Biodegradable Electronics: A Sustainable Solution to the Growing Problem of Electronic Waste

By: Muhammad Ahmed

Since the advent of digital technology, electronic devices have become catalysts in modern life. Electronics are being sought in rapidly growing demand from smartphones and laptops to health monitors that work on electric shocks and smart home systems. However, this wonderful progress has a terrible downside in the form of e-waste. According to the Global E-waste Monitor 2020, the world generated a staggering 53.6 million metric tons of e-waste in 2019, and it was forecasted that if prevailing trends continue, this figure will be 74 million metric tons in 2030 (Forti et al., 2020). This certainly is an environmental challenge, as discarded electronics become an environmental hazard, releasing several toxic substances that enter the ground and water. Given that, researchers and industries are also thinking about biodegradable electronics as an alternative to minimize e-waste and create a greener future.

E-waste poses a dual challenge: one volume and one constitution. Many electronic devices contain heavy metals such as lead, cadmium, or mercury, flame retardants, and other chemicals detrimental to human health and ecosystems. When improperly disposed—as is commonly done in countries that lack an adequate recycling infrastructure—these substances enter the environment. There are other components that either cannot be recycled efficiently or for which recycling is economically unfeasible, thus increasing the problem. According to the United Nations University, a mere 17.4 percent of e-waste generated in 2019 was actually formally collected and recycled (Forti et al., 2020).

Biodegradable electronics propose a radical change in how we conceive and dispose of devices. Unlike conventional electronics, which potentially stay in a landfill for hundreds of years, biodegradable electronics use environmentally degradable materials. These include organic polymers, cellulose, silk proteins, and even materials derivable from food waste, such as starch or gelatin (Irimia-Vladu, 2014). Such devices are usually designed to degrade on purpose under certain conditions, e.g., exposure to water, heat, or specific microorganisms, hence alleviating danger during their use.

Such recent innovations demonstrate the possibility of using biodegradable electronics for a varied scope of applications. For example, Stanford researchers developed a flexible electronic device made of cellulose nanofibrils and silver nanowires, which is designed to dissolve in water without causing any harm to the residus (Kang et al., 2015). Likewise, researchers at the University of Wisconsin-Madison have created biodegradable computer chips from wood-based materials that could considerably diminish the environmental fingerprint of the devices of the future (Zhu et al., 2015).

Large-scale commercialization of biodegradable electronics holds out several enticing prospects. They might reduce the pressure on landfills by a considerable amount, diminish the need for hazardous materials, and lessen recycling burdens to some extent. Moreover, if used in medical diagnoses such as biodegradable sensors and implants, they may hold good promise for dissolving the need for removing the devices surgically; thereby lessening healthcare costs and risk to the patient’s life. In addition, biodegradable electronics are well placed in the framework of a circular economy, where materials are designed to either re-enter the natural cycle or industrial cycle rather than end up as wastes.

Nevertheless, some obstacles stand in the way of bringing biodegradable electronics into widespread application. One of the major hurdles is performance. Biodegradable materials often do not yet impart the full measure of wear resistance, conductivity, or efficiency of traditional components into any given item, thus limiting their use in high-tech devices. In addition, manufacturing systems for biodegradable electronics are stoll deep in the developmental stages-and for simple mass production to even be considered, more innovations and investments will be required. Then the regulatory frameworks must morph in parallel to endorse the safe adoption of biodegradable technologies into consumer markets.

In short, biodegradable electronics appear to be an opportunity in view of the ever-increasing problems caused by e-waste. This is where science and technology adopt a new challenge for the life-cycle of our devices with environmentally compatible approaches. Some problems do lie in performance, manufacture, and regulation, but with continued research and an increased awareness of e-waste impact, it is very possible that we will indeed go into environmentally conscious electronics because of it.

Works Cited

Forti, V., Baldé, C. P., Kuehr, R., & Bel, G. (2020). The Global E-waste Monitor 2020: Quantities, flows and the circular economy potential. United Nations University (UNU), International Telecommunication Union (ITU) & International Solid Waste Association (ISWA) https://www.researchgate.net/publication/342783104_The_Global_E-waste_Monitor_2020_Quantities_flows_and_the_circular_economy_potential

Irimia-Vladu, M. (2014). "Green electronics: biodegradable and biocompatible materials and devices for sustainable future." Chemical Society Reviews, 43(2), 588-610. https://doi.org/10.1039/C3CS60235D

Kang, S. K., Hwang, S. W., Yu, S., et al. (2015). "Biodegradable thin metal foils for transient electronics." Advanced Materials, 27(32), 5157-5163.

https://advanced.onlinelibrary.wiley.com/doi/abs/10.1002/adfm.201403469

Zhu, H., Fang, Z., Preston, C., Li, Y., & Hu, L. (2015). "Transparent paper: fabrications, properties, and device applications." Energy & Environmental Science, 7(1), 269-287. https://doi.org/10.1039/C3EE43024C