**1. Introduction**

The pollution of water is one of the most important troubles of the whole globe, because of the unsuitable discharge of used water of the industries into the environment, excessive usage of chemical fertilizers in agricultural fields, production of roads, buildings, etc. [1, 2]. Further, the population growth is very expeditious, which harms the availability of drinking water to everyone [3]. Especially, industrialization and urbanization, pollution of water have accelerated on a large scale [4]. There are many chemical industries, which are dealing with the dyes and among them, the large quantity of dye utilization and wastewater discharge after the process is being done by the textile industries exclusively. The utilization of such dangerous substances has been ensuing in water pollution and environmental contamination. The water launched after the material guidance includes dissolved solids, color, harmful metals

(chromium), production gums (pentachlorophenol, detergents), appropriating retailers (trisodium polyphosphate and sodium hexametaphosphate, chlorine, azo dyes), and stain removers (CCl4, residual chlorine, solving retailers similar; formaldehyde and benzidine). Maximum of the aforementioned chemical compounds are dangerous and a danger to the surroundings [5, 6]. From this time, the wastewater is wanted to be handled nicely earlier than it's far discharged into the environment or used for different purposes [7]. Thus, to minimize the toxicity, pollution, and to protect the environment, it is important to treat the dye wastewater before discharge [8]. Phytoremediation is a good and significantly hired environmental cleanup biotechnology primarily based totally on volatilization, stabilization, degradation, or extraction of pollution with the aid of using plants and their related microorganisms [9, 10]. Over the previous couple of decades, phytoremediation strategies had been elaborately studied and seemed as a effective tool for eliminating and degrading many unfavorable contaminants, which include antibiotics, HMs, landfill leachate, fabric dyes, pesticides, hormones, petroleum, explosives, or even poisonous gases [11, 12]. Phytoremediation is turning into an increasing number of famous in authorities corporations and industries because the cost-powerful and the restricted investment for environmental governance [13]. The phytoremediation procedure is pushed with the aid of using sun strength and might offer ecological landscapes for rehabilitated areas, which additionally has esthetic value at the same time as treating pollutants [11]. It provides a sustainable method for nutrients recovery and poisonous contaminants elimination. Numerous hydrophytes with distinct species had been applied for the control of LW, for example, Spirodela polyrhiza, Lemna minor, Polygonum hydropiper, Lemna gibba, Eichhornia crassipes, Pistia stratiotes, Scenedesmus quadricauda, Typha latifolia, Phragmites australis, Limnobium laevigatum, Chlamydomonas reinhardtii, Myriophyllum aquaticum, Coelastrella sp., Lemna aequinoctialis [14–23]. The main objective in this study to evaluate the Potential of aquatic plants for Pesticide removal in Wastewater: A case study on pentachlorophenol. Also, to discuss some example of phytoremediation process for pesticide removal.
