Effect of Microbial Biomass and Humic Acids on Abiotic and Biotic Magnetite Formation
文献类型：期刊论文
| 作者 | Han, Xiaohua1,2,3,4; Tomaszewski, Elizabeth J.2; Sorwat, Julian2; Pan, Yongxin1,3,4; Kappler, Andreas2; Byrne, James M.2 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 出版日期 | 2020-04-07 |
| 卷号 | 54期号:7页码:4121-4130 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.9b07095 |
| 英文摘要 | Magnetite (Fe3O4) is an environmentally ubiquitous mixed-valent iron (Fe) mineral, which can form via biotic or abiotic transformation of Fe(III) (oxyhydr)oxides such as ferrihydrite (Fh). It is currently unclear whether environmentally relevant biogenic Fh from Fe(II)-oxidizing bacteria, containing cell-derived organic matter, can transform to magnetite. We compared abiotic and biotic transformation: (1) abiogenic Fh (aFh); (2) abiogenic Fh coprecipitated with humic acids (aFh-HA); (3) biogenic Fh produced by phototrophic Fe(II)-oxidizer Rhodobacter ferrooxidans SW2 (bFh); and (4) biogenic Fh treated with bleach to remove biogenic organic matter (bFh-bleach). Abiotic or biotic transformation of Fh was promoted by Fe-aq(2+) or Fe(III)-reducing bacteria. Fe-aq(2+)-catalyzed abiotic reaction with aFh and bFh-bleach led to complete transformation to magnetite. In contrast, aFh-HA only partially (68%) transformed to magnetite, and bFh (17%) transformed to goethite. We hypothesize that microbial biomass stabilized bFh against reaction with Fe-aq(2+). All four Fh substrates were transformed into magnetite during biotic reduction, suggesting that Fh remains bioavailable even when associated with microbial biomass. Additionally, there were poorly ordered magnetic components detected in the biogenic end products for aFh and aFh-HA. Nevertheless, abiotic transformation was much faster than biotic transformation, implying that initial Fe-aq(2+) concentration, passivation of Fh, and/or sequestration of Fe(II) by bacterial cells and associated biomass play major roles in the rate of magnetite formation from Fh. These results improve our understanding of factors influencing secondary mineralization of Fh in the environment. |
| WOS关键词 | COPRECIPITATED ORGANIC-MATTER ; FE(II)-CATALYZED TRANSFORMATION ; DISSIMILATORY REDUCTION ; MINERALIZATION PATHWAYS ; IRON OXIDATION ; FERRIHYDRITE ; FE(III) ; CARBON ; OXIDE ; REACTIVITY |
| 资助项目 | German Research Foundation (DFG)[KA 1736/39-1] ; China Scholarship Council (CSC) ; National Natural Science Foundation of China[41621004] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000526418000043 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | German Research Foundation (DFG) ; German Research Foundation (DFG) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Research Foundation (DFG) ; German Research Foundation (DFG) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96210]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Byrne, James M. |
| 作者单位 | 1.Chinese Acad Sci, France China Int Lab Evolut & Dev Magnetotact Mul, Beijing 100029, Peoples R China 2.Univ Tubingen, Geomicrobiol, Ctr Appl Geosci, D-72074 Tubingen, Germany 3.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Biogeomagnetism Grp, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Xiaohua,Tomaszewski, Elizabeth J.,Sorwat, Julian,et al. Effect of Microbial Biomass and Humic Acids on Abiotic and Biotic Magnetite Formation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(7):4121-4130. |
| APA | Han, Xiaohua,Tomaszewski, Elizabeth J.,Sorwat, Julian,Pan, Yongxin,Kappler, Andreas,&Byrne, James M..(2020).Effect of Microbial Biomass and Humic Acids on Abiotic and Biotic Magnetite Formation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(7),4121-4130. |
| MLA | Han, Xiaohua,et al."Effect of Microbial Biomass and Humic Acids on Abiotic and Biotic Magnetite Formation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.7(2020):4121-4130. |
入库方式： OAI收割
来源：地质与地球物理研究所
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