Synthesis and application of diethanolamine-functionalized polystyrene as a new sorbent for the removal of p-toluenesulfonic acid from aqueous solution

Davarpanah, Morteza; Ahmadpour, Ali; Rohani-Bastami, Tahereh; Dabir, Hossein

doi:10.1016/j.jiec.2015.05.034

Cited by 13 publications

(3 citation statements)

References 43 publications

(50 reference statements)

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“…In addition, PTSA is toxic and has a low degradation rate and high water solubility (0.67 kg L −1 ), thus would not be the most sustainable choice of Brønsted acid or organocatalyst for these reactions. [48][49][50] When conducting the same reactions at an elevated temperature and under pressure in an autoclave (Table 4), aniline in the presence of PTSA exhibited high selectivity towards monomethylation, which was consistent with previous reports. 51 However, dibutylamine in the presence of 0.5 eq.…”

Section: Selectivity Of Brønsted Acid-mediated Reactions Of Dmc With ...supporting

confidence: 89%

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Acid-catalysed reactions of amines with dimethyl carbonate

et al. 2023

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Section: Selectivity Of Brønsted Acid-mediated Reactions Of Dmc With ...supporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Acid-catalysed reactions of amines with dimethyl carbonate

et al. 2023

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“…Among these methods, adsorption is generally considered an effective process to remove organic pollutants and purify contaminated water due to its simplicity, rapidity, and low cost. Therefore, many adsorbents such as activated carbon, silica, modified fiber, chitosan, and polymeric resin have been used for wastewater treatment [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Functional Group Density of Anion Exchange Resins on Removal of p-Toluene Sulfonic Acid from Aqueous Solution

Sun

Zheng

et al. 2019

Applied Sciences

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Adsorption using anion exchange resins is an efficient method for the removal of aromatic sulfonic acids (ASAs) from industrial wastewater. In this study, a series of weak-base anion exchangers (SD1–SD5) were synthesized to investigate the effect of functional group density of resins on the adsorption of ASAs from wastewater containing competitive inorganic anions. p-Toluene sulfonic acid (PTSA) was selected as a target pollutant, and Na2SO4 was chosen as the competitive inorganic salt because of its widespread existence in industrial wastewater. Adsorption performances of these resins were evaluated and compared in terms of selectivity, kinetics, isotherms, regeneration, and dynamic adsorption behavior. Importantly, the PTSA uptake increased with the raising content of functional groups on resins in the absence of Na2SO4; however, in the presence of a high level of Na2SO4 (for example, ≥1%), a decrease in the functional group density could improve the adsorption capacity of resins for PTSA. Moreover, desorption and fixed bed column experiments were conducted in all resins, thereby confirming the effect of functional group density of resins on the PTSA adsorption in actual application. In brief, this research will provide a better understanding for the design and preparation of anion exchangers for the effective removal of ASA from wastewater.

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