Adsorption Studies of Lactic Acid by Polymeric Adsorbent Amberlite XAD-7: Equilibrium and Kinetics

Uslu, Hasan; Majumder, Subhajit

doi:10.1021/acs.jced.6b01062

Cited by 19 publications

(9 citation statements)

References 20 publications

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“…The affinity of these two basic resins towards five different carboxylic acids (pivalic, methacrylic, propionic, butyric, and isobutyric acid) that are of interest to enhance solubility properties and film formation capability of MOCs was evaluated by means of 1 H NMR. To do so, the change of concentration of the acid in a solution of deuterated chloroform after adding the corresponding resin (1:1 molar ratio of amine on resin/acid) was used to calculate the equilibrium adsorption, q e ,, as:…”

Section: Resultsmentioning

confidence: 99%

Hybrid EUV Resists with Mixed Organic Shells: A Simple Preparation Method

Liu

Vockenhuber

et al. 2019

Eur J Inorg Chem

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Metal‐containing molecular hybrid compounds, such as metal oxoclusters (MOCs), are promising materials for extreme ultraviolet (EUV) lithography. The solubility, processability, and reactivity towards EUV photons in these compounds are mostly determined by the composition of their organic shells. Therefore, gaining molecular control on the composition of the shell is crucial to tune their lithographic performance of sensitivity, resolution, and line‐edge roughness. In this work, a new method to prepare MOCs that feature two types of carboxylate ligands is presented. In this method, amine‐functionalized resins are used for the purification step. By using this protocol, Ti‐ and Zr‐based MOCs with mixed‐ligands organic shells were synthesized. The new compounds showed clear differences in the processability and sensitivity as EUV resists compared to their analogues featuring only one type of ligand. The results validate this new synthetic approach for the preparation of custom‐made EUV resists towards better lithographic performance.

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Section: Resultsmentioning

confidence: 99%

Hybrid EUV Resists with Mixed Organic Shells: A Simple Preparation Method

Liu

Vockenhuber

et al. 2019

Eur J Inorg Chem

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“…where α is the initial adsorption rate of the Elovich equation (mg•g −1 min −1 ) and β is the adsorption constant of the model (g•mg −1 ) [15]; it is related to the adsorption energy [23]. e Elovich equation can be linearized by assuming αβt >> t and that Q � 0 at t � 0 and that Q � Q t for a time t � t t [24]. Under these conditions, a graph of q t versus ln (t) shows a linear relationship with a slope of (1/β) and an intercept of (1/β) ln (αβ) [15].…”

Section: Elovich Modelmentioning

confidence: 99%

Kinetic Study of the Bioadsorption of Methylene Blue on the Surface of the Biomass Obtained from the Algae D. antarctica

Guarín

Moreno-Piraján

Giraldo

2018

Journal of Chemistry

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Currently, there is a great pollution of water by the dyes; due to this, several studies have been carried out to remove these compounds. However, the total elimination of these pollutants from the aquatic effluents has represented a great challenge for the scientific community, for which it is necessary to carry out investigations that allow the purification of water. In this work, we studied the bioadsorption of methylene blue on the surface of the biomass obtained from the algae D. antarctica. This material was characterized by SEM and FTIR. To the data obtained in the biosorption experiments, different models of biosorption and kinetics were applied, finding that the best fit to the obtained data is given by applying the pseudo-second-order models and the Toth model, respectively. It was also determined that the maximum adsorption capacity of MB on the surface of the biomass is 702.9 mg/g, which shows that this material has great properties as a bioadsorbent.

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“…The linear relation of the Elovich equation was obtained if αβt >> t and that q = qt for a time t = tt and q = 0 at t = 0 [70]. If plot qt against ln(t) (Fig.…”

Section: Equilibrium Adsorption Isothermmentioning

confidence: 99%

High Performance of Multifunctional Cotton Fabrics Modified with TiO2, Fe, Ag-doped TiO2 and Graphene Oxide Nanomaterials towards Antimicrobial and Adsorption Removal of Methylene Blue Dye

Khairy¹,

Kamal²,

Mouśa³

2021

Preprint

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Multifunctional cotton textile nanocomposites are well developed by the functionalization of cotton with pure TiO2, Ag-, Fe-doped TiO2, and graphene oxide nanoparticles via sol-gel and modified Hummer methods. The treated fabrics materials are investigated by XRD, FT-IR, and SEM. The obtained treated fabrics have been used as an adsorbent for the methylene blue dye removal from aqueous solution. The functionalized cotton fabrics are tested for antimicrobial capability towards Escherichia coli, Bacillus cereus, and Candida albicans. All functionalized fabrics have higher antimicrobial activity compared to untreated cotton especially the fabrics containing silver and Fe doped TiO2. The optimum conditions of the adsorption process are determined via the study of the effect of the initial concentration of dye, pH, and contact time on the removal efficiency. Langmuir, Freundlich, and Tempkin isotherms are applied for the equilibrium adsorption data. GO-Cot and Ag-Ti@GO-Cot samples showed the highest adsorption removal activity. The linear correlation coefficient (R2) showed that the Temkin model well fitted the data of adsorption on the GO-Cot sample. The analysis of experimental data with different kinetic models showed that the pseudo-second-order kinetic model well fitted the adsorption data better than the other kinetic models of pseudo-first-order, Elovich, and the intra-particle diffusion.

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Adsorption Studies of Lactic Acid by Polymeric Adsorbent Amberlite XAD-7: Equilibrium and Kinetics

Cited by 19 publications

References 20 publications

Hybrid EUV Resists with Mixed Organic Shells: A Simple Preparation Method

Hybrid EUV Resists with Mixed Organic Shells: A Simple Preparation Method

Kinetic Study of the Bioadsorption of Methylene Blue on the Surface of the Biomass Obtained from the Algae D. antarctica

High Performance of Multifunctional Cotton Fabrics Modified with TiO2, Fe, Ag-doped TiO2 and Graphene Oxide Nanomaterials towards Antimicrobial and Adsorption Removal of Methylene Blue Dye

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