Modification of high content nanocluster-based coagulation for rapid removal of dye from water and the mechanism

Simultaneous removal of poorly biodegradable synthetic dyes and associated suspended particles, like a textile effluent, is a common challenge in the water treatment sector. Herein, a method based on sodium dodecyl sulfate (SDS) as a sorbet to modify fresh aggregate of polycationic nanocluster (Al-30) was developed for the simultaneous removal of dyes and suspension from the water by one-step treatment. The FT-IR, TEM and Zeta potential analysis revealed that dodecyl sulfate (DS) was favorably adsorbed onto the fresh aggregates of Al-30, which was found to follow Langmuir isotherm (R-2 = 0.988) rather than Freundlich model (R-2 = 0.726). The negative Delta G(ads)(0) (-29.3) and R-L value (0.1535), between 0 and 1, further corroborated the spontaneous SDS condensation on the Al-30 aggregates. In the treatment of dye wastewater, the target dyes and turbidity were removed more than 95% at pH 8, concomitant with DS adsorption. The linear relation between X-adm and X-bul (R-2 = 0.99) described the classical partitioning of dyes into the modified surface, which was further confirmed by TEM-EDX investigation and online fluorescence image. The simultaneous removal of concentrated dye and suspension suggests the applicability of this method for a textile and other dye wastewater treatment alternative.

Automated summary

The method utilizes SDS as a sorbet to modify polycationic nanoclusters effectively removing dyes and suspended particles simultaneously in water treatment. Experimental analysis confirmed the efficiency and applicability of this approach for the treatment of dye wastewater.