Enhancing Biogas Quality Across Europe with Regenerative VOC & Siloxane Removal Technology

By ANKA

As biogas utilization expands across Europe, maintaining consistent gas quality has become essential for ensuring reliable operation in energy recovery and biomethane upgrading applications. In particular, the removal of volatile organic compounds (VOC) and siloxanes is critical to protect downstream equipment such as gas engines, compressors, and membrane systems.

ANKA’s Regenerative VOC & Siloxane Removal System is designed to address these challenges across a wide range of applications, including landfill gas-to-energy plants, wastewater treatment facilities, and biomethane upgrading units. The system operates with an automated adsorption-regeneration cycle, enabling continuous operation without shutdown while maintaining stable performance under varying gas conditions. Compared to conventional systems, which require frequent media replacement and lead to increasing operational costs, ANKA’s regenerative technology significantly reduces OPEX by extending media lifetime and minimizing replacement frequency. This results in more predictable operating costs, reduced maintenance interventions, and uninterrupted plant operation.

The technology delivers high removal efficiency, achieving up to 80% VOC removal and over 90% siloxane removal, depending on inlet conditions. This ensures stable gas quality and significantly reduces the risk of deposits, corrosion, and operational disruptions in downstream processes. 

ANKA’s solutions are validated through a growing portfolio of reference projects across Europe, covering a wide range of capacities and application types. In Latvia, a 1,500 Nm³/h system supports landfill gas-to-electricity operations, while in Portugal, two ongoing projects, each with a capacity of 1,000 Nm³/h, demonstrate the flexibility of the system across different plant scales. In Spain, a new 1,500 Nm³/h installation further reflects the increasing demand for efficient and reliable gas treatment technologies in the region. 

A key highlight is the Seymen Landfill Gas-to-Electricity Plant in Türkiye, one of the largest applications in Europe, where ANKA’s system operates at a significantly larger scale. With a treatment capacity reaching up to 20,000 Nm³/h, this project stands as a strong example of the system’s capability to handle high flow rates while maintaining consistent removal performance across multiple engine units.

By focusing on operational stability, predictable performance, and reduced lifecycle costs, ANKA supports plant operators in optimizing their processes and protecting critical assets. As Europe advances toward its renewable energy targets, technologies that ensure high gas quality and system reliability will play a key role in enabling sustainable and efficient biogas utilization.

You can find more solutions like this in the 2026 Europe Edition of Biogas Community Magazine here.