This work presents a study of the siloxanes and hydrogen sulfide separation process applied to the biogas treatment. A bibliography review shows the interest in the development of new technologies of low cost, to integrate them into an overall process of biogas up-grading. One part of this study is focused on the possible separation process by gas-liquid transfer into oils. This technology is compared with a more classical treatment process by adsorption into activated carbons. The results showed that both technologies are complementary, the absorption into oils used primarily to the abatement of high concentrations and the adsorption into the activated carbon as a finishing process. A second part of this study is focused on the hydrogen sulfide treatment. The requirements of abatement are very low, thus the approach is focused on a finishing process to complement the more classical methods. Thus a system by physic adsorption into pre-humidified activated carbon cloth was studied. The filter was regenerated in situ by direct electric heating under vacuum pressure. The study of the operating conditions allowed establishing the regeneration parameters and the process sustainability. The interest here is focused on the soft conditions of temperature and vacuum used to achieve the regeneration.
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