Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

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arshyam
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby arshyam » 05 Apr 2020 10:54

ANI UP ✔ @ANINewsUP

#WATCH Water quality of River Ganga in Kanpur improves as industries are shut due to #Coronaviruslockdown. As per Dr PK Mishra, Professor at Chemical Engineering&Technology, IIT-BHU,Varanasi, there has been 40-50% improvement in quality of water in Ganga

https://twitter.com/i/status/1246640516659400706

nandakumar
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby nandakumar » 05 Apr 2020 12:13

arshyam wrote:
ANI UP ✔ @ANINewsUP

#WATCH Water quality of River Ganga in Kanpur improves as industries are shut due to #Coronaviruslockdown. As per Dr PK Mishra, Professor at Chemical Engineering&Technology, IIT-BHU,Varanasi, there has been 40-50% improvement in quality of water in Ganga

https://twitter.com/i/status/1246640516659400706

I thought the leather tannery effluents were linked to sewer sewerage treatment plants and only treated water was being let into ganges.

ashbhee
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby ashbhee » 05 Apr 2020 21:02

More than 60 % of petroleum is used by 2 and 3 wheeler's. https://www.financialexpress.com/auto/b ... c/1306662/

Electric 2 and 3 wheedlers are catching up to the cost of petroleum once. This is a low hanging fruit. It will take a long time for electric cars to become affordable for majority of Indians but 2 wheelers are already here.

https://economictimes.indiatimes.com/in ... 535138.cms

It is easy to swap battery for 2 wheeler. Commercial operators like pizza delivery, courier delivery, auto drivers etc can have duplicate battery. While they drive in 1 set of batteries they can have another standby battery back at office / home charging. When they come back to base to pick up more goods to delivery they can swap batteries as well.

Govt. must start creating infrastructure, incentivize private sector to do the same. Setting up charging centers, battery swap centers is chicken and egg case. Not enough electric vehicles to invest in charging infrastructure and no infrastructure for people to buy electric vehicles.

Govt. should provide the necessary nudge to set the ball rolling.

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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby sudarshan » 06 Apr 2020 00:33

My key takeaway from that Yamuna video - when the guy says "the air is clean, no foul smell anymore, the water is clean. There is no need to clean the Yamuna, if people just stop dumping into it, the river will clean itself." So all that expensive technology to clean up the river might not be necessary (note - I said "might"), if the pollution sources are tackled and nullified. This might vary from river to river, of course, depending on flow rates and the nature of the pollution, stagnant water isn't going to clean itself so fast, and if the pollution doesn't flow with the river, then it isn't going to go away so easy either.

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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby SBajwa » 07 Apr 2020 03:52

Report about pollution level across India


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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby Rishirishi » 28 Apr 2020 22:42

sudarshan wrote:My key takeaway from that Yamuna video - when the guy says "the air is clean, no foul smell anymore, the water is clean. There is no need to clean the Yamuna, if people just stop dumping into it, the river will clean itself." So all that expensive technology to clean up the river might not be necessary (note - I said "might"), if the pollution sources are tackled and nullified. This might vary from river to river, of course, depending on flow rates and the nature of the pollution, stagnant water isn't going to clean itself so fast, and if the pollution doesn't flow with the river, then it isn't going to go away so easy either.


Second that. Even if the rivers, soil and air is not as clean as switzerland, it is still MUCH better then before. It if fully possible to make huge improvements just by making a few sacrifices. The cleaning technology exists, but it may add a relatively small cost to the consumer.

Vayutuvan
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby Vayutuvan » 29 Apr 2020 04:02

Super-Porous Material Gives Hydrogen-Powered Vehicles a Boost

APRIL 21, 2020
...
Tech Briefs: How do you envision this kind of material being used to support next-gen clean-energy vehicles?

Prof. Omar Farha: The transportation, storage, and operations of hydrogen-powered vehicles require high pressure compression (i.e., 700 bar), which is both costly and unsafe. They construct the tanks on these vehicles from expensive carbon fiber-reinforced composite vessels. Using adsorbent materials can reduce the compression pressure while maintaining the maximum deliverable capacities of the fuel.
...

sudarshan
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby sudarshan » 06 May 2020 21:59

Many reports of Himalayas now being seen from Bihar, some claiming that Sagarmatha (Mt. Everest) is seen. Apparently this used to be the case back in the 80's, and that has faded from memory, with many now regarding that as an urban legend. That part of Bihar is near Nepal, with the distance to the Himalayas being reported as 205 km.

https://www.wionews.com/india-news/amid ... ops-297050

I think in addition to numbers on NOx, PM 2.5, SOx concentrations (which are of course quantitative and definitive), these kinds of qualitative metrics of visibility can also be a good gauge for ordinary folks to estimate pollution load. We have many towering peaks which ought to be visible from large swathes of the country.


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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby SBajwa » 22 May 2020 04:31

River Yamuna at Vrindivan


Rishirishi
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby Rishirishi » 22 May 2020 06:13

Wow Yamuna this clean, that too in Varanasi . It is fantastic. Pollution can be controlled. Strict western type of environment control could lead to increase of price of consumer goods by 5-10%. But isint it fair that people pay the price to manufacture things in a safe manner? Modhi had a great plan to ban plastic, but they got blinded by industry scaremongering. No much in this world is more important then fresh air and safe water.

sudarshan
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby sudarshan » 22 May 2020 07:04

Rishirishi wrote:Wow Yamuna this clean, that too in Varanasi . It is fantastic. Pollution can be controlled. Strict western type of environment control could lead to increase of price of consumer goods by 5-10%. But isint it fair that people pay the price to manufacture things in a safe manner? Modhi had a great plan to ban plastic, but they got blinded by industry scaremongering. No much in this world is more important then fresh air and safe water.


See if rivers are clean enough for kids to swim in to begin with, then the task of providing piped water to every household becomes that much easier. Less spend on treating the water. Food and drink processing industries spend less on cleaning up water. And so on.

Price of consumer goods increasing (I don't know about 5 to 10% though, is there a reference for this figure?) - there's a saying - "if you think health is expensive, you should try disease." There would be substantial savings in health care costs for 100's of millions from cleaning up the air and water.

Sad to think that it might all go back to the old ways soon after the lockdown is lifted, but a new generation at least got a glimpse of the ideal.

sudarshan
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby sudarshan » 22 May 2020 08:06

Jalandhar to Dhauladhar - ~200 km. North Bihar to Himalayas - ~200 km.

Take the average scattering coefficient for dry air at various visible wavelengths - violet (0.4 mu-m), blue (0.45 mu-m), green (0.5 mu-m), yellow (0.55 mu-m), red (0.7 mu-m) and calculate how much of the incident energy makes it to a distance of 200 km. Rayleigh scattering (which is the relevant phenomenon here) coefficient decreases with the fourth power of wavelength, so there's a very strong (inverse) dependence on wavelength. This is why sunsets and sunrises are red - the blues and greens get totally scattered away over the long path through the atmosphere.

For 200 km distance, assuming dry air, about 37% of red light, 9% of yellow light, 2.7% of green light, 0.4% of blue light, and 0.012% of violet light can be expected to make it through - the rest is simply scattered away. Even a little bit of water will greatly reduce these numbers. This is why one sees hazy objects through fog. Particulates and pollutants will make that a lot worse - which is why one can't see even a few hundred meters through Delhi smog.

The blues and greens from those Himalayan peaks, making it to the eyes of viewers 200 km away, indicates that the air is practically clean of particulates (also quite dry). In the right circumstances, visible distance is a great semi-quantitative estimator of pollution levels.

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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby SBajwa » 22 May 2020 09:16

Thank you Sudarshan Sir.

Amber G.
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby Amber G. » 24 May 2020 02:57

Speaking of light scattering.. a question, I often ask to physics students - why far away mountains look blue while sun around sunset is red.
(Blue light has smaller wavelength than red).

sudarshan
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Re: Policy Changes in India: Electric Vehicles, Pollution Control, Energy Source Mix, Etc.

Postby sudarshan » 24 May 2020 07:17

^ Replied in the Physics thread, doing "pollution control" on this one :mrgreen:.


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