Electro-biodiesel empowered by co-design of microorganism and electrocatalysis

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Joule Pub Date : 2024-10-31 DOI:10.1016/j.joule.2024.10.001

Kainan Chen, Peng Zhang, Yayun Chen, Chengcheng Fei, Jiali Yu, Jiahong Zhou, Yuanhao Liang, Weiwei Li, Sisi Xiang, Susie Y. Dai, Joshua S. Yuan

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引用次数: 0

Abstract

Efficient and sustainable energy production is essential for climate change mitigation, yet current approaches like biofuels or electro-fuels have limitations in efficiency and product profile. We advanced a new electro-biodiesel route via integrating electrocatalysis and bioconversion to produce lipids from CO₂ for biodiesel. We first revealed bioenergetic and metabolic limits in C2+ intermediate utilization through simulations and metabolomics, guiding the synthetic biology design to achieve reductant balance, more ATP production, efficient lipid conversion, and higher lipid yield. Furthermore, we discovered specific ratios of ethanol and acetate to achieve co-substrate synergy, empowering bimetallic catalyst design to improve bioconversion efficiency. The microbial and catalyst co-design achieved a solar-energy-to-molecule conversion efficiency of 4.5% for CO₂-to-lipid conversion. Electro-biodiesel leverages the high efficiency of electrocatalysis and longer-carbon-chain products from microbial lipid synthesis, overcoming the limitations for both electrocatalysis and bioconversion. Electro-biodiesel achieved 45 times less land usage than soybean biodiesel, competitive economics, and substantial carbon emission reduction.

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通过微生物和电催化的共同设计实现电生物柴油

高效和可持续的能源生产对减缓气候变化至关重要，但目前的生物燃料或电燃料等方法在效率和产品特性方面存在局限性。我们通过整合电催化和生物转化技术，推进了一条新的电生物柴油路线，利用二氧化碳生产生物柴油所需的脂质。我们首先通过模拟和代谢组学揭示了 C2+ 中间体利用过程中的生物能和代谢限制，从而指导合成生物学设计实现还原剂平衡、更多 ATP 生成、高效脂质转化和更高的脂质产量。此外，我们还发现了乙醇和醋酸的特定比例，以实现共底物协同作用，从而提高双金属催化剂的设计能力，提高生物转化效率。微生物和催化剂的协同设计使二氧化碳到脂质的太阳能分子转换效率达到 4.5%。电生物柴油利用了电催化的高效率和微生物脂质合成的长碳链产品，克服了电催化和生物转化的局限性。与大豆生物柴油相比，电生物柴油的土地使用量减少了 45 倍，经济效益极具竞争力，并大幅减少了碳排放。

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.