All Questions

1
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0answers
12 views

What actually happens to LDPE Type 4 plastic when it is recycled?

When LDPE Type 4 plastic used in plastic wrapping is recycled, what is it used for?
0
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0answers
9 views

When laying wood chips is it better to put down cardboard on top of grass, or just leave it as is?

I'm going to be putting down about 2,000 yards of wood chips on a garden (to kill off all the plants there) in an area on the edge of a swamp this year, and am wondering if it would be just as ...
1
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0answers
14 views

What percentage of LDPE Type 4 plastic that you hand in to be recycled is in fact recycled?

What percentage of LDPE Type 4 plastic that you hand in to be recycled is in fact recycled into something useful? I ask this because I read that China stopped accepting plastic to be recycled ...
1
vote
2answers
23 views

Is there a scientific consensus whether lifestyle or amount of human population the biggest problem

When discussing with a colleague about ecology yesterday, we had agreed on the following premise : Before industrial age, world population was low, and the environment was not significantly damaged ...
2
votes
2answers
38 views

Using LEDs to generate electricity

I recently saw an article that said that LEDs can use electricity to produce light or they can turn light into electricity. If this is true, could the excess light that we have coming into our homes ...
2
votes
2answers
32 views

What's the best way to dispose of scrap lumber?

I recently purchased a home in Wisconsin, USA, and in the process of making repairs and upgrades I find I'm generating a fair amount of scrap lumber each month. I keep whatever I think I'll be able to ...
3
votes
1answer
40 views

How do I recycle Kidde brand smoke detectors?

I live in the United States and I have a non-working Kidde ionization smoke detector. I've read that these smoke detectors should be recycled because they contain some radioactive material. However, ...
0
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0answers
14 views

What pig species will survive a USDA zone 4A winter outside?

I'm looking to purchase meat pigs to start an operation, and am wondering what species would be best to raise outdoors during the winter, and summer.
0
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1answer
19 views

How is amount of wood measured?

There has been some confusion here related to measurement of amounts of wood. There are at least the following units of wood measurement: loose cubic meter of wood stack cubic meter of wood solid ...
3
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2answers
78 views

How much CO2 is emitted after 1 hectare of woodland gets burnt in a wildfire?

Wildfires are getting more and more common due to dryer and hotter summer seasons. I'm interested in the impact of wildfires in terms of CO2 contribution in the atmosphere. I'd like to get a gross ...
2
votes
2answers
46 views

Embodied carbon in limecrete vs concrete

I'm planning an extension to my home and one of the many decisions is whether to go for a standard concrete slab over hardcore, or limecrete over blown glass with concrete strip foundations (e.g. ...
1
vote
3answers
105 views

What will life be like in 2050? [closed]

I've seen a lot of stuff saying researchers predict we'll run low on fossil fuels in 2050 and that pollution will be a big problem then. Does this mean that life will suck then? What would things be ...
2
votes
2answers
54 views

Are there any active vehicle to grid programs around the world that are accepting customers?

It seems like people have been hyping the benefits of vehicle-to-grid (V2G) for decades. The basic premise of V2G is that electric vehicles, when plugged in to the grid to charge, can offer services ...
4
votes
1answer
44 views

Can i use expired can goods in my cut grass to make mulch

Just want to know is it safe to use expired can goods for compost making, examples: Diced tomatoe,evaporated milk,turkey gravy,different Campbell soups,can pumpkin,coffee
2
votes
2answers
78 views

How to persuade people that scrappage schemes & suchlike are a bad idea?

One idea frequently cited as a way of reducing pollution is the use of scrappage schemes and low-emission zones to persuade people to replace their old cars with newer, 'more efficient' ones. IMHO ...
1
vote
0answers
46 views

Aquaponics system in apartment livingroom

I am interested in building my first Aquaponics system in the livingroom of a 70m2 apartment. I plan to have a 100 litre fish tank with a 75litre grow bed. I measured the temperature to be about 15-25 ...
2
votes
2answers
56 views

What is marginal energy?

I answered to a question and used the term "marginal energy". The answer wasn't understood by all, so I'm going to expand on the term to illustrate how it works. So, what is marginal energy?
0
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2answers
45 views

A hydropower based power-generating fitness system and some questions

I'm currently researching and experimenting a system concept about hydropower-based fintness. I recorded my initial experiment footage and you can watch the video on Youtube. Befor talking about this ...
1
vote
0answers
32 views

Adding solar to a small van.. just need steady 12v source not a battery bank.. question about switches and isolators? [closed]

I have a 2018 Ram Promaster city cargo van with OEM 12v 70AH 120RC Sealed Led acid battery and a 160a alternator. Sitting on top of the battery I have a 1200 Watt pure sine 100v inverter connected ...
3
votes
1answer
53 views

How can I stop using HFC refrigerants?

Are there any HFC-free air conditioners on the market? How about refrigerators? Given the massive warming potential of HFCs I would expect there to be more information on how to avoid HFCs and on what ...
0
votes
1answer
30 views

Is there any Pellet molder alternative?

Our groupmates have a research topic that includes making a plastic pellet. We have to think of an alternative way to produce plastic pellets out of melted HDPE plastic bags since we're still students ...
2
votes
2answers
62 views

Is there a recent life cycle analysis for cloth diaper and for disposable diaper?

I am looking for specific studies on the life cycle of cloth diaper versus disposable diaper. The municipality I work for wants to establish a compensation program for parents who want to choose a ...
3
votes
1answer
46 views

How can I calculate from peak power (kWp) to energy per day (Wh/day)?

According to this Wikipedia article (Dutch) there is a rule of thumb that the energy output of a solar system is 850 to 1000 kWh per year per Wp. However, this takes the grey climate of the ...
2
votes
1answer
54 views

Is the Food Cycler a good option for composting?

I do not have time to do a good job composting so the "Food Cycler Platinum Indoor Food Recycler" seems like a good idea despite its price. Does it release CO2 or methane? Does it consume so much ...
5
votes
1answer
96 views

How many times do you need to re-use cloth napkins to offset their impact?

My local municipality has a "Waste Watchers" program that provides resources for reducing the quantity of waste sent to landfills. One of their tips is to use cloth napkins instead of paper napkins. ...
2
votes
2answers
91 views

What is the most commonly available eco-friendly writing instrument?

How would you rank the following in terms of damage to the environment: Pencils (regular) Mechanical Pencils Single-use ball point pens. Refillable ball point pens. Fountain pens The eco-friendly ...
4
votes
2answers
62 views

Are there any good diy examples of home level STES or BTES

I just came across the concept of STES - Seasonal Thermal Energy Storage and more specifically BTES - Borehole Thermal Energy Storage. (Example project) I wondered if anyone had built a small scale ...
2
votes
1answer
244 views

What is the wind wake effect and why is important for wind turbines?

I was reading about wake models. However it is unclear to me how they are used to model wind turbines. Could anybody explain me what are wake models and why it is important to predict wakes in wind ...
0
votes
1answer
67 views

What level of light intensity (lumens) do you need across a solar panel in order to obtain 15% energy efficiency?

What level of light intensity (lumens) do you need across a solar panel in order to obtain an incident-light to energy-output efficiency of 15%?
4
votes
1answer
67 views

What do I feed my snails?

So I've recently gotten into foraging and found a site called eattheinvaders.org that encourages people to eat invasive species. One of the most invasive species here in California is the common ...
2
votes
1answer
33 views

Efficiency considerations of forced air vs. hydronic central heating

For a building that is centrally heated by local fuel combustion (i.e. heating within the building rather than district heating), one may distribute the heat throughout the building using as a energy ...
0
votes
2answers
129 views

Is hydrogen a good way of storing energy from excess hydroelectric generation? [closed]

Referring to hydro electricity generation, a lot of what we produce is wasted as the buyer buys only the minimum generation. What would be the appropriate measure to use that excess energy? Is ...
2
votes
3answers
55 views

What function does hanging a compost bin serve?

I just came across a school project to build a hanging compost bin: Lakeview Compost Bin. The benefits of composting have been a frequent topic here, but I'm wondering what purpose is served by ...
5
votes
1answer
58 views

Recycling with stickers

So many of our products have stickers/tape on them, i.e. boxes, glass and plastic. I have been removing stickers/tape from boxes (except amazons recyclable tape) but do I need to be doing this for ...
4
votes
1answer
59 views

Nike water bottle breakdown?

So many know that single use plastic water bottles break down with repeated use. Well the other day, I decided to buy a reusable water bottle. I am on a budget and picked up a Nike Hyperfuel 32oz. Its ...
4
votes
2answers
55 views

Does air duct cleaning increase heating efficiency?

I recently moved into an older house with a natural gas-burning forced hot air furnace. There are no records of the ducts being cleaned, and based on the layer of black grime I can see, they are quite ...
3
votes
1answer
58 views

Roughly, how much water does it take to grow 50 lbs of fodder for most dairy cows in the US?

I'm looking for a ballpark number. Obviously fodder can include more than just one crop (e.g., barley/corn or hay/straw), and that's why I am having trouble finding a figure. Aside, I found that an ...
2
votes
1answer
66 views

Is cooking with palm oil healthy? [closed]

Cooking oil is very important to get a good taste. Is cooking with palm oil healthy?
3
votes
3answers
122 views

What's the impact of throwing plastic in the bin?

There's a lot of fuss about reducing plastic usage, and one of the main reasons seems to be that otherwise it will end up in the environment, particularly the ocean. But if I dispose of the plastic ...
2
votes
1answer
44 views

What are the uses of bones from the different animals bred industrially?

The food industry grows animals for meat, but some parts cannot be sold. What is the final use of bones from the different animals grown industrially? pigs, beef, poultry.
1
vote
1answer
94 views

Is it possible to harvest energy from the storm?

My idea of a device for harvesting energy from wind, waves and especially storms is introduced in the manuscript below. If used in reality, this device will harvest significant amounts of energy from ...
8
votes
4answers
156 views

Is burning wood the same as letting it biodegrade from a CO2 emissions perspective?

I always thought, that burning wood, would be bad for the total CO2 in the atmosphere until I heard it being pitched as "renewable energy". Now I am slightly unsure. The logic goes like this: Wood ...
2
votes
3answers
100 views

Is it okay from a sustainability viewpoint to buy a christmas tree?

I am thinking about buying a christmas tree but I want to know if that is or isn't good from a sustainability viewpoint.
0
votes
2answers
43 views

Ongoing source of distilled/filtered water for humidifiers

My family has several table-top humidifiers (the cool-mist/nebulizer kind) in the house that we use a lot during the winter. Distilled water is recommended for using in humidifiers because the ...
4
votes
1answer
58 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 ...
1
vote
2answers
68 views

Which appliance should I replace first?

I recently bought a home with many appliances approaching 20 years old. As I expect that many of them will fail over the next several years, I want to get a head start on replacing them (since last-...
3
votes
2answers
90 views

How can an individual support mass reforestation?

There's lots of benefits and threats to forest, and given our current, pervasive, and severe ecological challenges, forests are more important than ever. However, it's not obvious what the best ...
1
vote
1answer
60 views

How much energy does it take to store 1 Terabyte of data in the cloud?

Some time ago I saw a documentary/infotainment program on television where they said that on average storing 1TB of data in the cloud costs 41 kWh of electricity per year. There was no further ...
4
votes
0answers
54 views

Are machine-washed rags more sustainable than paper towels for any & all household messes?

Anything single-use is suspicious in terms of sustainability, especially if it goes to the trash afterwards and is not recyclable. Considering that, and the disproportionate use of paper towels by the ...
5
votes
3answers
160 views

Why are my LED light bulbs so short lived?

I thought the idea of LED is, that the light bulb has a very long life and uses very little electricity. I have not invested in full LED lighting but tried the LED bulbs, you screw in your normal ...

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