02 / OUTPUTS

Methane, chemicals and mineral outputs.

PGMCC links waste treatment with methane production and material recovery. For project developers and prospective offtakers, the figures below describe one industrial design scenario; product acceptance must be established for the intended use.

One model. Explicit assumptions.

The methane design scenario uses 1,000 kg/h dry municipal solid waste, equivalent to 1,666.67 kg/h wet feed at 40% moisture, and assumes 8,000 operating hours/year. Calculated outputs depend on feedstock composition, preparation and integrated operating conditions.

Methane

351.0 kg/h

The model calculates 351.0 kg/h CH₄ after final treatment, or 2,808 tonnes/year under the stated operating-time assumption. Conditioned syngas passes through water-gas shift and Sabatier methanation, CO₂ removal, drying and final O₂/N₂ separation.

Intended applications include grid injection and industrial fuel use, subject to the gas composition, delivery conditions and specification agreed with the receiving network or user. Renewable classification is assessed against the applicable feedstock and regulatory criteria.

Potassium carbonate solution

1,712.9 kg/h dry equivalent

CO₂ absorption with fresh potassium hydroxide (KOH) forms potassium carbonate (K₂CO₃). The model reports 1,712.9 kg/h dry equivalent, approximately 13,703 tonnes/year, or about 3,425.9 kg/h of 50 wt% solution. These are two expressions of the same carbonate stream, not additive outputs.

The proposed delivery form is a 50 wt% liquid solution. Its mass includes externally supplied KOH. Chemical offtake is defined by the agreed concentration, impurity limits, product analysis and handling specification for the intended application.

Vitrified mineral fraction

231.5 kg/h

The industrial model calculates 231.5 kg/h of vitrified slag from the mineral fraction of the feed. High-temperature treatment converts this fraction into a vitrified mineral material.

Potential use as a mineral material is selected according to composition, leaching-test results and the acceptance criteria of the intended application. Project specifications define the relevant testing and certification requirements.

Process-water recovery and reuse

Internal reuse

The pilot Basic Design includes condensate treatment, reverse osmosis and return of recovered water to the process, alongside fresh makeup water. Recovered water serves as an internal process utility.

The industrial water balance, reuse quality, makeup demand and concentrate-management route are engineered for the actual feedstock and site.

Source basis: PGMCC Green Methane and Chemical Complex, pp. 2–9 (industrial model); PGMCC Month 0 Basic Design, process-water treatment and reuse (pilot design); owner’s expert corrections (proposed 50 wt% liquid delivery form). Industrial quantities and pilot design details are kept separate.

See how the process produces these streams ↗

Inputs and balance boundaries

In addition to wet waste, the methane model uses 1,420.2 kg/h fresh KOH: 1,390.2 kg/h for CO₂ absorption and 30.0 kg/h for neutralisation. Water and external electricity are also required. The selected outputs above are not a waste-only mass balance; project engineering must account for all inputs, return flows and remaining residues.

The ideal carbon balance assigns approximately 263.3 kg/h carbon to methane and 148.8 kg/h to carbonate. Project environmental assessment also accounts for electricity, reagent supply, transport, operation and downstream product use.

Review the engineering and validation basis ↗

Define the outputs your project needs.

Discuss your project

Share your waste composition, annual wet-basis quantity, moisture analysis, site and intended methane use. We can then define the feedstock assessment, output specifications and validation scope.