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In this study, we investigated the transformation of sulfamethoxazole (SMX) by various reactive nitrogen intermediates (RNIs) (NO, NH2OH, and free nitrous acid (FNA)), as well as the effect of FNA on the removal of SMX (1~5mg/L) by ammonia-oxidizing bacteria (AOB) under weak acidic conditions. The results demonstrated that FNA significantly enhanced the removal of SMX, with pH identified being the most influential factor. Under weak acidic conditions(pH=6~7), FNA-coupled AOB cometabolism achieved a SMX removal efficiency of 80.0% without significantly affecting ammonia oxidation efficiency. During the process, the content of extracellular polymers (EPS) exhibited an initial increase followed by a decrease. The content of ammonia monooxygenase (AMO) was slightly inhibited, while the levels of hydroxylamine oxidoreductase (HAO) initially decreased and then increased. Additionally, the abundance of the AOB genus Nitrosomonas decreased sharply from 56.4% to 0.7% before recovering to 14.7%. In contrast, the abundance of Comamonas and Thermomonas increased significantly, which helped maintain ammonia oxidation performance and SMX removal efficiency.

, authors=Zi-heng FENG1, Bing-zheng WANG1, *, Xiao-yu TIAN1, Hao-xing HU1, Jia-li FANG1, Hui-yun ZHONG2, Ji LI1, 3, 4, authorsList=Zi-heng FENG, Bing-zheng WANG, Xiao-yu TIAN, Hao-xing HU, Jia-li FANG, Hui-yun ZHONG, Ji LI, authorCompany=null, correspAuthors=Bing-zheng WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917664582103451, articleId=1314917664062009753, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=弱酸性条件游离亚硝酸耦合氨氧化细菌强化降解磺胺甲恶唑, columnId=1240689621210820752, journalTitle=中国环境科学, columnName=新污染物, runingTitle=null, highlight=null, articleAbstract=

探究了不同活性氮中间体(RNIs)(NO、NH2OH、游离亚硝酸(FNA))对磺胺甲恶唑(SMX)的转化及弱酸性条件下FNA对氨氧化细菌(AOB)去除SMX(1~5mg/L)的影响.结果表明,FNA对SMX具有明显去除作用,pH值是最显著影响因素.弱酸性条件(pH=6~7)下,FNA耦合AOB共代谢对SMX的去除率达80.0%,且未对氨氧化效率产生显著影响;胞外聚合物(EPS)含量呈先升后降趋势;氨单加氧酶(AMO)含量受到轻微抑制,羟胺氧化还原酶(HAO)含量则先减后增;AOB菌属Nitrosomonas的丰度由56.4%降至0.7%,而后恢复至14.7%,Comamonas、Thermomonas的丰度也显著增加,有利于氨氧化性能的维持与SMX的去除.

, authors=冯梓恒1, 王秉政1, *, 田晓宇1, 胡昊星1, 方佳丽1, 仲慧赟2, 李激1, 3, 4, authorsList=冯梓恒, 王秉政, 田晓宇, 胡昊星, 方佳丽, 仲慧赟, 李激, authorCompany=null, correspAuthors=王秉政, authorNote=

冯梓恒(2000-),男,浙江绍兴人,江南大学硕士研究生,研究方向为水处理中新兴污染物的处理..

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* 责任作者,副教授,
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冯梓恒(2000-),男,浙江绍兴人,江南大学硕士研究生,研究方向为水处理中新兴污染物的处理..

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冯梓恒(2000-),男,浙江绍兴人,江南大学硕士研究生,研究方向为水处理中新兴污染物的处理..

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弱酸性条件游离亚硝酸耦合氨氧化细菌强化降解磺胺甲恶唑
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冯梓恒 1 , 王秉政 1, * , 田晓宇 1 , 胡昊星 1 , 方佳丽 1 , 仲慧赟 2 , 李激 1, 3, 4
中国环境科学 | 新污染物 2025,45(9): 5213-5226
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中国环境科学 |新污染物 2025 , 45 (9) : 5213 -5226
弱酸性条件游离亚硝酸耦合氨氧化细菌强化降解磺胺甲恶唑
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冯梓恒(2000-),男,浙江绍兴人,江南大学硕士研究生,研究方向为水处理中新兴污染物的处理..

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冯梓恒(2000-),男,浙江绍兴人,江南大学硕士研究生,研究方向为水处理中新兴污染物的处理..

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3.Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China
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冯梓恒1 , 王秉政1, * , 田晓宇1, 胡昊星1, 方佳丽1, 仲慧赟2, 李激1, 3, 4
作者信息
  • 1.江南大学环境与生态学院,江苏 无锡 214122
  • 2.常州大学城市建设学院,江苏 常州 213164
  • 3.江苏省厌氧生物技术重点实验室,江苏 无锡 214122
  • 4.江苏高校水处理技术与材料协同创新中心,江苏 苏州 215009
通讯作者:
* 责任作者,副教授,
作者简介:

冯梓恒(2000-),男,浙江绍兴人,江南大学硕士研究生,研究方向为水处理中新兴污染物的处理..

Enhanced degradation of sulfamethoxazole by free nitrous acid-coupled ammonia oxidizing bacteria under weak acidic conditions
Zi-heng FENG1 , Bing-zheng WANG1, * , Xiao-yu TIAN1, Hao-xing HU1, Jia-li FANG1, Hui-yun ZHONG2, Ji LI1, 3, 4
Affiliations
  • 1.School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
  • 2.School of Urban Construction, Changzhou University, Changzhou 213164, China
  • 3.Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China
  • 4.Jiangsu College of Water Treatment Technology and Material Collaborative Innovation Center, Suzhou 215009, China
出版时间: 2025-09-20
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探究了不同活性氮中间体(RNIs)(NO、NH2OH、游离亚硝酸(FNA))对磺胺甲恶唑(SMX)的转化及弱酸性条件下FNA对氨氧化细菌(AOB)去除SMX(1~5mg/L)的影响.结果表明,FNA对SMX具有明显去除作用,pH值是最显著影响因素.弱酸性条件(pH=6~7)下,FNA耦合AOB共代谢对SMX的去除率达80.0%,且未对氨氧化效率产生显著影响;胞外聚合物(EPS)含量呈先升后降趋势;氨单加氧酶(AMO)含量受到轻微抑制,羟胺氧化还原酶(HAO)含量则先减后增;AOB菌属Nitrosomonas的丰度由56.4%降至0.7%,而后恢复至14.7%,Comamonas、Thermomonas的丰度也显著增加,有利于氨氧化性能的维持与SMX的去除.

氨氧化细菌  /  共代谢  /  游离亚硝酸  /  磺胺甲恶唑  /  强化降解

In this study, we investigated the transformation of sulfamethoxazole (SMX) by various reactive nitrogen intermediates (RNIs) (NO, NH2OH, and free nitrous acid (FNA)), as well as the effect of FNA on the removal of SMX (1~5mg/L) by ammonia-oxidizing bacteria (AOB) under weak acidic conditions. The results demonstrated that FNA significantly enhanced the removal of SMX, with pH identified being the most influential factor. Under weak acidic conditions(pH=6~7), FNA-coupled AOB cometabolism achieved a SMX removal efficiency of 80.0% without significantly affecting ammonia oxidation efficiency. During the process, the content of extracellular polymers (EPS) exhibited an initial increase followed by a decrease. The content of ammonia monooxygenase (AMO) was slightly inhibited, while the levels of hydroxylamine oxidoreductase (HAO) initially decreased and then increased. Additionally, the abundance of the AOB genus Nitrosomonas decreased sharply from 56.4% to 0.7% before recovering to 14.7%. In contrast, the abundance of Comamonas and Thermomonas increased significantly, which helped maintain ammonia oxidation performance and SMX removal efficiency.

ammonia oxidizing bacteria  /  cometabolism  /  free nitrous acid  /  sulfamethoxazole  /  enhanced degradation
冯梓恒, 王秉政, 田晓宇, 胡昊星, 方佳丽, 仲慧赟, 李激. 弱酸性条件游离亚硝酸耦合氨氧化细菌强化降解磺胺甲恶唑. 中国环境科学, 2025 , 45 (9) : 5213 -5226 .
Zi-heng FENG, Bing-zheng WANG, Xiao-yu TIAN, Hao-xing HU, Jia-li FANG, Hui-yun ZHONG, Ji LI. Enhanced degradation of sulfamethoxazole by free nitrous acid-coupled ammonia oxidizing bacteria under weak acidic conditions[J]. China Environmental Science, 2025 , 45 (9) : 5213 -5226 .
  • 江苏省基础研究计划项目(BK20221102)
  • 国家重点研发计划项目(2023YFC3804703)
  • 中国博士后科学基金资助面上项目(2022M711359)
  • 国家自然科学基金青年项目(52300030)
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2025年第45卷第9期
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  • 接收时间:2025-02-05
  • 首发时间:2026-10-08
  • 出版时间:2025-09-20
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  • 收稿日期:2025-02-05
基金
江苏省基础研究计划项目(BK20221102)
国家重点研发计划项目(2023YFC3804703)
中国博士后科学基金资助面上项目(2022M711359)
国家自然科学基金青年项目(52300030)
作者信息
    1.江南大学环境与生态学院,江苏 无锡 214122
    2.常州大学城市建设学院,江苏 常州 213164
    3.江苏省厌氧生物技术重点实验室,江苏 无锡 214122
    4.江苏高校水处理技术与材料协同创新中心,江苏 苏州 215009

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* 责任作者,副教授,
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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