Masstomass

Masstomass is a neologistic term used in discussions of material flow and recycling. It refers to the concept of transferring mass from one form, location, or process to another within a closed or semi-closed system, with a focus on mass balance and throughput rather than energy or information. In practice, masstomass analysis involves tracking inputs and outputs in kilograms or tonnes, applying mass balance equations to identify losses, leaks, or opportunities for recycling.

Origin and usage: The term has appeared in sustainability literature and online discourse as a way to emphasize circularity in manufacturing and product life cycles.

Foundation: Rooted in the law of conservation of mass, masstomass does not imply production or annihilation of mass, but transformation and relocation. It can be used to model closed-loop supply chains, urban material cycles, or space habitat life support systems.

Criticism: Because masstomass is not standardized, its meaning can vary between authors, leading to ambiguity. Some critics argue it overlaps with established concepts like mass balance, material flow analysis, or mass transfer.

See also: mass balance, material flow analysis, closed-loop manufacturing, recycling, sustainability.