科研成果详情

题名Illuminated fulvic acid stimulates denitrification and As(III) immobilization in flooded paddy soils via an enhanced biophotoelectrochemical pathway
作者
发表日期2024-02-20
发表期刊Science of the Total Environment   影响因子和分区
语种英语
原始文献类型Journal article (JA)
关键词Bacteria Biogeochemistry Biological materials Denitrification Electron transport properties Floods Iron compounds Light sensitive materials Organic acids Photosensitivity Soils Condition Dark conditions Denitrifiers Dissolved organic matters Fulvic acids Immobilisation Nitrate treatments Nitrates removal Paddy soils Sunlight
其他关键词MICROBIAL REDUCTIVE DISSOLUTION ; ELECTRON-TRANSFER ; MOBILIZATION ; OXIDATION ; SEDIMENTS ; BACTERIA ; IMPACTS ; ROLES ; IRON ; FE
摘要

Fulvic acid (FA) is a representative photosensitive dissolved organic matter (DOM) compound that occurs naturally in paddy soils. In this study, the effect of a FA + nitrate treatment (0, 4 and 8 mg/L FA + 20 mmol/L nitrate) on denitrification and As(III) immobilization in flooded paddy soils was assessed under dark and intermittently illuminated conditions (12 h light+12 h dark). The FA input stimulated denitrification in illuminated soils (~100 % of nitrate removal within 6 days) compared to dark conditions (~92 % nitrate removal after 6 days). Meanwhile, As(III) (initial concentration of 0.1 mmol/L) was nearly completely immobilized (~100 %) under illuminated conditions after 4 days for the FA + nitrate treatment compared to 90– 93 % retention in the dark. Denitrification and As immobilization were positively related to the FA dosage in the illuminated assays. The stronger denitrification in illuminated soils was ascribed to denitrifiers harvesting photoelectrons from photosensitive substrates/semiconducting minerals. FA addition also increased the activities of denitrifying enzymes (e.g., NAR, NIR and NOR) and the denitrification electron transport system by nearly 0.6–0.7 and 1.5–1.8 times that of the nitrate-alone treatment under illuminated and dark conditions, thereby fostering stronger denitrification. Upon irradiation, As(III) immobilization was not only stimulated by the interactions with the denitrification pathway whereby As(III) acts as an electron donor for denitrifiers, but was also modulated by Fe(III)/oxidative reactive species-derived photooxidation of As(III). Moreover, the FA + nitrate treatment promoted the enrichment of metal-oxidizing bacteria (e.g., Stenotrophomonas and Acidovorax) that are responsible for nitrate-dependent As(III)/Fe(II) oxidation. The results of this study enhance our understanding of interactions among the biogeochemical cycles of As, Fe, N and C, which are intricately linked by a biophotoelectrochemical pathway in flooded paddy soils. © 2023

资助项目National Natural Science Foundation of China [41807035, 22306149] ; Science and Technology Bu- reau of Wenzhou, China [N2023011] ; Natural Scientific Foundation of Fujian Province [2022J01391] ; Zhejiang Province Public Welfare Technology Application Research Project [LGF22E080002]
出版者Elsevier B.V.
ISSN0048-9697
EISSN1879-1026
卷号912
DOI10.1016/j.scitotenv.2023.169670
页数14
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:001154204800001
收录类别SCIE ; EI ; PUBMED ; SCOPUS
在线发表日期2023-12
EI入藏号20240115320927
EI主题词Nitrates
EI分类号461.2 Biological Materials and Tissue Engineering ; 481.2 Geochemistry ; 483.1 Soils and Soil Mechanics ; 741.1 Light/Optics ; 801.2 Biochemistry ; 802.2 Chemical Reactions ; 804.1 Organic Compounds ; 804.2 Inorganic Compounds
URL查看原文
PubMed ID3816083
SCOPUSEID2-s2.0-85181061225
通讯作者地址[Gao, Meiling]The State Key Laboratory of Ophthalmology,Optometry and Visual Science,Wenzhou Medical University,Wenzhou,325027,China ; [Chen, Zheng]School of Public Health and Management,Wenzhou Medical University,Wenzhou,China
Scopus学科分类Environmental Engineering;Environmental Chemistry;Waste Management and Disposal;Pollution
引用统计
文献类型期刊论文
条目标识符https://kms.wmu.edu.cn/handle/3ETUA0LF/205706
专题公共卫生学院
眼视光学院(生物医学工程学院)、附属眼视光医院
公共卫生学院_硕士
通讯作者Gao, Meiling; Chen, Zheng
作者单位
1.School of Public Health & Management,Wenzhou Medical University,Wenzhou,325035,China;
2.Key Laboratory of Fertility Preservation and Maintenance of Ministry of Education,Ningxia Medical University,Yinchuan,750004,China;
3.Department of Marine Biology,Xiamen Ocean Vocational College,Xiamen,361100,China;
4.The State Key Laboratory of Ophthalmology,Optometry and Visual Science,Wenzhou Medical University,Wenzhou,325027,China;
5.Department of Land,Air & Water Resources,University of California,Davis,95616,United States;
6.School of Environmental Science & Engineering,Tan Kah Kee College,Xiamen University,Zhangzhou,363105,China
第一作者单位公共卫生学院
通讯作者单位温州医科大学;  公共卫生学院
第一作者的第一单位公共卫生学院
推荐引用方式
GB/T 7714
Zeng, Yanqiong,Wang, Honghui,Hu, Jiehua,et al. Illuminated fulvic acid stimulates denitrification and As(III) immobilization in flooded paddy soils via an enhanced biophotoelectrochemical pathway[J]. Science of the Total Environment,2024,912.
APA Zeng, Yanqiong., Wang, Honghui., Hu, Jiehua., Zhang, Jing., Wang, Feng., ... & Chen, Zheng. (2024). Illuminated fulvic acid stimulates denitrification and As(III) immobilization in flooded paddy soils via an enhanced biophotoelectrochemical pathway. Science of the Total Environment, 912.
MLA Zeng, Yanqiong,et al."Illuminated fulvic acid stimulates denitrification and As(III) immobilization in flooded paddy soils via an enhanced biophotoelectrochemical pathway".Science of the Total Environment 912(2024).

条目包含的文件

条目无相关文件。
个性服务
查看访问统计
谷歌学术
谷歌学术中相似的文章
[Zeng, Yanqiong]的文章
[Wang, Honghui]的文章
[Hu, Jiehua]的文章
百度学术
百度学术中相似的文章
[Zeng, Yanqiong]的文章
[Wang, Honghui]的文章
[Hu, Jiehua]的文章
必应学术
必应学术中相似的文章
[Zeng, Yanqiong]的文章
[Wang, Honghui]的文章
[Hu, Jiehua]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。