Removal of fluorescent dissolved organic matter in biologically treated textile wastewater by ozonation-biological aerated filter

Integrated Ozone and Anoxic-Aerobic Activated Sludge Reactor for Endek (Balinese Textile) Wastewater Treatment

“…Ozone and biological aerated filter combinations also produce effluents that are less than 50 mg/L (Wu, et al 2016), where the results of this study only reached 14 mg/L. Color removal in the study shows the similarity of results to ozone combination and biological activated carbon treatment with a value of 73% (Wang, et al 2018 (Table 2).…”

Tunable auto-combustion preparation of TiO2nanostructures as efficient adsorbents for the removal of an anionic textile dye

“…Furthermore, the thermodynamic constants can provide information on the energy changes associated with the adsorption process. Therefore, some thermodynamic parameters have been estimated including the enthalpy change (DH 0 ), entropy change (DS 0 ), and Gibbs free energy change (DG 0 ) through using eqn (13) and (14). 20 ln…”

“…Therefore, several methods have been suggested for this purpose such as membrane separation, coagulation, ultra-sonication, photocatalysis, ozonation, biological treatment, and adsorption. [7][8][9][10][11][12][13][14] Among these methods, adsorption was considered to be one of the most efficient techniques for the removal of non-biodegradable contaminants from wastewater owing to its simplicity in operation, high efficiency, economic applicability, scalability, and the availability of numerous adsorbents. 15,16 In this vein, various adsorbent materials including natural and synthesized polymers, zeolites, activated carbons, hydrotalcites, and clays have been proposed for treatment of wastewater from textile dyes.…”

Application of UV absorbance and fluorescence indicators to assess the formation of biodegradable dissolved organic carbon and bromate during ozonation

“…The degradation of DOM during ozonation can occur through either direct reaction with O 3 , or with • OH radical generated during O decomposition (von Gunten 2003a, Wert et al 2009. During the initial ozone demand stage ( Figure S3), ozone reacts directly and selectively with electron-rich moieties, e.g., aromatic chromophores or fluorophores (Chon et al 2015, Wert et al 2009, Wu et al 2016, resulting in the rapid decreases of UV absorbance and fluorescence signals (Figure 2 and Figure 4). Prior research based on ozonation experiments (DOC 1.2-1.4 mg/L, O 3 2 mg/L) performed with and without • OH scavengers confirmed that direct ozone reactions are mainly responsible for the formation of small organic compounds contributing to AOC during the initial ozone demand stage (Hammes et al 2006).…”