An enzyme variant created by engineers and scientists at The University of Texas at Austin can break down environment-throttling plastics that typically take centuries to degrade in just a matter of hours to days.
This discovery, published today in Nature, could help solve one of the world’s most pressing environmental problems: what to do with the billions of tons of plastic waste piling up in landfills and polluting our natural lands and water. The enzyme has the potential to supercharge recycling on a large scale that would allow major industries to reduce their environmental impact by recovering and reusing plastics at the molecular level.
“The possibilities are endless across industries to leverage this leading-edge recycling process,” said Hal Alper, professor in the McKetta Department of Chemical Engineering at UT Austin. “Beyond the obvious waste management industry, this also provides corporations from every sector the opportunity to take a lead in recycling their products. Through these more sustainable enzyme approaches, we can begin to envision a true circular plastics economy.”
The project focuses on polyethylene terephthalate (PET), a significant polymer found in most consumer packaging, including cookie containers, soda bottles, fruit and salad packaging, and certain fibers and textiles. It makes up 12% of all global waste.
The enzyme was able to complete a “circular process” of breaking down the plastic into smaller parts (depolymerization) and then chemically putting it back together (repolymerization). In some cases, these plastics can be fully broken down to monomers in as little as 24 hours.
Researchers at the Cockrell School of Engineering and College of Natural Sciences used a machine learning model to generate novel mutations to a natural enzyme called PETase that allows bacteria to degrade PET plastics. The model predicts which mutations in these enzymes would accomplish the goal of quickly depolymerizing post-consumer waste plastic at low temperatures.
Through this process, which included studying 51 different post-consumer plastic containers, five different polyester fibers and fabrics and water bottles all made from PET, the researchers proved the effectiveness of the enzyme, which they are calling FAST-PETase (functional, active, stable and tolerant PETase).
“This work really demonstrates the power of bringing together different disciplines, from synthetic biology to chemical engineering to artificial intelligence,” said Andrew Ellington, professor in the Center for Systems and Synthetic Biology whose team led the development of the machine learning model.
Recycling is the most obvious way to cut down on plastic waste. But globally, less than 10% of all plastic has been recycled. The most common method for disposing of plastic, besides throwing it in a landfill, is to burn it, which is costly, energy intensive and spews noxious gas into the air. Other alternative industrial processes include very energy-intensive processes of glycolysis, pyrolysis, and/or methanolysis.
Biological solutions take much less energy. Research on enzymes for plastic recycling has advanced during the past 15 years. However, until now, no one had been able to figure out how to make enzymes that could operate efficiently at low temperatures to make them both portable and affordable at large industrial scale. FAST-PETase can perform the process at less than 50 degrees Celsius.
Up next, the team plans to work on scaling up enzyme production to prepare for industrial and environmental application. The researchers have filed a patent application for the technology and are eying several different uses. Cleaning up landfills and greening high waste-producing industries are the most obvious. But another key potential use is environmental remediation. The team is looking at a number of ways to get the enzymes out into the field to clean up polluted sites.
“When considering environmental cleanup applications, you need an enzyme that can work in the environment at ambient temperature. This requirement is where our tech has a huge advantage in the future,” Alper said.
Alper, Ellington, associate professor of chemical engineering Nathaniel Lynd and Hongyuan Lu, a postdoctoral researcher in Alper’s lab, led the research. Danny Diaz, a member of Ellington’s lab, created the machine learning model. Other team members include from chemical engineering: Natalie Czarnecki, Congzhi Zhu and Wantae Kim; and from molecular biosciences: Daniel Acosta, Brad Alexander, Hannah O. Cole, Yan Jessie Zhang and Raghav Shroff. The work was funded by ExxonMobil’s research and engineering division as part of an ongoing research agreement with UT Austin.
2,414 comments
sát nhân
sex nhật hiếp dâm trẻ em ấu dâm buôn bán vũ khí ma túy bán súng sextoy chơi đĩ sex bạo lực sex học đường tội phạm tình dục chơi les đĩ đực người mẫu bán dâm
District of Columbia State Athletic Association
Excellent article. I am dealing with many of these issues as well..
thuốc kích dục
sex nhật hiếp dâm trẻ em ấu dâm buôn bán vũ khí ma túy bán súng sextoy chơi đĩ sex bạo lực sex học đường tội phạm tình dục chơi les đĩ đực người mẫu bán dâm
そこで 言い換え
In August 2017, Radix Trading opened an office in Amsterdam to expand its operations into Europe.
cloudhosting
Good post. I learn something new and challenging on blogs I stumbleupon every day. It’s always exciting to read articles from other authors and use a little something from their sites.
Training Lototo
Good post. I learn something totally new and challenging on sites I stumbleupon on a daily basis. It will always be useful to read content from other writers and use a little something from other websites.
外幣投資有哪幾種
The guide of Ephesians has it’s foundation in the primary eight chapters of Romans.
i9betq.net
This is a topic which is close to my heart… Best wishes! Where are your contact details though?
tk88t.org
Way cool! Some very valid points! I appreciate you penning this article and also the rest of the website is very good.
sex học đường
sex nhật hiếp dâm trẻ em ấu dâm buôn bán vũ khí ma túy bán súng sextoy chơi đĩ sex bạo lực sex học đường tội phạm tình dục chơi les đĩ đực người mẫu bán dâm
jun88.systems
I enjoy reading an article that will make men and women think. Also, thank you for allowing me to comment.
DCSAA website
Hello there! I just wish to offer you a big thumbs up for the great info you have here on this post. I will be returning to your blog for more soon.
software f
I enjoy reading through an article that can make people think. Also, thank you for permitting me to comment.
fitspresso amazon
I couldn’t resist commenting. Perfectly written.
bj 88
Spot on with this write-up, I honestly believe this amazing site needs much more attention. I’ll probably be returning to see more, thanks for the information!
うける使い方
Karjakin famous the media appeared more shocked about Carlsen’s opening choice than he himself was, and indicated that maybe transfer 27 was Carlsen’s final chance to make one thing of the game.
qh88
bookmarked!!, I love your blog.
33WIN
I couldn’t resist commenting. Exceptionally well written.
Post study work visa
An impressive share! I’ve just forwarded this onto a colleague who has been conducting a little homework on this. And he in fact ordered me breakfast due to the fact that I found it for him… lol. So let me reword this…. Thank YOU for the meal!! But yeah, thanx for spending some time to talk about this topic here on your blog.
mold removal
This website was… how do I say it? Relevant!! Finally I have found something that helped me. Thank you!
Sponsiobet is the best source for casino information online
Greetings! Very useful advice in this particular post! It is the little changes that make the most significant changes. Thanks a lot for sharing!
Aanbouw
The very next time I read a blog, I hope that it doesn’t disappoint me just as much as this particular one. After all, Yes, it was my choice to read through, nonetheless I truly thought you would probably have something helpful to say. All I hear is a bunch of complaining about something that you could fix if you weren’t too busy looking for attention.
provadent order
Pretty! This was an incredibly wonderful article. Thank you for providing this info.
rheumatologist houston
Hello! I simply would like to offer you a big thumbs up for the great info you’ve got right here on this post. I am coming back to your blog for more soon.
ローション ガーゼ 感想
Next, ensure that you have an efficient cash administration system so that you already know when to cover your losses and how you can spread the earnings.
commercial real estate brokers
Right here is the perfect webpage for everyone who would like to find out about this topic. You understand a whole lot its almost tough to argue with you (not that I really will need to…HaHa). You certainly put a new spin on a topic that has been written about for years. Great stuff, just great.
fiets kopen
Everything is very open with a precise description of the challenges. It was really informative. Your website is extremely helpful. Many thanks for sharing.
juegos online para pc
Your style is really unique compared to other people I’ve read stuff from. Many thanks for posting when you have the opportunity, Guess I will just book mark this web site.
△ の書き順
In August 2011, the National Futures Association (NFA) issued a $2-million fine to FXCM for slippage malpractice.
株価指標とは
Fatalities continue to be reported to the CDC.
まるにゃん
Traders make the most of market timing to foretell at what time the markets might swap its path.
保険 比較 サイト ランキング
One in all my teachers who likes me referred to as it being “justice-oriented.” I like to think about myself as an activist.
pateri.shop
You have made some good points there. I checked on the web for more info about the issue and found most individuals will go along with your views on this web site.
ギャバ チョコ 睡眠
Pawnshops also play an important role in many communities by providing people with an easy, fast way to borrow small amounts of money.
リスボン国
Universal Orlando did open two haunted houses within the fall of 2020, the “Bride of Frankenstein Lives” house and the “Revenge of the Tooth Fairy” house, in an try to lure back park friends but below full COVID restrictions with only three guests per room and distanced accordingly.
chefsausage.com
Great post! We will be linking to this great post on our site. Keep up the great writing.
つらみ 若者言葉
Depreciating Assets- One thing to consider with personal finance and net worth goals is depreciating assets.
Hi88
This is a great tip particularly to those new to the blogosphere. Brief but very precise information… Thank you for sharing this one. A must read article!
lice mamas
Oh my goodness! Amazing article dude! Many thanks, However I am going through problems with your RSS. I don’t know why I can’t subscribe to it. Is there anybody getting similar RSS issues? Anyone that knows the solution will you kindly respond? Thanx.
thesolderdr
Your style is very unique compared to other folks I have read stuff from. Thank you for posting when you have the opportunity, Guess I’ll just book mark this blog.
Spiritual Accessories
Howdy! This article couldn’t be written any better! Reading through this post reminds me of my previous roommate! He continually kept preaching about this. I most certainly will send this post to him. Pretty sure he’s going to have a great read. I appreciate you for sharing!
Interieurbeplanting
There is definately a lot to learn about this topic. I really like all the points you’ve made.
family therapy singapore
I quite like reading through a post that can make men and women think. Also, many thanks for allowing me to comment.
salt trick recipe
You’re so cool! I don’t suppose I’ve truly read something like that before. So great to discover somebody with some unique thoughts on this issue. Seriously.. thank you for starting this up. This web site is something that is required on the web, someone with some originality.
driving schools mallow
If you’re ever driving and feel frustrated, sad, or angry, the
best thing is to pull over and try to calm down.
driving lessons tallaght
Exchange your foreign licence or change your personal details.
driving lessons near me
We’ve teamed up with a number of trusted partners to offer some incredible
deals to RED customers only.
driving lessons near me
In many places, they should hold a valid Instructor Registration Certificate and have completed the necessary
training and examinations to teach learners.
driving schools tallaght
By choosing us, you’ll join thousands of islanders who successfully learned from our expert instructors.
driving lessons near me
The learning should not be restricted to the students,
the parents can pick up a few tips and tricks.