.61mg/L,最佳温度为80℃,在此最佳浓度、最佳温度下对应阻垢效率为84.7%;对比可见,改性淀粉用量减少到淀粉用量的1/13,但效率提高了3.5倍。淀粉及改性淀粉的阻垢效率都随着Ca2+浓度及pH的增加而减小,说明Ca2+浓度、pH是影响阻垢剂阻垢效率率的重要因素。The experiment we use concentrated sulfuric acid to oxidize starch in order to prepare modified starch that the colour is brown-red,and then we did the starch and modified starch scale performance testing in different concentrations,temperature,Ca2＋ concentration,pH.It was found that the best concentration of efficient starch scale is 8 mg/L,the best temperature is 70 ℃,under this best concentration and tmperature the corresponding inhibition rate is 23.3%.The best concentration of efficient modified starch scale is 0.61 mg/L,the best temperature is 80 ℃,under this best concentration and tmperature the corresponding inhibition rate is 84.7%.Comparison shows that the amount of modified starch is reduced to 1/13 of the amount of the starch,but the efficiency is improved by 3.5 times.The inhibition rate of starch and modified starch decreases with the increase of Ca2＋ concentration and pH,it was indicated that Ca2＋ concentration and pH are the important factors that affect the inhibition rate of scale inhibitor.

关 键 词：绿色阻垢剂 淀粉 改性淀粉 阻垢 

分 类 号：X792[环境科学与工程—环境工程]