[1]郭燕飞,高 强,李 轶*.混凝土负载C,N-TiO2 对有机磷杀虫剂的吸附和降解性能研究[J].江苏水利,2018,(02):41-48.
 GUO Yanfei,GAO Qiang,LI Yi*.Study on adsorption and degradation of organophosphorus pesticides by C and N-TiO2 supported on concrete[J].JIANGSU WATER RESOURCES,2018,(02):41-48.
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混凝土负载C,N-TiO2 对有机磷杀虫剂的吸附和降解性能研究()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年02期
页码:
41-48
栏目:
生态与环境
出版日期:
2018-03-10

文章信息/Info

Title:
Study on adsorption and degradation of organophosphorus pesticides by C and N-TiO2 supported on concrete
文章编号:
1007-7839(2018)02-0041-08
作者:
郭燕飞高 强李 轶*
河海大学环境学院浅水湖泊综合治理与资源开发教育部重点实验室,江苏 南京 210098
Author(s):
GUO YanfeiGAO QiangLI Yi*
Key Laboratory of Integrated Management and Resource Exploitation of Shallow Lakes,Ministry of Education,School of Environmental Science,Hohai University,Nanjing 210098,Jiangsu
关键词:
面源污染混凝土吸附可见光催化降解敌百虫抗压强度抗渗性能
Keywords:
non-point source pollutionconcreteadsorptionvisible light catalytic degradation trichlorfoncompressive strengthimpermeability
分类号:
X53
文献标志码:
B
摘要:
本文制备了一种负载碳、氮共掺杂二氧化钛(C,N-TiO2)的混凝土(C,N-TiO2/Ct),研究了光催化剂负载量和固化时间对其吸附、降解敌百虫的影响,测试了混凝土的抗压强度和抗渗性能。结果表明,与普通混凝土(Ct)和TiO2/ 混凝土(TiO2/Ct)相比,C,N-Ti O2/Ct 对敌百虫有较高的降解效率,并随着C,N-TiO2 的增加而逐渐提高,但其吸附效率却相对较低。混凝土对敌百虫的降解和吸附效率随固化时间的增加而降低,固化3 d 的5%C,N-TiO2/Ct 吸附率比Ct 低8.8%,但对敌百虫的降解率比Ct 高15.4%。此外,混凝土的抗压强度随催化剂含量和固化时间的增加而提高,固化28 d 的5% C,N-TiO2/Ct 的抗压强度与Ct 相比提高了24.8%。混凝土的抗渗性能随着C,N-TiO2 含量的增加呈先升高后降低的趋势,其中2.5% C,N-TiO2/Ct 抗渗性能最高,比Ct 增加了36.2%。因此,光催化混凝土具有控制河流面源污染的应用潜力。
Abstract:
A kind of concrete (C, N-TiO2/Ct) loaded with carbon and nitrogen co-doped titanium dioxide (C, N-TiO2) was prepared. The effects of photocatalyst loading and curing time on the adsorption and degradation of trichlorfon were studied, and the compressive strength and impermeability of concrete were tested. The results showed that compared with ordinary concrete (Ct) and TiO2/ (TiO2/Ct), C concrete, N-TiO2/Ct had higher degradation efficiency on trichlorfon and gradually increased with the increase of C and N-TiO2, but its adsorption efficiency was relatively low. Concrete degradation and adsorption efficiency of trichlorfon decreased with increasing curing time, and the adsorption rate of 5% C, N-TiO2/Ct curing 3 days was 8.8% lower than Ct, but the rate of degradation of trichlorfon was 15.4% higher than Ct. In addition, the compressive strength of concrete increases with the increase of catalyst content and curing time, and the compressive strength of 5% C,N-TiO2/Ct increased by 24.8% compared with Ct after curing 28 days. The impermeability of concrete increased first and then decreased with the increase of C, N-TiO2 content, among which 2.5% C,N-TiO2/Ct had the highest impermeability, which was 36.2% higher than Ct. Therefore, photocatalytic concrete had the potential to control the non-point source pollution of rivers.

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备注/Memo

备注/Memo:
收稿日期:2017-09-30
基金项目:江苏省水利科技项目(2016016);国家自然科学基金(51779076)
作者简介:郭燕飞(1993-),男,硕士研究生,主要从事水污染控制和水资源保护研究。
通讯作者:李轶(1975-),男,教授,博士研究生,主要从事污水处理与资源化、水环境治理与修复、水资源保护研究。
更新日期/Last Update: 2018-02-15