Invasive lignocellulose-based plants bio-sorbents for the elimination of nitrites of emerging concern from water

Abstract

The regulation of nitrite levels in potable water is primarily motivated by the potential for excessive amounts to induce methemoglobinemia, which is also referred to as blue baby syndrome. Human and industrial activities generate and release nitrite-containing wastewater into water bodies, thereby endangering ecosystem health and contaminating water sources. Biosorption is an alternative and environmentally beneficial method of wastewater treatment. These methods have several advantages over conventional methods, including their cost-effectiveness, accessibility, and reusability. This study investigates the viability of utilizing guava leaf, neem leaf, orange peel, banana peel, and custard apple leaf as bio-sorbents for the removal of nitrite from contaminated water. One hundred percent removal efficiency is the result of this endeavor. Following an examination of all six bio-sorbents, it was observed that the guava leaf bio-sorbents exhibited the most effective performance in the removal of nitrite from water. Additionally, the impacts of various parameters including contact duration, agitation speed, adsorbent dosage, pH, and temperature are also investigated. Additionally, prior to utilization, the biomass may undergo physical and chemical modifications. To enhance the analysis of each bio-sorbent, a range of characterization techniques are utilized, including XRD, SEM-EDX, FTIR, and BET analysis. Economic feasibility can be achieved by regenerating and reprocessing the bio-sorbent subsequent to the nitrites removal process.