Related Experiment Video
Updated: Jun 27, 2026
06:36
Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
Adsorption study of copper (II) by chemically modified orange peel
Ningchuan Feng1, Xueyi Guo, Sha Liang
1School of Metallurgical Science and Engineering, Central South University, Changsha, China.
Journal of Hazardous Materials
|December 17, 2008
Summary
Chemically modified orange peel effectively removes copper (II) ions from wastewater. This novel adsorbent boasts high capacity and rapid adsorption, showing promise for industrial applications.
Area of Science:
- Materials Science
- Environmental Chemistry
- Biomass Valorization
Background:
- Orange peel is an abundant agricultural waste.
- Developing efficient adsorbents for heavy metal removal is crucial for environmental protection.
- Chemical modification can enhance the adsorption properties of biomass.
Purpose of the Study:
- To synthesize a novel adsorbent from modified orange peel.
- To evaluate the adsorption performance of the modified orange peel for copper (II) ions.
- To assess the potential of this adsorbent in treating electroplating wastewater.
Main Methods:
- Graft copolymerization of methyl acrylate with cross-linked orange peel.
- Hydrolysis to obtain poly (acrylic acid) grafted biomass.
- Characterization using infrared spectroscopy (IR), scanning electron microscopy (SEM), and thermogravimetry (TG).
- Adsorption experiments to determine capacity and kinetics, fitting to Langmuir isotherm and pseudo-second-order models.
Main Results:
- Successful synthesis of a chemically modified orange peel adsorbent.
- Verified presence of poly (acrylic acid) on the biomass surface.
- High adsorption capacity for Cu (II) (289.0 mg g(-1)), 6.5 times higher than unmodified biomass.
- Fast adsorption kinetics following pseudo-second-order model.
- Effective removal of Cu (II) from electroplating wastewater with recyclability over four cycles.
Conclusions:
- Chemically modified orange peel is a highly efficient adsorbent for Cu (II) removal.
- The adsorbent demonstrates excellent performance and reusability for wastewater treatment.
- Valorization of agricultural waste like orange peel offers a sustainable solution for heavy metal remediation.
More Related Videos
Related Concept Videos
00:56Extraction: Advanced Methods
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
01:17Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
01:08Electrodeposition
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...