Integrated Electromicrobial Conversion of CO2 to Higher Alcohols

  title={Integrated Electromicrobial Conversion of CO2 to Higher Alcohols},
  author={Han Li and Paul H. Opgenorth and David G. Wernick and Steve L Rogers and Tung-Yun Wu and Wendy Higashide and Peter Malati and Yi-Xin Huo and Kwang Myung Cho and James C. Liao},
  pages={1596 - 1596}
An engineered microbe transforms carbon dioxide into a prospective liquid fuel in tandem with electrical power rather than light. One of the major challenges in using electrical energy is the efficiency in its storage. Current methods, such as chemical batteries, hydraulic pumping, and water splitting, suffer from low energy density or incompatibility with current transportation infrastructure. Here, we report a method to store electrical energy as chemical energy in higher alcohols, which can… 

Microbial electrosynthesis of biochemicals

Microbial electrosynthesis (MES) is an electricity-driven production of chemicals from low-value waste using microorganisms as biocatalysts. MES from CO2 comprises conversion of CO2 to multi-carbon

Electrifying microbes for the production of chemicals

The future of MES is discussed and the challenges that lie ahead for its development into a mature technology are discussed.

Final Report of Gcep Project Synthesis of Biofuels on Bioelectrodes

Microbial electrosynthesis of multi-carbon organic compounds is a promising novel technology for converting electricity into renewable organic molecules as well as for storing electrical energy. This

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Solar-powered electrochemical reduction of CO2 and H2O to syngas, followed by fermentation, could lead to sustainable production of useful chemicals. However, due to insufficient electric current

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An approach whereby biomass is grown using energy obtained from a soluble mediator that is regenerated electrochemically, and results suggest that this and related rMFC platforms may enable biofuel and related biochemical production.



Direct photosynthetic recycling of carbon dioxide to isobutyraldehyde

The genetically engineered Synechococcus elongatus PCC7942 strain is genetically engineered to produce isobutyraldehyde and isobutanol directly from CO2 and increased productivity by overexpression of ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco).

Non-fermentative pathways for synthesis of branched-chain higher alcohols as biofuels

This strategy uses the host’s highly active amino acid biosynthetic pathway and diverts its 2-keto acid intermediates for alcohol synthesis to achieve high-yield, high-specificity production of isobutanol from glucose.

Growth of ‘Knallgas’ Bacteria (Hydrogenomonas) using Direct Electrolysis of the Culture Medium

IN view of the recent discussion pertaining to the use of the ‘knallgas’ bacteria for the regeneration of exhaled air1–3, we should like to point out that it is possible to produce the

Engineering the isobutanol biosynthetic pathway in Escherichia coli by comparison of three aldehyde reductase/alcohol dehydrogenase genes

Compared the effect of various alcohol dehydrogenases (ADH) for the last step of the isobutanol production, E. coli has the yqhD gene which encodes a broad-range ADH and shows better production than ADH2, a result confirmed by activity measurements with isobutyraldehyde.

Genomic View of Energy Metabolism in Ralstonia eutropha H16

  • R. Cramm
  • Biology, Engineering
    Journal of Molecular Microbiology and Biotechnology
  • 2008
Analysis of the complete genome sequence of strain H16 revealed genes for several isoenzymes, permit assignment of well-known physiological functions to previously unidentified genes, and suggest the presence of unknown components of energy metabolism.

Selective Formation of Formic Acid, Oxalic Acid, and Carbon Monoxide by Electrochemical Reduction of Carbon Dioxide

Selective formation of formic acid, oxalic acid, and carbon monoxide by electrochemical reduction of carbon dioxide (CO2) is demonstrated using several metallic electrodes in aqueous and nonaqueous

Integration of Homogeneous and Heterogeneous Catalytic Processes for a Multi-step Conversion of Biomass: From Sucrose to Levulinic Acid, γ-Valerolactone, 1,4-Pentanediol, 2-Methyl-tetrahydrofuran, and Alkanes

The multi-step conversion of sucrose to various C5-oxygenates and alkanes was achieved by integrating various homogeneous and heterogeneous catalytic systems. We have confirmed that the dehydration

The role of reactive oxygen species in the electrochemical inactivation of microorganisms.

This study clearly showed that the *OH is the major lethal species responsible for the E. coli inactivation in the chloride-free electrochemical disinfection process, and that the inactivation was highly promoted at a lower temperature, which was ascribed to the enhanced generation of O3.

Comparing Photosynthetic and Photovoltaic Efficiencies and Recognizing the Potential for Improvement

Natural photosynthesis is compared with present technologies for photovoltaic-driven electrolysis of water to produce hydrogen and opportunities in which the frontiers of synthetic biology might be used to enhance natural photosynthesis for improved solar energy conversion efficiency are considered.