All Questions

4
votes
1answer
35 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
3answers
101 views

Any problem with storing compost in a sealed container for several weeks? Alternatives?

I live in a second floor apartment with a small balcony. In my kitchen I have a small vented container where I place kitchen scraps as I'm preparing food -- like this: About once a week when this ...
3
votes
2answers
79 views

Rough cost-benefit of stopping car to recycle batteries

I use up batteries (both recyclable and not) at an exceedingly slow rate. Stockpiling batteries for proper disposal is not realistic as I will do so for years, if not decades. All the more so, since I ...
4
votes
2answers
102 views

How do I get rid of numerous small pieces of charcoal?

There's a small piece of land used for burning tree branches on bonfire (because that's the easiest way to get rid of them). Most of the material gets burnt to ashes but some of it only turns into ...
6
votes
1answer
86 views

What is the actual efficiency of an air to air heat pump in the winter

We are looking at air to air heat pumps (aka reverse cycle AC units) to replace our existing electrical heaters. Air to air heat pumps claim a COP of 3 or 4 to 1 in the manufacturing literature. ...
0
votes
1answer
58 views

Will garden giant mushrooms survive in a normal septic tank?

I've heard that garden giant mushrooms will breakdown fecal matter, and was wondering if it would be a good idea to put some inside the septic tank to have it break down fecal matter to make it less ...
1
vote
1answer
46 views

How to source sustainable/ethical meat?

There seem to be a lot of resources out there for sourcing sustainably/ethically grown vegetables, but many of the ones I can find seem to be aimed primarily at vegetarians/vegans, and so don't have ...
5
votes
2answers
168 views

Why is the per capita CO2 emissions so much higher in Wyoming than in the Northeast?

Per capita CO2 emissions are several times higher in the "red" states of the West and South than it is in the Northeast. I cannot imagine why. From "List of U.S. states by carbon dioxide emissions"...
9
votes
1answer
131 views

Is Bamboo Plywood More Sustainable than (“traditional”) Birch Plywood?

Greetings Sustainable Livers! 🌱 I am on a quest to discover which is the most sustainable sheet material for making furniture. Found this article on Bamboo Plywood: "Is Bamboo Plywood an Eco-...
1
vote
0answers
60 views

How to setup the below solar configurations? [closed]

I have following components :- – 2 * 250 watt solar panels v-guard – 1 * 12 volt, 150ah battery mtekpower – 1 * 900va inverter v-guard – 1 * 12/24 volt , 50amp charge controller v-guard the ...
4
votes
1answer
48 views

How can I install solar panels far from the regulator?

I'm building a solar installation for a summer camp, and we were looking at the following kit (1000W, 12V) We wanted to have the regulator+inverter in a closed little stall, but that stall is usually ...
5
votes
3answers
101 views

Can the heat generated in a data center be used to heat households and offices?

I've just read the article Microsoft sinks a data center off the Scottish coast (The Verge, 6 June 2018) I understand that the cooling of a data center is a problem. Data centers produce huge amounts ...
5
votes
1answer
58 views

What are the Energy Return on Investment (EROI) values like for biogas?

Biogas seems to be a really great idea but I'm wondering how much energy you get out vs. what you need to put in. I know natural gas is around 10.0 and I was wondering how biogas stacks up by this ...
5
votes
3answers
86 views

on demand water heater - propane vs electric?

We need to replace our (tank) propane water heater. We'd like to switch to a tankless heater, but we're waffling between propane and electric. I saw this question, which was really helpful, but we've ...
9
votes
2answers
97 views

Home delivery versus going to stores: how does fuel usage for transport compare? Any studies available?

We see more and more trucks riding through our streets delivering individual items. This hardly looks sustainable. I wonder how the transport footprint compares with the 'old' delivery model of ...
5
votes
1answer
125 views

What is the environmental impact of meal kit subscriptions (Blue Apron, etc)?

According to Wikipedia, a meal-kit is... ...a subscription service that sends customers pre-portioned food ingredients and recipes for them to prepare homecooked meals. Well-known examples include ...
4
votes
1answer
75 views

Can Asphalt and concrete be recycled at long term?

Asphalt and concrete are substances where a lot of heavy metals and other materials being hazardous to one's health are being "deposited". But what to do with them when concrete and asphalt have ...
2
votes
1answer
56 views

Portable AC or Dehumidifier?

I currently am a recent graduate and I am living in a place that does not have AC. I am looking to buy a portable AC or to buy a dehumidifier. I currently live in Minnesota and sleeping at night when ...
4
votes
2answers
123 views

What's the most environmentally friendly micro USB charging cable…if any?

USB cables seem to be a small but relentless part of throw-away culture. Inevitably, cables stop working well and/or get lost, and a new one is needed. Are there any USB cables produced with minimal ...
1
vote
0answers
49 views

What are some office writing materials made from renewable resources?

My understanding is that many disposable pens use non-renewables like tungsten and polystyrene. Pencils use graphite which is carbon but can be depleted faster than it is used. What are the good and ...
5
votes
3answers
108 views

Are the red worms suggested for vermicomposting considered an invasive species?

I'm considering vermicomposting as a next step to hot composting, and plan to release the red worms directly into my garden bed (using a worm bucket), but wanted to check before ordering a batch of ...
4
votes
1answer
40 views

Is hot composted material still beneficial to worms, or have the worm suitable nutrients already been consumed?

I have a sealed tumbler compost bin because I read that the high heat can help neutralize seeds from weed cast offs, that said I've also been considering the benefits of vermicomposting. As I pay more ...
5
votes
1answer
151 views

Are crypto currencies sustainable?

Except generating a different kind of "money value", what is the sustainable value of crypto currencies compared to the energy consumed to generate them? Compared to currencies working with ...
3
votes
4answers
131 views

What isn't recyclable or compostable?

My community has single-bin recycling. Most consumer-level metal, plastic, and paper can go in there to be sorted at a recycling center. They don't take plastic grocery bags, cellophane, paper towels, ...
3
votes
1answer
51 views

How sustainable is the use of materials such as slate, clam shells and wood for go stones and boards?

I should like to buy some attractive go equipment and am wondering which choices are ethically acceptable, whereby I imagine that sustainability of ecosystems is more or less the only significant ...
1
vote
2answers
45 views

Dealing with waste in countries without waste management infrastructure

In previously sustainable countries, westernization brings unmanageable waste: We get flooded with plastic but don't even have garbage collection. Apparently the result is that 40% of the world's ...
1
vote
0answers
62 views

Home efficiency

Please comment on which design is more thermally efficient. They are roughly the same. The apt is 2' shorter on the out (left) as space is not need for stairs. It is a cooler climate with 70" of ...
7
votes
2answers
404 views

Can mesh produce bags be recycled?

Sometimes produce is packaged in mesh bags, such as the bag of oranges shown below. What are these bags made of, and can they be recycled? If they cannot be recycled, can we do something else with ...
5
votes
3answers
138 views

What capacity solar system is required for new homes under the California 2019 Building Energy Efficiency Standards (Title 24)?

From the press release (emphasis added): Moving to cut energy use in new homes by more than 50 percent, the California Energy Commission [CEC] today adopted building standards that require solar ...
4
votes
2answers
135 views

ecofriendly alternatives to PTFE-based (teflon) pots?

PTFE-based coating seems to be potentially harmful to humans and mortal for birds. PFOA, which is used for making teflon, persists in the environment and our bodies for long periods of time (see ...
3
votes
0answers
52 views

Is there any useful recycling of fibreglass boats or other products made of it?

Lifetime is running out for a large number of fibreglass boats produced about 50 years ago. Many shipyards where they have been produced do no longer exist and last users frequently do not have the ...
3
votes
2answers
121 views

How does one utilize the low pressure of a rain barrel?

We've been considering getting a rain barrel, and I like the idea -- it doesn't make sense to just have the water run off into my yard creating a rut; I'd rather put it to good use. Problem is, my ...
4
votes
2answers
35 views

What chemicals does copper slag release into the soil or water table when it is recycled as a gravel?

We have a client who is considering options for building a compacted aggregate path and driveway. One of the products the stone company offers it called copper slag. Copper slag is the waste product ...
4
votes
1answer
42 views

Can vermicompost tea be used with aquaponics?

Has anyone ever used vermicompost tea with aquaponics? I have found little formal research on the area and am curious if the two nitrogen cycles can be combined.
5
votes
2answers
69 views

Are green roofs more sustainable than roofs with photo voltaic?

Both types of roofs have advantages. Green roofs do not produce energy (in some cases just fruits) but they do not consume that much energy for production of panels, installation and control and do ...
6
votes
1answer
87 views

Are there advantages to putting solar panels on individual homes rather than in large solar farms?

Suppose 10 million new solar panels will be installed in some country this year, and there are two options: A: the solar panels go onto the roofs of 1 million individual houses B: the solar panels ...
14
votes
2answers
104 views

Does transporting plastic offset the benefits of recycling it?

Apparently China has been processing about half the world's waste until this year, and most of that waste is transported over the ocean in large container ships. Recycling plastic uses less energy and ...
5
votes
1answer
80 views

Is delivery of mail to house doors by postal services more sustainable than picking up mail from a central location?

Today there exists more than one mail and parcel services to distribute deliveries. I wonder about sustainability effects, especially when you receive several deliveries a day. When everybody has to ...
6
votes
2answers
312 views

What are the consequences of wasting water in a water-rich country?

I live in Hungary where everyone has access to loads of clean water. Still, common knowledge says that one shouldn't waste water. Apart from the economic factors, like cleaning the water, why ...
4
votes
2answers
42 views

Is there a simple on-line tool for estimating wind turbine power output?

The back-and-forth in the comments on this answer sent me searching for a simple tool that would enable a user to put in a location, wind turbine size, and a few other parameters, in order to estimate ...
6
votes
2answers
101 views

Is flushing dog faeces down the lavatory better than bagging and binning them?

I have taken to collecting our dog’s fæces in lavatory paper and flushing them rather than using the little plastic bags one can buy for the purpose and putting those in the (non-recycling) rubbish ...
4
votes
1answer
104 views

Can hot air move horizontally without a fan (vertical is easy)

Passive solar thermal, taking cool air at bottom and hot air out at top is easy. But can the same 'hot air rising' system be made to work horizontally. IE long black tube on a narrowboat Any ideas ...
0
votes
2answers
134 views

Baking Soda and Slugs

Yesterday I went through my garden and removed the first slugs of the year from my tomatoes. The same question as every time: What to do with them? Throwing them into a bucket of water is no good; ...
3
votes
1answer
29 views

What packaging should I use to ship vermicompost to customers

I know that vermicompost needs to "breathe" as it has living matter within. I've tried in vain to find out what material I should use for packaging, as I need to ship (by truck, up to 1500 km, in a ...
3
votes
4answers
183 views

Are trees more productive than wind turbines?

Tree farm assumptions: 250,000 square meters (m2) tree farm A 1 ton tree contains 1 MWh of energy Each tree takes 10 m2 of space Total energy for this farm is thus 25 GWh Wind farm assumptions: 5 ...
5
votes
2answers
77 views

Is “buying local” sustainable, with reference to food made from animals?

No doubt vegetables, fruits and salads produced locally in most cases provide local jobs and usually best fresh quality. On the other hand a lot of animal food (soy, corn, and others) are shipped ...
5
votes
1answer
51 views

Can I recycle waxy cardboard (in Greater Vancouver)?

Does anyone know what to do with these containers? Even though some of them are labelled "#3 Please recycle this container" I'm quite sure they can't be put with mixed paper or cardboard recycling ...
7
votes
3answers
185 views

Temperature equalisation throughout the house

We have been living in our home for a year now, so have seen both summer and winter, and we are now looking to solve the heating and cooling problems we have. Heating The walls and roof of the house ...
4
votes
2answers
116 views

What feed is typically used in cricket farming?

Insect farming has been hailed by some as a sustainable alternative to animal agriculture because the requirements for land and water are much lower. But just as livestock depend on plant food that ...
11
votes
2answers
128 views

How do plastic bags and other waste end up in the ocean?

There are many photos of the ocean, which in some parts is littered with all sorts of waste, often plastic bags, containers etc. I just wonder - how do such large amounts of plastic land in the ocean/...

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