3D Printing
News Videos Newsletter Contact us
Home / News / Researchers Print Heavy Metal Ion Remover Tablets
qidi

Researchers Print Heavy Metal Ion Remover Tablets

October 7, 2022

Researchers at Clarkson University, New York, have conceived of an eco-friendly method of removing heavy metal ion contaminants from polluted environments, and they’ve done it with 3D printed biopolymer hydrogel tablets.

Read on to learn how their eco-friendly design could offer a solution to a concerning environmental problem.

Heavy Metal

Heavy metals such as nickel, chromium, mercury, cadmium, lead and chromium are used in a wide range of industries such as electroplating, mining, tanneries, painting, and semiconductor manufacturing. They often end up in the environment as a result of various processes. They can not be broken down by natural means, and consequently, they can stay in the environment for literal eons.

They can end up in soil, in the water table, and even in the air that we breathe. It’s a significant hazard to the environment, to flora and fauna right across the food chain, and they are toxic and carcinogenic to humans.

There are traditional methods of removing these things from the environment, but no method is perfect, and many of the traditional means of heavy metal removal can cause additional problems.

hydrogel tablet
The hydrogel tablet process. (Image credit: Clarkson University)

Such methods have included chemical precipitation, electrochemical reduction, membrane separation, and adsorption.

Methods using chemical precipitation are cost effective, but generate secondary pollution,while electrochemical processes are effective at what they do, but have a high financial cost.

Adsorption is the process by which atoms, ions or molecules from a gas, liquid or dissolved solid adhere to the surface of a chemical adsorbate as a thin film. It seems to offer the best balance of cost and performance, but often the adsorbates themselves are less than eco-friendly. Enter hydrogel adsorbates, which could offer the eco-friendly solution that is needed.

Hydrogel

The Clarkson University approach involves the fabrication of 3D printed tablets which are formed with a printable ink containing a recipe of alginate, gelatin, and polyethyleneimine (PEI). The PEI contains primary and secondary amine side chains that bond with the heavy metal ions, removing them from the environment and adhering them to the porous tablets. The tablets are then manually scooped up by some means, and disposed of safely.

Printed tablets
Printed tablets, sucking up the contaminants (Image credit: Clarkson University)

The image above shows the color changes occurring in “CU” shaped printed tablets, and also square tablets over time, in various concentrations of copper solutions. The darker the tablet is, the more the copper is concentrated in the tablet and removed from the fluid.

Successful Tests

In tests, the researchers demonstrated that optimized tablets were capable of removing 60% from 100 ppm copper in 5 hours and up to 98% in 18 hours. For more concentrated copper solutions (1000 ppm), around 25% of the copper was removed from the fluid in 18 hours.

The research has demonstrated the viability of bio-polymer hydrogel adsorbates, and due to the abundance, low cost, and ease of manufacture of the tablets, they are easily scalable.

“Our work demonstrates unique capabilities of green and sustainable materials to be additively manufactured and designed so that they have the ability to capture and remove toxic contaminants, providing innovative solutions for next-generation detection and remediation technologies,” said Professor Silvana Andreescu, the Egon Matijevic Chair in Chemistry at the university.

This work contributes to the development of materials and methods for environmental monitoring and clean up to achieve the global WHO goals for clean and sustainable water.”

The research paper, titled “3D printable polyethyleneimine based hydrogel adsorbents for heavy metal ions removal”, is available for your perusal in the Environmental Science Advances journal, at this link.

Related Story
3D Printing Brings Water from Air
Share:
WhatsApp Twitter Facebook LinkedIn Buffer Reddit E-mail
About the author | Phillip Keane
Phillip is an aerospace engineer from UK. He is a graduate of Coventry University (UK), International Space University (France) and Nanyang Technological University (Singapore), where he studied Advanced Manufacturing at the Singapore Centre for 3D Printing.
Join our newsletter

Our newsletter is free & you can unsubscribe any time.

Latest posts

Designer Creates Modular Sneakers with 3D Printed Soles and Climbing Rope Laces

Daniyar Uderbekov, a designer based in Kazakhstan, has developed UDRB, a pair of modular sneakers designed to address environmental concerns in the footwear... read more »

Fashion

Nestlé Expands 3D Printing Operations for Manufacturing Parts Across UK Sites

Nestlé has implemented standardized 3D printing processes across its UK manufacturing facilities over the past year. The company uses a team of three... read more »

News
Nestlé Expands 3D Printing Operations for Manufacturing Parts Across UK Sites

Cornell Researchers Develop 3D Printing Method for Enhanced Superconductors

Cornell University researchers have developed a one-step 3D printing method that produces superconductors with improved properties. The research, published August 19 in Nature... read more »

News
Cornell Researchers Develop 3D Printing Method for Enhanced Superconductors

Scottish Maritime Project Shows Promise for 3D Printed Ship Components

A Scottish project using large-scale additive manufacturing for shipbuilding components has completed its second phase, demonstrating potential benefits for the maritime industry. The... read more »

News
Scottish Maritime Project Shows Promise for 3D Printed Ship Components

Navy Maintenance Center Uses 3D Printing to Replace Destroyer Pump Component at Fraction of Conventional Cost

The Southeast Regional Maintenance Center (SERMC) has successfully used 3D printing to manufacture a replacement cooling rotor for an Arleigh Burke-class guided missile... read more »

Military
Navy Maintenance Center Uses 3D Printing to Replace Destroyer Pump Component at Fraction of Conventional Cost

Rapid Fusion Launches AI Assistant for Large-Format 3D Printers

British manufacturer Rapid Fusion has introduced "Bob," an AI-powered assistant designed to optimize operations for its large-format 3D printing systems. The company developed... read more »

News
Rapid Fusion Launches AI Assistant for Large-Format 3D Printers

Creality Submits IPO Prospectus for Hong Kong Stock Exchange Listing

Shenzhen-based 3D printer manufacturer Creality has submitted a prospectus to the Hong Kong Stock Exchange for a main board listing. The company began... read more »

News
Creality Submits IPO Prospectus for Hong Kong Stock Exchange Listing

Graphjet Technology Partners with Malaysian University on 3D-Printed Heat Sink Development

Graphjet Technology has entered into a collaboration agreement with the Centre for Materials Engineering and Smart Manufacturing (MERCU) at Universiti Kebangsaan Malaysia (UKM).... read more »

News
Graphjet Technology Partners with Malaysian University on 3D-Printed Heat Sink Development

Humtown drives US Manufacturing Comeback with Additive Sand Casting

Humtown Products, an Ohio-based company, is positioning itself to serve manufacturers looking to bring production back to the United States. The company specializes... read more »

News
Humtown drives US Manufacturing Comeback with Additive Sand Casting

Oak Ridge National Laboratory Releases Advanced Dataset for 3D Printing Quality Monitoring

Oak Ridge National Laboratory has released a comprehensive dataset for its Peregrine software, which monitors and analyzes parts created through powder bed additive... read more »

News
Oak Ridge National Laboratory Releases Advanced Dataset for 3D Printing Quality Monitoring

Social

  • Facebook Facebook 3D Printing
  • Linkedin Linkedin 3D Printing
Join our newsletter

Our newsletter is free & you can unsubscribe any time.

Featured Industries

  • Automotive
  • Aerospace
  • Construction
  • Dental
  • Environmental
  • Electronics
  • Fashion
  • Medical
  • Military
  • QIDI Tech Q1 Pro

    • - Print size: 245 x 245 x 245 mm
    • - 600mm/s max speed
    More details »
    $449.00 QIDI Store
    Buy Now
  • QIDI Plus4

    • - Print size: 305 x 305 x 280 mm
    • - print temperature of 370°C
    More details »
    $799.00 QIDI Store
    Buy Now
  • Snapmaker Artisan Premium 3-in-1

    • - Print size: 400 x 400 x 400 mm
    • - comes with enclosure
    More details »
    $2,999.00 Snapmaker
    Buy Now
  • QIDI Tech X-Max 3

    • - Print size: 325 x 325 x 315 mm
    • - fully enclosed
    More details »
    $799.00 QIDI Store
    Buy Now

Company Information

  • What is 3D Printing?
  • Contact us
  • Join our mailing list
  • Advertise with us
  • Media Kit
  • Nederland 3D Printing

Blog

  • Latest News
  • Use Cases
  • Reviews
  • 3D Printers
  • 3D Printing Metal

Featured Reviews

  • Anycubic Photon Mono M5s
  • Creality Ender 5 S1
  • The Mole 3D Scanner
  • Flashforge Creator 3 Pro

Featured Industries

  • Automotive
  • Aerospace
  • Construction
  • Dental
  • Environmental
  • Electronics
  • Medical
  • Military
  • Fashion
  • Art
2025 — Strikwerda en Dehue
  • Home
  • Join our mailing list
  • Contact us
Blog
  • Latest News
  • Use Cases
  • Reviews
  • 3D Printers
  • 3D Printing Metal
Featured Industries
  • Automotive
  • Aerospace
  • Construction
  • Dental
  • Environmental
  • Electronics
  • Medical
  • Military
  • Fashion
  • Art
Company Information
  • What is 3D Printing?
  • Contact us
  • Join our mailing list
  • Advertise with us
  • Media Kit
  • Nederland 3D Printing