Abstract
Industrial effluents, agricultural runoff, and even waste disposal also contribute to the maximum loading of potentially toxic elements into freshwater ecosystems- the root cause being humans. These pollutants reach the water bodies due to runoff, soil erosion, or deposition from the atmosphere. Recent technological advancements have even proposed more benign methods for potentially toxic elements analysis in the water. In particular, it has been shown that agricultural or industrial waste, when converted into nanocomposites, can adsorb heavy metal ions more efficiently. Biomass-defined nanocomposites comprising metal ion complexes are developed for potentially toxic element ions’ binding and subsequent desorption. This new method eliminates a significant amount of potentially harmful elements from water, which is already ready for discharge as it meets environmental standards and is inexpensive compared to conventional high-temperature methods. Rice straw-derived nanowaste has mainly helped outgoing metal ions by synthesizing 40-60nm nanoparticles. XRD was used to describe the arrangement of atoms within the Rise Straw (RS) and its nanoparticles (RSNP), while the chemical identification was addressed by Raman spectroscopy and FTIR. This is supported by the FESEM, HRTEM, BET, and Zeta analyses. Fe2+ and Ni2+ ions removal efficiencies obtained for RSNP were 90% and 89%, respectively. Critical parameters such as contact time and pH were investigated when contact adsorption of potentially toxic elements to aquatic environments was tested, and thanks to these studies, the parameters were optimized.
Published Version
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