[sustran] Re: Op-ed piece on CNG

[bruun at seas.upenn.edu]

I want to call attention to an article in the Environment 2010 issue  
of Transportation
Research Record (TRR 2158). There is an interesting article about the  
relative pollution
and CHG levels of various engines used in Mexico City (and elsewhere).

The bottom line is that that CNG with an Oxidation Catalyst improves  
the usual CNG propulsion system
that otherwise gives cleaner exhaust, but at the expense of more GHG,  
than a diesel. Even better,
the diesel-electric hybrid is all around as good or better than all  
other propulsion systems.

Most important of all, it is absolutely essential that Ultra Low  
Sulpur Diesel fuel use be strictly enforced. If regular diesel,  
kerosene, or any other adulterants are allowed to be used, then the  
"clean diesel" equipment will quickly be destroyed.

Mr. Ghazali is absolutely right that technology isn't the problem, it  
is organizational.

Eric


Quoting Todd Edelman <edelman at greenidea.eu>:

> Depending on how it is obtained, CNG can have other problems, such as
> fracking <http://en.wikipedia.org/wiki/Hydraulic_fracturing>. See
> alsothis link <http://gaslandthemovie.com/whats-fracking>. Where does
> the CNG in India come from? Oil drilling?
>
> In Germany, CNG is at least informally described as an eco-fuel. Of
> course - and what might be alarming to Hindus - is that more and more of
> it comes in the form of bio-methane from industrial agricultural, i.e.
> cadavers of cows used in meat and dairy production, and other related waste.
>
> - T
>
>   On 21/10/10 18:29, Hassaan Ghazali wrote:
>> Please find attached my op-ed which appeared in Pakistan Today on Oct 21.
>>
>> Hassaan
>>
>>
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