Upgrading to biomethane.

Complete turnkey plants.

Renewable natural gas.

Biogas upgrading or purification allows the production of biomethane, a clean fuel free of impurities and concentrated to over 96% CH4, comparable in quality to commercial natural gas but of renewable origin.

Unlike biogas, biomethane can be injected into the natural gas network or compressed/liquefied for transport and distribution to consumers without requiring them to adapt their equipment. This will be one of the main ways to increase biogas’s contribution to the energy system of the future.

Altare offers ETW SmartCycle biomethanization plants in a wide range of capacities, from 200 to 4,000 Nm3/h. These state-of-the-art plants with patented PSA technology are the benchmark in terms of energy consumption, product purity, and operating costs.

SmartCycle plant technology guarantees biomethane quality even when starting with biogas of highly variable quality or with a high contaminant load. The process automatically adapts to maintain a constant calorific value of the produced gas, which can be injected into the network without prior conditioning.

Leading technology

Our compact modules give you:

Flexible management: The plant can process variable quantities of input gas without loss of product quality. The load can be modulated between 30 and 100%.
Maximum energy efficiency: due to the SmartCycle operating principle and the low pressure levels during gas separation, the plants operate very efficiently, requiring only 0.14 kWh/Nm³ of raw gas.
Low maintenance: the molecular sieves used for CO2 separation have an almost unlimited useful life as they regenerate. The construction of the systems that make up the plant is highly optimized and easy to maintain.
Environmental friendliness: SmartCycle technology works entirely mechanically, so no chemicals or water are required. This means that amounts of waste that can be an unpredictable cost factor are avoided.
Compact Design: Our plants are pre-assembled in ISO standard containers so they can be set up quickly and save space. This approach reduces logistical effort and facilitates integration into existing facilities.
Proven quality: our plants are manufactured according to the highest standards of quality and reliability, with ISO certification, and are tested according to current standards. They have been in operation for years, without failures and consistently providing the same quality of biomethane.