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Updated: Jul 12, 2025
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Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
Published on: November 28, 2014
35.2K
Sustainable wastewater purification with crab shell-derived biochar: Advanced machine learning modeling &
Amina Bibi1, Hammad Khan1, Sajjad Hussain1
1Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan.
Bioresource Technology
|October 22, 2023
Summary
Crabshell waste converted to porous carbon (CB900) effectively removes persistent dyes and other contaminants. This sustainable adsorbent shows high capacity and cost-effectiveness for environmental remediation.
Area of Science:
- Environmental Chemistry
- Materials Science
- Green Chemistry
Background:
- Persistent dyes pose significant environmental and health risks.
- Effective detoxification methods are crucial for ecological well-being.
- Sustainable adsorbent materials are needed to address water pollution.
Purpose of the Study:
- To develop a cost-effective adsorbent from crabshell waste for dye removal.
- To optimize adsorption parameters using machine learning models.
- To evaluate the adsorbent's performance for various contaminants and its economic viability.
Main Methods:
- Crabshell waste was pyrolyzed to produce porous carbon (CB900).
- XGBoost modeling and PSO-XGB optimization were used to predict and optimize dye adsorption.
- Adsorption isotherms (Langmuir, Freundlich) and thermodynamic analysis were performed.
- The adsorbent's efficacy was tested against chromium and sulfasalazine.
Main Results:
- CB900 achieved high Congo Red removal (90.5%) and adsorption capacity (256.36 mg g⁻¹).
- PSO-XGB optimization identified optimal conditions yielding 68.39% removal and 822.15 mg g⁻¹ capacity.
- Adsorption followed Langmuir and Freundlich isotherms, indicating physical, spontaneous, and endothermic processes.
- CB900 demonstrated effectiveness against chromium and sulfasalazine, with a low production cost of $8.5/kg.
Conclusions:
- CB900 derived from crabshell waste is a highly efficient and sustainable adsorbent for removing diverse toxic contaminants.
- Machine learning optimization significantly enhances understanding and performance of the adsorption process.
- The low production cost and broad applicability make CB900 a promising solution for wastewater treatment.
