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Friday, December 19, 2025

Deacrbonisation Pathway for 2026

CEWT POSITION STATEMENT
Decarbonisation Pathway

A system-based, thermodynamically defined approach to zero emissions. Carbon Recycling Technology (CRT) closes the carbon loop within a defined system boundary.

Core Definition

Decarbonisation = removal of carbon from carbon-containing molecules and disciplined management of that carbon.

Thermodynamic Test

Does carbon exit into the surroundings, or remain inside a closed system boundary?

What decarbonisation actually means

“Decarbonisation” is often used interchangeably with electrification or hydrogen adoption. From chemistry and thermodynamics, it has a precise meaning.

Decarbonisation is the removal of carbon from carbon-containing molecules and the disciplined management and reuse of that carbon within a defined system boundary.

Hydrogen is an independent element and cannot itself be “decarbonised”. Hydrogen may play an important role, but hydrogen alone does not define a complete decarbonisation pathway.

Thermodynamics: system and surroundings

Every valid mass balance begins by defining the system and the surroundings. Without explicit boundaries, carbon accounting becomes virtual.

System vs Surroundings diagram
Caption: Conventional systems allow carbon to exit the system boundary and enter the surroundings (atmosphere). In a closed-loop system such as CRT, carbon is captured and recycled back into fuel molecules within the system boundary, preventing net emissions.
CRT: a closed-loop decarbonisation pathway

CRT integrates decarbonisation and recarbonisation within a single bounded system. Carbon remains inside the system rather than being exported to the surroundings.

Step 1 — Decarbonisation

  • Carbon removed from exhaust streams
  • Carbon captured inside the system boundary
  • Auditable mass balance

Step 2 — Recarbonisation

  • Captured carbon reused to form fuel molecules
  • Hydrogen used as reducing agent and stoichiometric balancer
  • Zero net carbon leakage to the surroundings
Policy clarity: from accounting to accountability

CEWT’s position is that decarbonisation must be grounded in explicit system boundaries and measurable carbon flows. Offsets and open boundaries cannot replace physical accountability.

Key policy question: Where does the carbon go — into the surroundings, or does it remain inside the system?

CEWT policy principle

  • System boundaries must be explicit for any decarbonisation claim.
  • Carbon flows must be measurable and auditable (mass balance).
  • Closed-loop pathways enable physical accountability, not virtual neutrality.

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