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Effective removal of heavy metals by nanosized hydrous zirconia composite hydrogel and adsorption behavior study.
Environ Sci Pollut Res Int. 2018 Nov; 25(33):33464-33477.ES

Abstract

A novel type of adsorbent, hydrous zirconium oxide (HZO) based on polymer hydrogel (HZO-P(TAA/HEA) hydrogel), was synthesized by irradiation polymerization and in situ precipitation methods to remove heavy metals from water efficiently. The composite hydrogel was characterized using scanning electron microscope (SEM), transmission electron microscope (TEM), swelling kinetics, zeta potential, X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectra (FTIR), and X-ray photoelectron spectroscopy (XPS). The results indicated that HZO nanoparticles were stably loaded on the P(TAA/HEA) hydrogel, swelling properties, and thermal stability were also enhanced after the loading of HZO. Besides, the batch adsorption experiments revealed that adsorption time, pH, initial concentration of heavy metals, and coexisting ions influenced the adsorption process significantly. The adsorption capacities of HZO-P(TAA/HEA) hydrogel for Pb2+, Cu2+, Cd2+, and Ni2+ was 0.620 mmol g-1, 0.615 mmol g-1, 0.701 mmol g-1, and 0.700 mmol g-1, respectively. The adsorption isotherms fitted Langmuir equation well, and the adsorption kinetics followed second-order kinetics; it was manifested that the priority of competitive adsorption followed the order: Pb2+ > Cu2+ > Ni2+ > Cd2+. Furthermore, based on the analysis results of FTIR and XPS, the adsorption mechanism could mainly be the complexation between hydrous zirconia and heavy metals. The results indicate that nanocomposite HZO-P(TAA/HEA) hydrogel is a promising heavy metal adsorbent.

Authors+Show Affiliations

State Key Laboratory of Pollutant Control and Resource Reuse, Nanjing, 210023, China. School of the Environment, Nanjing University, Nanjing, 210023, China.State Key Laboratory of Pollutant Control and Resource Reuse, Nanjing, 210023, China. School of the Environment, Nanjing University, Nanjing, 210023, China.State Key Laboratory of Pollutant Control and Resource Reuse, Nanjing, 210023, China. zhkuili@nju.edu.cn. School of the Environment, Nanjing University, Nanjing, 210023, China. zhkuili@nju.edu.cn.State Key Laboratory of Pollutant Control and Resource Reuse, Nanjing, 210023, China. School of the Environment, Nanjing University, Nanjing, 210023, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30267341

Citation

Yang, Jianhua, et al. "Effective Removal of Heavy Metals By Nanosized Hydrous Zirconia Composite Hydrogel and Adsorption Behavior Study." Environmental Science and Pollution Research International, vol. 25, no. 33, 2018, pp. 33464-33477.
Yang J, Chu Y, Li Z, et al. Effective removal of heavy metals by nanosized hydrous zirconia composite hydrogel and adsorption behavior study. Environ Sci Pollut Res Int. 2018;25(33):33464-33477.
Yang, J., Chu, Y., Li, Z., & Zhang, Y. (2018). Effective removal of heavy metals by nanosized hydrous zirconia composite hydrogel and adsorption behavior study. Environmental Science and Pollution Research International, 25(33), 33464-33477. https://doi.org/10.1007/s11356-018-3273-7
Yang J, et al. Effective Removal of Heavy Metals By Nanosized Hydrous Zirconia Composite Hydrogel and Adsorption Behavior Study. Environ Sci Pollut Res Int. 2018;25(33):33464-33477. PubMed PMID: 30267341.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effective removal of heavy metals by nanosized hydrous zirconia composite hydrogel and adsorption behavior study. AU - Yang,Jianhua, AU - Chu,Yangyang, AU - Li,Zhengkui, AU - Zhang,Yipin, Y1 - 2018/09/28/ PY - 2018/07/10/received PY - 2018/09/18/accepted PY - 2018/9/30/pubmed PY - 2019/1/18/medline PY - 2018/9/30/entrez KW - Adsorption mechanism KW - Heavy metals KW - Hydrous zirconia KW - Nanocomposite hydrogel SP - 33464 EP - 33477 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 33 N2 - A novel type of adsorbent, hydrous zirconium oxide (HZO) based on polymer hydrogel (HZO-P(TAA/HEA) hydrogel), was synthesized by irradiation polymerization and in situ precipitation methods to remove heavy metals from water efficiently. The composite hydrogel was characterized using scanning electron microscope (SEM), transmission electron microscope (TEM), swelling kinetics, zeta potential, X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectra (FTIR), and X-ray photoelectron spectroscopy (XPS). The results indicated that HZO nanoparticles were stably loaded on the P(TAA/HEA) hydrogel, swelling properties, and thermal stability were also enhanced after the loading of HZO. Besides, the batch adsorption experiments revealed that adsorption time, pH, initial concentration of heavy metals, and coexisting ions influenced the adsorption process significantly. The adsorption capacities of HZO-P(TAA/HEA) hydrogel for Pb2+, Cu2+, Cd2+, and Ni2+ was 0.620 mmol g-1, 0.615 mmol g-1, 0.701 mmol g-1, and 0.700 mmol g-1, respectively. The adsorption isotherms fitted Langmuir equation well, and the adsorption kinetics followed second-order kinetics; it was manifested that the priority of competitive adsorption followed the order: Pb2+ > Cu2+ > Ni2+ > Cd2+. Furthermore, based on the analysis results of FTIR and XPS, the adsorption mechanism could mainly be the complexation between hydrous zirconia and heavy metals. The results indicate that nanocomposite HZO-P(TAA/HEA) hydrogel is a promising heavy metal adsorbent. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30267341/Effective_removal_of_heavy_metals_by_nanosized_hydrous_zirconia_composite_hydrogel_and_adsorption_behavior_study_ L2 - https://dx.doi.org/10.1007/s11356-018-3273-7 DB - PRIME DP - Unbound Medicine ER -