二价铁活化过碳酸钠对磺胺甲唑的去除

doi:10.16085/j.issn.1000-6613.2017-2567

化工进展 ›› 2018, Vol. 37 ›› Issue (09): 3635-3639.DOI: 10.16085/j.issn.1000-6613.2017-2567

二价铁活化过碳酸钠对磺胺甲唑的去除

颜平平, 隋倩, 吕树光, 邱兆富

华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237

收稿日期:2017-12-13 修回日期:2018-02-26 出版日期:2018-09-05 发布日期:2018-09-05
通讯作者: 隋倩,副教授,硕士生导师,研究方向为新兴污染物的存在规律与去除原理。
作者简介:颜平平(1992-),女,硕士研究生,研究方向为药物和个人护理品的高级氧化技术。
基金资助:
国家自然科学基金面上项目（21577033，21777042）及水体污染控制与治理科技重大专项（2017ZX07202006）。

Removal of sulfamethoxazole by ferrous-activated sodium percarbonate in the aqueous phase

YAN Pingping, SUI Qian, LÜ Shuguang, QIU Zhaofu

School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, Shanghai, China

Received:2017-12-13 Revised:2018-02-26 Online:2018-09-05 Published:2018-09-05

摘要/Abstract

摘要： 近年来，地下水中抗生素等新兴污染物的存在及可能引起的环境健康风险受到日益广泛的关注。作为一种新型氧化剂，过碳酸钠（SPC）对环境友好，不会产生二次污染，具有地下水修复的应用前景。然而，目前尚无SPC对水中抗生素去除效果的研究报道。因此，本文开展了二价铁活化过碳酸钠体系对水中典型抗生素磺胺甲唑（SMX）的去除研究，考察了pH、常见的无机离子和天然有机物对SMX去除的影响。结果表明，随着二价铁和过碳酸钠投加量的增加，SMX的降解效果从45.2%显著提高到91.9%。溶液初始pH对反应的影响不显著，当pH在3~9的范围内，降解效果影响较小，但当pH>10时，反应不再进行。HCO₃^-对反应会产生显著的抑制，当HCO₃^-的浓度为0.6mmol/L时，去除效果即由98.9%下降至38.6%；高浓度的Cl^-对反应略有抑制，当Cl^-浓度达到60mmol/L时，SMX的去除率由98.9%下降到95%；除此以外，包括SO₄^2-、NO₃^-、Na⁺、Mg²⁺和Ca²⁺等地表水中常见的离子均对反应无明显影响。腐植酸对该反应体系的影响也较小，只有当腐植酸浓度达到50mg/L后，才会对反应过程产生一定的抑制。

关键词: 磺胺甲唑, 过碳酸钠, 无机离子, 腐植酸, 降解

Abstract: In recent years, the abuse of antibiotics has become one of the most prominent issues due to the wide detection of antibiotics in the aquatic environment, and the associated risks to aquatic ecological system and human health. Sodium percarbonate (SPC), which has a strong oxidation capacity and is friendly to the environment, is promising in groundwater remediation. However, up till now, there have been few studies on the removal of antibiotics by SPC. Thus, the performance of Fe(Ⅱ) activated SPC[SPC/Fe(Ⅱ)] process to remove sulfamethoxazole (SMX), a typical antibiotic, was evaluated in the present study. The effects of pH, inorganic ions and humic acid were extensively investigated. The results showed that SMX was efficiently removed by SPC/Fe(Ⅱ) process. The removal efficiencies increased from 45.2% to 91.9%, with the increased dosage of Fe(Ⅱ) and SPC. The influence of initial pH, ranging from 3 to 9, was relatively minor. However, when the pH exceeded 10, the degradation did not occur. HCO₃^- inhibited the oxidation significantly. When the concentration of HCO₃^- was 0.6mmol/L, the degradation of SMX declined from 98.9% to 38.6%. High concentration of Cl^- would have slight inhibition on the reaction. When Cl^- reached 60mmol/L, the degradation of SMX decreased from 98.9% to 95%. As for other inorganic ions such as SO₄^2-, NO₃^-, Na⁺, Mg²⁺ and Ca²⁺, the influence on the reaction was negligible. In addition, humic acid had slight inhibition in the degradation of SMX. The reaction would be inhibited only when humic acid concentration reached 50mg/L.

Key words: sulfamethoxazole (SMX), sodium percarbonate (SPC), inorganic ions, humic acid, degradation

中图分类号:

X523

颜平平, 隋倩, 吕树光, 邱兆富. 二价铁活化过碳酸钠对磺胺甲唑的去除[J]. 化工进展, 2018, 37(09): 3635-3639.

YAN Pingping, SUI Qian, LÜ Shuguang, QIU Zhaofu. Removal of sulfamethoxazole by ferrous-activated sodium percarbonate in the aqueous phase[J]. Chemical Industry and Engineering Progress, 2018, 37(09): 3635-3639.

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二价铁活化过碳酸钠对磺胺甲唑的去除

Removal of sulfamethoxazole by ferrous-activated sodium percarbonate in the aqueous phase

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