The objective of this project is to optimize the gas cleaning of synthesis gas derived from thermochemical gasification-processes. In the project, on the one hand, the "state of the art" method of RME-gas washing is going to be optimized with regard to simpler system engineering and reduced operating costs. On the other hand, a novel catalytic moderate-temperature gas-cleaning-method, which was developed within the FFG project "DistributedSNG" is going to be developed to project-maturity. The projects results will show a clear conclusion concerning the process-step of gas-cleaning, which reduces the high investment and operating costs are hindering the market implementation of gasification technologies.