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Removal of BTEX from aqueous solution using Moringa oleifera seed cake
Ione L Silva Almeida1, Nelson R Antoniosi Filho, Maria I Ribeiro Alves
1Institute of Chemistry, University of Uberlândia, Uberlândia, Brazil.
Environmental Technology
|August 4, 2012
Summary
Moringa oleifera seed cake effectively removes BTEX pollutants from water. This low-cost natural adsorbent shows comparable performance to activated carbon, offering a sustainable solution for water purification.
Area of Science:
- Environmental Science
- Water Treatment
- Adsorption Technology
Background:
- Benzene, toluene, ethylbenzene, and xylenes (BTEX) are common industrial pollutants in aqueous solutions.
- Effective removal of BTEX is crucial for environmental protection and public health.
- Natural adsorbents offer a cost-effective and sustainable alternative to conventional treatment methods.
Purpose of the Study:
- To investigate the efficacy of Moringa oleifera seed cake (MOSC) for BTEX removal from aqueous solutions.
- To optimize adsorption conditions including contact time, pH, and initial BTEX concentration.
- To compare the adsorption capacity of MOSC with commercial activated carbon.
Main Methods:
- Batch adsorption experiments were conducted using MOSC as the adsorbent.
- System parameters such as contact time, pH, and initial BTEX concentration were systematically varied.
- Adsorption isotherms (Langmuir and Freundlich) were applied to analyze the adsorption data.
- Performance was statistically compared to commercial activated carbon using a t-test.
Main Results:
- MOSC achieved high removal percentages for individual BTEX compounds (75-88%) under optimal conditions.
- Optimal removal was observed at pH 7.0, 20 min contact time, and 1 mg L(-1) BTEX concentration with 10 g L(-1) adsorbent dose.
- Adsorption data fitted both Langmuir and Freundlich isotherm models.
- No significant difference in BTEX removal efficiency was found between MOSC and commercial activated carbon.
Conclusions:
- Moringa oleifera seed cake is a highly effective and economical natural adsorbent for BTEX removal.
- MOSC demonstrates comparable performance to activated carbon, highlighting its potential in water treatment.
- The study supports the use of MOSC as a sustainable material for mitigating BTEX contamination in water.
