Options
Hybrid Treatment Technologies for Dye Degradation in Wastewater
Journal
Environmental Science and Engineering
ISSN
18635520
Date Issued
2022-01-01
Author(s)
Singh, Swati
Abstract
Industrial effluents from textile, paper, pharmaceutical and food processing industry are contaminated with high concentration of various dyes. Most of the dyes are aromatic with azo (–N=N–) and nitro (–NO2) functional groups. The effluents containing dyes can affect aquatic life, human health and environment due to toxic, non-biodegradable and carcinogenic nature of dyes. Advanced oxidation processes (AOPs) are known to decolourize and degrade dye effluents. However, a single AOP or any other physicochemical process alone is ineffective for complete degradation of the dye. Therefore, hybrid treatment technologies comprising a combination of AOPs or physicochemical processes have gained recognition in the recent decade for the removal of recalcitrant compounds. In the present chapter, an in-depth evaluation of potential hybrid technologies is performed with a focus on previous literature on hybrid treatment methods for the degradation of dye in wastewater. In addition, limitations of the different hybrid systems are discussed for their better application during wastewater treatment.
Subjects