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Arsenic(V) sorption using chitosan/Cu(OH)2 and chitosan/CuO composite sorbents.
Khalid Z Elwakeel1, Eric Guibal2
1Environmental Science Department, Faculty of Science, Port-Said University, Port-Said, Egypt.
Carbohydrate Polymers
|October 3, 2015
Summary
Composite sorbents effectively remove arsenic(V) from water. These reusable materials show high efficiency and recovery over multiple cycles, offering a sustainable solution for arsenic remediation.
Area of Science:
- Environmental Chemistry
- Materials Science
- Water Treatment
Background:
- Arsenic contamination in water poses significant health risks.
- Developing efficient and reusable sorbents is crucial for arsenic remediation.
Purpose of the Study:
- To synthesize and characterize composite sorbents for As(V) removal.
- To investigate the sorption mechanism, kinetics, and thermodynamics.
- To evaluate the sorbent's reusability and elution efficiency.
Main Methods:
- Composite sorbents prepared using chitosan, Cu(OH)2, or CuO.
- Characterization via SEM, EDX, and Zeta potential analysis.
- Sorption studies conducted under varying pH, temperature, and concentration.
Main Results:
- Optimal As(V) removal at pH 4.
- Langmuir isotherm and pseudo-second-order kinetics observed.
- Endothermic sorption process confirmed.
- High removal efficiency (>95%) and recovery over five cycles using saline solution for elution.
Conclusions:
- Chitosan-based composite sorbents are effective for As(V) removal.
- The sorbent demonstrates excellent reusability and elution performance.
- This technology offers a promising approach for sustainable arsenic remediation.
Keywords:
Arsenate ion (PubChem CID: 27401)ArsenicChitosanChitosan (PubChem CID: 21896651)Copper hydroxide (PubChem CID: 164826)Copper hydroxide and oxideCopper oxide (PubChem CID: 14829)Epichlorohydrin (PubChem CID: 7835)KineticsSorbent recyclingSorption isothermsMore Related Videos
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