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Updated: Oct 19, 2025
10:44
Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
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Functionalized layered double hydroxides composite bio-adsorbent for efficient copper(II) ion encapsulation from
Shahjalal Khandaker1, Md Tofazzal Hossain1, Palash Kumar Saha1
1Department of Textile Engineering, Dhaka University of Engineering & Technology, Gazipur, 1707, Bangladesh.
Journal of Environmental Management
|September 24, 2021
Summary
This study developed a cost-effective bamboo charcoal-layered double hydroxide (BC-LDH) composite for efficient removal of toxic copper (Cu(II)) ions from wastewater. The novel bio-adsorbent demonstrates high selectivity and capacity, offering a sustainable solution for water purification.
Area of Science:
- Environmental Science
- Materials Science
- Chemistry
Background:
- Wastewater contamination by toxic heavy metals like copper (Cu(II)) poses significant environmental and health risks.
- Developing cost-effective and efficient adsorbents for heavy metal removal is crucial for environmental remediation.
- Bamboo-derived activated charcoal offers an abundant and inexpensive precursor for adsorbent development.
Purpose of the Study:
- To synthesize and characterize a novel bamboo charcoal-Layered Double Hydroxides (BC-LDH) composite bio-adsorbent.
- To evaluate the efficiency of BC-LDH for the selective removal of Cu(II) ions from contaminated water.
- To optimize adsorption parameters and investigate the adsorption mechanism and kinetics for practical applications.
Main Methods:
- Co-precipitation method was used to prepare the BC-LDH composite bio-adsorbent.
- Batch adsorption experiments were conducted to optimize parameters like pH, contact time, adsorbent dose, and initial concentration.
- Physicochemical properties and morphology were analyzed using XRD, SEM, FTIR, and TGA.
- Adsorption kinetics and isotherms were studied to understand the removal mechanism.
Main Results:
- The BC-LDH composite effectively removed nearly 100% of Cu(II) ions within 30 minutes at an optimal pH range of 3.0-6.0.
- The maximum monolayer adsorption capacity was found to be 85.47 mg/g, fitting well with the Langmuir isotherm model (R² = 0.998).
- Adsorption kinetics followed the pseudo-second-order model (R² = 0.999), and the adsorbent showed good reusability after regeneration with 0.10 M HCl.
Conclusions:
- The developed BC-LDH composite is a highly efficient and selective adsorbent for Cu(II) ion removal from wastewater.
- The adsorption mechanism involves ion exchange, surface precipitation, and interactions with surface functionalities.
- This sustainable and cost-effective adsorbent shows great promise for practical wastewater treatment applications.
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