Semiconducting Mineral Photocatalytic Regeneration of Fe2+ Promotes Carbon Dioxide Acquisition by Acidithiobacillus ferrooxidans
Semiconducting Mineral Photocatalytic Regeneration of Fe2+ Promotes Carbon Dioxide Acquisition by Acidithiobacillus ferrooxidans
复制标题
Fe2 的半导体矿物光催化再生促进酸性氧化亚铁硫杆菌吸收二氧化碳
DOI：
10.1111/1755-6724.12087
复制
发表时间：
2013-06
影响因子：
3.3
通讯作者：
Wang Changqiu
中科院分区：
文献类型：
--
作者：
Li Yan;Lu Anhuai;Wang Xin;Ding Hongrui;Wang Changqiu
化能自养生物由于其生物量产量低而一度被排除在普遍适用的CO2固定技术的发展之外。本研究以嗜酸氧化亚铁硫杆菌（Acidithiobacillusferrooxidans（A.f.）作为模式化能自养微生物来测试来自半导体矿物矿物铁的外生光电子能够使Fe 2+再生的假设，所述Fe 2+然后可以被A. f.并支持其成长。在模拟的电化学系统中，其中外生电子由电化学方法提供，A.f.与传统的分批培养相比，在一个耦合系统中，其中光照射的天然金红石提供初级电子源以馈送A.f.，细菌生长速率以及随后的CO2固定速率被证明是以光依赖的方式。光生电子从半导体矿物到细菌的持续流动为化能自养细菌的生长和CO2固定提供了取之不尽的电子源。这一发现可能有助于开发新型有效的CO2固定技术。
Chemoautotrophic organisms have once been excluded from the development of universally applicable CO2 fixation technology due to its low production yields of biomass. In this study, we used Acidithiobacillus ferrooxidans (A.f.) as a model chemoautotrophic microorganism to test the hypothesis that exogenetic photoelectrons from semiconducting mineral photocatalysis can enable the regeneration of Fe2+ that could be then used by A.f. and support its growth. In a simulated electrochemical system, where exogenetic electrons were provided by an electrochemical approach, an accelerated growth rate of A.f. was observed as compared with that in traditional batch cultivation. In a coupled system, where light‐irradiated natural rutile provided the primary electron source to feed A.f., the bacterial growth rate as well as the subsequent CO2 fixation rate was demonstrated to be in a light‐dependent manner. The sustaining flow of photogenerated electrons from semiconducting mineral to bacteria provided an inexhaustible electron source for chemoautotrophic bacteria growth and CO2 fixation. This finding might contribute to the development of novel effective CO2 fixation technology.
登录
查看更多内容
影响因子：
6.9
作者：
Anhuai Lu;Yan Li;M. Lv;Changqiu Wang;Lei Yang;Juan Liu;Yonghua Wang;K. Wong;P. Wong
通讯作者：
Anhuai Lu;Yan Li;M. Lv;Changqiu Wang;Lei Yang;Juan Liu;Yonghua Wang;K. Wong;P. Wong
影响因子：
2.8
作者：
Gadd, Geoffrey Michael
通讯作者：
Gadd, Geoffrey Michael
影响因子：
3.8
作者：
S. Yunker;J. Radovich
通讯作者：
S. Yunker;J. Radovich
影响因子：
0.8
作者：
M. Taya;H. Shiraishi;Tetsuya Katsunishi;S. Tone
通讯作者：
M. Taya;H. Shiraishi;Tetsuya Katsunishi;S. Tone
影响因子：
4.4
作者：
H. Lizama;Isamu Suzuki
通讯作者：
H. Lizama;Isamu Suzuki