IGGCAS OpenIR  > 地球与行星物理院重点实验室
Effect of Microbial Biomass and Humic Acids on Abiotic and Biotic Magnetite Formation
Han, Xiaohua1,2,3,4; Tomaszewski, Elizabeth J.1; Sorwat, Julian1; Pan, Yongxin2,3,4; Kappler, Andreas1; Byrne, James M.1
2020-04-07
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume54Issue:7Pages:4121-4130
AbstractMagnetite (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.
DOI10.1021/acs.est.9b07095
Funding OrganizationGerman 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
WOS KeywordCOPRECIPITATED ORGANIC-MATTER ; FE(II)-CATALYZED TRANSFORMATION ; DISSIMILATORY REDUCTION ; MINERALIZATION PATHWAYS ; IRON OXIDATION ; FERRIHYDRITE ; FE(III) ; CARBON ; OXIDE ; REACTIVITY
Language英语
Funding ProjectGerman Research Foundation (DFG)[KA 1736/39-1] ; China Scholarship Council (CSC) ; National Natural Science Foundation of China[41621004]
Funding OrganizationGerman 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
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000526418000043
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96210
Collection地球与行星物理院重点实验室
Corresponding AuthorByrne, James M.
Affiliation1.Univ Tubingen, Geomicrobiol, Ctr Appl Geosci, D-72074 Tubingen, Germany
2.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Biogeomagnetism Grp, Beijing 100029, Peoples R China
3.Chinese Acad Sci, France China Int Lab Evolut & Dev Magnetotact Mul, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
Recommended Citation
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.
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