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Biogas can be generated by fermenting sewage. All buses in Stockholm run on it, it burns extremely clean and is carbon-neutral since it utilizes carbon already
by fastbeef 9y ago
Biogas can be generated by fermenting sewage. All buses in Stockholm run on it, it burns extremely clean and is carbon-neutral since it utilizes carbon already in the present carbon cycle.
- devy 9y agoAll yeast strains produce some amount of hydrogen sulfide during fermentation as a by-product of sulfate processing. [1] You can barely call that biogas "burns extremely clean" with hydrogen sulfide in them, can you? [1]: https://beerandbrewing.com/off-flavor-of-the-week-sulfur/ https://beerandbrewing.com/off-flavor-of-the-week-sulfur/
- fastbeef 9y agoSorry, bad choice words. The work is not done by a yeast so perhaps it’s not technically fermenting. The work is done by a type of bacteria called archea. As far as I know the only byproduct Upon burning biogas is CO2 and water vapor.