Are carbon neutral fuels good for the environment?

I'm sort of confused about carbon neutrality and it's impact on our environment. I feel like I'm over thinking it, but could someone explain to me what exactly makes a carbon neutral fuel clean? If it's clean burning at all? I'm interested in making biofuels specifically algae fuel, and this is a term that keeps popping up.

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orksecurity6 years ago
*IF* the fuel is truly carbon neutral, producing it takes as much CO2 out of the air as burning it releases.

Of course there's the question of whether they're calculating this honestly/accurately, and of what other resources it consumes or pollutants it releases during production or use.

It's one metric. It isn't the only metric.
Corn biodiesel can only release as much carbon as the corn plants take in. Therefore it is neutral to the environment. Not good, but not bad.

Still, the pollution caused by you car's production is not offset. Plus the production and transport of expendable parts(oil, brakes, tires) also causes pollution.

Carbon-neutral fuel is the best fuel for the environment, but it's still not good for it.
I think the phrase "carbon neutral" is used to indicate that burning the fuel releases no net CO2 over time. Obviously anything (except hydrogen) releases carbon dioxide when it is burned, but if the next years crops or algae or whatever absorb the CO2, then using the fuel won't result in a buildup of CO2 over time.

I don't know how biofuels like ethenol, biodiesel, etc compare with petroleum based equivalents as far as other pollutants.
Magnesium metal doesn't release carbon dioxide when it is burned in air.

Hydrogen sulfide  doesn't release carbon dioxide when it is burned in air.

Pyrophoric iron doesn't release carbon dioxide when it is burned in air.

Ammonia doesn't release carbon dioxide when it is burned in air.

...

Erm... I guess what I'm saying is that I don't follow how it is that  "Obviously anything (except hydrogen) releases carbon dioxide when it is burned"
My bad. I wasn't thinking of burning metals and so forth.