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Removal of humic acid from aqueous solution using polyacrylamide/chitosan semi-IPN hydrogel.
Water Sci Technol. 2017 Apr; 2017(1):16-26.WS

Abstract

In this study, we provide the first documented removal of humic acid (HA) from aqueous solution using polyacrylamide/chitosan (PAAm/CS) semi-IPN hydrogel. The prepared semi-IPN hydrogel was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The factors effecting HA adsorption performance were individually tested, including initial pH, ionic strength, contact time, initial HA concentration, and temperature. The results indicated that semi-IPN hydrogel was successfully fabricated and can be applied in a wide pH range, from 3 to 9. Low ionic strength effectively enhanced the adsorption capacity. As the ionic strength increased, this enhancement was less obvious but still positive. The adsorption kinetics were fitted to a pseudo-first-order kinetic model, and the adsorption isotherm was described using the Sips isotherm model. The HA adsorption capacity increased with increasing temperature. The maximum adsorption capacity has the potential to attain 166.30 mg g-1, based on the Sips isotherm at 25 °C. Experiments demonstrated that the HA adsorption process can be primarily attributed to electrostatic interactions, and hydrogen bonding was also involved. Facile synthesis and good adsorptive performance indicate that semi-IPN hydrogel can be used for removing HA from water.

Authors+Show Affiliations

School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: zhousqgzas@163.com.School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China E-mail: zhousqgzas@163.com; Guizhou Academy of Sciences, Shanxi Road 1, Guiyang 550001, China; State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China; and Key Laboratory of Environmental protection and Eco-remediation of Guangzhou Regular Higher Education Institutions, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29698217

Citation

Liu, Zejun, and Shaoqi Zhou. "Removal of Humic Acid From Aqueous Solution Using Polyacrylamide/chitosan semi-IPN Hydrogel." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 2017, no. 1, 2017, pp. 16-26.
Liu Z, Zhou S. Removal of humic acid from aqueous solution using polyacrylamide/chitosan semi-IPN hydrogel. Water Sci Technol. 2017;2017(1):16-26.
Liu, Z., & Zhou, S. (2017). Removal of humic acid from aqueous solution using polyacrylamide/chitosan semi-IPN hydrogel. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 2017(1), 16-26. https://doi.org/10.2166/wst.2018.064
Liu Z, Zhou S. Removal of Humic Acid From Aqueous Solution Using Polyacrylamide/chitosan semi-IPN Hydrogel. Water Sci Technol. 2017;2017(1):16-26. PubMed PMID: 29698217.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of humic acid from aqueous solution using polyacrylamide/chitosan semi-IPN hydrogel. AU - Liu,Zejun, AU - Zhou,Shaoqi, PY - 2018/4/27/entrez PY - 2018/4/27/pubmed PY - 2018/8/10/medline SP - 16 EP - 26 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci. Technol. VL - 2017 IS - 1 N2 - In this study, we provide the first documented removal of humic acid (HA) from aqueous solution using polyacrylamide/chitosan (PAAm/CS) semi-IPN hydrogel. The prepared semi-IPN hydrogel was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The factors effecting HA adsorption performance were individually tested, including initial pH, ionic strength, contact time, initial HA concentration, and temperature. The results indicated that semi-IPN hydrogel was successfully fabricated and can be applied in a wide pH range, from 3 to 9. Low ionic strength effectively enhanced the adsorption capacity. As the ionic strength increased, this enhancement was less obvious but still positive. The adsorption kinetics were fitted to a pseudo-first-order kinetic model, and the adsorption isotherm was described using the Sips isotherm model. The HA adsorption capacity increased with increasing temperature. The maximum adsorption capacity has the potential to attain 166.30 mg g-1, based on the Sips isotherm at 25 °C. Experiments demonstrated that the HA adsorption process can be primarily attributed to electrostatic interactions, and hydrogen bonding was also involved. Facile synthesis and good adsorptive performance indicate that semi-IPN hydrogel can be used for removing HA from water. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/29698217/Removal_of_humic_acid_from_aqueous_solution_using_polyacrylamide/chitosan_semi_IPN_hydrogel_ L2 - https://iwaponline.com/wst/article-lookup/doi/10.2166/wst.2018.064 DB - PRIME DP - Unbound Medicine ER -