Thermite reaction driven pyrotechnic formulation with promising functional performance and reduced emissions.

Area of Science:

• Pyrotechnics and Explosives Science
• Green Chemistry
• Materials Science

Background:

• Commercial firecrackers contribute to significant air pollution.
• Development of environmentally safer pyrotechnic devices is a societal need.
• Thermite reactions offer a basis for controlled exothermic reactions.

Purpose of the Study:

• To develop and characterize 'Green firecrackers' with reduced emissions.
• To investigate the performance, stability, and thermodynamic properties of the novel composition.
• To assess the environmental impact and economic viability of the green firecrackers.

Main Methods:

• Formulation of green firecrackers using aluminum, potassium nitrate, and sulfur with additives.
• Evaluation of functional performance via sound measurement.
• Assessment of long-term stability through ageing, thermal stability, and moisture tests.
• Thermodynamic analysis using experimental and theoretical methods.
• Analysis of emission reduction mechanisms.

Main Results:

• The developed green firecrackers demonstrate a 70% reduction in emissions compared to commercial counterparts.
• The thermite-based composition is self-contained and self-sustained, producing heat and sound.
• Functional performance and long-term stability were confirmed through various tests.
• Thermodynamic calculations aligned with experimental data.
• The cost of raw materials is comparable to conventional firecrackers.

Conclusions:

• The developed green firecrackers represent an environmentally benign and sustainable solution.
• These reduced emission firecrackers have significant potential for commercialization.
• The study highlights the successful application of green chemistry principles in pyrotechnics.
• The findings support the transition towards safer and eco-friendly pyrotechnic alternatives.