纳米零价铁基生物炭活化过硫酸盐降解土霉素

廖晓数; 朱成煜; 仇玥; 钟敏; 周冰凌; 张倩

doi:10.13205/j.hjgc.202208016

纳米零价铁基生物炭活化过硫酸盐降解土霉素

doi: 10.13205/j.hjgc.202208016

廖晓数¹,
朱成煜¹,
仇玥^1, ,,
钟敏²,
周冰凌²,
张倩²

1. 武汉市汉阳市政建设集团有限公司, 武汉 430000;
2. 武汉理工大学土木工程与建筑学院, 武汉 430070

基金项目:

海绵城市建设水系统科学湖北省重点实验室开放基金(2019-06)

详细信息

作者简介:
廖晓数(1981-),男,高级工程师,主要研究方向为水处理技术与海绵城市。66159062@qq.com

通讯作者:
仇玥(1993-),女,初级工程师,主要研究方向为污染水体修复、海绵城市。33716290@qq.com

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出版历程
- 收稿日期: 2021-11-22
- 刊出日期: 2022-11-08

PERSULFATE ACTIVATION VIA NANOSCALE ZERO-VALENT IRON BASED BIOCHAR FOR OXYTETRACYCLINE DEGRADATION

1. Wuhan Hanyang Municipal Construction Group Co., Ltd, Wuhan 430000, China;
2. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China

摘要

摘要: 采用纳米零价铁基生物炭(nZVI-BC)耦合过二硫酸钠(PDS)或过硫酸氢钾(PMS)构建吸附-高级氧化复合体系开展水中土霉素(OTC)的高效降解。考察了在不同PDS/PMS浓度、nZVI-BC投量、OTC浓度及初始pH条件下OTC的去除规律,并对体系中活性物种进行探究。结果表明:在0.20 mmol/L PDS/PMS,0.01 g nZVI-BC,50 mg/L OTC,原始pH为5.0±0.1条件下,OTC去除率可达到80%以上;SO₄^-·在nZVI-BC/PDS体系中对OTC降解占有绝对主导地位(贡献度为57.00%),nZVI-BC/PMS体系则主要依靠SO₄^-·、O₂^-·和¹O₂。
- 纳米零价铁 /
- 生物炭 /
- 过二硫酸钠 /
- 过硫酸氢钾 /
- 土霉素 /
- 高级氧化
Abstract: In this study, the coupled adsorption-advanced oxidation system was established, based on the nanoscale zero-valent iron-based biochar (nZVI-BC) combined with sodium peroxodisulfate (PDS) or potassium peroxymonosulfate (PMS), and then applied in the investigation of oxytetracycline (OTC) removal. Based on this, the performance of OTC removal with different condition factors, including PDS/PMS concentration, nZVI-BC dosage, OTC concentration and initial pH, was investigated. The generated reactive oxygen species for OTC removal were also explored. The results showed that OTC removal efficiency was more than 80% under the conditions of 0.20 mmol/L PDS/PMS, 0.01 g nZVI-BC, 50 mg/L OTC and an original pH value of 5.0±0.1. In nZVI-BC/PDS system, SO₄^-· played a dominant role in OTC degradation (with a contribution of 57.00%), while SO₄^-·, O₂^-·, and¹O₂ were significant roles in nZVI-BC/PMS.
- nanoscale zero-valent iron /
- biochar /
- sodium peroxodisulfate /
- potassium peroxymonosulfate /
- oxytetracycline /
- advanced oxidation process

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