Strongly basic anion exchanger Lewatit MonoPlus SR-7 for acid, reactive, and direct dyes removal from wastewaters

Wawrzkiewicz, Monika; Hubicki, Zbigniew; Polska-Adach, Ewelina

doi:10.1080/01496395.2017.1293098

Cited by 13 publications

(7 citation statements)

References 33 publications

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“…Adsorption methods are considered to be highly effective in the industrial effluents treatment technologies. Currently, the most important adsorbents used for this purpose are: activated carbons (Deryło-Marczewska et al 2010;Bazan-Woźniak et al 2017 and carbonaceous sorbents (Nowicki et al 2016), anion exchange resins (Wawrzkiewicz et al 2017c), hybrid materials (Wawrzkiewicz et al 2017a), low-cost substances (Janoš and Šmidová 2005), and agroindustry wastes (Garg et al 2004). The search for not only cheap but also selective adsorbents with a significant sorption capacity is a serious challenge for scientists.…”

Section: Introductionmentioning

confidence: 99%

Nanosized silica–titanium oxide as a potential adsorbent for C.I. Acid Yellow 219 dye removal from textile baths and wastewaters

et al. 2018

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The mixed SiO 2 -TiO 2 oxide obtained by the pyrogenic method with the silica:titanium percentage ratio equal to 80:20 (ST20) was used as a potential adsorbent for the removal of hazardous azo dye C.I. Acid Yellow 219 (AY219) from aqueous solutions. Based on the values of determination coefficients (r 2 ), it can be stated that the Freundlich (r 2 = 0.929) model fitted the experimental data better than the Langmuir (r 2 = 0.920) and Tempkin (r 2 = 0.848) ones. In the system containing 20 mg/L AY219, the amount of dye adsorbed (q t ) by ST20 was equal to 9.7 mg/g and the time necessary to reach equilibrium was 120 min. The sorption of AY219 on ST20 may be described by the pseudo-second-order model (r 2 = 0.999) as the adsorption capacity was calculated as 9.69 mg/g. The amount of AY219 adsorbed decreased with the increasing concentration of additives such as anionic and non-ionic (Triton X-100) surfactants. In the presence of cationic surfactant, the reverse dependence was observed. Anionic dye additions influence the structure of electrical double layer formed on the surface of mixed oxide particles. The presence of negative charges in adsorbed AY219 molecules results in increase of the solid surface charge density with simultaneous decrease of the zeta potential of ST20 particles. The addition of surfactants with different ionic character causes formation of complexes whose presence at the mixed oxide-liquid interface influences considerably both the solid surface charge density and the zeta potential of ST20 particles dispersed in aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Nanosized silica–titanium oxide as a potential adsorbent for C.I. Acid Yellow 219 dye removal from textile baths and wastewaters

et al. 2018

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“…Direct Red 75 on the weakly and strongly basic gel resins of polyacrylic skeletons such as Amberlite IRA 67 and Amberlite IRA 458. Research conducted by Wawrzkiewicz et al [49] concerning DY50 removal using the polyacrylic (Amberlite IRA478, Amberlite IRA958) and polystyrene (Lewatit MonoPlus MP68, Amberlite IRA900) anion exchange resins of different basicity of functionalities as well as non-functionalized polymeric resins of polyacrylic and polystyrene matrices (Amberlite XAD7, Lewatit VPOC1064) confirm that this process depends on the composition and the structure of the anion exchanger. The highest sorption capacity towards DY50 was exhibited by the polyacrylic anion exchanger Amberlite IRA 958 of the quaternary ammonium functional groups and it was 534.8 mg/g.…”

Section: Langmuir Isothermmentioning

confidence: 90%

“…The use of a given ion exchanger depends on the type of its functional groups which are responsible for ion exchange and determine the optimum efficiency of a given resin at various pH levels. In a large group of ion exchangers, anion exchangers with different basicity of functional groups found the largest practical application in the sorption process of acid, direct and reactive dyes [48][49][50][51]. Other important parameters affecting the efficiency of dye retention are matrix composition (polyacrylic, polystyrene, phenol formaldehyde) and porosity.…”

Section: Introductionmentioning

confidence: 99%

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

Wawrzkiewicz

Polska-Adach

2021

Water

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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.

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“…The dye aqueous solutions were set at 500 mg/L, and the adsorbent dosage was 2 g/L. The effects of solution pH (3)(4)(5)(6)(7)(8)(9)(10)(11), salt (NaCl, 1-4 g/L), surfactant (dodecyltrimethylammonium chloride (DTAC), 1 g/L) and temperature (293-333 K) on adsorption were studied. Each sample was shaken for 2 h. The final solutions were determined by a UV-VIS spectrophotometer (Shimadzu, Kyoto, Japan), and their dye concentrations were calculated according to the standard curves.…”

Section: Equilibrium Adsorption Of Dyesmentioning

confidence: 99%

“…The adsorption method is the most commonly used decolorization technology in wastewater treatment, and it has the advantages of simple operation, low cost, and excellent removal effects on almost any dye [ 3 , 4 , 5 ]. To date, different types of micro- and mesoporous adsorbents have been reported for removing dyes from aqueous solutions, including activated carbon [ 6 ], minerals [ 7 ], agricultural wastes [ 8 ], ion exchange resins [ 9 , 10 ], and organic/inorganic composites [ 11 ]. Nevertheless, many absorbing materials have the disadvantages of lower adsorption performance or higher price.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Attapulgite by Grafting Cationic Polymers for Treating Dye Wastewaters

Guo

Xia

Cao³

et al. 2021

Materials

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In this study, the cationic polymer poly-epichlorohydrin-dimethylamine was immobilized on natural attapulgite to improve the dye adsorption capacities. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, nitrogen adsorption-desorption isotherms, scanning electron microscope (SEM) analysis, zeta potential analysis, and particle size analysis were used to determine the characteristics of modified attapulgite. Results showed that the poly-epichlorohydrin-dimethylamine had been successfully grafted onto the surface of attapulgite without altering its crystal structure. After cationic modification, the specific surface area of attapulgite obviously decreased, and its surface zeta potentials possessed positive values in the pH range from 3 to 11. The cation-modified attapulgite displayed high adsorption capacities for anionic dyes, and its maximum adsorption capacities were 237.4 mg/g for Reactive Black 5 and 228.3 mg/g for Reactive Red 239; this is corroborated by Langmuir’s isotherm studies. It was demonstrated that the two reactive dyes could be 100% removed from effluents when cation-modified attapulgite was used in column operation modes. Its treatment capacities were more than three times larger than that of activated carbon. The regeneration study verified better utilization and stability of the fabricated adsorbent in column operation. This work has conclusively confirmed the potential of the new modified attapulgite for effectively treating dye wastewaters.

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Strongly basic anion exchanger Lewatit MonoPlus SR-7 for acid, reactive, and direct dyes removal from wastewaters

Cited by 13 publications

References 33 publications

Nanosized silica–titanium oxide as a potential adsorbent for C.I. Acid Yellow 219 dye removal from textile baths and wastewaters

Nanosized silica–titanium oxide as a potential adsorbent for C.I. Acid Yellow 219 dye removal from textile baths and wastewaters

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

Surface Modification of Attapulgite by Grafting Cationic Polymers for Treating Dye Wastewaters

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