Study on Enhancement Adsorption of Pipemidic Acid from Aqueous Solution by Using an Amino Group Modified Hypercrosslinked Polymeric Adsorbents

Jiang Quan Ma; Jun Hao Xia; Qing Ling Lu; Peng Xiang Shi; Lu De Lu; Xin Wang

doi:10.4028/www.scientific.net/AMR.468-471.1239

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 468-471Study on Enhancement Adsorption of Pipemidic Acid...

Study on Enhancement Adsorption of Pipemidic Acid from Aqueous Solution by Using an Amino Group Modified Hypercrosslinked Polymeric Adsorbents

Abstract:

In the present study, an amino group modified hypercrosslinked polymeric adsorbent RDM-200 was prepared and its ability to adsorb pipemidic acid from aqueous solution was tested by using Amberlite XAD-4 as a comparison. Pipemidic acid adsorption isotherm onto RDM-200 is well described by the Freundlich model. The RDM-200 adsorption capacity for PPA was about 510.5 mg/g at 293 K, exhibited larger uptake and stronger affinity of pipemidic acid than XAD-4. The adsorption thermodynamic parameters were calculated and the adsorption was an exothermic, favorable, and more ordered process. The RDM-200 spontaneously adsorbs pipemidic acid mainly by both entropy change and enthalpy change. The RDM-200 exhibited excellent adsorption ability over the pH range 6-10, NaCl showed the positive effect.

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Periodical:

Advanced Materials Research (Volumes 468-471)

Pages:

1239-1242

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.468-471.1239

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Online since:

February 2012

Authors:

Jiang Quan Ma, Jun Hao Xia, Qing Ling Lu, Peng Xiang Shi, Lu De Lu, Xin Wang

Keywords:

Adsorption, Amino Modified, Hypercrosslinked Polymeric Adsorbents, Pipemidic Acid

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