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.
2,347 comments
https://invest1now.com
bookmarked!!, I really like your blog!
spring clean maid service
Sharing this with friends!
Cost of new AC unit installation
Many A/C installations take one or two days,
though larger systems can take as long as three to seven days.
Sharyn
We are the leaders of water cooled down a/c systems in the country.
https://biitland.com
Great article. I will be facing a few of these issues as well..
Sheryl
The rates in this guide are an approximate price quote of how much you might invest.
Cost of new AC unit installation
Options include single split system air devices, linked units for an entire residence, or ducted systems.
Software de nomina en la nube
I love reading an article that will make men and women think. Also, many thanks for allowing for me to comment.
Brick Pallet
Good info. Lucky me I discovered your blog by accident (stumbleupon). I’ve bookmarked it for later.
Więcej informacji
I could not refrain from commenting. Very well written!
Cyndy Hayne
This is a great take on the matter, and I’ve seen a similar opinion shared on https://ho88.news/. It’s clear that this is a well-discussed topic with valid arguments.
Once Human
Your site is amazing. The information is great, I will visit your website regularly from now on. I wish you continued success
maid service for small homes
Thanks for the value.
Cost of new AC unit installation
A limited knit family run mid sized business running throughout
the UK’s funding.
Cost of new AC unit installation
The installation of a cooling device is, for lots of people, a necessity.
uşak taksi
Your site is amazing, the articles are great, I will always come to this site and continue to read because you have very nice articles, thank you
porn movie
Good post. I learn something new and challenging on websites I stumbleupon everyday. It’s always interesting to read articles from other writers and practice a little something from their web sites.
qq8876.net
I really like it when people come together and share thoughts. Great blog, keep it up.
eco friendly house cleaning
You make this so clear.
ニュージーランド移住
This is the perfect web site for anybody who would like to understand this topic. You know a whole lot its almost tough to argue with you (not that I really will need to…HaHa). You certainly put a fresh spin on a subject that’s been written about for a long time. Excellent stuff, just great.
taksi uşak
Your site is amazing, the articles are great, I will always come to this site and continue to read because you have very nice articles, thank you
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
https://www.thailandvapers.com/proxy.php?link=https://glenn-cahill-3.blogbright.net/just-how-to-prepare-your-ac-for-summer-season-a-checklist
Speak with us– we have air conditioning engineers based in London and Bromley.
cost of new ac unit Installation
When you employ an air-conditioning installation solution, you
can anticipate to have a professional do the job.
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
uşak taksi
Your site is very nice, the articles are great, I wish you continued success, I love your site very much, I will visit it constantly
maid service for every schedule
Such great info.
commercial real estate agents
Hello, I believe your website could possibly be having web browser compatibility issues. Whenever I take a look at your website in Safari, it looks fine however when opening in I.E., it has some overlapping issues. I just wanted to provide you with a quick heads up! Apart from that, excellent website!
Cost of new AC unit installation
If you are acquiring a freestanding air conditioning system,
you can mount it on your own.
Cost of new AC unit installation
If you are looking for home a/c in Coventry,
we have a vast array of solutions available.
おすすめのオンカジBEST3
Hi, I do think this is a great blog. I stumbledupon it 😉 I may revisit yet again since i have book marked it. Money and freedom is the best way to change, may you be rich and continue to guide others.
オンカジで借金地獄
I was able to find good info from your blog articles.
Http://Jacobsenorchard.Com/__Media__/Js/Netsoltrademark.Php?D=List.Ly/Lindsaymunkholm25Fgaftf
You will certainly need to run an air duct (around 125mm
size) out a window to expel the warmth.
website
I used to be able to find good info from your blog articles.
BitStarz Casino Bonus Code
Way cool! Some extremely valid points! I appreciate you penning this post and the rest of the site is also very good.
http://cej.pinoydeals.com
The longer your cooling system runs, the a lot more
power it takes in, leading to greater power costs.
trang cá độ bóng đá uy tín Bong88 Viva88
I was able to find good info from your content.
늑대닷컴
A fascinating discussion is definitely worth comment. I believe that you need to publish more about this issue, it may not be a taboo matter but generally folks don’t discuss such subjects. To the next! Many thanks.
mitolyn
An impressive share! I’ve just forwarded this onto a friend who has been conducting a little homework on this. And he in fact ordered me breakfast simply because I found it for him… lol. So let me reword this…. Thanks for the meal!! But yeah, thanx for spending time to discuss this matter here on your web site.
Cost of new AC unit installation
Use our domestic cost calculator to find the best kind of domestic air
conditioning system for your home.
늑대닷컴
Pretty! This has been a really wonderful post. Thank you for supplying these details.