1 research outputs found
A Flocculation–Adsorption Self-Coupled System for Wastewater Treatment with the Aim of Water Reuse
In this work, a unique flocculation–adsorption
self-coupled
system with a tunable coupling ratio is constructed based on an ultra-salt-sensitive
polymer (USSP). USSP exhibits unique ultra-salt-sensitive properties,
and distinct phase transition can be observed at a very low salt concentration
of 30 g/L, which provides a straightforward strategy for coupling
flocculation and adsorption processes. The self-coupling ratio between
flocculation and adsorption can be finely controlled by adjusting
the external stimuli. USSP shows a high adsorption capacity for the
anionic dye (991.7 mg/g) in a short contact time (5 min) through the
unique self-coupled flocculation–adsorption mechanism. More
importantly, stimulus-triggered self-cleaning behavior of USSP can
be achieved by a flocculation–adsorption self-coupled system,
thereby minimizing the residual flocculant in treated water. Wastewater
and salt can be easily reclaimed and reused for three cycles without
any post-processing, which minimizes the total salt and water consumption
in the textile dyeing industry