Better disposable coffee cups can be made with waste from sugar cane
economist.com
economist.com
Not a chemist, but AFAIK current market available 'biostarch polymers' (AFAIK always PLA; which may be marketed as made from corn, sugar cane, etc.) are actually extremely environmentally unfriendly because of the massive embodied energy required to create the industry-ready polymer from the bio-waste material. Their single benefit is nominal biodegradability.
It is far better for the environment if single use plastics are just minimized, for example by re-using all containers in your supply chain. This has therefore been our focus.
For the last mile to the consumer, however, it's unfortunate that people are now used to disposables, so it's likely going to take a technology shift like Dr. Zhu's or an improved form of traditional techniques such as palm leaf wrapping (common in South and Southeast Asia) or single-use clay pottery (India) to improve the situation.
Our company have been considering sponsoring an open robotics challenge in this space (commercially viable deployments of traditional palm leaf wrapping). If anyone would like to co-sponsor, get in touch.
I suppose that depends on where the embodied energy comes from, no? If instead of oil or coal, it's all hydro or nuclear, then presumably the biodegradability is an overall benefit?
Second, I'm curious... how actually does one measure the tradeoff between energy usage and biodegradability? The former would seem to be measured in reduction of CO2 output, while biodegradability is in reduction of non-biodegradable mass. But I can't even begin to imagine how to compare the two.
Is there some standard methodology? Or does it just come down to people's personal preferences?
Bioaccumulation of plastics is certainly terrifying, but I just haven't seen evidence that it's the threat to civilization that climate change is.
I'd certainly have felt more guilty throwing away a single use pottery cup than one made of paper. It's frustrating how counter intuitive a lot of environmental issues are.
This is sort of how it seems to me sometimes: https://www.theonion.com/geologists-we-may-be-slowly-running...
That isn't as straightforward as it seems, they are returning what is a contaminated waste product. That needs to be kept very separate from the clean food-grade food & packaging deliveries, you can't just chuck a bag of waste in the delivery vehicles.
Also not a chemist, but this is reminiscent of "bamboo" fabric that is just Rayon made from bamboo cellulose instead of wood pulp cellulose.
As such, it can be a bit more environmentally friendly to produce, and amenable to production in a closed-loop facility, but isn't any more recyclable or biodegradable:
Eg. From 'Abundance of microplastics in the world's deep seas'[0]:
"Rayon -- a humanmade non-plastic polymer used in personal hygiene products and clothing -- contributed to 56.9% of the total fibres seen, with polyester, polyamides, acetate and acrylic among the others recorded."
Which isn't at all the same thing as fabrics made from actual bamboo fibers (often called 'bamboo linen').
The whole 'greenwashing' thing is super annoying to me, because even when regulating agencies are doing their job properly, so much wiggle-room is left for what marketers are allowed to imply with entirely true statements.
eg. The label lists the fiber content as 'bamboo rayon', and the marketing says "made from environmentally friendly and biodegradable bamboo!", Which glosses over that the process used to turn the bamboo INTO rayon may not have been environmentally friendly, or that while rayon is biodegradable, sort of, if it's in a landfill it's going to stick around a long time.
And then I try to imagine consumer labelling requirements for all materials, sources, methods, and lifecycles, or summarizing these into a simple environmental score, and despair.
[0] https://www.sciencedaily.com/releases/2014/12/141216212253.h...
I know nothing about it other than the company's own claims, but if their claims are true then it seems interesting.
Naturally biodegradable waste is not landfill material. A well-informed reporter not realising that shows how much work there still is to do.
The EU single use plastic ban [0] is coming in July 20201. Is there any US equivalent yet?
[0] https://www.europarl.europa.eu/news/en/press-room/20190321IP...
These cups should not go in this waste stream, the only end of life is commercial composting as I don't believe they are suitable for home composting.
https://www.ciwm.co.uk/ciwm/knowledge/landfill-directive.asp...
Their other bags, the light green ones, are only industrial compostable. They will stay as a plastic bag unless they go down the correct waste stream.
People leaving their dog poo bags has been a problem for years, in the UK they are know as Dog Poo Trees and are disgusting.
[1] https://www.letsrecycle.com/news/latest-news/wrap-caught-up-...
Dog poop is nominally compostable but if most people were composting their pet's waste the concentration would be way too high.
I pick up my dog's shit with BPI approved baggies because I want the plastic to break down, but mass pet waste needs to go into a real landfill with liners and vents and stuff.
Err, no. A disposable cup that leaks after 2 hours is a horrible product. Disposable cups are at their most useful in the car, and it’s easy for a bit of coffee to be left in a cup for more than a couple of hours.
Although paper cups are already common anyway.
> In 1981, Max Hamburgers opened Northern Europe's first drive-in in Piteå.
https://en.wikipedia.org/wiki/Drive-through
American infrastructure is built around cars, more so than many (/most?) other countries. Towns/cities in Europe are generally built to be walkable.
How can you make something that is degradable in an environmental friendly way, but also last forever? Something has to give.
And this is what is largely holding us back. "Fear of loss" is a very big deal whenever you talk about large-scale modifications to a system with which people have grown very familiar.
People can always find a reason why a particular change "simply cannot work" or "is more trouble than it is worth" or "the benefits are not outweighed by the downsides" or "my use does is not compatible" and so on and so forth.
The spectrum is massive. From paper straws to "if you are able and if you live in a place where it is possible, look for ways to not drive so often," lots of people will be in a big hurry to tell you why that flatly cannot be done.
As someone who does transit advocacy in a dense city with good transit, it is very frustrating.
While going a bit off topic, the issue I have seen with advocacy groups is that they focus on solving for the median case (eg. 80% of trips are less than 5km) whereas people usually take decisions that work for them in the edge cases (what if i need to take my ageing dad to the hospital on a rainy night, what if i have to take my kid to a far away school for a competition).
To drive real habit change, you have to have good solutions for the edge case - otherwise people will just default to re-using their edge case solution for their median use cases (sunk cost).
In the city I live in for example, even 6-7 years ago, it was essentially impossible to find a cab in the rain. I've personally missed a flight due to a sudden downpour.
With reliable and massive inventory of ride sharing NOW available where i live, I am comfortable living without a car. In my hometown where my parents live (a smaller city which also has a transit system but poor cab service), I still would not do that.
The "default" takeaway option could be the short-lasting paper cup.
For car, office or just comfort, you could have a squashy, silicone (stands high temp) outer that would usually only need to be cleaned if the inner cup fails.
A silicone shell with disposable inner would work well for me, at least. The shell would rarely need to be cleaned and can be easily pocketed.
Of course a drive-through would not be selling them.
PLA is known to get soft at near-boiling temps. Cups do start leaking and generally slump into a puddle. But this is purely an effect of the heat, it can handle the water just fine if it's cold.
This is unmodified PLA so I wonder if this isn't the same with the 'modified' stuff, or if the added fibres get soft when they get wet like paper.
Although it appears that replacing the plastic with wax might make it more recyclable/compostable.
[1] https://www.alibaba.com/product-detail/Disposable-bagasse-bi...
Probably good for making IKEA-type furniture even more cheaply.
[1] http://article.sapub.org/pdf/10.5923.j.ijme.20120204.04.pdf
Plus the cups look and feel really nice.
There you go. The dagger for non-biodegradable plastics come not just from invention, but from invention and value. ~7% increase in price is enough to disrupt.
(edit: removed the part in which I stated that burning bagasse is clean energy as I want the discussion to be focused on my first point)
This has changed, because it's now prevalent enough that I'd consider it "not unusual" to have my own cup. Also plenty of places now offer small discounts. I'm not doing it for the discounts, but that of course adds to the normalization. (Also: Covid makes things more complicated and I've been wary of using my reusable cup once again, though I also massively reduced my coffee-not-at-home-consumption, and after all that'll be over at some point.)
Coffee shops here in Ireland stopped accepting reusable cups during 2020.
I think it’s fairly unreasonable to expect people to lug around everything they might need for the day every day.
Soldiers and campers have had mess kits where they cooked and ate their food from a compact portable system for at least 100 years.
If anything, modern be silicone has increased the portability and utility of mess kits dramatically in the last 2 decades
I can’t help but feel like the tech industry is guilty of perpetuating a mindset of just throwing things away and getting a new thing without understanding the consequences.
But I always remember reading an article about Indian food-carts serving tea in the morning[1][2]. They make really thin clay cups to serve it in. When you're done you smash the cup on the road when you're done.
[0] https://twitter.com/omgfacts/status/885198079401631745?lang=... [1] https://vedicmix.com/drink-your-chai-and-break-your-cup/ [2] https://www.aljazeera.com/gallery/2016/10/26/kolkatas-age-ol...
Why would you ever want to encourage people to litter. We need to encourage people to be responsible and dispose of their waste correctly.
Papers cups basically all have a wax coating on the inside so they don't absorb your coffee. Otherwise they'd obviously get soaked pretty much immediately. And wax is biodegradable.
Has anything prevented a waxed bagasse cup from being made before? Does the bagasse+bamboo combo still require wax, or is the advantage that it doesn't?
And if the bagasse is already being fully utilized as fuel, is this really going to be an environmental benefit? What will the sugar processing plants use as fuel instead? If it's oil (or coal), would this wind up being worse for the environment overall?
Technically this is interesting... it's just very unclear to me whether it's a good idea.
It will turn into a new cotton, or biofuel corn.
Environmentalist laws often have counterintuitive consequences.
Very often, new "technical" plants outprice food crops.
I use a mug because the 50c off pays off within a month and the mug keeps the coffee warm longer than the paper cup and no, the barista pours my coffee directly into the mug
Also, some places do brew or mix in a paper cup first, some will brew directly into your cup.
There are also quite a few collection services[3][4]. One of the challenges is separating the waste ready for recycling so having collection points in cafes, offices, and railway stations[5] is a really good start.
There are also some new cups with reduce the amount of plastic in a cup so that it's below the 5% contamination level fr general paper recycling. Personally I think this is not a solution as it's just gaming the system buy encouraging contamination of the waste stream.
[1] https://www.dssmith.com/recycling/insights/case-studies/case...
[2] https://www.recyclingtoday.com/article/james-cropper-paper-m...
[3] https://thefirstmile.co.uk/service/coffee-cup-recycling
[4] https://www.veolia.co.uk/services/coffee-cup-recycling
[5] https://www.networkrail.co.uk/news/network-rail-introduces-c...
https://metro.co.uk/2015/02/25/kfc-unveils-the-uks-first-edi...
Sure. I assume you tried to go cold turkey on coffee, and didn't like it. I'd suggest the gradual method, which might work better for you.
Over the span of a week, normalize your coffee intake. Have just two cups of coffee a day at a regular time with known quantity of coffee.
Next week, reduce the amount of coffee in one cup by 1/2. So, if you grind 30g of coffee, grind 15g.
The week after that, reduce the amount of coffee in the other cup to the same amount.
The week after that, reduce the amount of coffee in one cup by 1/4 (or, eliminate entirely). One week after that, do the same to the other cup. Before you know it, going cold turkey gives you no symptoms.
You can see how this goes on. Adjust the time period and/or the coffee reduction to whatever works for you. For me, a week and coffee reduction by 1/4th (of the original amount) worked just fine for me.
Everyone made it. My "trick" was to treat the withdrawal symptoms like I was coming off of heroine, visualize a clear improvement after the slump. The rest was just to find caffeine free replacements. Coke Zero Caffeine-Free was a blessing.
Now, that’s just one doctor’s opinion, but when I did some follow up research, it did seem like the overall effects were probably very modestly negative at worst and might easily be positive.
In terms of quitting caffeine in general (to which I was previously essentially addicted), it seemed to have a trough at day 4-10 and then was better by around day 20 and didn’t miss it much by around the 6th week. I’m back on it, but quitting it cold turkey took a lot longer than I’d have expected.
I always go back because it helps with DOMS.
The bagasse is already used as free fuel to boil cane juice.
Only places where electricity, or natural gas is really, really cheap have surplus bagasse.
Why can't we just walk up to a bar, order a coffee, have it served in a ceramic cup? I guess the majority of coffee shops not actually having a bar is a bit of a hindrance!