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
贺广喜 1朱霞萍 1王虹 1赵平 2任维2
作者信息
- 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
- 折叠
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20mmol/100g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、KBH4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,60d内应用性能稳定.
Abstract
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,KBH4 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Key words
Ceramics and composites/Attapulgite/Nano iron/Benzalkoniumchloride/Methylene blue引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据