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ABSTRACT Self-prepared beaded activated carbons (SBAC) were derived from carbonized phenolic formaldehyde (PF) resins through an optimal activation procedure (900°C for 4 h) using CO2 and compared with a commercial BAC (termed KBAC) over physicochemical properties, adsorption performance against methyl ethyl ketone (MEK) and toluene (TOL), and their regenerability. Langmuir, Freundlich, and Dubinin‒Radushkevich (D‒R) isotherm models showed good fitting results. The isosteric heat of adsorption was calculated using the Clausius-Clapeyron equation; the parameters obtained from the D‒R isotherm indicate that the physisorption predominates the adsorption process. Microwave heating was applied to regenerate the saturated adsorbents to examine the effect of irradiation power and heating time on the desorption behavior. Within 12 min of microwave irradiation, excellent desorption efficiencies were shown, reaching 110 ± 14.4%, 104 ± 2.6%, 90.2 ± 2.3%, and 85.5 ± 5.7% for MEK-SBAC, MEK-KBAC, TOL-SBAC, and TOL-KBAC samples, respectively. Kinetic models were further employed to illustrate the desorption behavior, showing that intraparticle diffusion in SBAC and KBAC was the rate-limiting step during microwave heating. The core kinetic parameters could provide insights for lab-scale or practical engineering scale design. In conclusion, this study demonstrates the excellent adsorption performance of SBAC and the feasibility of microwave regeneration of BACs.
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This printable plant research worksheet template offers an engaging outdoor science activity tailored for homeschool kids to conduct plant studies, enriching their science research experiences. Get this worksheet and many others with My Research Workbook available in my shop. Check it out! https://www.etsy.com/listing/1645195234/kid-research-workbook-science-worksheet?click_key=9a00cd688ad380c39e59256e95be2d83be01bfad%3A1645195234&click_sum=91cb5efa&ref=shop_home_active_18&frs=1 Purchase once and use it over and over again! On this worksheet, children can: *Write the plant's name and scientific name *How tall does the plant grow *Draw a picture of the plant they are researching *Where does the plant grow You will receive 1 PDF file with 1 page. Make sure to print in LANDSCAPE format. HOW TO RECEIVE THIS DIGITAL DOWNLOAD: After your purchase has been confirmed, your PDF file will be available for download on your Etsy account. Click on the tab that reads Your Account and click on Purchases and Reviews and your file can be found there. Click, download, and print! PRINTING & SIZING File can be printed on standard letter size paper. Colors and page margins may vary from printer to printer. COPYRIGHT This item is for personal use only. It can not be duplicated, sold, or used in any other way, shape, or form. DISCLAIMER This is a digital download. No physical item will be sent to you. Thank you for your support! If you have any questions or issues with your download, please send me a message! Loving this listing? Check out this similar listing! https://www.etsy.com/listing/1319341741/animal-research-worksheet-printable-pdf?click_key=5de3c350b9ad33ea5927b6840bd38506b99c7ee8%3A1319341741&click_sum=f8d8d8fd&ref=shop_home_active_1
Europeans in the biggest cities have the smallest carbon footprints. But new research finds that compact urban living can come with health trade-offs.
It’s the reason why many of us bought an air fryer in the first place, and after painstaking research and testing, we think we’ve found the ultimate air fryer chip. Enjoy! Be sure to read our top tips below on creating the ultimate air fryer chips – including soaking, tossing and shaking for the best results. Pair these with our air fryer chicken wings or air fryer mushroom bakes for a complete meal.
Researchers have developed paint that is not only the whitest white, it can also help cool down buildings.
Having dealt with a less than satisfactory plein air easel for years, I spent hours-nay, years- researching field easels before buying ...
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Day 2 from The Greetery is filled with lots more amazing Autumn goodies. I have 3 projects today so keep scrolling and then don't forget to leave a comment on each blog today for more chances to win a gift certificate! First up is the new Grateful Greetings.... I love this stamp set! The big bold greeting is so much fun and then there are all the little extra sentiments to make all different occcasions. The sweet little flower can be stamped and die cut. I kept this one simple with the heat embossed sentiment and then the coral stenciled shadow. So quick and easy! The Honeycomb series has some new characters... These cute little spiders are perfect by themselves or using the little interactive honeycombs. I made some sweet treats for halloween. The fun part is the spiders are on the little springs to make them move. See the video over on IG! Here is one last card using the new Hey Honeycomb Full Moon... I popped up 3, 1" panels for a simple background and then added in the Honeycomb details. The shadow of the moon pops open to a cute little surprise... Click HERE to see the full release on August 29th! Here are the stops on today's hop.... The Greetery Blog Dana Dawn Kelly Laurie Melissa Wanda Leave a comment on each blog for your chance to win! The Greetery is giving away Two $50 gift certificates, comment deadline is Wednesday, 8/28 at 11:59pm EDT and winners will be announced on The Greetery Blog at 7am on Tuesday morning. __________________________________ A little info about commenting here on my blog.... My comments are moderated because I get a ton of spam. The kind of spam that tells me about cholesterol medication, among others, and just weird bot comments so I filter those out. If you leave a comment and don't see it, thats ok! I will see it and I will get it posted for you. The other issue is wether or not you need a google account. I have my comments set to "anyone" so technically you should be able to leave a comment with any type of login, but Blogger is a pain. If you can't leave a comment and are not sure if you your name is posting along with your comment, please add your name and email address to the end of your comment. This way we can see who you are if your comment gets chosen as a winner! I am sorry for the annoyance. I have no idea why it doesn't work like it should. I have googled and switched settings around and tried all the things but again... Blogger is a pain. __________________________________ FIND ME OVER ON: Instagram: Laurie Willison (@laurie_willison) YouTube: Soapbox Creations Facebook: Soapbox Creations All products in today's post are linked below and throughout the post. These are my personal affiliate links which you can shop from at no cost to you! :) Thank you for supporting Soapbox Creations!
The lightest solid in the world can carry your lip gloss.
Air is a creation by the artist Maria Frodl. Category People, Nude, Female, Photography, Digital. Canon Eos 5D Mark II. Time exposure. 3 distinctions, 14K views, 51 appreciations, 3 comments, 7 favourites, 1 group project.
The HAL Tejas is an Indian indigenous, multi-role, Light Combat Aircraft (LCA) designed by the Hindustan Aeronautics Limited (HAL).
The results of the study at two Helsinki daycare centres are still preliminary but promising, a researcher says.
