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Fe/sponge structure peanut shell carbon composite preparation for efficient Fenton oxidation crystal violet
Minghui Wu1, Shuang Li1, Shiping Zhou1
1Key Laboratory of State Forestry and Grassland Administration On Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China (Southwest Forestry University), Kunming, 650224, People's Republic of China.
Environmental Science and Pollution Research International
|September 16, 2023
Summary
A novel Fe/SPSC nanocomposite effectively removes crystal violet (CV) dye from water through combined adsorption and Fenton oxidation. This advanced material demonstrates high efficiency and reusability, offering a sustainable solution for water purification.
Area of Science:
- Materials Science
- Environmental Chemistry
- Nanotechnology
Background:
- Crystal violet (CV) is a common water pollutant requiring efficient removal methods.
- Adsorption and Fenton oxidation are effective but often studied separately.
- Developing synergistic approaches can enhance pollutant degradation efficiency.
Purpose of the Study:
- To synthesize and characterize a novel iron-modified sponge structure peanut shell carbon (Fe/SPSC) nanocomposite.
- To investigate the synergistic effect of adsorption and Fenton oxidation for crystal violet removal.
- To optimize conditions and evaluate the performance of Fe/SPSC for CV degradation.
Main Methods:
- Wet impregnation method for synthesizing Fe/SPSC nanocomposite.
- Characterization using techniques like XPS to confirm material composition.
- Experimental evaluation of CV removal efficiency under varying conditions (catalyst dosage, H2O2 concentration, pH).
Main Results:
- The 7% Fe/SPSC nanocomposite exhibited optimal CV removal activity.
- Under optimal conditions (2.0 g/L Fe/SPSC, 0.1 mL 30% H2O2, pH 7.0), a 95.5% CV degradation rate was achieved.
- The degradation amount reached 143.25 mg/g, with hydroxyl radicals (•OH) identified as the key active species.
Conclusions:
- Fe/SPSC nanocomposite demonstrates significant synergy between adsorption and Fenton oxidation for efficient CV removal.
- The material offers advantages such as high degradation performance, no iron sludge formation, short reaction times, and good reusability.
- This study presents a promising, sustainable method for treating CV-contaminated water.
