Physicochemical Interactions in Systems C.I. Direct Yellow 50—Weakly Basic Resins: Kinetic, Equilibrium, and Auxiliaries Addition Aspects

Abstract

Intensive development of many industries, including textile, paper or plastic, which consume large amounts of water and generate huge amounts of wastewater-containing toxic dyes, contribute to pollution of the aquatic environment. Among many known methods of wastewater treatment, adsorption techniques are considered the most effective. In the present study, the weakly basic anion exchangers such as Amberlyst A21, Amberlyst A23 and Amberlyst A24 of the polystyrene, phenol-formaldehyde and polyacrylic matrices were used for C.I. Direct Yellow 50 removal from aqueous solutions. The equilibrium adsorption data were well fitted to the Langmuir adsorption isotherm. Kinetic studies were described by the pseudo-second order model. The pseudo-second order rate constants were in the range of 0.0609–0.0128 g/mg·min for Amberlyst A24, 0.0038–0.0015 g/mg·min for Amberlyst A21 and 1.1945–0.0032 g/mg·min for Amberlyst A23, and decreased with the increasing initial concentration of dye from 100–500 mg/L, respectively. There were observed auxiliaries (Na2CO3, Na2SO4, anionic and non-ionic surfactants) impact on the dye uptake. The polyacrylic resin Amberlyst A24 can be promising sorbent for C.I. Direct Yellow 50 removal as it is able to uptake 666.5 mg/g of the dye compared to the phenol-formaldehyde Amberlyst A23 which has a 284.3 mg/g capacity.

New Aspects of Occurrence and Removal of Emerging Pollutants

“…This work concerns the use of adsorption to remove dye from wastewater from the textile industry [10]. The use of weakly basic anion exchangers for this purpose was subjected to physicochemical and thermodynamic tests.…”

“…The occurrence characteristics were presented in particular for compounds from the group of pharmaceuticals and personal care products (PPCPs) [6]. Other published studies focused on the removal of EPs by biological (phytoremediation) [7,8] as well as chemical (oxidation) [9] and physical (sorption and reverse osmosis) methods [10,11]. Twenty authors from five countries (Poland, Korea, Argentina, Portugal, and Peru) comprised their contribution in the preparation of the published papers.…”

Modification Strategies of Kapok Fiber Composites and Its Application in the Adsorption of Heavy Metal Ions and Dyes from Aqueous Solutions: A Systematic Review

“…Dyes are classified as either synthetic or natural chemical substances that are used to provide color to numerous substrates such as waxes, leather, fur, plastics, cosmetics, greases, and textile materials [ 4 , 17 ]. Because of their complex and large molecular structures, dye molecules remain in bodies of water for a long time, resisting degradation by natural mechanisms such as microbial interactions and sunlight [ 18 ].…”

C.I. Basic Red 46 Removal from Sewage by Carbon and Silica Based Composite: Equilibrium, Kinetic and Electrokinetic Studies

“…The effects of surfactants with different ionic character on the dye adsorption were examined in our previous papers. It was proved that surface active substances affect the adsorption of dyes, influencing their removal from aqueous solutions [ 9 , 23 , 24 ]. For this reason, it is important to know their impact on the mechanism of removal of other undesirable and toxic substances, which may contribute to the development of more effective methods of their disposal.…”