Parkway Secures Approvals for QBMC, Leading CSG Brine Beneficial Use

Regulatory Green Light for Groundbreaking Waste-to-Chemicals Facility

Parkway Corporate Limited (ASX:PWN) has secured pivotal environmental and development approvals for its Queensland Brine Management Complex (QBMC), marking a milestone in the management of coal seam gas (CSG) waste brine in Australia. The Western Downs Regional Council’s approval of the Development Application, alongside the Queensland Government’s Environmental Authority and road access permits, clears the path for Parkway’s flagship project to proceed with both its commercial demonstration phase (QBMC-CDP) and the first full-scale commercial stage.

Transforming CSG Waste Brine into Valuable Industrial Chemicals

QBMC is set to become the nation’s first regulated waste facility permitted to process both CSG waste brine and salts, converting these persistent environmental liabilities into industrial reagents such as caustic soda and hydrochloric acid. The commercial demonstration project will operate at one-tenth the scale of the first commercial stage, which is projected to process approximately 75,000 tonnes of contained salts annually and deliver strong financial metrics, including an indicative net present value exceeding $700 million and an internal rate of return above 30%.

Beyond Stage 1, the master plan envisions up to four stages, cumulatively capable of treating all lifecycle waste brines produced by Queensland’s CSG industry, potentially processing around six million tonnes of salts over a 20-year project life. This scale underscores QBMC’s potential to reshape waste management practices across the sector.

Policy-Driven Shift Towards Beneficial Use and Circular Economy

The approvals come alongside the release of a comprehensive Regulatory Framework Review by independent consultants Onward, commissioned by Queensland Brine Solutions, Parkway’s wholly owned subsidiary developing QBMC. The report highlights Queensland’s evolving regulatory landscape, which prioritises prevention of environmental harm, resource recovery, and beneficial use of CSG brine over indefinite storage or disposal.

Historically, the industry has relied on interim brine dams, storing over 13,000 megalitres of brine in Queensland, with significant environmental and residual risk liabilities. The review emphasises that QBMC offers a credible alternative aligned with government policy, reducing long-term liabilities by converting waste brine into marketable chemical products and recovered water, thereby supporting circular economy principles.

Strategic Industry and Regional Implications

QBMC’s location in the Western Downs positions it near expanding CSG developments such as the APLNG project and Arrow Energy’s Surat Gas Project Central, underscoring its strategic importance. The facility’s outputs, including caustic soda, align with Queensland’s Critical Minerals Future strategy and support the aluminium industry’s decarbonisation efforts by substituting imported reagents with domestically produced green chemicals.

Furthermore, QBMC addresses emerging challenges faced by data centres and other industries generating regulated waste brines, offering a sustainable waste management infrastructure opportunity. Parkway’s integration of renewable energy sources within the Crossroads Renewable Energy precinct further enhances the project’s low-emissions credentials.

Next Steps and Commercialisation Pathway

With primary approvals in hand, Parkway plans to finalise engineering design for the QBMC-CDP, secure remaining permits, and commence early site works potentially before year-end. The company is advancing collaborations with Hitachi on ultra-high brine concentration systems and pursuing funding arrangements to underpin commercial development.

Parkway’s CEO Bahay Ozcakmak emphasised the project’s transformative potential, noting that QBMC is uniquely positioned to meet increasing regulatory obligations on CSG operators by providing an authorised pathway for beneficial use. He highlighted ongoing discussions to process significant brine volumes from multiple sources, reflecting broad industry interest.

While the project’s success hinges on demonstrating technical performance, market acceptance, and regulatory compliance, QBMC represents a timely convergence of technology, policy, and industry demand. It challenges the status quo of brine management, potentially setting a new standard for environmental stewardship and economic value creation in Queensland’s resource sector.