How Microbes Turn Carbon Waste into Useful Chemicals

This patent describes a method using special bacteria called oxyhydrogen microorganisms, specifically Rhodococcus sp., to convert carbon dioxide and other single-carbon compounds into valuable organic chemicals like biofuels.

What it covers

The patent outlines a biological and chemical process to capture and convert carbon compounds. It involves introducing an inorganic carbon compound (like carbon dioxide, per claim 2) or a single-carbon organic compound (like carbon monoxide or methane, per claim 8) into a bioreactor. Inside, Rhodococcus sp. microorganisms (as specified in claim 1) perform a chemosynthetic carbon-fixing reaction. This reaction is powered by chemical or electrochemical energy from electron donors and acceptors (claim 1), which can be generated or supplied externally. The microorganisms then build these single-carbon inputs into longer organic chemical products, specifically those with carbon chain lengths between C5 and about C30 (claim 1). For example, industrial waste carbon dioxide could be fed into a bioreactor, and the microbes would convert it into a precursor for a biofuel.

What it doesn't cover

• —Does not cover processes using photosynthetic organisms to fix carbon.
• —Does not cover methods that produce organic compounds with carbon chain lengths outside the C5 to C30 range.
• —Does not cover carbon conversion methods that do not specifically use Rhodococcus sp. oxyhydrogen microorganisms or their extracts.
• —Does not cover processes where the energy for carbon fixation comes solely from light (photosynthesis).
• —Does not cover methods that don't rely on externally supplied or generated electron donors and acceptors for energy.

The clever bit

The novelty lies in specifically using Rhodococcus sp. oxyhydrogen microorganisms for chemosynthetic carbon fixation, driven by externally supplied chemical or electrochemical energy, to produce a specific range of longer-chain organic compounds (C5-C30) from simple carbon inputs.

Why it matters

This technology offers a way to address climate change by capturing carbon emissions and simultaneously creating valuable products. Instead of simply storing carbon, it transforms it into useful chemicals, biofuels, or even food ingredients. This approach can turn industrial waste streams, such as syngas from gasification, into a resource, potentially reducing reliance on fossil fuels for chemical production.

Real-world examples

• 1.Kiverdi's carbon transformation technology
• 2.Companies developing sustainable aviation fuels from CO2
• 3.Companies producing protein ingredients from C1 gases
• 4.Industrial processes converting syngas into chemicals