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Our current supply chain almost always buried waste in landfills, unfortunately. Landfills are not expected to be used for agriculture almost ever because of co

Our current supply chain almost always buried waste in landfills, unfortunately. Landfills are not expected to be used for agriculture almost ever because of contamination with all sorts of waste, heavy metals, etc. (I think a serious decontamination effort would be needed). Of course, it would be good if organic waste was separated and returned to the environment. I've also been wondering about soil depletion. What we do today is use fertilizers, which can be extracted from the ocean or air as Nitrogen, Phosphorus and Potassium, they're not expected to be depleted ever (and they're the basic elements needed for plants, along with CO2). However I don't know the situation of other micronutrients, such as iron, selenium (well known to vegans), copper, etc. (copper is already very difficult and costly to extract). It shouldn't be impossible to fertilize micronutrients as well, but that's going to be an additional cost and difficulty to agriculture in the future. In regards to this being eco-friendly or not, it really depends, and most likely a 30% reduction in concrete usage would be well worth it, even with soil depletion taken into account. As a senior internet citizen though, I'm skeptical of those claims, specially with large numbers as those (you see one of those every now and then...).

onetimeuse92304 3y ago
Again, I think it is important to remember WHAT exactly are we comparing. I am not comparing a) throwing coffee grounds into landfill, to b) using coffee grounds for cement. I am comparing a) collecting coffee grounds and use them as a fertiliser, vs b) collecting coffee grounds and using them as an ingredient for cement. Essentially, if you can collect coffee grounds for cement you can also collect them for all sorts of other uses. What I am saying is that, once you went through the trouble of collecting coffee grounds, there are better ways than to use them for cement.

onetimeuse92304 3y ago

Again, I think it is important to remember WHAT exactly are we comparing. I am not comparing a) throwing coffee grounds into landfill, to b) using coffee grounds for cement. I am comparing a) collecting coffee grounds and use them as a fertiliser, vs b) collecting coffee grounds and using them as an ingredient for cement. Essentially, if you can collect coffee grounds for cement you can also collect them for all sorts of other uses. What I am saying is that, once you went through the trouble of collecting coffee grounds, there are better ways than to use them for cement.