2
votes
1answer
22 views

Impact of ash from barbecue on compost heap

I wonder of the impact ash (probably combined with still existing coal) might have to compost. I know that coal is used to clean water and air. But does it improve compost or does it reduce activities ...
3
votes
3answers
47 views

Alternatives to bottled water in the UK

I live in Devon, and tap water in my household does not taste consistently. When I moved in my current property, the neighbours warned me that they had been buying bottled water since 20 years, ...
2
votes
1answer
23 views

Re-usable packaging options for cheese?

I have a vision for a model of grocery store that would buy food in bulk and package on-site into packaging which is 100% reusable or truly compostable (unlike many types of so-called "compostable ...
-1
votes
0answers
34 views

How can alum stone be melted and make custmise shapes? [duplicate]

Greetings Can we melt Alum and give any shape
5
votes
0answers
54 views

Are any large restaurant chains pursuing better alternatives to recyclable packaging?

Yesterday Kraft Foods announced that by 2025 all of its packaging will be recyclable. (Note that while they include "reusable" and "compostable" in the announcement, they talk almost exclusively about ...
3
votes
1answer
47 views

European energy production figures and graphs

I'm interested in the breakdown of energy production by individual EU country. For the EU I found this site, it's good, but it does not offer the kind of breakdown I'm interested in - I'd like to see ...
1
vote
0answers
19 views

What sort of pellet mill can be used for biofuels?

I'm thinking that it would be useful to have a pellet mill at home to turn biowaste into fuel pellets. It would be nice to turn sawdust and wood shavings into fuel pellets as well but that I think is ...
5
votes
2answers
120 views

What is an environmentally-conscious replacement for white yogurt?

I am looking for an environmentally conscious replacement for white yogurt. I do have a couple of ideas for foods that could work well, but I have very little clue if they are a better choice from the ...
4
votes
1answer
30 views

How to calculate the estimated production by solar PV panels?

I know what is the irradiance in my region, therefore I know what is the maximum expected production when the solar panels are placed optimally (interestingly, the two links provide different optimal ...
6
votes
0answers
36 views

What is the maximum sustainable population of the earth?

This question prompted by discussion regarding this answer to a question about vegetarianism. I recently came across a U.N. review of studies seeking to determine the earth's maximum sustainable ...
2
votes
1answer
65 views

Differences in efficiency between oven, toaster oven, and stove?

Wondering how efficient different cooking methods are (for the sake of example, assume a dish in a cast iron pot heated by stovetop vs. oven). Stove seems to use less energy than an oven (as the ...
-1
votes
0answers
44 views

Solar energy MPPT device with precise 12v out

Is there an MPPT device which outputs exactly 12v DC? Most of my searches led me to 12v chargers, which output a (10% to %20 initially) higher voltage that is optimal for charging the battery type it'...
3
votes
1answer
82 views

Which type of BBQ grill has less of an environmental footprint, charcoal or propane or what?

Of course buying used vs. new makes a big difference, but in any case, if one is set on purchasing a BBQ grill, is there less environmental impact in the production & use of a charcoal vs. a ...
6
votes
2answers
232 views

Can Earth sustain 100% vegetarian population

I'm not asking what will happen if everyone in the world suddenly turned to vegetarian. In an ideal world with current population, can everyone follow a vegetarian diet (except for people who may need ...
4
votes
0answers
50 views

A more useful metric for greenhouse gas emissions reduction targets?

A useful metric for vehicle efficiency is miles per gallon, kilometers per liter, or liters per 100 km. The amount of gasoline used by a given vehicle can easily be understood and compared. Energy ...
4
votes
2answers
73 views

Alternatives to concrete for a flat roof

I am from India and planning to build a house with as little cement, steel and sand as possible. I am looking to keep the temperature inside the home to be minimal since temperature will touch around ...
5
votes
1answer
101 views

Why do island nations generate so much garbage?

THelper's excellent answer to the question "What is current best practice for setting up recycling?" includes a chart showing that New Zealand sends nearly 100% of its garbage to landfills. In a ...
3
votes
1answer
57 views

How do I setup a relevant waste biodegradation experiment?

Every here and there I hear sayings like "plastic is bad, because it only degrades in hundreds/thousands/gazillion years, while paper is much better because it degrades fast" which are followed by ...
1
vote
1answer
65 views

Should storm windows be left open in the summer to reduce hothouse heat gain?

During the summer is it more desirable to have storm windows open, partially open, or closed? I have old wooden, single-pane windows with aluminum storm windows and I have installed energy film on ...
4
votes
1answer
29 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
43 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 ...
2
votes
1answer
56 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 ...
2
votes
2answers
91 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 ...
5
votes
1answer
68 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
54 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
38 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
69 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"...
0
votes
0answers
37 views

Labeling hazardous wastes that are not applicable to ADR

I΄d like to package load of different hazardous wastes in compliance with ADR 2007. So, depending on the waste I use the labels that are pictured below. How can i label the packages of some wastes ...
7
votes
1answer
70 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
50 views

How to setup the below solar configurations?

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
45 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 ...
4
votes
3answers
89 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
34 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
82 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 ...
10
votes
2answers
89 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 ...
4
votes
1answer
83 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
0answers
46 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
53 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 ...
2
votes
2answers
84 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
47 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
2answers
78 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 ...
3
votes
1answer
35 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 ...
3
votes
1answer
118 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
107 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
49 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
39 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
46 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
66 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 ...
3
votes
2answers
71 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
54 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 ...

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