APTES改性玻璃滤料的制备及过滤性能研究  

Preparation and Filtration Performance of Glass Filter Media Modified by APTES

作　　者：赵建益 王侃鸣 刘益兵[1] 王红宇 ZHAO Jian-yi;WANG Kan-ming;LIU Yi-bing;WANG Hong-yu(School of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310023,China;College of Environment,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310023 [2]浙江工业大学环境学院,浙江杭州310014

出　　处：《中国给水排水》2020年第21期98-101,109,共5页China Water & Wastewater

摘　　要：采用3-氨丙基三乙氧基硅烷(APTES)对经破碎、筛分得到粒径为0.8~1.2 mm的废弃啤酒瓶玻璃滤料进行表面改性,制备出一种新型改性玻璃滤料。采用其过滤微污染原水,在进水浊度为4 NTU、腐殖酸浓度为5 mg/L、细小颗粒物(粒径范围为2~180μm)含量为9 551个/m L的条件下,改性玻璃滤料对浊度、腐殖酸、细小颗粒物的去除率分别达到62.5%、67%和66%,而石英砂的相应去除率仅为37.5%、55%和10%。改性最佳工艺条件如下:偶联剂浓度为10%、温度为110℃、反应时间为12 h。玻璃滤料改性后比表面积由0.326 m2/g变为3.451 m2/g,等电点的p H值由2.3提高到9,而石英砂的比表面积仅为0.293 m2/g,等电点的p H值仅为1。Surface of waste beer bottle glass filter media with particle size of 0.8-1.2 mm after crushing and screening was modified by 3-aminopropyl triethoxysilane(APTES)to prepare a new modified filtration medium.Filtration experiment of micro-polluted water showed that the removal rates of turbidity(initial concentration of 4 NTU),humic acid(initial concentration of 5 mg/L)and fine particles(initial concentration of 9551 pcs/mL with particle size of 2-180μm)by the modified glass filter media were 62.5%,67%and 66%,respectively.However,the removal rates of them by quartz sand were only 37.5%,55%and 10%,respectively.The optimum conditions of modification were coupling agent concentration of 10%,reaction temperature of 110℃and reaction time of 12 hours.After modification,specific surface area of the glass filter media increased from 0.326 m2/g to 3.451 m2/g,and isoelectric point pH increased from 2.3 to 9,which were much higher than those of quartz sand(0.293 m2/g and 1).

关 键 词：3-氨丙基三乙氧基硅烷 玻璃滤料 石英砂 改性 

分 类 号：TU991[建筑科学—市政工程]