PH-responsive chitosan-based flocculant for precise dye flocculation control and the recycling of textile dyeing effluents.

ABSTRACT: In this work, we introduce a simple and effective method for the controlled release of dye from dye saturation flocs by a well-designed pH responsive chitosan-based flocculant. The dye flocculation capacities could be precisely controlled from 0.5 to 2 g g^-1 by simply adjusting the pH of the desorption solution. A series of flocs with different dye flocculation capacities was prepared and used as nitrogen-rich precursors to prepare nitrogen-doped carbon materials through one-step carbonization. The results demonstrate that the specific surface areas, pore structures and supercapacitance performance of the resulting N-doped carbon materials could be readily controlled by varying the dye flocculation capacity. By using a dye sludge floc with an appropriate dye flocculation capacit

SUBMITTER: Wei T 

PROVIDER: S-EPMC9090722 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature