Kinetic study and optimization of electro-Fenton process for dissolution and mineralization of ion exchange resins

Tzu Han Cheng, Chun Ping Huang, Yao-Hui Huang, Yu Jen Shih

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Spent ion exchange resins have become a crucial radioactive solid waste from the nuclear industry. Developing effective and safe disposal methods as alternatives to the present cementation method remains challenging. This investigation demonstrates the treatment of a mixed resin (sulfonated and quaternary ammonium polystyrene beads with a weight ratio of 40%:60%) by the electro-Fenton process. Mesh-type titanium metal that was coated with IrO2/RuO2 (Ti-DSA) was used as the anode and a stainless steel net was used as the cathode. The conversion of resins to soluble fragments and the removal of total organic carbon reached 92% and 99.4%, respectively, under conditions of solid loading = 40g L−1, pH 2, applied current = 2 A, H2O2 flow rate = 1.2 mL min−1, FeSO4 = 20 mM at 85 °C. A pseudo first-order kinetic model of consecutive reactions specified that the efficacy of the electro-Fenton depended strongly on the slowly generated styrene in the aqueous phase by H2O2 and strong acid, which was rapidly mineralized by the hydroxyl radicals. The electro-Fenton process with reused iron catalyst was effective for treating ion exchange resin for at least for three runs, greatly reducing the volume of waste resin liquid.

Original languageEnglish
Pages (from-to)954-962
Number of pages9
JournalChemical Engineering Journal
Volume308
DOIs
Publication statusPublished - 2017 Jan 15

Fingerprint

Ion Exchange Resins
Ion exchange resins
resin
ion exchange
Dissolution
Resins
dissolution
mineralization
kinetics
Kinetics
Nuclear industry
Styrene
Polystyrenes
Stainless Steel
Solid wastes
Organic carbon
Radioactive wastes
Titanium
Ammonium Compounds
Hydroxyl Radical

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

@article{9fa5f9543d354520862d5efd55b1447a,
title = "Kinetic study and optimization of electro-Fenton process for dissolution and mineralization of ion exchange resins",
abstract = "Spent ion exchange resins have become a crucial radioactive solid waste from the nuclear industry. Developing effective and safe disposal methods as alternatives to the present cementation method remains challenging. This investigation demonstrates the treatment of a mixed resin (sulfonated and quaternary ammonium polystyrene beads with a weight ratio of 40{\%}:60{\%}) by the electro-Fenton process. Mesh-type titanium metal that was coated with IrO2/RuO2 (Ti-DSA) was used as the anode and a stainless steel net was used as the cathode. The conversion of resins to soluble fragments and the removal of total organic carbon reached 92{\%} and 99.4{\%}, respectively, under conditions of solid loading = 40g L−1, pH 2, applied current = 2 A, H2O2 flow rate = 1.2 mL min−1, FeSO4 = 20 mM at 85 °C. A pseudo first-order kinetic model of consecutive reactions specified that the efficacy of the electro-Fenton depended strongly on the slowly generated styrene in the aqueous phase by H2O2 and strong acid, which was rapidly mineralized by the hydroxyl radicals. The electro-Fenton process with reused iron catalyst was effective for treating ion exchange resin for at least for three runs, greatly reducing the volume of waste resin liquid.",
author = "Cheng, {Tzu Han} and Huang, {Chun Ping} and Yao-Hui Huang and Shih, {Yu Jen}",
year = "2017",
month = "1",
day = "15",
doi = "10.1016/j.cej.2016.09.142",
language = "English",
volume = "308",
pages = "954--962",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

Kinetic study and optimization of electro-Fenton process for dissolution and mineralization of ion exchange resins. / Cheng, Tzu Han; Huang, Chun Ping; Huang, Yao-Hui; Shih, Yu Jen.

In: Chemical Engineering Journal, Vol. 308, 15.01.2017, p. 954-962.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Kinetic study and optimization of electro-Fenton process for dissolution and mineralization of ion exchange resins

AU - Cheng, Tzu Han

AU - Huang, Chun Ping

AU - Huang, Yao-Hui

AU - Shih, Yu Jen

PY - 2017/1/15

Y1 - 2017/1/15

N2 - Spent ion exchange resins have become a crucial radioactive solid waste from the nuclear industry. Developing effective and safe disposal methods as alternatives to the present cementation method remains challenging. This investigation demonstrates the treatment of a mixed resin (sulfonated and quaternary ammonium polystyrene beads with a weight ratio of 40%:60%) by the electro-Fenton process. Mesh-type titanium metal that was coated with IrO2/RuO2 (Ti-DSA) was used as the anode and a stainless steel net was used as the cathode. The conversion of resins to soluble fragments and the removal of total organic carbon reached 92% and 99.4%, respectively, under conditions of solid loading = 40g L−1, pH 2, applied current = 2 A, H2O2 flow rate = 1.2 mL min−1, FeSO4 = 20 mM at 85 °C. A pseudo first-order kinetic model of consecutive reactions specified that the efficacy of the electro-Fenton depended strongly on the slowly generated styrene in the aqueous phase by H2O2 and strong acid, which was rapidly mineralized by the hydroxyl radicals. The electro-Fenton process with reused iron catalyst was effective for treating ion exchange resin for at least for three runs, greatly reducing the volume of waste resin liquid.

AB - Spent ion exchange resins have become a crucial radioactive solid waste from the nuclear industry. Developing effective and safe disposal methods as alternatives to the present cementation method remains challenging. This investigation demonstrates the treatment of a mixed resin (sulfonated and quaternary ammonium polystyrene beads with a weight ratio of 40%:60%) by the electro-Fenton process. Mesh-type titanium metal that was coated with IrO2/RuO2 (Ti-DSA) was used as the anode and a stainless steel net was used as the cathode. The conversion of resins to soluble fragments and the removal of total organic carbon reached 92% and 99.4%, respectively, under conditions of solid loading = 40g L−1, pH 2, applied current = 2 A, H2O2 flow rate = 1.2 mL min−1, FeSO4 = 20 mM at 85 °C. A pseudo first-order kinetic model of consecutive reactions specified that the efficacy of the electro-Fenton depended strongly on the slowly generated styrene in the aqueous phase by H2O2 and strong acid, which was rapidly mineralized by the hydroxyl radicals. The electro-Fenton process with reused iron catalyst was effective for treating ion exchange resin for at least for three runs, greatly reducing the volume of waste resin liquid.

UR - http://www.scopus.com/inward/record.url?scp=84992096725&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84992096725&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2016.09.142

DO - 10.1016/j.cej.2016.09.142

M3 - Article

AN - SCOPUS:84992096725

VL - 308

SP - 954

EP - 962

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -