Questions tagged [biodiesel]

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4
votes
1answer
110 views

Are soybeans mainly grown for animal feed or oil production?

In the great vegan vs. non-vegan environmental debate a big point of contention is the topic of animal feed. Vegans argue that a large percentage of agriculture should be attributed to cattle farming. ...
5
votes
1answer
125 views

Does bio jet fuel have a positive energy balance?

This article which was recently trending got me thinking about biofuels: Alaska Airlines makes first flight using jet fuel made from trees. I am not familiar with the numbers for biodiesel, but I ...
2
votes
1answer
368 views

Biofuel efficiency

I hear from alarmists that 1 food calorie costs 10 oil calories. Thereby, to produce 10 calories of biodisel, you need to spend 1 calorie of oil. Is it all right? It seems contradictory to me. It ...
6
votes
2answers
289 views

Is it possible to carry out large-scale seaweed cultivation for biomass / biofuel production?

Various forms of biomass, biofuel and biogas production are already in operation: wood waste, ethanol from sugar cane, primary wood (willow, poplar, pine), miscanthus, anaerobic digestion of organic ...
13
votes
6answers
420 views

Older biodiesel vehicle or newer but used hybrid, which is actually more sustainable?

I've heard a lot of back and forth on this issue, but when purchasing our next vehicle which is actually the better way to go? For us, we cannot go fully electric at this point due to drive times, ...