蚕沙提取物在盐溶液中的阻垢缓蚀性能研究  

Study on scale inhibition and corrosion inhibition of silkworm sand extract in brine solution

作　　者：柳鑫华 石春杰 张源 王瀛 罗宝晶 付占达 舒世立[1] 苏云凤 刘帅 王伊然 LIU Xinhua;SHI Chunjie;ZHANG Yuan;WANG Ying;LUO Baojing;FU Zhanda;SHU Shili;SU Yunfeng;LIU Shuai;WANG Yiran(Department of Chemistry,Tangshan Normal University,Tangshan 063000,China;Tangshan Key Laboratory of Green Specialty Chemicals,Tangshan 063000,China)

机构地区：[1]唐山师范学院化学系,河北唐山063000 [2]唐山市绿色专用化学品重点实验室,河北唐山063000

出　　处：《工业水处理》2024年第7期105-112,共8页Industrial Water Treatment

基　　金：河北省自然科学基金项目(D2022105004);唐山师范学院重点培养项目(ZDPY07)。

摘　　要：大多数合成缓蚀阻垢剂对环境的有害影响是研究环保型提取物的动机。采用红外光谱(FTIR)和紫外可见光谱(UV-vis)研究了蚕沙提取物(SSE)的主要成分;采用电导率、静态阻垢法,结合扫描电镜(SEM),研究了SSE作为阻垢剂在氯化钙盐溶液中的阻垢效果;采用电化学阻抗技术(EIS)和动电位极化曲线(PDP)研究其在模拟冷却水中的缓蚀性能。结果表明:SSE的主要成分为叶绿素;当SSE质量浓度达到30 mg/L以上时,对碳酸钙、硫酸钙的阻垢率都在90%以上,SSE可以抑制碳酸钙的过饱和,延长成核时间,并会使钙垢的晶型发生变化;SSE在盐溶液中对Q235钢具有良好的缓蚀效果,其缓蚀机理为SSE在Q235钢表面形成一层保护膜。SSE能起到阻垢、缓蚀双重作用,是一种潜在的新型、环境安全的缓蚀阻垢剂,适用于冷却水系统。The harmful effects of most synthetic corrosion inhibitors on the environment are the motivation for the study of environmentally friendly extracts.The main components of silkworm sand extract(SSE)were studied by infrared spectroscopy(FTIR)and ultraviolet visible spectroscopy(UV-vis).The scale inhibition effect of SSE as scale inhibitor in calcium chloride solution was studied by means of electrical conductivity,static scale inhibition and scanning electron microscopy(SEM).Electrochemical impedance(EIS)and potentiodynamic polarization curve(PDP)were used to study its corrosion inhibition performance in simulated cooling water.The results showed that chlorophyll was the main component of SSE.When the concentration of SSE was more than 30 mg/L,the scale inhibition efficiency of calcium carbonate and calcium sulfate was both more than 90%.SSE could inhibit the supersaturation of calcium carbonate,prolong the nucleation time,and change the crystal shape of calcium scale.SSE had a good corrosion inhibition effect on Q235 steel in salt solution,and its corrosion inhibition mechanism was that SSE formed a protective film on the surface of Q235 steel.SSE could play a dual role of scale inhibition and corrosion inhibition,which was a potential new,en⁃vironmentally safe corrosion and scale inhibitor for cooling water system.

关 键 词：蚕沙提取物 阻垢缓蚀剂 盐溶液 阻垢缓蚀机理 

分 类 号：TQ085[化学工程]