摘要
首次采用碘量滴定法对工业废酸中强还原性的水合二氧化硫进行了准确测定,并采用120℃恒温简易蒸馏的方法快速去除了工业废酸中大部分的水合二氧化硫,使废酸中剩余的二氧化硫浓度降低至初始浓度的1/100以下(5.6×10-3mol/L),达到工业用酸标准,从而变废为宝。不仅解决了相关企业"三废"的排放压力,而且为企业创造了良好的经济和社会效益。
The iodine quantity method was firstly used to determine the concentration of sulfur dioxide hydration in industrial waste acid,and the concentration of sulfur dioxide hydration was greatly reduced with higher than 100 times by simple distillation at constant 120 ℃. With this method,the strong reducible industrial waste acid can be reused as commercial acid ,the pressure of wastes discharge in corresponding factories was reduced, and the economic and social benefits were also produced for them.
出处
《化学试剂》
CAS
CSCD
北大核心
2012年第10期916-918,共3页
Chemical Reagents
基金
浙江省科技厅科技计划分析测试基金资助项目(2011C37012)
浙江省实验教学示范中心实验教学改革项目资助项目
浙江省自然科学基金资助项目(LY12B06003)
关键词
碘量法
工业废酸
二氧化硫
蒸馏
iodine quantity method
industrial waste acid
sulfur dioxide
distillation
