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1500 questions
9
votes
2 answers
How can electricity grids successfully incorporate high (50%+) penetrations of PV and wind?
Although most of the renewable energy currently consumed by the world can be turned on and off at will pretty easily (hydro and biomass), there are two potentially huge supplies, wind and PV, that are more restrictive: the variations in their output…
410 gone
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1 answer
Is lower grammage paper with same thickness indeed greener?
I've seen a couple of offers of very white office papers that are claimed to have the same usability but slightly lower grammage (grams per square meter). One example is UPM Kymmene Yes Paper - they offer Yes Light with 70 gsm grammage and Yes…
sharptooth
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9
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4 answers
Is plastic recycling mostly green washing?
The general public has been told for years to carefully bin their plastic litter in the proper bin. Most people believe that doing this actually results in protecting the environment from plastic pollution.
This article mentions that the rate of…
Erwan
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9
votes
3 answers
How to buy an ecofriendly printer that accepts refilled cartridges?
I have a HP Deskjet printer that does not allow me to use refilled cartridges, therefore every time it runs out of ink I need to buy a new cartridge, which implies a lot of waste.
I would like to know how to buy a printer that does not present this…
Monica G
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1 answer
Where can I find a detailed technical description of a system to use Biogas as a Vehicle fuel?
It is basically possible to upgrade Biogas to something very close to natural gas, and then use it to replace said gas. Biogas to grid is a mature technology now, with about 100 active plants in Germany alone. It is also often discussed to use the…
mart
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9
votes
3 answers
Best sustainable way to keep squirrels from eating our tomatoes
The internet contains answers to this question that don't take into account sustainability. This Mother Nature Network article probably comes the closest I've found. The last resort method they propose is shoot all the squirrels and notes that it's…
Duncan
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9
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3 answers
Should municipalities consider rain barrels to be suitable substitutes for rain gardens? (Rain barrel vs rain garden)
My county requires rainwater management to be incorporated into lot plans for new construction if a certain percentage of the lot is impervious. This seems a sensible measure.
We are under the impression that rain gardens are the only approved…
Jeromy French
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9
votes
5 answers
How to filter/dewater water mixed with water-based paint
PROBLEM
I would like to find the best way to filter 2 cubic meters of water which is full of water-based paint.
This water is used in a closed-loop circuit in a Spray booth.
The water does not need to be drinkable but just clear.
The recycling…
MartinL
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9
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2 answers
How immediate are the benefits from carbon offsets?
I've noticed that carbon offsets are usually sold by the tonne of CO2 equivalent, without any information about when that offsetting will occur. Given the urgency of the climate crisis (between 1.5º and 5.0º C of warming by 2100) it seems important…
Nic
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8
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1 answer
Is working from home a more sustainable choice?
Due to the recent COVID-19 outbreak and subsequent lockdowns in multiple countries, there have been reports of marked decreases in day-to-day pollution hanging over cities, such as this report on Beijing. This is being attributed in part to the lack…
Robotnik
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8
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1 answer
How much CO2 does a plane produce per additional kg of weight?
There are many figures regarding how much CO2 is emitted per passenger and per km.
However, I have not been able to find anywhere how much CO2 would an airplane emit if it has to carry an additional kg of weight.
I think it would be a very…
J0ANMM
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8
votes
4 answers
What is the sustainable house insulation suitable for a very hot climate?
In my country the maximum temperature reaches to 50 degree Celsius. Normally it is a dry weather but only for two months, July and August very humid.
On the other hand, in winter it is very cold for only two months December and January, when it…
DataMiner
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8
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2 answers
How much of a reduction of carbon emissions can be achieved if a diesel bus is switched out for electric?
My city council has pledged to try and be carbon neutral by 2030 as part of the Global Covenant of Mayors and are investigating ways to achieve that.
I'd like to bring forth an idea to replace our aging diesel-fueled buses with more sustainable…
Robotnik
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8
votes
4 answers
What are useful uses for orange peel?
Lately, I'm getting more or less addicted to oranges and I'm collection way too much orange peel compared to what my starting compost heap can handle.. Is there something I do with it, other than throwing it in the garbage can?
I read about using an…
Sironsse
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8
votes
1 answer
How to ripen fruit fast without harmful chemicals?
I want to know that how I can ripen fruit as fast as possible. Fruit sellers are using chemicals to do that which is harmful. I would like to know if there are any safe chemicals or other techniques that can hasten the ripening of fruit sustainably.
Yadav Chetan
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