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Related Concept Videos

Precipitation Gravimetry01:03

Precipitation Gravimetry

11.8K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
11.8K
Electrodeposition01:08

Electrodeposition

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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...
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Review on nickel-based adsorption materials for Congo red.

Yingqiu Zheng1, Bei Cheng1, Jiajie Fan2

  • 1State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, China.

Journal of Hazardous Materials
|August 18, 2020
PubMed
Summary

Nickel-based materials show promise for removing Congo red dye from water. Research focuses on improving adsorbent efficiency, stability, and recyclability for practical environmental applications.

Keywords:
AdsorptionCongo redMechanismNickel-based adsorbents

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Area of Science:

  • Environmental Science
  • Materials Science
  • Chemistry

Background:

  • Synthetic dyestuffs, like Congo red (CR), contaminate aquatic environments, posing ecological and health risks.
  • Adsorption is an effective, cost-efficient method for dye removal, avoiding secondary pollution.
  • Nickel-based materials offer diverse morphologies and high surface areas, making them suitable for CR adsorption.

Purpose of the Study:

  • To review the progress of nickel-based materials in Congo red adsorption.
  • To present the interactions between CR molecules and nickel-based adsorbents.
  • To summarize adsorption mechanisms and propose future directions.

Main Methods:

  • Literature review of research on nickel-based adsorbents for CR removal.
  • Systematic presentation of CR-nickel adsorbent interactions.
  • Summary of adsorption mechanisms and challenges.

Main Results:

  • Nickel-based materials exhibit strong affinity and potential for CR adsorption.
  • Various nickel-based materials (hydroxides, oxides, LDHs, MOFs, etc.) have been studied.
  • Challenges remain in achieving high efficiency, stability, and recyclability for practical use.

Conclusions:

  • Nickel-based adsorbents are promising for Congo red removal, but practical application challenges persist.
  • Further research is needed to enhance adsorbent performance and recyclability.
  • Understanding adsorption mechanisms is crucial for developing advanced materials.