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Preparation and application of sustained release microcapsules of potassium ferrate(VI) for dinitro butyl phenol (DNBP) wastewater treatment.
J Hazard Mater. 2009 Sep 30; 169(1-3):448-53.JH

Abstract

The encapsulated potassium ferrate(VI) (K(2)FeO(4)) samples were successfully prepared by phase separation method in organic solvents. The ethyl cellulose and paraffin were selected for the microcapsule wall materials (WM). The as prepared microcapsules were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The stability can be enhanced greatly when ferrate(VI) was encapsulated in the microcapsules with a mass ratio of Fe(VI):WM in the range of 1:1-1:3 for the same conserved time in air compared for pure K(2)FeO(4). The sustained release behavior of the microcapsules with different Fe(VI):WM mass ratios in 8.0M KOH solution was also investigated. The results indicated that the Fe(VI) release was reduced with increase of Fe(VI):WM mass ratios from 1:1 to 1:3. The release kinetics of the microcapsules is found to obey Ritger-Peppas equation. The prepared Fe(VI) microcapsules has been used for the removal of a typical alkyl dinitro phenol compound, 2-sec-butyl-4,6-dinitrophenol (DNBP), from aqueous solution. The effect of pH, microcapsule concentration and reaction time was studied thoroughly. The optimal pH for DNBP degradation was 6.5, and at this pH and a microcapsule concentration of 1.2g/L, approximately 93% of the DNBP was degraded after 80 min. The encapsulated ferrate(VI) samples were found to be very effective in the decolorization and COD reduction of real wastewater from DNBP manufacturing. Thus, this study showed the feasible and potential use of encapsulated Fe(VI) samples in degradation of various toxic organic contaminants and industrial effluents.

Authors+Show Affiliations

Department of Chemistry, Dalian University of Technology, Dalian 116023, China. davidwang_71@yahoo.com.cnNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19398157

Citation

Wang, Hui-Long, et al. "Preparation and Application of Sustained Release Microcapsules of Potassium ferrate(VI) for Dinitro Butyl Phenol (DNBP) Wastewater Treatment." Journal of Hazardous Materials, vol. 169, no. 1-3, 2009, pp. 448-53.
Wang HL, Liu SQ, Zhang XY. Preparation and application of sustained release microcapsules of potassium ferrate(VI) for dinitro butyl phenol (DNBP) wastewater treatment. J Hazard Mater. 2009;169(1-3):448-53.
Wang, H. L., Liu, S. Q., & Zhang, X. Y. (2009). Preparation and application of sustained release microcapsules of potassium ferrate(VI) for dinitro butyl phenol (DNBP) wastewater treatment. Journal of Hazardous Materials, 169(1-3), 448-53. https://doi.org/10.1016/j.jhazmat.2009.03.130
Wang HL, Liu SQ, Zhang XY. Preparation and Application of Sustained Release Microcapsules of Potassium ferrate(VI) for Dinitro Butyl Phenol (DNBP) Wastewater Treatment. J Hazard Mater. 2009 Sep 30;169(1-3):448-53. PubMed PMID: 19398157.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation and application of sustained release microcapsules of potassium ferrate(VI) for dinitro butyl phenol (DNBP) wastewater treatment. AU - Wang,Hui-Long, AU - Liu,Shu-Qin, AU - Zhang,Xiu-Yan, Y1 - 2009/04/05/ PY - 2008/10/11/received PY - 2009/03/24/revised PY - 2009/03/25/accepted PY - 2009/4/29/entrez PY - 2009/4/29/pubmed PY - 2009/9/29/medline SP - 448 EP - 53 JF - Journal of hazardous materials JO - J Hazard Mater VL - 169 IS - 1-3 N2 - The encapsulated potassium ferrate(VI) (K(2)FeO(4)) samples were successfully prepared by phase separation method in organic solvents. The ethyl cellulose and paraffin were selected for the microcapsule wall materials (WM). The as prepared microcapsules were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The stability can be enhanced greatly when ferrate(VI) was encapsulated in the microcapsules with a mass ratio of Fe(VI):WM in the range of 1:1-1:3 for the same conserved time in air compared for pure K(2)FeO(4). The sustained release behavior of the microcapsules with different Fe(VI):WM mass ratios in 8.0M KOH solution was also investigated. The results indicated that the Fe(VI) release was reduced with increase of Fe(VI):WM mass ratios from 1:1 to 1:3. The release kinetics of the microcapsules is found to obey Ritger-Peppas equation. The prepared Fe(VI) microcapsules has been used for the removal of a typical alkyl dinitro phenol compound, 2-sec-butyl-4,6-dinitrophenol (DNBP), from aqueous solution. The effect of pH, microcapsule concentration and reaction time was studied thoroughly. The optimal pH for DNBP degradation was 6.5, and at this pH and a microcapsule concentration of 1.2g/L, approximately 93% of the DNBP was degraded after 80 min. The encapsulated ferrate(VI) samples were found to be very effective in the decolorization and COD reduction of real wastewater from DNBP manufacturing. Thus, this study showed the feasible and potential use of encapsulated Fe(VI) samples in degradation of various toxic organic contaminants and industrial effluents. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19398157/Preparation_and_application_of_sustained_release_microcapsules_of_potassium_ferrate_VI__for_dinitro_butyl_phenol__DNBP__wastewater_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)00519-6 DB - PRIME DP - Unbound Medicine ER -