The rapid advancement of technology has led to an increase in electronic waste (e-waste), posing significant environmental challenges. Among the various materials present in e-waste, silver nanoparticles (AgNPs) are of particular interest due to their valuable properties and widespread use in electronic devices. However, the disposal of AgNPs can lead to environmental contamination. Therefore, the recycling of AgNPs from e-waste is crucial for sustainable development.
Chitosan, a natural biopolymer derived from chitin, has emerged as an effective material for the recovery of AgNPs due to its biocompatibility, biodegradability, and excellent binding properties. The process involves the collection and dismantling of e-waste to extract AgNPs. Once extracted, chitosan is employed to bind with the nanoparticles through a series of chemical reactions that include ion exchange and chelation.
In the realm of nanotechnology, the green synthesis of silver nanoparticles (AgNPs) has emerged as a significant area of interest. The process leverages plant extracts and microorganisms, offering an eco-friendly alternative to traditional methods. These AgNPs exhibit potent antimicrobial and antibacterial properties, making them invaluable for various medical and environmental applications.
Moreover, innovative approaches have been developed to recover silver from electronic waste, further promoting sustainability. This recovered silver is then utilized in the synthesis of AgNPs, demonstrating a practical application of recycling in the field of nanotechnology.
The research in this area is well-documented, with numerous scientific articles providing a comprehensive overview of the advancements in the field. This includes the fabrication of AgNPs from electronic waste and their application on cotton fabric as an antimicrobial agent, highlighting the potential of AgNPs-chitosan based nanocomposites in the textile industry.
Deniz Eren Erisen
The chitosan-AgNP complex is then separated from the waste stream, and AgNPs are recovered through a desorption process. The recovered AgNPs can be reused in the production of new electronic components, reducing the need for mining fresh silver and minimizing environmental impact.
This recycling method not only provides a solution to e-waste management but also contributes to the circular economy by closing the loop in the lifecycle of silver nanoparticles. It demonstrates how innovative use of biopolymers like chitosan can address environmental issues associated with technological progress.
Main Achivements on Research
- Green Synthesis of AgNPs: The article discusses the fabrication of silver nanoparticles (AgNPs) from electronic waste and their application on cotton fabric as an antimicrobial agent using a green synthesis method with Eichhornia crassipes leaf extract.
- Characterization and Application: The synthesized AgNPs were characterized by FTIR and SEM tests, and their antimicrobial properties were evaluated against gram-positive and gram-negative bacteria, showing satisfactory results.
- Environmental Significance: This study highlights an eco-friendly approach to recycling electronic waste and the potential use of AgNPs-chitosan based nanocomposites in the textile industry for antimicrobial applications.
- Part 2 of the current page discusses various aspects of silver nanoparticles (AgNPs), focusing on their synthesis, properties, and applications. Here’s a brief summary:
- Green Synthesis: The section highlights the biosynthesis of AgNPs using plant extracts and microorganisms, emphasizing eco-friendly methods.
- Biocidal Properties: It reviews the antimicrobial and antibacterial efficacy of AgNPs, which is significant for medical and environmental applications.
- Recycling from E-Waste: The text includes innovative approaches to recover silver from electronic waste and utilize it in nanoparticle synthesis.
Reference
Mondal, M.S., Paul, A. & Rhaman, M. Recycling of silver nanoparticles from electronic waste via green synthesis and application of AgNPs-chitosan based nanocomposite on textile material. Sci Rep 13, 13798 (2023). https://doi.org/10.1038/s41598-023-40668-7