[1]马红芳,杨浩宇,陈思颖,等.NTA强化Fe(Ⅱ)/PMS体系降解橙黄G的效能与机制[J].华侨大学学报(自然科学版),2023,44(2):222-232.[doi:10.11830/ISSN.1000-5013.202212021]
　MA Hongfang,YANG Haoyu,CHEN Siying,et al.Efficiency and Mechanism of NTA Enhanced Fe(Ⅱ)/PMS System for Degradation of Orange G[J].Journal of Huaqiao University(Natural Science),2023,44(2):222-232.[doi:10.11830/ISSN.1000-5013.202212021]
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NTA强化Fe(Ⅱ)/PMS体系降解橙黄G的效能与机制()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第44卷
期数:
2023年第2期
页码:
222-232
栏目:
出版日期:
2023-03-14

文章信息/Info

Title:
Efficiency and Mechanism of NTA Enhanced Fe(Ⅱ)/PMS System for Degradation of Orange G
文章编号:
1000-5013(2023)02-0222-11
作者:
马红芳1; 2;  杨浩宇1;  陈思颖1;  陈秀峰1; 许冬梅3;  董冬吟3;  邹景1;  张建林4
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 华侨大学 化工学院, 福建 厦门 361021;3. 福建省泉州环境监测中心站, 福建 泉州 362046;4. 山东省潍坊市市政工程设计研究院有限公司, 山东 潍坊 261061
Author(s):
MA Hongfang1; 2;  YANG Haoyu1;  CHEN Siying1;  CHEN Xiufeng1;  XU Dongmei3;  DONG Dongyin3;  ZOU Jing1;  ZHANG Jianlin4
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; 3. Quanzhou Environmental Monitoring Center Station of Fujian, Quanzhou 362046, China; 4. Weifang Municipal Engineering Design and Research Institute Limited Company of Shandong, Weifang 261061, China
关键词:
氨基三乙酸;  二价铁;  过一硫酸盐;  硫酸根自由基;  橙黄G
Keywords:
nitrilotriacetic acid;  ferrous iron;  peroxymonosulfate;  sulfate radical;  orange G
分类号:
X703.1
DOI:
10.11830/ISSN.1000-5013.202212021
文献标志码:
A
摘要:
针对二价铁/过一硫酸盐(Fe(Ⅱ)/PMS)体系存在近中性pH条件下氧化效能低的问题,采用氨基三乙酸(NTA)强化Fe(Ⅱ)/PMS体系降解橙黄G(OG),研究NTA/Fe(Ⅱ)/PMS体系中OG降解的效能和机制,考察NTA,Fe(Ⅱ),PMS等反应物浓度和溶液pH值对OG降解效能的影响.实验结果表明:当pH=6.5时,NTA可显著强化Fe(Ⅱ)/PMS体系的氧化效能,OG的去除率从11.7%提高到92.5%,NTA的加入提高了溶液中有效活化剂的浓度,促进PMS分解生成活性物质;NTA/Fe(Ⅱ)/PMS体系中主导的活性物质为Fe(Ⅳ)和SO-4·,二者对体系氧化效能的贡献分别为72.0%和28.0%;增加NTA,Fe(Ⅱ)和PMS的浓度有助于OG的降解,但当三者浓度分别超过1.5,1.5,2.0 mmol·L-1时,出现抑制现象;引入NTA既提高了Fe(Ⅱ)/PMS体系在近中性pH条件下的氧化能力,又拓宽了该体系的pH应用范围.
Abstract:
Aiming at the problem that low oxidation efficiency of ferrous/peroxymonosulfate(Fe(Ⅱ)/PMS)system under near neutral pH condition, nitrilotriacetic acid(NTA)was applied to enhance the degradation of orange G(OG)in Fe(Ⅱ)/PMS system, and the efficiency and mechanism of the OG degradation, the effects of reagent concentrations such as NTA, Fe(Ⅱ), PMS and solution pH value on the degradation efficiency of OG were studied in NTA/Fe(Ⅱ)/PMS system. The experimental results showed that NTA could significantly enhance the oxidation efficiency of Fe(Ⅱ)/PMS system at pH 6.5, and the removal efficiency of OG increased from 11.7% to 92.5%. The addition of NTA increased the concentration of effective activator in the solution and thus promoted the decomposition of PMS to generate active substances. The dominant active substances in NTA/Fe(Ⅱ)/PMS system were Fe(Ⅳ)and SO-4·, which contributed 72.0% and 28.0% to the oxidation efficiency of the system respectively. Increasing the concentration of NTA, Fe(Ⅱ)and PMS could facilitate the degradation of OG, but negative effects were observed when NTA, Fe(Ⅱ), PMS concentration were over 1.5, 1.5, 2.0 mmol·L-1, respectively. The introduction of NTA not only improved the oxidation capacity of Fe(Ⅱ)/PMS system at near neutral pH, but also broadened the pH application range of the system.

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备注/Memo

备注/Memo:
收稿日期: 2022-12-16
通信作者: 邹景(1986-),男,副教授,博士,主要从事水处理技术的研究.E-mail:zoujing@hqu.edu.cn.
基金项目: 福建省厦门市青年创新基金资助项目(3502Z20206007); 福建省泉州市科技计划项目(2022NS010)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2023-03-20