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Related Experiment Video

Updated: Sep 14, 2025

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand

Published on: September 8, 2016

Selective boron removal from seawater using poly-GMA-Glucamine.

Xiangyu Li¹, Hyunju Park², Choon-Ki Na¹

¹Department of Environmental Engineering, Mokpo National University, Jeonnam, South Korea.

Environmental Technology

|July 18, 2025

Summary

A novel poly(GMA-glucamine) adsorbent effectively removes boron from seawater, overcoming reverse osmosis limitations. This reusable material shows high capacity and salt tolerance, crucial for desalination.

Keywords:

Boron adsorption glucamine-functionalised polymer isotherm modelling regeneration seawater treatment

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Expression, Solubilization, and Purification of Eukaryotic Borate Transporters

Expression, Solubilization, and Purification of Eukaryotic Borate Transporters

Published on: March 7, 2019

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Last Updated: Sep 14, 2025

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand

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Published on: September 8, 2016

Improved In-gel Reductive β-Elimination for Comprehensive O-linked and Sulfo-glycomics by Mass Spectrometry

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Published on: November 20, 2014

Expression, Solubilization, and Purification of Eukaryotic Borate Transporters

Expression, Solubilization, and Purification of Eukaryotic Borate Transporters

Published on: March 7, 2019

Area of Science:

Materials Science
Environmental Chemistry
Chemical Engineering

Background:

Boron removal from seawater is challenging for reverse osmosis (RO) membranes at neutral pH.
Existing methods often struggle with efficiency and selectivity in complex water matrices.

Purpose of the Study:

To develop and characterize a highly selective adsorbent for boron removal.
To evaluate the performance of the adsorbent in seawater desalination applications.

Main Methods:

Synthesis of poly(GMA-glucamine) via radical polymerization and functionalization with N-methyl-D-glucamine (NMDG).
Characterization using FT-IR spectroscopy and SEM analysis.
Adsorption isotherm studies in deionised water and seawater, fitted to Langmuir, Dubinin-Radushkevich, and Temkin models.

Main Results:

The adsorbent demonstrated high boron adsorption capacities (17.38 mg/g in DI water, 16.60 mg/g in seawater).
Adsorption followed the Langmuir model, indicating monolayer coverage, and suggested chemisorption.
The material maintained over 75% of its capacity after five regeneration cycles.

Conclusions:

Optimized poly-GMA-glucamine exhibits excellent boron selectivity and regeneration performance in seawater.
The adsorbent is a high-capacity, salt-tolerant, and reusable option for boron removal from RO permeates.
This material shows significant potential for enhancing seawater desalination processes to meet drinking water standards.