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6
votes
1answer
144 views

After how many litres does Soda Stream get more sustainable than bottled sparkling water

Soda Stream is advertised as a more sustainable alternative to buying sparkling water in bottles. The main selling points are that no water filled bottles need to be manufactured, transported and ...
6
votes
1answer
178 views

How can I figure out what's using so much electricity in my home?

I recently moved into a new home with 2 other housemates (joining 1 who already lived there) and our combined bill for electricity is far higher than I expected. Now we're using just over 40 kWh per ...
6
votes
0answers
48 views

Freezing Ice Pops Sustainably

When storing ice pops for retail customers, I need to package them in a freezer-safe ,clear wrapping. I would like for it to be compostable, but apparently the compostable cellophane options are not ...
6
votes
0answers
118 views

What is the Degrowth perspective on ad blocking and online advertising?

From a Degrowth perspective, how would one argue in favour or against ad blocking and online advertising? To give a perspective on Degrowth, Degrowth is a political, economic, and social movement ...
6
votes
2answers
85 views

What is the effect of hot weather on the performance of electric vehicles?

Allied to the question: How does cold weather affect electric vehicles? How does hot weather affect electric vehicles, particularly when the atmospheric temperature is above 30 C and closer to 40 C,...
5
votes
1answer
77 views

Biomass: Digestor/Reactor vs Gasifier Efficiency

When using biomass for energy, two popular options are reactors and gasifiers. The first uses anaerobic micro organisms to convert the biomass to fertilizer and a methane rich gas mixture. The second ...
5
votes
0answers
29 views

Which part of the process of estimating wind resource has the potential greatest benefit from further research?

Estimations of the potential generation resource of wind power happens at all scales from very coarse global estimates, to detailed estimates at individual sites based on specific locations and ...
5
votes
0answers
162 views

What are the advantages and disadvantages of using lidars over sodars for wind resource assessment?

The process of wind resource assessment has used a variety of methods over the years; more recently, lidar - radar-style sensing using lasers; and sodar (similar, but using sound) have come to ...
5
votes
1answer
93 views

What's the environmental impact of industrial sources of store-bought bagged soil? Is it a 'net positive' in terms of building soil & storing carbon?

To help grow lots of trees and ecologically friendly gardens, I've bought lots of bags of soil over time. There are better, more local sources of soil/mulch/compost, but nevertheless I go the route of ...
4
votes
0answers
50 views

Are there petroleum products which do not have practical alternative sources?

According to the U.S. Energy Information Agency, about 23 L (13%) out of every barrel of oil is turned into "other products": The other 150 L or so is turned into things which are burned ...
4
votes
1answer
41 views

How effective are shrink plastic insulation kits for residential windows?

I live in an older home with windows that build up frost in the winter, which indicates they aren't insulated very well. I am thinking of installing kits like these over the windows: However, before ...
4
votes
1answer
37 views

How to keep my tankless water heater safe in a cold room?

I have a room in my apartment that can sometimes get around 40°F (4°C), and that's where my new tankless water heater is stored. Should I take any special precautions to keep my pipes from freezing or ...
4
votes
1answer
45 views

Is using multiple MPPT controllers with a solar panels array, to mitigate effect of shadows a myth?

So my installation is for a sail boat. There's a lot things like rigging sails etc, that can create shadows on part of the array and this is constantly moving around. I've seen a lot of debate online ...
4
votes
2answers
133 views

What to do if a small amount is left over in the toilet after flushing?

Apologies in advance for a disgusting question. I share a bathroom with someone, who has complained that after I flush the toilet, not all the waste gets removed. When I flush once, 95% of the waste ...
4
votes
0answers
21 views

Why is the usage factor for utility-scale storage declining in the U.S.?

This chart from the U.S. Energy Information Agency was published last week in the article "EIA expands data on capacity and usage of power plants, electricity storage systems": The text of the ...
4
votes
1answer
56 views

How effective is a Smoke Control Area at reducing particulates? (UK)

Smoke Control Areas are in place in 195 out of 434 local authorities. 53 of those cover the entire local authority. Smoke Control Areas make it illegal to burn coal and other smokey fuels and ...
4
votes
0answers
60 views

How much CO2 is currently captured in the EU per year with CCS technologies?

I wonder how much carbon dioxide is captured per annum in the EU at the moment. In this article (p. 5), one can read that the two largest CCS facilities in Europe currently capture around 1,55 Mt/y. ...
4
votes
0answers
69 views

How to manage a largish hugelkultur?

As part of the site clearance for the in-fill house I'm building at the rear of the section I have had to remove a 100 year plus old pine ( which the neighbour wanted to remove as he felt it was ...
4
votes
0answers
68 views

Which is more sustainable for eyewear/spectacles : Glass lenses or Fiber-plastic lenses?

I am about to get my first pair of spectacles. From where I am, glass lenses need a frame. Fiber-plastic lenses can be frameless. It's well known Fiber lenses are much more durable and longlasting. ...
4
votes
0answers
67 views

Any sustainability difference between anionic/cationic/nonionic detergents?

Are any of these three types of detergents more or less damaging to manufacture and/or use or dispose of than the others? I realise these are rather broad classes, but this is usually the only detail ...
4
votes
0answers
44 views

Pond for largemouth bass / perch

In NE Ohio (Zone 5 - 6) how large of a pond would I need to raise largemouth bass or perch for food production. What is the minimal depth and diameter required for 100 fish?
4
votes
1answer
39 views

Large-scale test data on LED, CFL, and incandescent brightness and longevity

A google search for "comparing LED, CFL, and, incandescent brightness" returns hundreds of charts showing what equivalent wattage of LEDs and CFLs are to match an incandescent bulb. This is fine for ...
4
votes
1answer
79 views

How do I choose the most sustainable chocolate?

I've heard that the production and import of chocolate has some consequences including deforestation, excessive use of pesticides and CO2 emissions. There are also concerns about exploitation of ...
3
votes
1answer
74 views

Is Hygenic Earth Energy feasible?

This company: https://proton.energy/ Is trying to inject oxygen into old oil wells for it to combust and extract only hydrogen using steam reforming and a filter. Making steam reforming happen ...
3
votes
0answers
56 views

How to hatch eggs at home without a bulb-based incubator?

I came across some videos on YouTube where they used a home-made incubator to hatch hen eggs. The system was nothing fancy: A cardboard box with a light inside Some aluminum foil near the bulb (...
3
votes
0answers
44 views

Is there a neutral LCA comparing wood to composite materials?

I have seen competing information about whether it's a more sound environmental choice to choose real wood or composite decking materials. Different conclusions are drawn depending on whether the ...
3
votes
0answers
41 views

Where can I find the paper “Life cycle sustainability assessment (LCSA) for products and processes.”

I am currently studying circular economy theory. More specifically life cycle sustainability assessment theory. And I notice that a paper in this area that presents a lot of citations is Finkbeiner, ...
3
votes
0answers
24 views

What is the connection between detergent enzymes and sustainability?

I was looking at the shelf with "ecological" detergents in a store and noticed that most of them boasted of being enzyme-free. I wondered why this is a preferable quality in a detergent, ...
3
votes
0answers
40 views

Designing an electrical off grid system for winter

I'm currently planning the conversion of a panel van into an RV including heating, water, and electrical. The part which I'm not confident about is the reliable supply of electrical power in the ...
3
votes
1answer
154 views

Should I purchase new tins or plastic refills for chocolate powder?

A few brands of chocolate milk mix come in re-sealable tins like this: It is also possible (and slightly cheaper) to buy 'refill packs', in order to reuse the tin. However, these refill packs are ...
3
votes
0answers
30 views

How much renewable energy is curtailed around the world?

CAISO, the California electric grid operator, provides daily and historical reports on wind and solar curtailment: I started looking for similar data from MISO, the grid operator where I live, ...
3
votes
0answers
30 views

How much additional CO2 emissions will result from recent changes to US vehicle regulations?

From the Guardian, March 31, 2020: Trump to roll back Obama-era clean car rules in huge blow to climate fight (emphasis added): The Trump administration is rolling back the US government’s ...
3
votes
0answers
39 views

Are there any studies comparing the ecological footprint of an e-ink tablet with traditional pen and paper?

I am a graduate student in physics and I was considering getting a paper tablet like the reMarkable or the Sony DPT to replace the notebooks where I do calculations and take notes. But I was wondering ...
3
votes
0answers
286 views

What is the environmental impact of detergent pods?

Laundry detergent pods became popular around 2012. Rather than measuring out detergent, you throw a pod in your washer and it does the rest. The "capsule" is made from a type of plastic that is water ...
3
votes
0answers
25 views

What is the time basis for offset programs?

I'm kicking around the idea of creating a local offset program. My question is: what is the time basis for offsets? Best seen with an example. Say I build a solar PV system that costs $10,000 and ...
3
votes
0answers
51 views

WTW versus LCA approach in carbon footprint calculations?

I recently did some carbon footprint calculations for the organization I work for. I used conversion factors I found at the Dutch CO2 emission factors website. This website lists standard emission ...
3
votes
0answers
61 views

Is Tawashi really suitable for dishwashing?

As a step to reduce my waste I planned to make a tawashi to replace artificial dishwashing sponges. I had a t-shirt not suitable to be donated, waiting to be upcycled, so I made t-shirt yarn out of it ...
3
votes
1answer
106 views

Distinguishing between polyethylene and polypropylene plastic food packaging for recycling

I want to recycle as much food packaging plastic films as possible (I'm willing to clean and dry them). As far as I know, food packaging films are only made from 3 types of plastic: polyethylene (PE), ...
3
votes
2answers
118 views

CO2 track of staying in huts which are supplied by helicopter

How much CO2 do we produce by sleeping on average in a hut (including breakfast and dinner)in high-altitude > 3000 m)? Let's assume that the hut offers 50 beds and that a helicopter has to supply the ...
3
votes
0answers
81 views

Is there a “break even point” or life cycle analysis directory or calculator that's kept up to date?

I've seen plenty of one-time calculations dedicated to one specific thing (usually plastic vs metal straws, or reusable vs disposable cups) but don't know of any organizations or even blogs that ...
3
votes
0answers
62 views

Is burning PVC with municipal waste 'acceptable' nowadays?

I started to write a comment under the question Is there an efficient way to dispose of credit cards? about the dangers of burning PVC, because this can lead to dangerous chlorine compounds in the ...
3
votes
0answers
76 views

What is the environmental impact of recycling beverage containers, by material?

I just read the article "Oregon Launches First Statewide Refillable Bottle System In U.S.". Discussing the environmental impact of this system, the article says: Until that facility [in Portland, ...
3
votes
0answers
66 views

Are there any articles that describe to correlation between the forecast errors for renewable energy resources, depending on the distance?

In an article by Zhang et al., the authors describe how the (normalized) forecast errors of different renewable energy sources (like solar panels and wind mills) are correlated. To that end, they ...
3
votes
0answers
75 views

Environmental benefit of recycling small cables from electronics and holiday mini lights?

For electronics, I've watched some online videos explaining commercial shredding operations and some home based scrapper videos showing how they strip insulation from common household electrical ...
3
votes
0answers
495 views

Ammoniacal Nitrogen (NH3-N) test and sources of ammonia in natural bodies of water

One parameter that's involved in water quality assessment is ammoniacal nitrogen (NH3-N), a measure of ammonia. Where does ammonia come from in natural water sources, such as a river? What factor ...
3
votes
0answers
110 views

Are talcum powder tins more sustainable than the ones that come in plastic boxes?

I was shopping and as a trial, I bought a talcum powder in a tin container instead of the usual ones that comes packaged in a plastic box. The material looks like a tin, although one cannot tell from ...
3
votes
0answers
121 views

Which type of portable heaters are best suited to use in a static caravan?

I am looking for 2 portable heaters to use in a static caravan. One to go in the children's bedroom (safe to leave on at night), the other to go in the living room. Which types of heaters would be ...
3
votes
0answers
66 views

Relationship between number of public rubbish bins and MSW(municipal Solid Waste) among countries and areas

Is there any research really about the relationship between the number of public rubbish bins and MSW? Any studies about it? Do municipalities with less public rubbish bins tend to produce less MSW? ...
3
votes
1answer
73 views

Should a projector be turned off if it won't be used for five to ten minutes?

The conference rooms in my office have projectors mounted on the ceilings, typical of many offices. During the day, several meetings will be scheduled in the rooms, with perhaps five to ten minutes ...
3
votes
2answers
132 views

Hyper carbon accumulator(s) for backyards

I am curious, what people could do with a small piece of land like their home backyard (say originally it is a regular lawn smaller than 20m^2, in temperate continental climate (so pretty harsh)) to ...

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