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Updated: May 3, 2026
09:39
Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
Published on: November 28, 2014
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Adsorption of Arsenic by Magnetically Modified Biochar from Mulberry Tree Stems.
Sheng Hu1,2,3,4,5,6, Jiayu Yang1,2,3,4,5, Jingnan Zhang1,2,3,4,5
1Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China.
Toxics
|November 27, 2025
Summary
Magnetically modified biochar from mulberry stems effectively removes arsenic(V) from water. This Fe-BC-500 material shows high adsorption capacity and specificity, offering a promising solution for water purification.
Area of Science:
- Environmental Science
- Materials Science
- Water Treatment
Background:
- Arsenic contamination in water poses significant health risks.
- Biochar-based materials are emerging as effective adsorbents for pollutants.
- Magnetic modification enhances biochar's applicability in water remediation.
Purpose of the Study:
- To synthesize and characterize magnetic biochar (Fe-BC-500) from mulberry stems.
- To evaluate the adsorption performance of Fe-BC-500 for arsenic(V) removal.
- To investigate the influence of environmental factors on arsenic(V) adsorption.
Main Methods:
- Co-precipitation method for synthesizing Fe-BC-500.
- Batch adsorption experiments to test arsenic(V) removal.
- Systematic characterization of Fe-BC-500 structure and properties.
Main Results:
- Optimal arsenic(V) adsorption occurred at pH 4 and initial concentration of 20 mg/L.
- Adsorption followed pseudo-second-order kinetics and Langmuir isotherm models.
- Adsorption was influenced by co-existing anions, with phosphate showing the strongest inhibition.
Conclusions:
- Fe-BC-500 demonstrates high efficiency and specificity for arsenic(V) removal via surface complexation.
- Magnetically modified biochar shows significant potential for practical application in arsenic-contaminated water treatment.
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