An amine-rich porous organic polymer with flexible diarylmethane moieties for adsorptive removal of anionic dyes

Abstract

Developing porous organic polymers (POPs) as efficient adsorbents for wastewater treatment ‎began a new era in environmental remediation. In the current paper, an amine-rich triazine-based POP ‎with excellent flexibility, marked...

Polyethyleneimine-functionalized β-cyclodextrin porous polymers for enhanced elimination of U(vi) from wastewater

“…To learn about the adsorption mechanism of PCDP and PEI-PCDP, three dynamic models (the quasi-first-order model, quasi-second-order model, and Elovich model) were employed to investigate the adsorption behavior of PCDP and PEI-PCDP, and the calculation process is shown via eqn (3)–(5). 34,50 ln( q e − q t ) = ln q e − k 1 t where, t is the adsorption time, k 1 (min −1 ) and k 2 (g mg −1 min −1 ) are the rate constants of the quasi-first and second-order kinetic models, respectively. α (mg g −1 min −1 ) and β (g mg −1 ) are the initial adsorption rate and desorption parameters of the Elovich model, respectively.…”

“…The removal rate ( R r , %) and the equilibrium absorption quantity ( q e , mg g −1 ) were calculated using the following equation. 28,33,34 where, C 0 (mg L −1 ) and C e (mg L −1 ) are the initial concentration and the equilibrium concentration of U( vi ), respectively. V (mL) and m (mg) are the volume of the U( vi ) solution and the weight of the adsorbent, respectively.…”

“…The removal rate (R r , %) and the equilibrium absorption quantity (q e , mg g À1 ) were calculated using the following equation. 28,33,34 R r ð%Þ ¼…”

“…To learn about the adsorption mechanism of PCDP and PEI-PCDP, three dynamic models (the quasi-first-order model, quasi-second-order model, and Elovich model) were employed to investigate the adsorption behavior of PCDP and PEI-PCDP, and the calculation process is shown via eqn (3)-( 5). 34,50 ln(q e À q t ) = ln q e À k 1 t…”

Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

“…Chitosan modified with activated carbon 5.99 [58] Sewage sludge 25.1 [59] Triazine based porous organic polymer 71.43 [60] Clay-chitosan composite 80.9 [61] Functionalized two-tier nanocomposite membrane 182.5 [62] Porous sheet from nylon fiber waste 188 [63] RBT…”