Placeholder Image

字幕列表 影片播放

  • The ability to use a mixture of textile waste resources and convert them into building application products.

  • Shows that there are endless possibilities.

  • So here's an example of tile that we produce that has got a combination of a couple of

  • different types of waste materials.

  • And in this instance we've got glass coupled with textiles and that just adds so much more color.

  • We can create and reform these new mixtures that we've created into hybrid

  • panels for the built environment.

  • It's a whole new opportunity and a whole new world that looks at transformation of textiles

  • in a completely different dimension.

  • Considered the alchemist of waste, Veena Sahajwalla has been exploring its hidden potential on

  • a molecular level.

  • Where I grew up in Mumbai, it's the industrial heartland of India. People are very creative

  • and they like to be able to take advantage of every bit of material and product.

  • We don't appreciate enough value that is embedded in our waste materials.

  • That's really one of the reasons why I'm so passionate about it.

  • I think we can do so much more and create so much more value out of waste.

  • As an engineer and materials scientist, she’s built a career rerouting the world’s most

  • problematic waste streams.

  • She’s invented green steel, a technique that uses shredded rubber tires to make the

  • iron needed for steel.

  • She’s also spun up an electronic waste microfactory to tackle that mountain of waste, using modular

  • systems to capture micromaterials from discarded cell phones.

  • And now, she’s turning her attention to textiles.

  • Because it’s gotten way too easy to buy new clothes these days.

  • There’s a constant flood of new items at your fingertips and it’s all part of a speed

  • up that’s happening in the fashion industry.

  • The tonnage of waste, the numbers are simply mind boggling. We're talking about many,

  • many millions of tons of waste materials.

  • Some of the world’s largest clothing manufacturers produce as many as 900 million items per year.

  • And so were buying more clothes at lower quality, using them for shorter periods of

  • time, and then throwing them away.

  • And that disposal loop is becoming a huge problem.

  • If youre in the United States, roughly ten times more clothes are going into landfills today

  • than in the 1960s.

  • But Veena thinks there’s potential here, even with those discarded 7 dollar shirts.

  • A lot of the materials that go into manufacturing our garments are indeed synthetic materials.

  • So just because they don't continue their life as a garment because they've fallen

  • apart doesn't mean that the fundamental fibers that are there in these garments are no longer useful.

  • What is really fascinating is when you actually zoom in

  • and look at it at a deeper level

  • you can indeed look at it, as a collection of molecules.

  • That in fact presents so many different opportunities.

  • With that kind of thinking, Veena and her team invented a method that captures the molecular

  • properties from discarded items and turns them into building panels.

  • When our garments come to us, there's more than just the textile in our clothes.

  • We have, for example, zippers and buttons.

  • The start of the journey for us has been about removing some of these other products so that we can focus

  • in and look at textile itself. Then literally zoom down and break it down into those microfibrils.

  • Not all waste textiles deliver high level performance.

  • And this is why we've got to be very selective in understanding what kind of properties we

  • want. You know what are the different types of chemical reactions that would occur if these different

  • mixtures were to react with each other.

  • Once theyve got the textiles sorted, theyll incorporate recycled glass and wood into the

  • mix to create an optimum blend.

  • That then gives us the ability to use them as structural products.

  • And that strength can in fact be derived from waste wood and can be derived from waste glass.

  • So in fact, suddenly a mixture is not a bad thing for recycling and reforming.

  • It could well be a really, really good thing.

  • That then becomes, in fact, the starting point for the process,

  • which requires us to apply heat and pressure.

  • We have to have our fleece materials located inside the mold.

  • And that hot press really allows us to apply the heat and pressure that's required to ultimately

  • create the finished product.

  • The product then cools down, it forms into that nice integrated structure that's been

  • bonded together and then it's ready to be extracted out of the press and ready to be

  • trialed and tested.

  • These building materials are piloted in Veena’s microfactory, and the hope is that theyll

  • be used as tiles and interior finishes in your home one day.

  • What we are doing of course, is going beyond the traditional three r's as people know is

  • reduce, reuse, recycle.

  • We can actually go beyond traditional recycling and think about a fourth r, that we like to

  • call reform, which means that we can really reform the structure, we can reform that chemistry.

  • No matter how many technologies we develop.

  • I think we have to also take some responsibility into our own hands.

  • we need to ask the question, do we really need so many different types of clothing items?

  • Do we need to really go out there and purchase the next best thing?

  • It's not good enough for us to think, well, just because we've thrown away our old clothes

  • that we've done our bit.

  • That's really why it's so important for us to look at our waste resources and the ability

  • to transform into different types of products. Looking at micro recycling ultimately has

  • to be governed by the principles that we are developing economies of purpose

  • bringing our materials back to life over and over again actually then

  • further promotes and develops circular economy.

  • And that notion of a circular economy is a major part of Veena’s mission.

  • Because it’s not just about making new building materials or extracting materials from cell

  • phones, it’s about rethinking our global supply chain altogether.

  • Having small and modular systems that can be fine tuned in terms of the operations is

  • what a microfactory is all about.

  • The ability to actually take locally available waste materials like textiles and waste glass

  • for instance, gives us a whole range of possibilities to create those local industries where you

  • can actually apply your creativity as well as of course engineering strengths.

  • What that then does is allow you to create a win-win outcome, both from an environmental

  • point of view as well as delivering economic benefits into the local region.

  • What we are really talking about here is creating those supply chains that make those resources

  • so valuable and so useful that really no one wants to even think about disposal.

  • This whole journey of circular economy will allow us to think very differently about our

  • waste resources and never think of them as an environmental burden.

  • For more science documentaries, check out this one right here

  • Don't forget to subscribe and keep coming back to Seeker for more videos.

The ability to use a mixture of textile waste resources and convert them into building application products.

字幕與單字

單字即點即查 點擊單字可以查詢單字解釋

B1 中級

這種新的回收方法能減少時尚垃圾嗎? (Can This New Method of Recycling Reduce Fashion Waste?)

  • 11 1
    林宜悉 發佈於 2021 年 01 月 14 日
影片單字