报道了双极性膜电渗析取代现行工艺中泡花碱转化成硅溶胶的酸化过程的研究.转化得到的硅溶胶中SiO２含量达到6%～10%，pH值在3以下，平均电流效率在55%～75%范围内，平均耗电低于1 kW*h/kg(每千克硅溶胶)，制得的硅溶胶产品符合工业要求.
A new technology, bipolar membrane electrodialysis(BME), was developed to convert sodium silicate(Na２SO３） into silicasol (H２SO３）. By optimizing the operation condition, one can easily obtain the product with desired SiO２ content about 6%～10% and pH value about 3. In this new process, the average efficiency of electric current is 55%～75% and the power cost is less than 1 kW*h/(kg silicasol). So it provides a attractive method for the production of silicasol.
参考文献
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