Water Hyacinth Methane Calculator

Scientific limitation: Results are estimates based on the entered assumptions, not guaranteed real-world yields. The default TS value of 10% is illustrative; replace it with laboratory data for your actual feedstock.

Feedstock & Digestion Inputs

Enter the amount you want to model. The calculation has no fixed mass limit.

Fresh water hyacinth mass Must be greater than 0

Total Solids (TS)

VS / TS Fixed value

Specific methane yield Fixed value

L CH₄ / kg VS

Input mass basis

Choose the basis that matches your input data.

Calculation formula:
TS (kg) = fresh mass × TS%
VS (kg) = TS (kg) × VS/TS%
Methane (L) = VS (kg) × specific methane yield (L/kg VS)
When TS or VS is selected, the entered mass is interpreted using that basis.

Calculation Results

Estimate for the current inputs · results update automatically when values change

Estimated purified methane volume (CH₄)

18.15 L CH₄

0.01815 m³ CH₄

Calculated VS mass

0.08482 kg

Methane yield per VS

213.92 L/kg

Calculated TS mass

0.10000 kg

Estimated methane energy*

0.18 kWh

* Energy uses an approximate methane heating value of 9.94 kWh/m³. This is fuel energy, not actual electricity generated.

Estimated Revenue — Purified Methane (CH₄)

A market-reference proxy based on Asian spot LNG, converted to an energy-equivalent value. This is not a confirmed biomethane purchase offer.

Asian spot LNG reference price Q1 2026 average

USD/MMBtu

Exchange rate Editable reference

THB/USD

Pricing method: reference price (USD/MMBtu) × exchange rate (THB/USD) × methane energy (MMBtu/m³). Energy conversion uses 9.94 kWh/m³ and 1 MMBtu ≈ 293.071 kWh. The benchmark is an LNG import-market reference, not a direct market quote for locally produced purified methane.

Implied reference value

— THB/m³

— USD/m³

Estimated gross revenue (THB)

— THB

Estimated gross revenue (USD)

— USD

Estimated methane energy

— MMBtu

Important: This is a gross energy-equivalent estimate before purification, compression, storage, transport, taxes, equipment, and operating costs. Real sale prices depend on purity specifications, delivery method, contract terms, and the buyer. No sale is assumed to be possible without appropriate testing and infrastructure.

Calculation History

Timestamp	Input mass	Mass basis	VS (kg)	Methane (L)	Methane (m³)
No entries yet — click “Calculate estimate” to save a result

This prototype runs in your browser. History is kept only while this page remains open; there is no user account or online database.

Model scope: This calculator estimates methane potential only. Actual yield depends on feedstock composition, pretreatment, digester conditions, retention time, and gas losses.