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Landfill Scheme






                            Landfill gas




                            These fuel gases are produced by the conversion of
                            liquid or solid organic substances by micro-organisms.

                            Like associated petroleum gas, they are characterized
                            by a medium to high methane content and the consti-
                            tuents N and CO . However, as this gas emanates from
                                        2
                                                    2
                            highly heterogeneous substances, special care must
                            be taken with regard to trace substances and
                            impurities.



                            How does it work

                            Municipal waste contains about 150 to 250 kg of
                            organic carbon per ton. These substances are
                            biologically degrad-able and are converted by
                            microorganisms into landfill gas. Stable, anaerobic
                            methane fermentation begins one to
                            two years after the waste is deposited in the landfill











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