Sustainable nanoparticles of Non-Zero-valent iron (nZVI) production from various biological wastes

Abstract

Given the growing importance of biological wastes (such as leaves from pomegranate, green tea, oak, lemon, orange, peach, kiwi, and neem) based iron nanoparticles over the past ten years and their applications in the environment, it is important to investigate new methods for nanoparticle production. Significant research has been conducted in this field as synthesizing these materials now requires careful consideration of green chemistry principles, minimization of disposal, cleaner solvents, energy efficiency, and caring precursor ingredients. The goal of this work is to evaluate the characteristics of environmentally friendly, sustainable non-zero-valent Iron (nZVI) nanoparticle production from different tree’s’ leaves. The requirements required for a product for environmental cleanup were taken into consideration when examining size, form, reactivity, and aggregation propensity. Three categories can be formed from the results of extracts in terms of antioxidant measurements (reported concentration of Fe (II)): >60 mmol/L, 20 mmol/L to 40 mmol/L, and 2 mmol/L to 5 mmol/L. Neem, oak, and green tea leaves yield the highest effects when compared to other tree leaves. It is possible to inject a different emulsion into the contaminated zone that contains nZVI, vegetable oil, and water. The best leaf extracts and operating conditions for generating sustainable nanoparticles from the bio-wastes of plant leaves must be chosen in order to use green nZVIs in environmental cleanup. These environmentally friendly nZVI nanoparticles can be used to treat impure waters to get rid of heavy metals and can use as an emulsion for paints.