Skip to main content
4 votes
Accepted

Can a household's organic waste alone produce enough methane for its own space heating?

Let's see: This paper states numbers for organic waste production from 0.14 - 0.32 kg/ person day for developing countries. Elsewhere it is said that the total amount of organic wastes differs little ...
mart's user avatar
  • 2,846
4 votes

Which is best for dealing with food waste -- composting or a biogas digester?

Probably best to use an anaerobic digester first. Carbon dioxide release occurs when compounds containing carbon are oxidised. In conventional aerobic decomposition, this process is relatively direct ...
George of all trades's user avatar
3 votes
Accepted

What are the Energy Return on Investment (EROI) values like for biogas?

First of all, EROI depends on the calculation method (what is included and excluded), on the production method, and on the used resources. This means that there isn't one uniform EROI for biogas. It ...
THelper's user avatar
  • 14.5k
2 votes

Sustainability of waste incineration vs biofuel/biogas?

I can only answer regarding the actual plant. If food wastes need to be trucked all around Sweden when the incinerator is down the road, the picture may be different. Biogasification of food wastes, ...
mart's user avatar
  • 2,846
2 votes

How can I separate carbon monoxide from wood gas?

If you are going to use wood gas to run a generator, don't bother removing the CO. Burn it. https://www.youtube.com/watch?v=X3KipK49v7g is a vid on making a woodgas powered truck. That said: ...
Sherwood Botsford's user avatar
2 votes

How can I separate carbon monoxide from wood gas?

This master's thesis by Dahiru Rufai Ahmed at the university of Oulu provides a comprehensive background into the removal of CO2 from wood gas. On pages 36-37 it mentions the water-gas shift (WGS) ...
0tyranny0poverty's user avatar
1 vote

Biomass: Digestor/Reactor vs Gasifier Efficiency

Your comparing apples to oranges, or rather apple fruits to apple trees. AD (Anaerobic digestion) can only use parts of the plants that a cow could eat - starch, fat, protein and some fibre (...
mart's user avatar
  • 2,846
1 vote

What percentage of waste food is turned into electricity and/or biogas?

Any organic material decomposing in a anaerobic or near anaerobic situation will produce methane. I question your assumption that the source in landfills is mostly food in origin from individuals. ...
Sherwood Botsford's user avatar
1 vote
Accepted

Is it worthwhile to collect leaves that fall in autumn from trees for biogas production?

First, how do we look at the biogas yield of a suvbstrate? We look at the total solids (TS) and volatile solids (VS), and then measure the gas production per VS. TS is the fraction that remains after ...
mart's user avatar
  • 2,846
1 vote

Is it worthwhile to collect leaves that fall in autumn from trees for biogas production?

Yes, you could. Biogas production is heavily depending on outside factors. If you have to haul the matter a significant distance, you may end up with a net loss. Biogas overall is a way to intercept ...
Sherwood Botsford's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible