Microbially induced synthesis of cubic and hexagonal selenium nanoparticles

Area of Science:

• Nanobiotechnology
• Microbiology
• Environmental Science

Background:

• Nanoparticle synthesis traditionally relies on chemical and physical methods.
• Nanobiotechnology presents a cost-effective alternative for nanoparticle production.
• Selenium contamination poses environmental and waste disposal challenges.

Purpose of the Study:

• To synthesize selenium nanoparticles using microbial processes.
• To characterize the mineralogical properties of biologically synthesized selenium nanoparticles.
• To explore the potential applications of microbial selenium nanoparticles.

Main Methods:

• Utilized anaerobic metal-reducing bacteria for selenium nanoparticle synthesis.
• Employed characterization techniques to determine nanoparticle size and shape.
• Investigated the mineralogical properties of the synthesized nanoparticles.

Main Results:

• Successfully synthesized selenium nanoparticles via microbial processes.
• Characterized selenium nanoparticles with an average size of approximately 200 nm.
• Observed a predominantly ball shape for the synthesized selenium nanoparticles.

Conclusions:

• Microbial synthesis is a viable and economical method for producing selenium nanoparticles.
• Synthesized selenium nanoparticles demonstrate potential for recovering natural selenate.
• These nanoparticles could aid in immobilizing selenium isotopes in nuclear waste disposal sites.