SilverLining

Dedicated to preserving the beauty of our planet in the name of Coffee.

[SilverLining @cellulosers]

SilverLining: Reducing waste in the coffee roasting industry by making microcrystalline cellulose from coffee silverskin #CHME4703Poster @NU_ChemE

To see an overview of our project: https://t.co/0a382bHtwO
To view our poster up close and personal: https://t.co/9DssWHlwRw

[SilverLining @cellulosers]

@Celluol_21 @NU_ChemE (2/2) These materials will be washed off the CSS and sent to waste water treatment which should only need to consist of a pH adjustment. We would work with local authorities to ensure that the biological load of the lignin is at a safe level for disposal with no further treatment

[SilverLining @cellulosers]

SilverLining: Reducing waste in the coffee roasting industry by making microcrystalline cellulose from coffee silverskin #CHME4703Poster @NU_ChemE

To see an overview of our project: https://t.co/0a382bHtwO
To view our poster up close and personal: https://t.co/9DssWHlwRw

[SilverLining @cellulosers]

@Celluol_21 @NU_ChemE (1/2) Hi celluol, thanks! To answer your question: our pretreatment is a base delignifcation using NaOH at relatively low concentrations. The only other by-product is lignin, which is a highly abundant biopolymer and regarded as safe.

[SilverLining @cellulosers]

@han_solo_4703 @NU_ChemE (2/2) The base is added, then pumped from the system into a storage container for recycle, and so on through the steps listed in the box in the top left, in a semi-batch set up.

[SilverLining @cellulosers]

@han_solo_4703 @NU_ChemE (1/2) Thank you! This is something that is elaborated on more in our report, but our process includes multiple separate steps in one reactor, so the hydroxide and peroxide never actually mix!

[SilverLining @cellulosers]

@WillitsLab @NU_ChemE (2/2) We ran samples from the final two experiments on FTIR alongside the MCC control to confirm that the crystalline material is in fact cellulose. When the spectra from our products are overlaid with the control, it is clear that there is alignment.

[SilverLining @cellulosers]

@WillitsLab @NU_ChemE (1/2) The first picture represents our way of confirming crystalline material is produced since MCC naturally polarizes light. Left to right shows an MCC control purchased from Sigma, two intermediate processes, and then our final optimized process.

[SilverLining @cellulosers]

@MilkyWayChemE @NU_ChemE Hi, interesting project! I was wondering if you could explain why you chose to do your processing in two parallel lines. It seems that this would increase equipment and utility costs as compared to having one larger process. Thanks!

[SilverLining @cellulosers]

@han_solo_4703 @NU_ChemE Hi HAN Solo! This is a great sustainably-minded project, and we are excited to see the results of your economic analysis! In the meantime, we were curious about the timing of your process-approximately how long does it take to complete, and how does that impact your productivity?

[SilverLining @cellulosers]

@CncGane @NU_ChemE Hi GaneCNC! We love your idea of recycling sulfuric acid to reduce environmental implications of your cellulosic isolation process. We were wondering if you had any primary economic goals, since you do make significantly more product than the leading competitor?

[SilverLining @cellulosers]

@donepegel @NU_ChemE Great looking poster! Can you elaborate upon what steps your process equipment represents in terms of producing your gels? And what your next steps might be for further optimization?

[SilverLining @cellulosers]

[tapping mic] is this thing on

[SilverLining @cellulosers]

coffee fact: it is lightning juice

[SilverLining @cellulosers]

i'm just saying, our process wouldn't get stuck in a canal

[SilverLining @cellulosers]

hi and welcome to our podcast, today we’ll talk about coffee- is it good? what are its secrets? where can i find some? under a rock? perhaps.

[SilverLining @cellulosers]

beans