I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment

Nano-engineered cellulose prevents scaling

By Scott Jenkins |

Efforts to find more environmentally friendly anti-scalant approaches have yielded a new form of functionalized nanocellulose that can prevent the nucleation and growth of calcium carbonate, the most common component of industrial scale. Based on the biopolymer cellulose, the anti-scaling agents do not contain phosphorus, which can cause environmental damage in water runoff. To engineer the anti-scaling agents, researchers at McGill University (Montreal, Que.; www.mcgill.ca) worked with a form of nanocellulose, known as hairy nanocellulose, that had been previously discovered at McGill. This form of cellulose is so named because it results from cellulose nanofibrils (the building blocks of plant cell walls) that are cut at precise locations to produce nanoparticles with amorphous regions on either end of crystalline regions. The amorphous “hairs” can be chemically functionalized to a much greater degree than other forms of nanocellulose. Onto the strands of nanocellulose, the researchers added negatively charged dicarboxyl groups, which interact with positively charged calcium ions and interferes with the formation of CaCO3. Lead author Amir Sheikhi, now a postdoctoral researcher at the University of California at Los Angeles…
Related Content
Making solar steam and salts from brine
A low-cost “green” technology for water desalination and zero liquid discharge of industrial wastewater that has been drawing increasing attention…
Products from natural gas
Linde Engineering (Pullach, Germany; www.linde-engineering.com) has developed a process to recover helium, hydrocarbons and purified carbon dioxide from natural gas,…

Andritz

PTA production: Lowering OPEX without compromising on quality

A paper that looks at how the earlier PTA production method involving a multi-stage process with pressure and atmospheric centrifuges and a re-slurry tank can be replaced with one stand-alone device – the rotary pressure filter (RPF).

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Live chat by BoldChat