Carbonate Minerals and Dissimilatory Iron-Reducing Organisms Trigger Synergistic Abiotic and Biotic Chain Reactions under Elevated CO2 Concentration
文献类型：期刊论文
| 作者 | Li, SY ; Feng, Q; Liu, J; He, Y; Shi, L; Boyanov, MI; O'Loughlin, EJ; Kemner, KM; Sanford, RA; Shao, HB
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022 |
| 卷号 | 56期号:22页码:16428-16440 |
| 关键词 | CO2 acidification buffering impact natural carbonate mineral microbial iron reduction abiotic and biotic processes CO2 sequestration |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.2c03843 |
| 文献子类 | Article |
| 英文摘要 | Increasing CO2 emission has resulted in pressing climate and environmental issues. While abiotic and biotic processes mediating the fate of CO2 have been studied separately, their interactions and combined effects have been poorly understood. To explore this knowledge gap, an iron-reducing organism, Orenia metallireducens, was cultured under 18 conditions that systematically varied in headspace CO2 concentrations, ferric oxide loading, and dolomite (CaMg(CO3)2) availability. The results showed that abiotic and biotic processes interactively mediate CO2 acidification and sequestration through chain reactions, with pH being the dominant variable. Specifically, dolomite alleviated CO2 stress on microbial activity, possibly via pH control that transforms the inhibitory CO2 to the more benign bicarbonate species. The microbial iron reduction further impacted pH via the competition between proton (H+) consumption during iron reduction and H+ generation from oxidization of the organic substrate. Under Fe(III)-rich conditions, microbial iron reduction increased pH, driving dissolved CO2 to form bicarbonate. Spectroscopic and microscopic analyses showed enhanced formation of siderite (FeCO3) under elevated CO2, supporting its incorporation into solids. The results of these CO2-microbe-mineral experiments provide insights into the synergistic abiotic and biotic processes that alleviate CO2 acidification and favor its sequestration, which can be instructive for practical applications (e.g., acidification remediation, CO2 sequestration, and modeling of carbon flux). |
| 电子版国际标准刊号 | 1520-5851 |
| 语种 | 英语 |
| WOS记录号 | WOS:000878658900001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299455]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_粒子天体物理中心 高能物理研究所_东莞分部 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, SY,Feng, Q,Liu, J,et al. Carbonate Minerals and Dissimilatory Iron-Reducing Organisms Trigger Synergistic Abiotic and Biotic Chain Reactions under Elevated CO2 Concentration[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022,56(22):16428-16440. |
| APA | Li, SY.,Feng, Q.,Liu, J.,He, Y.,Shi, L.,...&Dong, YR.(2022).Carbonate Minerals and Dissimilatory Iron-Reducing Organisms Trigger Synergistic Abiotic and Biotic Chain Reactions under Elevated CO2 Concentration.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(22),16428-16440. |
| MLA | Li, SY,et al."Carbonate Minerals and Dissimilatory Iron-Reducing Organisms Trigger Synergistic Abiotic and Biotic Chain Reactions under Elevated CO2 Concentration".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.22(2022):16428-16440. |
入库方式： OAI收割
来源：高能物理研究所
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