Treatment of organic wastes from industries is a challenging task as they are hard to remove. Some of them even use toxic chemicals in the processing steps. Most of the available water recycling or treatment methods are not sustainable. One way of tackling the problem is to reduce the pollution levels by decreasing the usage of chemicals in the process, and the other is to find ways to reuse or reduce the contaminants in the effluent by treatment methods. In this aspect, water is one of the non-renewable sources that is running out very fast and is polluted drastically day by day. The accelerated levels of urbanization and increase in population deplete the finite resources essential for human sustenance. The need of the hour relies on finding new but sustainable ways to curb rising pollution levels. These articles present only selected issues from a very wide area, which is the removal of organic pollution in water environment, but can serve as important references for future studies. The presented articles were categorized into three major fields: new approaches to the degradation of water pollutants, new methods of isolation and determination of the emerging organic contaminants (EOCs), and the occurrence of EOCs in the water environment. This Special Issue contains nine peer-review articles presenting research on the determination and removal of environmentally hazardous organic compounds from aqueous samples. Therefore, the search for effective methods of wastewater and other polluted water treatment is an important element of caring for the natural environment. Municipal and industrial wastewater usually contain a large amount of various organic compounds and are the main source of pollution of the aquatic environment with these substances. A side effect of the production and use of these materials is the production of solid waste and wastewater. The authors report different times and efficiencies related to the degradation pathways (physical, chemical and biological) and self-removal of BTR from the environment.The development of civilization entails a growing demand for consumer goods. According to the literature, the identified pathways of BTR degradation are biodegradation, biotransformation, bioaccumulation, bioadsorption, photochemical transformation, hydrolysis, hydroxylation, oxidation, chlorination, UV/chlorination, UV-A photolysis, AOPs, membrane processes, polymerization and methylation (Weiss et al., 2006 Reemtsma et al., 2010 Liu et al., 2011 Domínguez et al., 2012 Seeland et al., 2012 Asimakopoulos et al., 2013 Liu et al., 2013 Fent et al., 2014 Alotaibi et al., 2015 Cantwell et al., 2015 Mazioti et al., 2015 Molins-Delgado et al., 2015 Felis et al., 2016 Miksch et al., 2016 Lu et al., 2018 Martín-Rilo et al., 2018 Gatidou et al., 2019 Kowalska et al., 2019 Ahmad et al., 2020 Chen et al., 2020 Piekutin et al., 2021). The most important factors influencing the degradation of BTRs, including biodegradability are the chemical characterization of the surface (water, soil, sediment, dust, etc.) and its pollution history, it's anthropogenic characteristics, contact time and the vector for benzotriazole transport (Parajulee et al., 2017).
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