Cargando…

Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study

This study performs an appraisal of the adsorptive capacity of amidoxime-modified poly(acrylonitrile-co-acrylic acid) or abbreviated as (AO-modified poly(AN-co-AA)) for the p-nitrophenol (PNP) adsorption, from aquatic environments via batch system. The AO-modified poly(AN-co-AA) polymer was develope...

Descripción completa

Detalles Bibliográficos
Autores principales: Ezzuldin M. Saber, Shihab, Md Jamil, Siti Nurul Ain, Abdullah, Luqman Chuah, Choong, Thomas Shean Yaw, Ming Ting, Teo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8695099/
https://www.ncbi.nlm.nih.gov/pubmed/35423311
http://dx.doi.org/10.1039/d0ra10910j
_version_ 1784619507035144192
author Ezzuldin M. Saber, Shihab
Md Jamil, Siti Nurul Ain
Abdullah, Luqman Chuah
Choong, Thomas Shean Yaw
Ming Ting, Teo
author_facet Ezzuldin M. Saber, Shihab
Md Jamil, Siti Nurul Ain
Abdullah, Luqman Chuah
Choong, Thomas Shean Yaw
Ming Ting, Teo
author_sort Ezzuldin M. Saber, Shihab
collection PubMed
description This study performs an appraisal of the adsorptive capacity of amidoxime-modified poly(acrylonitrile-co-acrylic acid) or abbreviated as (AO-modified poly(AN-co-AA)) for the p-nitrophenol (PNP) adsorption, from aquatic environments via batch system. The AO-modified poly(AN-co-AA) polymer was developed with redox polymerization, and then altered by using hydroxylamine hydrochloride (HH). Tools used to describe the physicochemical and morphological characteristics of the AO-modified poly(AN-co-AA) were Fourier transform infrared (FTIR) spectroscopy, CHN elemental analysis, X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The adsorption kinetics were examined by pseudo-first order, pseudo-second order, Elovich and intraparticle diffusion kinetic models. Meanwhile, the isotherms were investigated by Langmuir, Freundlich, Temkin and Redlich–Peterson models. It was found that the adsorption was best fitted with pseudo-second order, and agreed with both Langmuir and Freundlich isotherm models. It was described best with the Freundlich isotherm due to highest R(2) (0.999). The maximum adsorption capacity was 143.06 mg g(−1) at 298 K, and thermodynamic functions showed that the adsorption process was exothermic. Also, following five regeneration cycles, the adsorbent recorded 71.7% regeneration efficiency. The finding in this study indicates that the AO-modified poly(AN-co-AA) is an effective adsorbent to remove PNP from an aqueous solution.
format Online
Article
Text
id pubmed-8695099
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-86950992022-04-13 Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study Ezzuldin M. Saber, Shihab Md Jamil, Siti Nurul Ain Abdullah, Luqman Chuah Choong, Thomas Shean Yaw Ming Ting, Teo RSC Adv Chemistry This study performs an appraisal of the adsorptive capacity of amidoxime-modified poly(acrylonitrile-co-acrylic acid) or abbreviated as (AO-modified poly(AN-co-AA)) for the p-nitrophenol (PNP) adsorption, from aquatic environments via batch system. The AO-modified poly(AN-co-AA) polymer was developed with redox polymerization, and then altered by using hydroxylamine hydrochloride (HH). Tools used to describe the physicochemical and morphological characteristics of the AO-modified poly(AN-co-AA) were Fourier transform infrared (FTIR) spectroscopy, CHN elemental analysis, X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The adsorption kinetics were examined by pseudo-first order, pseudo-second order, Elovich and intraparticle diffusion kinetic models. Meanwhile, the isotherms were investigated by Langmuir, Freundlich, Temkin and Redlich–Peterson models. It was found that the adsorption was best fitted with pseudo-second order, and agreed with both Langmuir and Freundlich isotherm models. It was described best with the Freundlich isotherm due to highest R(2) (0.999). The maximum adsorption capacity was 143.06 mg g(−1) at 298 K, and thermodynamic functions showed that the adsorption process was exothermic. Also, following five regeneration cycles, the adsorbent recorded 71.7% regeneration efficiency. The finding in this study indicates that the AO-modified poly(AN-co-AA) is an effective adsorbent to remove PNP from an aqueous solution. The Royal Society of Chemistry 2021-02-19 /pmc/articles/PMC8695099/ /pubmed/35423311 http://dx.doi.org/10.1039/d0ra10910j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Ezzuldin M. Saber, Shihab
Md Jamil, Siti Nurul Ain
Abdullah, Luqman Chuah
Choong, Thomas Shean Yaw
Ming Ting, Teo
Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
title Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
title_full Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
title_fullStr Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
title_full_unstemmed Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
title_short Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
title_sort insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8695099/
https://www.ncbi.nlm.nih.gov/pubmed/35423311
http://dx.doi.org/10.1039/d0ra10910j
work_keys_str_mv AT ezzuldinmsabershihab insightsintothepnitrophenoladsorptionbyamidoximemodifiedpolyacrylonitrilecoacrylicacidcharacterizationkineticsisothermthermodynamicregenerationandmechanismstudy
AT mdjamilsitinurulain insightsintothepnitrophenoladsorptionbyamidoximemodifiedpolyacrylonitrilecoacrylicacidcharacterizationkineticsisothermthermodynamicregenerationandmechanismstudy
AT abdullahluqmanchuah insightsintothepnitrophenoladsorptionbyamidoximemodifiedpolyacrylonitrilecoacrylicacidcharacterizationkineticsisothermthermodynamicregenerationandmechanismstudy
AT choongthomassheanyaw insightsintothepnitrophenoladsorptionbyamidoximemodifiedpolyacrylonitrilecoacrylicacidcharacterizationkineticsisothermthermodynamicregenerationandmechanismstudy
AT mingtingteo insightsintothepnitrophenoladsorptionbyamidoximemodifiedpolyacrylonitrilecoacrylicacidcharacterizationkineticsisothermthermodynamicregenerationandmechanismstudy