Improve performance and cut costs with industry-leading solvents with proven formulations for better CO2 capture and biogas upgrading.


Carbon Clean has improved upon conventional solvents with our patented formulation of amines and salts — known as Amine-Promoted Buffer Salts (APBS).

This innovation has been developed into two widely-used commercial solvents. APBS-CDRMax® was developed to extract CO2 from flue gas in large scale industrial plants. APBS-CARBex® was specifically designed for biogas/RNG upgrading. These unique solvents can be used as either a drop-in substitute into existing systems such as biogas separation or used with an integrated carbon capture system.


APBS-CDRMax® is a commercially-available CO2 capture solvent used for industrial flue gases or off-gases with CO2 concentrations ranging from 3-25% by volume.

The solvent can be paired with our CDRMax® process, or used as a drop-replacement for alternative solvents such as MDEA for low pressure gas separations. CDRMax produces CO2 with a purity of 95–99.9% and offers a $40/tonne cost of capture when used with our CDRMax process.

APBS-CDRMax® has high solvent stability, low corrosivity, low regeneration energy requirements, and holds up well in oxygenated environments. As a drop-in replacement, APBS-CDRMax® can reduce energy costs. In conjunction with our CDRMax® process, operational costs can be reduced 20–40% compared to conventional options. 


APBS-CARBex® is a commercially-proven, widely-used proprietary solvent that reduces the cost of upgrading biogas or landfill gas compared to alternative technologies such as membranes or PSAs.

APBS-CARBex® uses thermal energy to remove CO2 concentrations of up to 50% volume from biogas and landfill gas streams at low pressure. Over 99% of the raw methane is recovered to produce pipeline-quality natural gas (RNG) or compressed natural gas (CNG).

Additionally, APBS-CARBex® can offer improved operating performance compared to alternative solvents such as MDEA, MEA, and DGA for CO2 removal systems operating at low pressures.

N.B. The information contained in this entry is provided by the above supplier, and does not necessarily reflect the views and opinions of the publisher