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Phenol removal from wastewater using eco‐friendly hybrid hydrogels
Author(s) -
Dutra Mariana Alves Leite,
Marques Nívia do Nascimento,
Souza Filho Men de Sá Moreira de,
Balaban Rosangela de Carvalho
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50725
Subject(s) - freundlich equation , adsorption , self healing hydrogels , phenol , langmuir adsorption model , desorption , wastewater , polyacrylamide , langmuir , chemical engineering , chemistry , chromatography , materials science , organic chemistry , polymer chemistry , environmental engineering , environmental science , engineering
The intent of this study was to evaluate the ability of low‐cost polyacrylamide/starch hybrid hydrogels in removing organic pollutants from wastewater, using phenol as a model compound, besides of investigating the adsorption/desorption behavior as a function of hydrogels composition. The results indicated that the hydrogel with the lowest amount of starch and crosslinking agent exhibited the maximum phenol adsorption capacity, 21 mg g −1 . The adsorption isotherm data were described by Langmuir and Freundlich adsorption isotherm models. According to linear regression analysis, the Freundlich isotherm model was the best fit among the isotherm models for the adsorption process. Furthermore, desorption study revealed a minimum of about 60% of phenol release, indicating reusability to wastewater treatment.