Idea Bank — Request for Climate Startups

Chitin Foam from Shrimp Shells

Shrimp-shell chitin replaces EPS packaging foam — Bangladesh's shrimp industry makes it a local raw material play.

BiomaterialsDeep R&DEmergingBD fit · Medium
4 min read748 words
Scalability 3/5Carbon credit · PossibleChemistryManufacturingWaste managementSales & BD
Chitin Foam from Shrimp Shells

The ask

Extract chitin from shrimp processing waste and convert it into biodegradable packaging foam — a drop-in replacement for expanded polystyrene (EPS) — targeting garment exporters, electronics distributors, and pharmaceutical cold-chain users who face EU/UK single-use plastics bans on their export packaging.

Why now

Cruz Foam (US) proved chitin-based foam is commercially viable at scale in 2023. The EU Single-Use Plastics Directive and the UK equivalent are forcing Bangladesh's garment exporters to re-examine all packaging materials — a compliance deadline, not just a preference. EPS prices have risen 35% since 2021. The technology path is now derisked; the remaining challenge is local feedstock processing, which Bangladesh can do cheaply.

Why Bangladesh

Bangladesh is the world's fifth-largest shrimp exporter, processing roughly 150,000 tonnes/year; shrimp shell waste runs at ~40% of input weight and is currently landfilled or dumped at cost. That waste stream contains enough chitin to supply a meaningful domestic foam industry. Khulna and Chittagong both host large shrimp processing clusters where a chitin extraction plant co-located with processors would have near-zero feedstock transport cost.

As a business

The primary customer is garment exporters (a ৳4+ trillion industry) who need compliant packaging materials to maintain EU market access; secondary customers are pharma companies shipping cold-chain products. Revenue is per-kg of foam sold with a green premium over EPS; a carbon credit registration on the diverted waste stream adds a secondary income. The feedstock is currently a disposal liability for shrimp processors, meaning it may be available free or at negative cost.

Economics

Move the sliders to model your own chitin foam plant. Defaults are order-of-magnitude estimates — pressure-testing them is part of what a founder pitches us.

Model a chitin foam plant

Gross margin per kg
৳200
Monthly gross profit
৳2,000,000
Monthly payroll (all wages)
৳128,182
Labor cost per kg
৳12.82/kg
Monthly net profit
৳1,401,818
Payback (years)
2.4 yr
Impact at this scale
CO₂e avoided
420,000 tCO₂e/yr
Jobs created
3 FTE
FX saved
144,000 US$/yr
Cumulative revenue Cumulative cost Profit Loss
startyr 1yr 2yr 3yr 4yr 5Break-even ~2.4 years

Clears its setup cost after ~2.4 years, then profit (volt) from there. Hover or tap the chart for any month.

Illustrative model — defaults are order-of-magnitude estimates from public data, not a forecast. Pressure-test every number before you build.

What ZEPH would back

A founder with chemistry or materials science depth who has already secured a feedstock supply agreement with at least one shrimp processor and can demonstrate a working foam sample — not just the Cruz Foam slide deck. Ideally co-located with a Khulna or Chittagong processor to minimise waste transport.

Impact

Expanded polystyrene (EPS) packaging generates approximately 3.5 kg CO₂e per kg during production and is essentially non-biodegradable; chitin foam biodegrades in under 120 days and its feedstock — shrimp shell waste currently landfilled — has a near-zero carbon cost. Bangladesh's 150,000-tonne annual shrimp processing output generates roughly 60,000 tonnes of shell waste; converting even 10 % to chitin foam would displace thousands of tonnes of EPS and eliminate a significant coastal pollution liability. The business also keeps plastic-packaging import expenditure inside the country, generating direct FX savings for Bangladesh's garment and pharma exporters.

Also being built elsewhere

Companies proving the model in other markets.

More Biomaterials ideas

Other climate businesses we want built.