Examining nitrate surface absorption method from polluted water using activated carbon of agricultural wastes

Abstract

Water resources polluted with nitrate are a significant environmental problem around the world that provide a serious threat to human health. In addition, the phenomenon of Eutrophication is improved by large amounts of nitrate in water sources. Consequently, it has been extremely significant to remove and reduce it in wastewater and water resources to less than the determined standard. Currently, it is possible to apply various physical and chemical methods to eliminate nitrate from various municipal, industrial, and agricultural wastewaters. We compared the methods of removing the nitrate from water in this research and ultimately, discussed the surface absorption method as a method with high adsorption efficiency using low-cost adsorbents of plant wastes. We also generally examined parameters that are effective on the production of the best adsorbent in terms of adsorption power. Furthermore, we have examined the influences of variables such as pH, contact time, microwave power, and initial adsorbent concentration as effective parameters on the action and reaction between the adsorbent and the pollutant on nitrate absorption.