凹凸棒石/纳米铁复合材料的制备工艺及对亚甲基蓝废水的处理  

Preparation Process of Attapulgite/Nano Iron Composite and its Removal Application to Methylene Blue

作　　者：贺广喜 朱霞萍[1] 王虹 赵平 任维 HE Guangxi;ZHU Xiaping;WANG Hong;ZHAO Ping;REN Wei(College of Materials and Chemistry and Chemical Engineering,Chengdu University of Technology,Chengdu 610059,Sichuan,China;105 Geological Brigade,Guizhou Bureau of Geology&Mineral Exploration&Development,Guiyang 550018,Guizhou,China)

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059 [2]贵州省地质矿产勘查开发局105地质大队,贵州贵阳550018

出　　处：《矿产综合利用》2024年第2期8-15,22,共9页Multipurpose Utilization of Mineral Resources

基　　金：贵州省科技厅([2019]1424)资助。

摘　　要：这是一篇陶瓷及复合材料领域的论文。亚甲基蓝(MB)是工业染料废水中的典型污染物,不经处理任意排放会给水体带来非常大的危害。本文通过对凹凸棒石灼烧、有机超声改性和原位负载纳米铁制备了凹凸棒石/纳米铁复合材料(DDBAC/ATP/nZVI)。得到了复合材料的制备工艺:凹凸棒石原土经300℃焙烧1.5 h后加入20 mmol/100 g十二烷基二甲基苄基氯化铵(DDBAC),超声20 min,然后用液相还原法负载纳米铁,铁土比为1∶3、KBH_(4)浓度为0.25 mol/L、反应时间为3 h。XRD、IR、SEM、BET、XPS等表征证实了DDBAC和纳米铁成功负载到凹凸棒石表面。复合材料对亚甲基蓝的较大吸附去除量为114.94 mg/g,60 d内应用性能稳定。This is an article in the field of ceramics and composites.Methylene blue is a typical pollutant industrial wastewater.It will bring great harm to the water body if it is discharged arbitrarily without treatment.We prepared a kind of attapulgite/nano iron composite(DDBAC/ATP/nZVI),that the attapulgite was roasted,organic modified and then loaded with nano iron(nZVI)by liquid-phase reduction.The optimum preparation process is obtained:attapulgite raw soil is calcined at 300℃for 1.5 h,20 mmol/100 g benzalkonium chloride(DDBAC)is added,then ultrasonic is used for 20 min,and then nano iron is loaded by liquid-phase reduction method.The ratio of iron to soil is 1:3,KBH_(4) concentration is 0.25 mol/L and reaction time is 3 h.The XRD,FTRI,SEM,XPS,BET confirm that DDBAC and nano iron are successfully loaded on the surface of attapulgite.The maximum removal of methylene blue by DDBAC/ATP/nZVI is 114.94 mg/g,and the application performance of the DDBAC/ATP/nZVI remains stable within 60 days.

关 键 词：陶瓷及复合材料 凹凸棒石 纳米铁 十二烷基二甲基苄基氯化铵 亚甲基蓝 

分 类 号：TD989[矿业工程—选矿]