Development of moringa seed powder-modified slag geopolymers for enhanced mechanical properties and effective dye removal
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View abstract on PubMed
Summary
This summary is machine-generated.A novel slag-based geopolymer modified with moringa seed powder (MSP) effectively removes crystal violet (CV) dye. This eco-friendly composite enhances mechanical strength and adsorption capacity, offering a sustainable solution for wastewater treatment.
Area Of Science
- Materials Science: Development of advanced composite materials for environmental remediation.
- Environmental Engineering: Application of waste materials for pollutant removal in wastewater.
- Chemical Engineering: Investigation of adsorption mechanisms and material characterization.
Background
- Crystal violet (CV) is a persistent, non-biodegradable dye posing environmental risks.
- Industrial waste like ground granulated blast furnace slag (GGBFS) and agricultural waste like moringa seed powder (MSP) are abundant.
- Geopolymers offer a promising matrix for developing functional adsorbents.
Purpose Of The Study
- To develop and characterize a modified slag-based geopolymer composite incorporating MSP for enhanced CV removal.
- To evaluate the mechanical properties and adsorption performance of the developed geopolymer.
- To explore the potential of utilizing industrial and agricultural waste in sustainable wastewater treatment.
Main Methods
- Geopolymer composites (SM1, SM2, SM3) were synthesized by incorporating varying percentages of MSP (0.2%, 0.6%, 1%) into GGBFS using alkali activators.
- Material characterization included XRD, FTIR, and SEM analysis.
- Mechanical properties (compressive strength, porosity) and adsorption performance (isotherm, kinetic models) were evaluated through batch experiments.
Main Results
- The SM1 geopolymer composite (0.2% MSP) exhibited a 25.8% improvement in compressive strength (73 MPa at 180 days) compared to the control.
- Modified geopolymer mixes demonstrated superior adsorption of CV compared to the control.
- The SM3 mix achieved a high adsorption capacity of 322.58 mg/g for CV removal.
Conclusions
- Incorporating MSP into slag-based geopolymer significantly enhances both mechanical strength and CV adsorption capacity.
- The modified geopolymer exhibits improved surface properties beneficial for pollutant removal.
- This study highlights a sustainable approach to wastewater treatment by valorizing industrial and agricultural waste.
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