#GoldRecovery

@lfim-epfl.bsky.social

5 days ago

Stable Zirconium-Piperazine Metal–Organic Frameworks for Efficient Gold Recovery Gold’s importance in various industries, the ever-rising demand for electronics, and shrinking gold reserves all underscore the pressing need to develop effective gold recovery methods from waste. In this study, we systematically evaluate several large-pore Zirconium-carboxylate Metal–Organic Frameworks (Zr-MOFs) having slightly varied internal surface functionality (-H, -CH3, -NH2, and -NO2) in gold recovery from acidic, simulated e-waste solutions. We compare two Zr-MOFs constructed from oligophenylene ligands with four MOFs built from structurally analogous piperazine-based ligands, including two unreported frameworks. The piperazine-based frameworks offer a critical sustainability advantage: by replacing the central benzene core with piperazine, they eliminate the need for expensive Pd-catalyzed coupling chemistry required for oligophenylene synthesis. In this work, we demonstrate for the first time that Zr-piperazine MOFs exhibit stability in acidic conditions, significantly surpassing their oligophenylene-based counterparts. One developed Zr-piperazine MOF, functionalized with both amine and methyl groups, substantially outperforms all analogs, displaying the highest stability alongside a gold adsorption capacity of up to 1826 mg/g and rapid adsorption kinetics in a 40 ppm gold solution. X-ray Absorption Near-Edge Structure (XANES) studies reveal distinct gold adsorption mechanisms for primary versus tertiary amines. These findings establish piperazine-based building blocks as promising candidates for designing selective gold adsorbents for e-waste recovery applications.

📢 Our new paper is out!

We report stable zirconium–piperazine MOFs that enable efficient and selective recovery of gold, highlighting the potential of piperazine-based MOFs for precious-metal extraction.

Read the paper 👇
pubs.acs.org/doi/10.1021/...

#MOFs #GoldRecovery #PorousMaterials #E-waste

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Metaactor

@metaactor.bsky.social

2 months ago

TikTok - Make Your Day

At 3pm EDT today, I will be doing a livestream gold drop using ascorbic acid. For demonstration purposes only. Live from the Rad Lab. #gold #goldrecovery #goldrecovered #kemetforever
tiktok.com/@metaauctions

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Metaactor

@metaactor.bsky.social

2 months ago

TikTok - Make Your Day

At 3pm EDT today, I will be doing a livestream gold drop using ascorbic acid. For demonstration purposes only. Live from the Rad Lab. #gold #goldrecovery #goldrecovered #kemetforever
tiktok.com/@metaauctions

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Pure Science

@purescience.news

8 months ago

Scientists Figured Out How to Extract Gold From Old Phones And Laptops Don't throw it out.

Scientists Figured Out How to Extract Gold From Old Phones And Laptops #Science #Chemistry #EnvironmentalChemistry #GoldRecovery #E-waste #Sustainability

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Aaj News

@aajnews.bsky.social

8 months ago

ویسے تو یہ کام پہلے سے جاری ہے، لیکن یہ نیا طریقہ ناصرف محفوظ ہے بلکہ ماحول دوست بھی ہے
مزید پڑھئے: www.aaj.tv/news/30468514
#AajNews #ElectronicWaste #GoldRecovery #EwasteToGold

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Pure Science

@purescience.news

8 months ago

Motherboard motherload: a better way to recover gold from e-waste Electronic waste from discarded computers is a growing challenge. Credit: Flinders University Researchers have developed a “low-cost, sustainable, simple and safe” approach to extract gold from ore,...

Motherboard motherload: a better way to recover gold from e-waste #Science #Chemistry #EnvironmentalChemistry #EwasteRecycling #SustainablePractices #GoldRecovery

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Ascend Forex

@ascendforex.bsky.social

10 months ago

💰🔥 Yesterday was a MASTERCLASS in comebacks—from early Reds on Gold to a full profit recovery, proving no deficit is permanent with the Ascend Forex system.

💵👉🏻 www.ascendforex.com

#AscendForex
#ComebackKings
#GoldRecovery
#RiseAboveTheMarkets
#ForexResilience
#NoLossIsFinal
#ForexSignals

💵⚔️...

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Ascend Forex

@ascendforex.bsky.social

10 months ago

Ascend Forex | For Serious Traders Sharpen your Financial Success and Profit by Trading on Forex, Indices, and Gold Markets with our Winning Signals delivered right to your phone.

...
📊 How We Engineered the Turnaround:
- Strategic entries (no emotional revenge trades).
- Precision lot sizing to accelerate recovery.
- Ice-cool patience during drawdowns.

👉🏻 www.ascendforex.com

#AscendForex
#ComebackKings
#GoldRecovery
#ForexResilience
#NoLossIsFinal
#ForexSignals

💵...

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Ascend Forex

@ascendforex.bsky.social

10 months ago

Ascend Forex | For Serious Traders Sharpen your Financial Success and Profit by Trading on Forex, Indices, and Gold Markets with our Winning Signals delivered right to your phone.

...
🚀 Today’s Mantra:
- Protect hard-won gains.
- Let Gold prove its strength before re-engaging.
- Compound like a pro (not a gambler).

💵👉🏻 www.ascendforex.com

#AscendForex
#ComebackKings
#GoldRecovery
#RiseAboveTheMarkets
#ForexResilience
#NoLossIsFinal
#ForexSignals

💵⚔️...

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Ascend Forex

@ascendforex.bsky.social

10 months ago

Ascend Forex | For Serious Traders Sharpen your Financial Success and Profit by Trading on Forex, Indices, and Gold Markets with our Winning Signals delivered right to your phone.

...
Setbacks? Just setups for greater comebacks.

💵 Learn Our Recovery Blueprint:
👉🏻 www.ascendforex.com

#AscendForex
#ComebackKings
#GoldRecovery
#RiseAboveTheMarkets
#ForexResilience
#NoLossIsFinal
#ForexSignals

💵⚔️

“Amateurs panic at Reds. Pros see them as temporary.” Onward.

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Earth.com

@earthdotcom.bsky.social

1 year ago

From trash to treasure: E-waste is a literal gold mine Scientists are revolutionizing e-waste recycling by extracting gold with eco-friendly methods and transforming CO2 into valuable chemicals.

From trash to treasure: E-waste is a literal gold mine: Scientists are revolutionizing e-waste recycling by extracting gold with eco-friendly methods and transforming CO2 into valuable chemicals.

#EWasteRecycling #UrbanMining #SustainableTech #GoldRecovery #CircularEconomy #EarthDotCom #EarthSnap