PBTCA-Tyr协同改性聚环氧琥珀酸及对氟垢的阻垢性能  

Synergistic Modification of Poly(epoxysuccinic acid) with PBTCA-Tyr and Scale Inhibition Properties Against Fluoride Scale

作　　者：张益豪 秦哲[1] 白昕竹 马丙太 赵春霞[1] 路达[1] Yihao Zhang;Zhe Qin;Xinzhu Bai;Bingtai Ma;Chunxia Zhao;Da Lu(School of Eco-Environment,Hebei University,Baoding 071000,China;Hebei Institute of Environmental Geology Exploration,Shijiazhuang 050011,China)

机构地区：[1]河北大学生态环境系,河北保定071000 [2]河北省地质环境监测院,河北石家庄050011

出　　处：《高分子材料科学与工程》2024年第12期127-136,共10页Polymer Materials Science & Engineering

基　　金：河北省自然科学基金面上项目(E2020201036)。

摘　　要：为了缓解反渗透膜的CaF2垢堵塞情况,使用2-磷酸丁烷-1,2,4-三羧酸(PBTCA)和酪氨酸(Tyr)对聚环氧琥珀酸(PESA)进行改性得到PBTCA-PESA和PBTCA-Tyr-PESA。通过表征确定了其结构和热稳定性。采用静态实验和动态实验测试阻垢性能。结果表明,静态实验中,投加量为200 mg/L时,PBTCA-PESA和PBTCA-Tyr-PESA对CaF2的阻垢率分别为94.92%和98.72%,具有络合Ca2+的能力,能够延长结晶诱导时间;动态实验中,膜比通量下降率分别为34%和27%,展现出较好的分散CaF2性能,有效缓解了膜堵塞。X射线衍射和扫描电镜表征显示,PBTCA-PESA和PBTCA-Tyr-PESA可以引起CaF2晶体的不规则生长,破坏晶体的形成并改变晶型,主要阻垢机理为分散作用、晶格畸变及螯合作用。In order to alleviate the CaF2 scale blockage of reverse osmosis membranes,poly(epoxysuccinic acid)(PESA)was modified with 2-phosphobutane-1,2,4-tricarboxylic acid(PBTCA)and tyrosine(Tyr)to obtain PBTCA-PESA and PBTCA-Tyr-PESA.The static and dynamic experiments were used to test the scale inhibition performance,and the results show that in the static experiment,the scale inhibition rates of PBTCA-PESA and PBTCA-Tyr-PESA on CaF2 are 94.92%and 98.72%,respectively,at the dosage of 200 mg/L,which possess the ability of complexing Ca2+to prolong the time of crystalline induction;and in the dynamic experiment,the decrease rates of the specific flux of the membrane are 34%and 27%,showing better performance in dispersing CaF2 and effectively alleviating membrane blockage.XRD and SEM characterization show that PBTCA-PESA and PBTCA-Tyr-PESA can cause the irregular growth of CaF2 crystals,destroy the crystal formation and change the crystalline shape,and the main scale inhibition mechanisms are dispersive effect,lattice aberration,and chelating effect.

关 键 词：酪氨酸 2-磷酸丁烷-1 2 4-三羧酸 聚环氧琥珀酸 氟化钙垢 动态实验 阻垢机理 

分 类 号：TQ085.4[化学工程]