Screening Life Cycle Assessment for Fermentation and Cell Culture

This bioprocess LCA calculator gives you a cradle-to-gate carbon footprint for a fermentation or cell culture process in minutes, expressed as kilograms of CO₂ equivalent per kilogram of purified product. Alongside the headline number it reports process mass intensity, energy intensity and water intensity, and it breaks the footprint down by stage so you can see which part of the process actually drives the result. Most general-purpose life cycle assessment software expects you to build the process model yourself, node by node. None of it knows what a seed train, a clean-in-place cycle or a single-use assembly is. This tool starts from the parameters a bioprocess engineer already has to hand, and constructs the life cycle inventory for you.

The calculation follows the ISO 14040 structure in simplified form. You define the functional unit (one kilogram of purified product), the tool compiles a life cycle inventory from your energy, materials, water and consumables inputs, applies characterisation factors to convert that inventory into climate impact, and presents a contribution analysis so the interpretation step has something to work with. Electricity is converted using regional grid intensities computed from United States EPA eGRID primary data; direct fuel combustion uses stationary combustion factors from the same public dataset; global warming potentials are IPCC values, with AR6, AR5 and AR4 all available. Polymer incineration is not looked up in a table at all. It is computed from the carbon mass fraction of each polymer repeat unit, so a kilogram of polyethylene yields 3.14 kg of fossil CO₂ by stoichiometry, while a kilogram of PVDF yields only 1.38 kg because much of its mass is fluorine rather than carbon.

Most life cycle assessment software is priced for consultancies rather than process development teams. A seat on the established desktop packages runs into several thousand pounds a year, and much of that cost is the licensed background database rather than the software itself. That pricing makes sense for a full verified study and makes very little sense when you simply want to know whether aeration or single-use plastics dominates your footprint. This free LCA calculator exists to fill that gap: no licence, no install, no background database to buy, and no need to learn a general-purpose LCA tool before you can get a number. If the screening result tells you the decision is close or the stakes are high, that is the point at which commissioning a full study with a proper database becomes worth the money. Our LCA software comparison for bioprocess sets out what SimaPro, GaBi and openLCA each cost and when the spend is justified.

Every factor in the tool carries a visible confidence tier. Tier A means the value was computed here from primary open data you can re-derive yourself. Tier B means it comes from a single named published source, quoted directly. Tier C means it is a midpoint of a published literature range and you should replace it with supplier data before making a decision that matters. Media components and speciality polymers are the weakest area, and the tool says so rather than hiding it behind a confident-looking number. This is a screening assessment: it exists to tell you where to look and which options to compare, not to produce a verified footprint for an environmental product declaration or a regulatory submission.