Abstract:

The organic content of sludge is characterized by high-protein and low-fat，so the sludge can be used to produce protein solution，and then made into protein foaming agent. With the purpose of improving the foaming performance of the agent，twelve kinds of additives belonging to three main categories，inorganic，small，and large organic molecules were selected and their effects on the foaming performance of the protein solution were examined. By comparing the forming and stabilized bubbling performance，zinc sulfate，sugar and Arabic gum were the three kinds of additives which could significantly enhance the activity of protein molecules，increase liquid viscosity，or improve film strength，and improve the foaming performance of the protein solution.

摘要：

污泥中有机物含量呈现高蛋白、低脂肪的特征，可以从中提取蛋白质，制成蛋白发泡剂。为提高发泡剂的泡沫性能，选取了无机、有机小分子和有机大分子3大类共12种添加剂并考察了它们对蛋白溶液泡沫性能的改善效果。通过比较加入添加剂后蛋白液的发泡和稳泡性能，得出硫酸锌、蔗糖和阿拉伯树胶3种添加剂在提高蛋白分子活性、增加液相黏度、提高液膜强度方面效果较明显。从而确定为可对蛋白液泡沫性能起到显著改善作用的3种添加剂。