Removal of Acidic and Basic Dyes from Water using Crosslinked Polystyrene Based Quaternary Ethyl Piperazine Resin

Purification of phenol-contaminated water by adsorption with quaternized poly(dimethylaminopropyl methacrylamide)-grafted PVBC microspheres

“…Poly(vinylbenzyl chloride) (PVBC) is a typical PS-type synthetic polymer that has been employed in recent years for the synthesis of high-efficient adsorbents for the removal of metal ions or organic pollutants from wastewater 30,31 because the abundant chloromethyl groups of the PVBC surface can serve as anchor sites to introduce specic functional groups, such as amino groups (-NH 2 ), hydroxyl groups (-OH), carboxylate (-COOH), and sulfonic groups (-SO 3 H), for their enhanced adsorption capacity and selectivity of polymeric adsorbents. 32 Different approaches have been reported to prepare PVBC-based adsorbents, including amination of PVBC and subsequent alkaline ion exchange to produce polyvinyl benzyl trimethylammonium hydroxide (PVBTAH)-zeolitic imidazolate framework (ZIF-8), 33 graing of PVBC beads with primary amines, 34,35 amino methane sulfonic acid, 36 proline, 37 aminocarboxylic acid, 38 quaternization of the PVBC microspheres with ethyl piperazine, 39 and N,N-dimethylethanolamine (DMEA). 40 Among these methods, surface-initiated atom transfer radical polymerization (SI-ATRP) provides a versatile approach to precisely prepare functional polymer brushes of narrow polydispersity, well-dened architecture, controllable thickness, and composition.…”

Polycarbodiimide for Textile Dye Removal from Contaminated Water

“…Our results suggest that PCD, which has a nitrogenrich backbone, can attract anionic dyes via electrostatic interactions under acidic conditions, similar to other nitrog e n -r i c h p o l y m e r i c m a t e r i a l s r e p o r t e d e l s ewhere. 10,15,16,18,[23][24][25][26]36,40 Effect of Ionic Strength. Wastewater and the effluents often contain various dissolved salts that increase the ionic strength of the solution.…”

“…Thus, bioremediation at its current state is not a viable option in remediation of the considerable number and volume of chemically distinct dyestuffs in effluents. Some of the materials that are studied for dye adsorption include magnetized particles, , functionalized carbon nanotubes, , metal–organic frameworks, , clay, , nanocomposites, and polymeric materials. ,− Synthetic polymers, due to their versatile structures, ease of synthesis, modification, and production, could enable dye removal from solutions. It is important to note that regeneration and reuse of such materials should be considered to mitigate burden from waste.…”

Identification of the Physicochemical Factors Involved in the Dye Separation via Methionine‐Functionalized Mesoporous Carbons

“…The effects of pH of the dye solutions (pH 2, 4, 7, 10, 12) and temperature (25,45, and 60 °C) of the adsorption processes on the sorption capacities of mesoporous carbons were studied in detail.…”

“…Usually, when both types of dyes are mixed, both of them are adsorbed. For example, Bildik et al [45] proposed the removal of acidic and basic dyes through the usage of crosslinked polystyrene-based quaternary ethyl piperazine resin, where both dyes are adsorbed similarly and simultaneously. Zhao and co-workers [46] presented the separation of basic dyes, that is, rhodamine B, rhodamine 6G, and methylene blue via boron organic polymers.…”